CN109825973B - Fluffy heat-insulating glue-sprayed cotton wadding cold-resistant material and preparation method thereof - Google Patents
Fluffy heat-insulating glue-sprayed cotton wadding cold-resistant material and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a fluffy heat-insulating glue-spraying cotton wadding cold-resistant material and a preparation method thereof, wherein the fluffy heat-insulating glue-spraying cotton wadding cold-resistant material is prepared from the following raw materials in equal proportion: 5-15 parts of synthetic fiber yarn, 1-3 parts of ceramic particle powder and 3-8 parts of polyvinyl acetate. According to the preparation method, the fiber yarn groups are layered and tiled in the vertical cross direction, so that the air permeability of the gunite cotton wadding is greatly reduced, and the fluffy and porous characteristics of the material are not damaged; the method increases the heat resistance of the overall gunite cotton wool material by adding ceramic particle powder, and simultaneously oscillates and disperses the product in the process, so that the overall heat resistance uniformity of the gunite cotton wool material is improved, the heat conductivity of the material is greatly reduced, and the product can play a role in heat insulation for a long time; meanwhile, the method can effectively prevent the material from being suddenly torn or broken in use.
Description
Technical Field
The invention relates to a thermal insulation material, in particular to a fluffy thermal insulation glue-sprayed cotton wadding cold-resistant material and a preparation method thereof.
Background
The gunite cotton wadding is also called as gunite cotton, which is a non-woven fabric, because the three-dimensional grid structure contains a plurality of gaps, the non-woven fabric has the characteristics of porosity, high bulkiness, high-pressure retraction elasticity and the like, and is dry-resistant, easy to wash and light. These excellent performance indexes make the gunite cotton wool appear blowout outbreak in recent years, which not only becomes one of the important raw materials of industrial products, but also becomes one of the main raw materials of civil products. Due to the great increase of the demand and the sharp expansion of the application scene, people put forward the following new requirements on the gunite cotton-wadding material: (1) the characteristic of light weight of the gunite cotton wadding causes the gunite cotton wadding to be applied to windproof and cold-proof products in large quantity, which requires that the material reduces the ventilation rate under the condition of not damaging the fluffy and porous characteristics of the material; (2) as mentioned above, the material is also widely used in heat-insulating and warm-keeping products due to its light weight and high-pressure retraction elasticity, which requires the material to greatly reduce its own thermal conductivity, so that the product can have the long-term heat-insulating and warm-keeping effects; (3) because the material can be applied to extreme working condition environments for a long time, the mechanical strength of the material is required to be further improved, and the condition of sudden tearing or fracture in use is prevented. Therefore, the design and development of the fluffy heat-insulating glue-spraying cotton wadding cold-resistant material and the preparation method thereof become one of the problems to be solved in the field at present.
Disclosure of Invention
In order to solve the problems in the background technology, the invention provides a fluffy heat-insulating glue-spraying cotton wadding cold-resistant material and a preparation method thereof.
In summary, the present invention is primarily directed to the following aspects.
In a first aspect, the invention relates to a fluffy heat-insulating glue-spraying cotton wadding cold-resistant material which is prepared from the following raw materials in equal proportion: 5-15 parts of synthetic fiber yarn, 1-3 parts of ceramic particle powder and 3-8 parts of polyvinyl acetate.
In a second aspect, the invention also relates to a preparation method of the fluffy heat-insulating glue-spraying cotton wadding cold-resistant material, which comprises the following steps:
1) the synthetic fiber yarn is spirally wound on the column through the yarn winding machine, and the pitch of the spiral winding is as follows: 5mm ~13mm, the synthetic fiber silk receives the tensile stress during the winding: 0.07Pa/cm2~0.11Pa/cm2Obtaining a winding state fiber yarn group;
2) carrying out high-temperature steam steaming operation on the winding state fiber yarn group obtained in the step 1), wherein the temperature of the high-temperature steam is as follows: the steaming operation time is 70-95 ℃, and is as follows: 5-10 min to obtain a steamed cellosilk group;
3) soaking the steamed state fiber group obtained in the step 2) into cooling liquid for cold quenching operation, wherein the temperature of the cooling liquid is as follows: the temperature is 2-8 ℃, and the cold quenching operation time is as follows: obtaining a cooling state fiber group within 1-3 min;
4) carrying out strong wind scanning and blow-drying on the cooled fiber group obtained in the step 3) for draining operation, wherein the temperature of the strong wind is as follows: 60-75 ℃, and the draining operation time is as follows: 1-3 min to obtain fluffy fiber yarn groups;
5) repeating the steps 1) to 4) for multiple times, so that the tensile stress range which can be borne by the fiber yarn set is reduced to: 0.04Pa/cm2~0.07Pa/cm2；
6) The fiber yarn groups obtained in the step 5) are taken off from the column, and are flatly paved in a mould frame in a layering mode in the vertical crossing direction, the range of the number of the flatly paved layers is 16-28, and after each layer of the fiber yarn groups are flatly paved, ceramic particle powder is uniformly sprayed on each layer of the fiber yarn groups through a particle sprayer;
7) covering a frame cover after the mould frame is filled with the fiber group, placing the sealed mould frame on a dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 15-30 min, then placing the sealed mould frame on the dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 15-30 min, repeating the oscillation and dispersion operation for multiple times to obtain a fiber composite layer;
8) vertically clamping the fiber yarn composite layer obtained in the step 7), spraying polyvinyl acetate on two side surfaces of the fiber yarn composite layer through a stamping spray head, wherein the stamping pressure of the stamping spray head is 0.7-1.4 MPa, and obtaining a primarily bonded fiber yarn composite layer;
9) carrying out rotary spin coating operation on the preliminarily bonded fiber wire composite layer obtained in the step 8) around a surface central axis, wherein the rotating speed of the rotary spin coating operation is 25 r/min-40 r/min, the time of the rotary spin coating operation is 5 min-10 min, the preliminarily bonded fiber wire composite layer needs to be baked at a constant temperature in the latter half of the rotary spin coating operation, and the baking temperature is as follows: obtaining primary bonded glue-spraying cotton at the temperature of 40-55 ℃;
10) horizontally and parallelly placing the primary bonded collodion-spraying cotton obtained in the step 9) on a spraying operation table, wherein the bottom surface of the primary bonded collodion-spraying cotton is just opposite to an air suction opening, the top surface of the primary bonded collodion-spraying cotton is just opposite to a sprinkler head, polyvinyl acetate is sprayed on the top surface of the primary bonded collodion-spraying cotton by the sprinkler head, negative-pressure air draft is carried out on the primary bonded collodion-spraying cotton through the air suction opening, and the air pressure of the negative-pressure air: 1.5 pa-2.0 pa, the negative pressure air draft duration is 4 min-8 min, then the primary bonded glue-spraying cotton is turned over and placed on a spraying operation table, and the process in the step is repeated to obtain secondary bonded glue-spraying cotton;
11) and (3) carrying out ironing and curing operation on two sides of the secondary bonded glue-sprayed cotton obtained in the step 10), wherein the ironing and curing operation temperature is 90-110 ℃, and the ironing and curing operation time is 10-15 min, so that the glue-sprayed cotton is obtained.
Preferably, the cross-sectional diameter of the synthetic fiber yarn in the step 1) is 0.09-0.15 mm.
Preferably, the ceramic particle powder in the step 1) has a particle size of 0.01mm to 0.03 mm.
Preferably, the cooling liquid in the step 3) is glycerol type.
Preferably, the water proportion of the fluffy fiber yarn group in the step 5) is less than or equal to 3 percent.
Preferably, the ceramic particle powder in the step 10) is uniformly sprayed on each layer of the fiber filament group, and the distribution specific gravity of the fiber filament group is higher than 0.7%.
Preferably, the hollowness of the secondary bonding glue-spraying cotton in the step 10) is 15% -30%.
Preferably, the clo value of the glue-sprayed cotton wool in the step 11) is 1.9-3.2, and the thermal resistance value is 1-2.5.
As mentioned above, the invention provides a fluffy heat-insulating glue-spraying cotton wadding cold-resistant material and a preparation method thereof, the method enables the air permeability of the pulp-spraying cotton wadding to be greatly reduced by layering and flatly paving the fiber yarn groups in the vertical and cross directions, and the fluffy and porous characteristics of the material are not damaged; the method increases the heat resistance of the overall gunite cotton wool material by adding ceramic particle powder, and simultaneously oscillates and disperses the product in the process, so that the overall heat resistance uniformity of the gunite cotton wool material is improved, the heat conductivity of the material is greatly reduced, and the product can play a role in heat insulation for a long time; the method sequentially performs rotary spin coating operation and spraying operation on the fiber composite layer, so that the adhesive effect of the adhesive-sprayed cotton wool is better, the adhesive distribution is more uniform, the mechanical strength of the material is enhanced, and the condition that the material is suddenly torn or broken in use can be effectively avoided.
Detailed Description
The present invention is described in detail below with reference to specific examples, but the use and purpose of these exemplary embodiments are merely to exemplify the present invention, and do not set forth any limitation on the actual scope of the present invention in any form, and the scope of the present invention is not limited thereto.
Example 1
The fluffy heat-insulating glue-spraying cotton wadding cold-resistant material is characterized in that: the material is prepared from the following raw materials in equal proportion: 5 parts of synthetic fiber yarn, 1 part of ceramic particle powder and 3 parts of polyvinyl acetate.
The preparation method of the fluffy heat-insulation glue-sprayed cotton wadding cold-resistant material comprises the following preparation method steps:
1) the synthetic fiber yarn is spirally wound on the column through the yarn winding machine, and the pitch of the spiral winding is as follows: 5mm, the tensile stress born by the synthetic fiber yarn during winding is as follows: 0.07Pa/cm2Obtaining a winding state fiber yarn group; the cross-sectional diameter of the synthetic fiber yarn is 0.09 mm; the ceramic particle powder had a particle size of 0.01 mm.
2) Carrying out high-temperature steam steaming operation on the winding state fiber yarn group obtained in the step 1), wherein the temperature of the high-temperature steam is as follows: the steaming operation time is as follows at 70 ℃: 5min to obtain steamed cellosilk group;
3) soaking the steamed state fiber group obtained in the step 2) into cooling liquid for cold quenching operation, wherein the temperature of the cooling liquid is as follows: the cold quenching operation time is as follows at 2 ℃: 1min, obtaining a cooling state fiber group; the cooling liquid is glycerol.
4) Carrying out strong wind scanning and blow-drying on the cooled fiber group obtained in the step 3) for draining operation, wherein the temperature of the strong wind is as follows: the draining operation time is as follows at 60 ℃: 1min, obtaining fluffy fiber yarn group;
5) repeating the steps 1) to 4) for multiple times, so that the tensile stress range which can be borne by the fiber yarn set is reduced to: 0.04Pa/cm2(ii) a The water proportion of the fluffy cellosilk group is less than or equal to 3 percent.
6) The fiber yarn groups obtained in the step 5) are taken off from the column, and are flatly paved in a mould frame in a layering mode according to the vertical cross direction, the range of the number of the flatly paved layers is 16, and after each layer of the fiber yarn groups are flatly paved, ceramic particle powder is uniformly sprayed on each layer of the fiber yarn groups through a particle sprayer;
7) covering a frame cover after the mould frame is filled with the fiber group, placing the sealed mould frame on a dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 15min, then placing the sealed mould frame on the dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 15min, repeating the oscillation and dispersion operation for multiple times to obtain a fiber composite layer;
8) vertically and vertically clamping the fiber yarn composite layer obtained in the step 7), spraying polyvinyl acetate on two side surfaces of the fiber yarn composite layer through a stamping spray header, wherein the stamping pressure of the stamping spray header is 0.7Mpa, so as to obtain a primarily bonded fiber yarn composite layer;
9) carrying out rotary spin coating operation on the preliminarily bonded fiber filament composite layer obtained in the step 8) around a surface central axis of the preliminarily bonded fiber filament composite layer, wherein the rotating speed of the rotary spin coating operation is 25r/min, the time of the rotary spin coating operation is 5min, the preliminarily bonded fiber filament composite layer needs to be baked at a constant temperature in the latter half of the rotary spin coating operation, and the baking temperature is as follows: obtaining primary bonded collodion cotton at 40 ℃;
10) horizontally and parallelly placing the primary bonded collodion-spraying cotton obtained in the step 9) on a spraying operation table, wherein the bottom surface of the primary bonded collodion-spraying cotton is just opposite to an air suction opening, the top surface of the primary bonded collodion-spraying cotton is just opposite to a sprinkler head, polyvinyl acetate is sprayed on the top surface of the primary bonded collodion-spraying cotton by the sprinkler head, negative-pressure air draft is carried out on the primary bonded collodion-spraying cotton through the air suction opening, and the air pressure of the negative-pressure air: 1.5pa, the negative pressure air draft duration is 4min, then the primary bonded collodion cotton is turned over and placed on a spraying operation table, and the process in the step is repeated to obtain secondary bonded collodion cotton; the ceramic particle powder is uniformly sprayed on each layer of fiber filament group, and the distribution specific gravity is higher than 0.7%. The hollowness of the secondary bonding glue-spraying cotton is 15 percent.
11) And (3) carrying out ironing and curing operation on two sides of the secondary bonded glue-sprayed cotton obtained in the step 10), wherein the ironing and curing operation temperature is 90 ℃, and the ironing and curing operation time is 10min, so that the glue-sprayed cotton is obtained. The cromet value of the sprayed cotton is 1.9, and the thermal resistance value is 1.
Example 2
The fluffy heat-insulating glue-spraying cotton wadding cold-resistant material is characterized in that: the material is prepared from the following raw materials in equal proportion: 5 parts of synthetic fiber yarn, 1 part of ceramic particle powder and 3 parts of polyvinyl acetate.
The preparation method of the fluffy heat-insulation glue-sprayed cotton wadding cold-resistant material comprises the following preparation method steps:
1) the synthetic fiber yarn is spirally wound on the column through the yarn winding machine, and the pitch of the spiral winding is as follows: 9mm, the tensile stress to which the synthetic fiber yarn is subjected during winding is as follows: 0.08Pa/cm2Obtaining a winding state fiber yarn group; the cross-sectional diameter of the synthetic fiber yarn is 0.13 mm; the particle size of the ceramic particle powder was 0.02 mm.
2) Carrying out high-temperature steam steaming operation on the winding state fiber yarn group obtained in the step 1), wherein the temperature of the high-temperature steam is as follows: the steaming operation time is as follows at 80 ℃: 7min to obtain steamed cellosilk group;
3) soaking the steamed state fiber group obtained in the step 2) into cooling liquid for cold quenching operation, wherein the temperature of the cooling liquid is as follows: the cold quenching operation time is as follows at 5 ℃: 2min, obtaining a cooling state fiber group; the cooling liquid is glycerol.
4) Carrying out strong wind scanning and blow-drying on the cooled fiber group obtained in the step 3) for draining operation, wherein the temperature of the strong wind is as follows: at 67 ℃, the draining operation time is as follows: 2min, obtaining fluffy fiber yarn group;
5) repeating the steps 1) to 4) for multiple times, so that the tensile stress range which can be borne by the fiber yarn set is reduced to: 0.05Pa/cm2(ii) a The water proportion of the fluffy cellosilk group is less than or equal to 3 percent.
6) The fiber yarn groups obtained in the step 5) are taken off from the column, and are flatly paved in a mould frame in a layering mode in the vertical crossing direction, the range of the number of the flatly paved layers is 22, and after each layer of the fiber yarn groups are flatly paved, ceramic particle powder is uniformly sprayed on each layer of the fiber yarn groups through a particle sprayer;
7) covering a frame cover after the mould frame is filled with the fiber yarn group, placing the sealed mould frame on a dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 22min, then placing the sealed mould frame on the dispersion machine reversely for oscillation and dispersion, wherein the oscillation and dispersion time is 22min, and repeating the oscillation and dispersion operation for multiple times to obtain a fiber yarn composite layer;
8) vertically and vertically clamping the fiber yarn composite layer obtained in the step 7), spraying polyvinyl acetate on two side surfaces of the fiber yarn composite layer through a stamping spray header, wherein the stamping pressure of the stamping spray header is 1.0Mpa, so as to obtain a primarily bonded fiber yarn composite layer;
9) carrying out rotary spin coating operation on the preliminarily bonded fiber filament composite layer obtained in the step 8) around a surface central axis of the preliminarily bonded fiber filament composite layer, wherein the rotating speed of the rotary spin coating operation is 35r/min, the time of the rotary spin coating operation is 7min, the preliminarily bonded fiber filament composite layer needs to be baked at a constant temperature in the latter half of the rotary spin coating operation, and the baking temperature is as follows: obtaining primary bonded collodion cotton at 47 ℃;
10) horizontally and parallelly placing the primary bonded collodion-spraying cotton obtained in the step 9) on a spraying operation table, wherein the bottom surface of the primary bonded collodion-spraying cotton is just opposite to an air suction opening, the top surface of the primary bonded collodion-spraying cotton is just opposite to a sprinkler head, polyvinyl acetate is sprayed on the top surface of the primary bonded collodion-spraying cotton by the sprinkler head, negative-pressure air draft is carried out on the primary bonded collodion-spraying cotton through the air suction opening, and the air pressure of the negative-pressure air: 1.7pa, the negative pressure air draft duration is 6min, then the primary bonded glue-sprayed cotton is placed on a spraying operation platform in a turned-over manner, and the process in the step is repeated to obtain secondary bonded glue-sprayed cotton; the ceramic particle powder is uniformly sprayed on each layer of fiber filament group, and the distribution specific gravity is higher than 0.7%. The hollowness of the secondary bonding spray-bonded cotton is 22%.
11) And (3) carrying out ironing and curing operation on two sides of the secondary bonded glue-sprayed cotton obtained in the step 10), wherein the ironing and curing operation temperature is 100 ℃, and the ironing and curing operation time is 12min, so that the glue-sprayed cotton is obtained. The cromet value of the sprayed cotton is 2.5, and the thermal resistance value is 1.7.
Example 3
The fluffy heat-insulating glue-spraying cotton wadding cold-resistant material is characterized in that: the material is prepared from the following raw materials in equal proportion: 5 parts of synthetic fiber yarn, 1 part of ceramic particle powder and 3 parts of polyvinyl acetate.
The preparation method of the fluffy heat-insulation glue-sprayed cotton wadding cold-resistant material comprises the following preparation method steps:
1) the synthetic fiber yarn is spirally wound on the column through the yarn winding machine, and the pitch of the spiral winding is as follows: 13mm, the tensile stress to which the synthetic fiber yarn is subjected during winding is as follows: 0.11Pa/cm2Obtaining a winding state fiber yarn group; the cross-sectional diameter of the synthetic fiber yarn is 0.15 mm; the particle size of the ceramic particle powder was 0.03 mm.
2) Carrying out high-temperature steam steaming operation on the winding state fiber yarn group obtained in the step 1), wherein the temperature of the high-temperature steam is as follows: the steaming operation time is as follows at 95 ℃: steaming for 10min to obtain steamed cellosilk group;
3) soaking the steamed state fiber group obtained in the step 2) into cooling liquid for cold quenching operation, wherein the temperature of the cooling liquid is as follows: the cold quenching operation time is as follows at 8 ℃: 3min, obtaining a cooling state fiber group; the cooling liquid is glycerol.
4) Carrying out strong wind scanning and blow-drying on the cooled fiber group obtained in the step 3) for draining operation, wherein the temperature of the strong wind is as follows: and at 75 ℃, the draining operation time is as follows: 3min, obtaining fluffy fiber yarn group;
5) repeating the steps 1) to 4) for multiple times, so that the tensile stress range which can be borne by the fiber yarn set is reduced to: 0.07Pa/cm2(ii) a The water proportion of the fluffy cellosilk group is less than or equal to 3 percent.
6) The fiber yarn groups obtained in the step 5) are taken off from the column, and are flatly paved in a mould frame in a layering mode according to the vertical cross direction, the range of the number of the flatly paved layers is 28, and after each layer of the fiber yarn groups are flatly paved, ceramic particle powder is uniformly sprayed on each layer of the fiber yarn groups through a particle sprayer;
7) covering a frame cover after the mould frame is filled with the fiber group, placing the sealed mould frame on a dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 30min, then placing the sealed mould frame on the dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 30min, repeating the oscillation and dispersion operation for multiple times to obtain a fiber composite layer;
8) vertically and vertically clamping the fiber yarn composite layer obtained in the step 7), spraying polyvinyl acetate on two side surfaces of the fiber yarn composite layer through a stamping spray header, wherein the stamping pressure of the stamping spray header is 1.4Mpa, so as to obtain a primarily bonded fiber yarn composite layer;
9) carrying out rotary spin coating operation on the preliminarily bonded fiber filament composite layer obtained in the step 8) around a surface central axis of the preliminarily bonded fiber filament composite layer, wherein the rotating speed of the rotary spin coating operation is 40r/min, the time of the rotary spin coating operation is 10min, the preliminarily bonded fiber filament composite layer needs to be baked at a constant temperature in the latter half of the rotary spin coating operation, and the baking temperature is as follows: obtaining primary bonded collodion cotton at 55 ℃;
10) horizontally and parallelly placing the primary bonded collodion-spraying cotton obtained in the step 9) on a spraying operation table, wherein the bottom surface of the primary bonded collodion-spraying cotton is just opposite to an air suction opening, the top surface of the primary bonded collodion-spraying cotton is just opposite to a sprinkler head, polyvinyl acetate is sprayed on the top surface of the primary bonded collodion-spraying cotton by the sprinkler head, negative-pressure air draft is carried out on the primary bonded collodion-spraying cotton through the air suction opening, and the air pressure of the negative-pressure air: 2.0pa, the negative pressure air draft duration is 8min, then the primary bonded collodion cotton is turned over and placed on a spraying operation table, and the process in the step is repeated to obtain secondary bonded collodion cotton; the ceramic particle powder is uniformly sprayed on each layer of fiber filament group, and the distribution specific gravity is higher than 0.7%. The hollowness of the secondary bonding glue-spraying cotton is 30 percent.
11) And (3) carrying out ironing and curing operation on two sides of the secondary bonded glue-sprayed cotton obtained in the step 10), wherein the ironing and curing operation temperature is 110 ℃, and the ironing and curing operation time is 15min, so that the glue-sprayed cotton is obtained. The cromet value of the sprayed cotton is 3.2, and the thermal resistance value is 2.5.
Example 4
The fluffy heat-insulating glue-spraying cotton wadding cold-resistant material is characterized in that: the material is prepared from the following raw materials in equal proportion: 10 parts of synthetic fiber yarn, 2 parts of ceramic particle powder and 5 parts of polyvinyl acetate.
The preparation method of the fluffy heat-insulation glue-sprayed cotton wadding cold-resistant material comprises the following preparation method steps:
1) the synthetic fiber yarn is spirally wound on the column through the yarn winding machine, and the pitch of the spiral winding is as follows: 5mm, the tensile stress born by the synthetic fiber yarn during winding is as follows: 0.07Pa/cm2Obtaining a winding state fiber yarn group; the cross-sectional diameter of the synthetic fiber yarn is 0.09 mm; the ceramic particle powder had a particle size of 0.01 mm.
2) Carrying out high-temperature steam steaming operation on the winding state fiber yarn group obtained in the step 1), wherein the temperature of the high-temperature steam is as follows: the steaming operation time is as follows at 70 ℃: 5min to obtain steamed cellosilk group;
3) soaking the steamed state fiber group obtained in the step 2) into cooling liquid for cold quenching operation, wherein the temperature of the cooling liquid is as follows: the cold quenching operation time is as follows at 2 ℃: 1min, obtaining a cooling state fiber group; the cooling liquid is glycerol.
4) Carrying out strong wind scanning and blow-drying on the cooled fiber group obtained in the step 3) for draining operation, wherein the temperature of the strong wind is as follows: the draining operation time is as follows at 60 ℃: 1min, obtaining fluffy fiber yarn group;
5) repeating the steps 1) to 4) for multiple times, so that the tensile stress range which can be borne by the fiber yarn set is reduced to: 0.04Pa/cm2(ii) a The water proportion of the fluffy cellosilk group is less than or equal to 3 percent.
6) The fiber yarn groups obtained in the step 5) are taken off from the column, and are flatly paved in a mould frame in a layering mode according to the vertical cross direction, the range of the number of the flatly paved layers is 16, and after each layer of the fiber yarn groups are flatly paved, ceramic particle powder is uniformly sprayed on each layer of the fiber yarn groups through a particle sprayer;
7) covering a frame cover after the mould frame is filled with the fiber group, placing the sealed mould frame on a dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 15min, then placing the sealed mould frame on the dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 15min, repeating the oscillation and dispersion operation for multiple times to obtain a fiber composite layer;
8) vertically and vertically clamping the fiber yarn composite layer obtained in the step 7), spraying polyvinyl acetate on two side surfaces of the fiber yarn composite layer through a stamping spray header, wherein the stamping pressure of the stamping spray header is 0.7Mpa, so as to obtain a primarily bonded fiber yarn composite layer;
9) carrying out rotary spin coating operation on the preliminarily bonded fiber filament composite layer obtained in the step 8) around a surface central axis of the preliminarily bonded fiber filament composite layer, wherein the rotating speed of the rotary spin coating operation is 25r/min, the time of the rotary spin coating operation is 5min, the preliminarily bonded fiber filament composite layer needs to be baked at a constant temperature in the latter half of the rotary spin coating operation, and the baking temperature is as follows: obtaining primary bonded collodion cotton at 40 ℃;
10) horizontally and parallelly placing the primary bonded collodion-spraying cotton obtained in the step 9) on a spraying operation table, wherein the bottom surface of the primary bonded collodion-spraying cotton is just opposite to an air suction opening, the top surface of the primary bonded collodion-spraying cotton is just opposite to a sprinkler head, polyvinyl acetate is sprayed on the top surface of the primary bonded collodion-spraying cotton by the sprinkler head, negative-pressure air draft is carried out on the primary bonded collodion-spraying cotton through the air suction opening, and the air pressure of the negative-pressure air: 1.5pa, the negative pressure air draft duration is 4min, then the primary bonded collodion cotton is turned over and placed on a spraying operation table, and the process in the step is repeated to obtain secondary bonded collodion cotton; the ceramic particle powder is uniformly sprayed on each layer of fiber filament group, and the distribution specific gravity is higher than 0.7%. The hollowness of the secondary bonding glue-spraying cotton is 15 percent.
11) And (3) carrying out ironing and curing operation on two sides of the secondary bonded glue-sprayed cotton obtained in the step 10), wherein the ironing and curing operation temperature is 90 ℃, and the ironing and curing operation time is 10min, so that the glue-sprayed cotton is obtained. The cromet value of the sprayed cotton is 1.9, and the thermal resistance value is 1.
Example 5
The fluffy heat-insulating glue-spraying cotton wadding cold-resistant material is characterized in that: the material is prepared from the following raw materials in equal proportion: 10 parts of synthetic fiber yarn, 2 parts of ceramic particle powder and 5 parts of polyvinyl acetate.
The preparation method of the fluffy heat-insulation glue-sprayed cotton wadding cold-resistant material comprises the following preparation method steps:
1) the synthetic fiber yarn is spirally wound on the column through the yarn winding machine, and the pitch of the spiral winding is as follows: 9mm, the tensile stress to which the synthetic fiber yarn is subjected during winding is as follows: 0.08Pa/cm2Obtaining a winding state fiber yarn group; the cross-sectional diameter of the synthetic fiber yarn is 0.13 mm; the particle size of the ceramic particle powder was 0.02 mm.
2) Carrying out high-temperature steam steaming operation on the winding state fiber yarn group obtained in the step 1), wherein the temperature of the high-temperature steam is as follows: the steaming operation time is as follows at 80 ℃: 7min to obtain steamed cellosilk group;
3) soaking the steamed state fiber group obtained in the step 2) into cooling liquid for cold quenching operation, wherein the temperature of the cooling liquid is as follows: the cold quenching operation time is as follows at 5 ℃: 2min, obtaining a cooling state fiber group; the cooling liquid is glycerol.
4) Carrying out strong wind scanning and blow-drying on the cooled fiber group obtained in the step 3) for draining operation, wherein the temperature of the strong wind is as follows: at 67 ℃, the draining operation time is as follows: 2min, obtaining fluffy fiber yarn group;
5) repeating the steps 1) to 4) for multiple times, so that the tensile stress range which can be borne by the fiber yarn set is reduced to: 0.05Pa/cm2(ii) a The water proportion of the fluffy cellosilk group is less than or equal to 3 percent.
6) The fiber yarn groups obtained in the step 5) are taken off from the column, and are flatly paved in a mould frame in a layering mode in the vertical crossing direction, the range of the number of the flatly paved layers is 22, and after each layer of the fiber yarn groups are flatly paved, ceramic particle powder is uniformly sprayed on each layer of the fiber yarn groups through a particle sprayer;
7) covering a frame cover after the mould frame is filled with the fiber yarn group, placing the sealed mould frame on a dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 22min, then placing the sealed mould frame on the dispersion machine reversely for oscillation and dispersion, wherein the oscillation and dispersion time is 22min, and repeating the oscillation and dispersion operation for multiple times to obtain a fiber yarn composite layer;
8) vertically and vertically clamping the fiber yarn composite layer obtained in the step 7), spraying polyvinyl acetate on two side surfaces of the fiber yarn composite layer through a stamping spray header, wherein the stamping pressure of the stamping spray header is 1.0Mpa, so as to obtain a primarily bonded fiber yarn composite layer;
9) carrying out rotary spin coating operation on the preliminarily bonded fiber filament composite layer obtained in the step 8) around a surface central axis of the preliminarily bonded fiber filament composite layer, wherein the rotating speed of the rotary spin coating operation is 35r/min, the time of the rotary spin coating operation is 7min, the preliminarily bonded fiber filament composite layer needs to be baked at a constant temperature in the latter half of the rotary spin coating operation, and the baking temperature is as follows: obtaining primary bonded collodion cotton at 47 ℃;
10) horizontally and parallelly placing the primary bonded collodion-spraying cotton obtained in the step 9) on a spraying operation table, wherein the bottom surface of the primary bonded collodion-spraying cotton is just opposite to an air suction opening, the top surface of the primary bonded collodion-spraying cotton is just opposite to a sprinkler head, polyvinyl acetate is sprayed on the top surface of the primary bonded collodion-spraying cotton by the sprinkler head, negative-pressure air draft is carried out on the primary bonded collodion-spraying cotton through the air suction opening, and the air pressure of the negative-pressure air: 1.7pa, the negative pressure air draft duration is 6min, then the primary bonded glue-sprayed cotton is placed on a spraying operation platform in a turned-over manner, and the process in the step is repeated to obtain secondary bonded glue-sprayed cotton; the ceramic particle powder is uniformly sprayed on each layer of fiber filament group, and the distribution specific gravity is higher than 0.7%. The hollowness of the secondary bonding spray-bonded cotton is 22%.
11) And (3) carrying out ironing and curing operation on two sides of the secondary bonded glue-sprayed cotton obtained in the step 10), wherein the ironing and curing operation temperature is 100 ℃, and the ironing and curing operation time is 12min, so that the glue-sprayed cotton is obtained. The cromet value of the sprayed cotton is 2.5, and the thermal resistance value is 1.7.
Example 6
The fluffy heat-insulating glue-spraying cotton wadding cold-resistant material is characterized in that: the material is prepared from the following raw materials in equal proportion: 10 parts of synthetic fiber yarn, 2 parts of ceramic particle powder and 5 parts of polyvinyl acetate.
The preparation method of the fluffy heat-insulation glue-sprayed cotton wadding cold-resistant material comprises the following preparation method steps:
1) the synthetic fiber yarn is spirally wound on the column through the yarn winding machine, and the pitch of the spiral winding is as follows: 13mm, the tensile stress to which the synthetic fiber yarn is subjected during winding is as follows: 0.11Pa/cm2Obtaining a winding state fiber yarn group; the cross-sectional diameter of the synthetic fiber yarn is 0.15 mm; the particle size of the ceramic particle powder was 0.03 mm.
2) Carrying out high-temperature steam steaming operation on the winding state fiber yarn group obtained in the step 1), wherein the temperature of the high-temperature steam is as follows: the steaming operation time is as follows at 95 ℃: steaming for 10min to obtain steamed cellosilk group;
3) soaking the steamed state fiber group obtained in the step 2) into cooling liquid for cold quenching operation, wherein the temperature of the cooling liquid is as follows: the cold quenching operation time is as follows at 8 ℃: 3min, obtaining a cooling state fiber group; the cooling liquid is glycerol.
4) Carrying out strong wind scanning and blow-drying on the cooled fiber group obtained in the step 3) for draining operation, wherein the temperature of the strong wind is as follows: and at 75 ℃, the draining operation time is as follows: 3min, obtaining fluffy fiber yarn group;
5) repeating the steps 1) to 4) for multiple times, so that the tensile stress range which can be borne by the fiber yarn set is reduced to: 0.07Pa/cm2(ii) a The water proportion of the fluffy cellosilk group is less than or equal to 3 percent.
6) The fiber yarn groups obtained in the step 5) are taken off from the column, and are flatly paved in a mould frame in a layering mode according to the vertical cross direction, the range of the number of the flatly paved layers is 28, and after each layer of the fiber yarn groups are flatly paved, ceramic particle powder is uniformly sprayed on each layer of the fiber yarn groups through a particle sprayer;
7) covering a frame cover after the mould frame is filled with the fiber group, placing the sealed mould frame on a dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 30min, then placing the sealed mould frame on the dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 30min, repeating the oscillation and dispersion operation for multiple times to obtain a fiber composite layer;
8) vertically and vertically clamping the fiber yarn composite layer obtained in the step 7), spraying polyvinyl acetate on two side surfaces of the fiber yarn composite layer through a stamping spray header, wherein the stamping pressure of the stamping spray header is 1.4Mpa, so as to obtain a primarily bonded fiber yarn composite layer;
9) carrying out rotary spin coating operation on the preliminarily bonded fiber filament composite layer obtained in the step 8) around a surface central axis of the preliminarily bonded fiber filament composite layer, wherein the rotating speed of the rotary spin coating operation is 40r/min, the time of the rotary spin coating operation is 10min, the preliminarily bonded fiber filament composite layer needs to be baked at a constant temperature in the latter half of the rotary spin coating operation, and the baking temperature is as follows: obtaining primary bonded collodion cotton at 55 ℃;
10) horizontally and parallelly placing the primary bonded collodion-spraying cotton obtained in the step 9) on a spraying operation table, wherein the bottom surface of the primary bonded collodion-spraying cotton is just opposite to an air suction opening, the top surface of the primary bonded collodion-spraying cotton is just opposite to a sprinkler head, polyvinyl acetate is sprayed on the top surface of the primary bonded collodion-spraying cotton by the sprinkler head, negative-pressure air draft is carried out on the primary bonded collodion-spraying cotton through the air suction opening, and the air pressure of the negative-pressure air: 2.0pa, the negative pressure air draft duration is 8min, then the primary bonded collodion cotton is turned over and placed on a spraying operation table, and the process in the step is repeated to obtain secondary bonded collodion cotton; the ceramic particle powder is uniformly sprayed on each layer of fiber filament group, and the distribution specific gravity is higher than 0.7%. The hollowness of the secondary bonding glue-spraying cotton is 30 percent.
11) And (3) carrying out ironing and curing operation on two sides of the secondary bonded glue-sprayed cotton obtained in the step 10), wherein the ironing and curing operation temperature is 110 ℃, and the ironing and curing operation time is 15min, so that the glue-sprayed cotton is obtained. The cromet value of the sprayed cotton is 3.2, and the thermal resistance value is 2.5.
Example 7
The fluffy heat-insulating glue-spraying cotton wadding cold-resistant material is characterized in that: the material is prepared from the following raw materials in equal proportion: 15 parts of synthetic fiber yarn, 3 parts of ceramic particle powder and 8 parts of polyvinyl acetate.
The preparation method of the fluffy heat-insulation glue-sprayed cotton wadding cold-resistant material comprises the following preparation method steps:
1) the synthetic fiber yarn is spirally wound on the column through the yarn winding machine, and the pitch of the spiral winding is as follows: 5mm, the tensile stress born by the synthetic fiber yarn during winding is as follows: 0.07Pa/cm2Obtaining a winding state fiber yarn group; the cross-sectional diameter of the synthetic fiber yarn is 0.09 mm; the ceramic particle powder had a particle size of 0.01 mm.
2) Carrying out high-temperature steam steaming operation on the winding state fiber yarn group obtained in the step 1), wherein the temperature of the high-temperature steam is as follows: the steaming operation time is as follows at 70 ℃: 5min to obtain steamed cellosilk group;
3) soaking the steamed state fiber group obtained in the step 2) into cooling liquid for cold quenching operation, wherein the temperature of the cooling liquid is as follows: the cold quenching operation time is as follows at 2 ℃: 1min, obtaining a cooling state fiber group; the cooling liquid is glycerol.
4) Carrying out strong wind scanning and blow-drying on the cooled fiber group obtained in the step 3) for draining operation, wherein the temperature of the strong wind is as follows: the draining operation time is as follows at 60 ℃: 1min, obtaining fluffy fiber yarn group;
5) repeating the steps 1) to 4) for multiple times, so that the tensile stress range which can be borne by the fiber yarn set is reduced to: 0.04Pa/cm2(ii) a The water proportion of the fluffy cellosilk group is less than or equal to 3 percent.
6) The fiber yarn groups obtained in the step 5) are taken off from the column, and are flatly paved in a mould frame in a layering mode according to the vertical cross direction, the range of the number of the flatly paved layers is 16, and after each layer of the fiber yarn groups are flatly paved, ceramic particle powder is uniformly sprayed on each layer of the fiber yarn groups through a particle sprayer;
7) covering a frame cover after the mould frame is filled with the fiber group, placing the sealed mould frame on a dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 15min, then placing the sealed mould frame on the dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 15min, repeating the oscillation and dispersion operation for multiple times to obtain a fiber composite layer;
8) vertically and vertically clamping the fiber yarn composite layer obtained in the step 7), spraying polyvinyl acetate on two side surfaces of the fiber yarn composite layer through a stamping spray header, wherein the stamping pressure of the stamping spray header is 0.7Mpa, so as to obtain a primarily bonded fiber yarn composite layer;
9) carrying out rotary spin coating operation on the preliminarily bonded fiber filament composite layer obtained in the step 8) around a surface central axis of the preliminarily bonded fiber filament composite layer, wherein the rotating speed of the rotary spin coating operation is 25r/min, the time of the rotary spin coating operation is 5min, the preliminarily bonded fiber filament composite layer needs to be baked at a constant temperature in the latter half of the rotary spin coating operation, and the baking temperature is as follows: obtaining primary bonded collodion cotton at 40 ℃;
10) horizontally and parallelly placing the primary bonded collodion-spraying cotton obtained in the step 9) on a spraying operation table, wherein the bottom surface of the primary bonded collodion-spraying cotton is just opposite to an air suction opening, the top surface of the primary bonded collodion-spraying cotton is just opposite to a sprinkler head, polyvinyl acetate is sprayed on the top surface of the primary bonded collodion-spraying cotton by the sprinkler head, negative-pressure air draft is carried out on the primary bonded collodion-spraying cotton through the air suction opening, and the air pressure of the negative-pressure air: 1.5pa, the negative pressure air draft duration is 4min, then the primary bonded collodion cotton is turned over and placed on a spraying operation table, and the process in the step is repeated to obtain secondary bonded collodion cotton; the ceramic particle powder is uniformly sprayed on each layer of fiber filament group, and the distribution specific gravity is higher than 0.7%. The hollowness of the secondary bonding glue-spraying cotton is 15 percent.
11) And (3) carrying out ironing and curing operation on two sides of the secondary bonded glue-sprayed cotton obtained in the step 10), wherein the ironing and curing operation temperature is 90 ℃, and the ironing and curing operation time is 10min, so that the glue-sprayed cotton is obtained. The cromet value of the sprayed cotton is 1.9, and the thermal resistance value is 1.
Example 8
The fluffy heat-insulating glue-spraying cotton wadding cold-resistant material is characterized in that: the material is prepared from the following raw materials in equal proportion: 15 parts of synthetic fiber yarn, 3 parts of ceramic particle powder and 8 parts of polyvinyl acetate.
The preparation method of the fluffy heat-insulation glue-sprayed cotton wadding cold-resistant material comprises the following preparation method steps:
1) the synthetic fiber yarn is spirally wound on the column through the yarn winding machine, and the pitch of the spiral winding is as follows: 9mm, the tensile stress to which the synthetic fiber yarn is subjected during winding is as follows: 0.08Pa/cm2Obtaining a winding state fiber yarn group; the cross-sectional diameter of the synthetic fiber yarn is 0.13 mm; the particle size of the ceramic particle powder was 0.02 mm.
2) Carrying out high-temperature steam steaming operation on the winding state fiber yarn group obtained in the step 1), wherein the temperature of the high-temperature steam is as follows: the steaming operation time is as follows at 80 ℃: 7min to obtain steamed cellosilk group;
3) soaking the steamed state fiber group obtained in the step 2) into cooling liquid for cold quenching operation, wherein the temperature of the cooling liquid is as follows: the cold quenching operation time is as follows at 5 ℃: 2min, obtaining a cooling state fiber group; the cooling liquid is glycerol.
4) Carrying out strong wind scanning and blow-drying on the cooled fiber group obtained in the step 3) for draining operation, wherein the temperature of the strong wind is as follows: at 67 ℃, the draining operation time is as follows: 2min, obtaining fluffy fiber yarn group;
5) repeating the steps 1) to 4) for multiple times, so that the tensile stress range which can be borne by the fiber yarn set is reduced to: 0.05Pa/cm2(ii) a The water proportion of the fluffy cellosilk group is less than or equal to 3 percent.
6) The fiber yarn groups obtained in the step 5) are taken off from the column, and are flatly paved in a mould frame in a layering mode in the vertical crossing direction, the range of the number of the flatly paved layers is 22, and after each layer of the fiber yarn groups are flatly paved, ceramic particle powder is uniformly sprayed on each layer of the fiber yarn groups through a particle sprayer;
7) covering a frame cover after the mould frame is filled with the fiber yarn group, placing the sealed mould frame on a dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 22min, then placing the sealed mould frame on the dispersion machine reversely for oscillation and dispersion, wherein the oscillation and dispersion time is 22min, and repeating the oscillation and dispersion operation for multiple times to obtain a fiber yarn composite layer;
8) vertically and vertically clamping the fiber yarn composite layer obtained in the step 7), spraying polyvinyl acetate on two side surfaces of the fiber yarn composite layer through a stamping spray header, wherein the stamping pressure of the stamping spray header is 1.0Mpa, so as to obtain a primarily bonded fiber yarn composite layer;
9) carrying out rotary spin coating operation on the preliminarily bonded fiber filament composite layer obtained in the step 8) around a surface central axis of the preliminarily bonded fiber filament composite layer, wherein the rotating speed of the rotary spin coating operation is 35r/min, the time of the rotary spin coating operation is 7min, the preliminarily bonded fiber filament composite layer needs to be baked at a constant temperature in the latter half of the rotary spin coating operation, and the baking temperature is as follows: obtaining primary bonded collodion cotton at 47 ℃;
10) horizontally and parallelly placing the primary bonded collodion-spraying cotton obtained in the step 9) on a spraying operation table, wherein the bottom surface of the primary bonded collodion-spraying cotton is just opposite to an air suction opening, the top surface of the primary bonded collodion-spraying cotton is just opposite to a sprinkler head, polyvinyl acetate is sprayed on the top surface of the primary bonded collodion-spraying cotton by the sprinkler head, negative-pressure air draft is carried out on the primary bonded collodion-spraying cotton through the air suction opening, and the air pressure of the negative-pressure air: 1.7pa, the negative pressure air draft duration is 6min, then the primary bonded glue-sprayed cotton is placed on a spraying operation platform in a turned-over manner, and the process in the step is repeated to obtain secondary bonded glue-sprayed cotton; the ceramic particle powder is uniformly sprayed on each layer of fiber filament group, and the distribution specific gravity is higher than 0.7%. The hollowness of the secondary bonding spray-bonded cotton is 22%.
11) And (3) carrying out ironing and curing operation on two sides of the secondary bonded glue-sprayed cotton obtained in the step 10), wherein the ironing and curing operation temperature is 100 ℃, and the ironing and curing operation time is 12min, so that the glue-sprayed cotton is obtained. The cromet value of the sprayed cotton is 2.5, and the thermal resistance value is 1.7.
Example 9
The fluffy heat-insulating glue-spraying cotton wadding cold-resistant material is characterized in that: the material is prepared from the following raw materials in equal proportion: 15 parts of synthetic fiber yarn, 3 parts of ceramic particle powder and 8 parts of polyvinyl acetate.
The preparation method of the fluffy heat-insulation glue-sprayed cotton wadding cold-resistant material comprises the following preparation method steps:
1) the synthetic fiber yarn is spirally wound on the column through the yarn winding machine, and the pitch of the spiral winding is as follows: 13mm, the tensile stress to which the synthetic fiber yarn is subjected during winding is as follows: 0.11Pa/cm2Obtaining a winding state fiber yarn group; the cross-sectional diameter of the synthetic fiber yarn is 0.15 mm; the particle size of the ceramic particle powder was 0.03 mm.
2) Carrying out high-temperature steam steaming operation on the winding state fiber yarn group obtained in the step 1), wherein the temperature of the high-temperature steam is as follows: the steaming operation time is as follows at 95 ℃: steaming for 10min to obtain steamed cellosilk group;
3) soaking the steamed state fiber group obtained in the step 2) into cooling liquid for cold quenching operation, wherein the temperature of the cooling liquid is as follows: the cold quenching operation time is as follows at 8 ℃: 3min, obtaining a cooling state fiber group; the cooling liquid is glycerol.
4) Carrying out strong wind scanning and blow-drying on the cooled fiber group obtained in the step 3) for draining operation, wherein the temperature of the strong wind is as follows: and at 75 ℃, the draining operation time is as follows: 3min, obtaining fluffy fiber yarn group;
5) repeating the steps 1) to 4) for multiple times, so that the tensile stress range which can be borne by the fiber yarn set is reduced to: 0.07Pa/cm2(ii) a The water proportion of the fluffy cellosilk group is less than or equal to 3 percent.
6) The fiber yarn groups obtained in the step 5) are taken off from the column, and are flatly paved in a mould frame in a layering mode according to the vertical cross direction, the range of the number of the flatly paved layers is 28, and after each layer of the fiber yarn groups are flatly paved, ceramic particle powder is uniformly sprayed on each layer of the fiber yarn groups through a particle sprayer;
7) covering a frame cover after the mould frame is filled with the fiber group, placing the sealed mould frame on a dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 30min, then placing the sealed mould frame on the dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 30min, repeating the oscillation and dispersion operation for multiple times to obtain a fiber composite layer;
8) vertically and vertically clamping the fiber yarn composite layer obtained in the step 7), spraying polyvinyl acetate on two side surfaces of the fiber yarn composite layer through a stamping spray header, wherein the stamping pressure of the stamping spray header is 1.4Mpa, so as to obtain a primarily bonded fiber yarn composite layer;
9) carrying out rotary spin coating operation on the preliminarily bonded fiber filament composite layer obtained in the step 8) around a surface central axis of the preliminarily bonded fiber filament composite layer, wherein the rotating speed of the rotary spin coating operation is 40r/min, the time of the rotary spin coating operation is 10min, the preliminarily bonded fiber filament composite layer needs to be baked at a constant temperature in the latter half of the rotary spin coating operation, and the baking temperature is as follows: obtaining primary bonded collodion cotton at 55 ℃;
10) horizontally and parallelly placing the primary bonded collodion-spraying cotton obtained in the step 9) on a spraying operation table, wherein the bottom surface of the primary bonded collodion-spraying cotton is just opposite to an air suction opening, the top surface of the primary bonded collodion-spraying cotton is just opposite to a sprinkler head, polyvinyl acetate is sprayed on the top surface of the primary bonded collodion-spraying cotton by the sprinkler head, negative-pressure air draft is carried out on the primary bonded collodion-spraying cotton through the air suction opening, and the air pressure of the negative-pressure air: 2.0pa, the negative pressure air draft duration is 8min, then the primary bonded collodion cotton is turned over and placed on a spraying operation table, and the process in the step is repeated to obtain secondary bonded collodion cotton; the ceramic particle powder is uniformly sprayed on each layer of fiber filament group, and the distribution specific gravity is higher than 0.7%. The hollowness of the secondary bonding glue-spraying cotton is 30 percent.
11) And (3) carrying out ironing and curing operation on two sides of the secondary bonded glue-sprayed cotton obtained in the step 10), wherein the ironing and curing operation temperature is 110 ℃, and the ironing and curing operation time is 15min, so that the glue-sprayed cotton is obtained. The cromet value of the sprayed cotton is 3.2, and the thermal resistance value is 2.5.
As mentioned above, the invention provides a fluffy heat-insulating glue-spraying cotton wadding cold-resistant material and a preparation method thereof, the method enables the air permeability of the pulp-spraying cotton wadding to be greatly reduced by layering and flatly paving the fiber yarn groups in the vertical and cross directions, and the fluffy and porous characteristics of the material are not damaged; the method increases the heat resistance of the overall gunite cotton wool material by adding ceramic particle powder, and simultaneously oscillates and disperses the product in the process, so that the overall heat resistance uniformity of the gunite cotton wool material is improved, the heat conductivity of the material is greatly reduced, and the product can play a role in heat insulation for a long time; the method sequentially performs rotary spin coating operation and spraying operation on the fiber composite layer, so that the adhesive effect of the adhesive-sprayed cotton wool is better, the adhesive distribution is more uniform, the mechanical strength of the material is enhanced, and the condition that the material is suddenly torn or broken in use can be effectively avoided.
It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should also be understood that various alterations, modifications and/or variations can be made to the present invention by those skilled in the art after reading the technical content of the present invention, and all such equivalents fall within the protective scope defined by the claims of the present application.
Claims (8)
1. The fluffy heat-insulating glue-spraying cotton wadding cold-resistant material is characterized in that: the material is prepared from the following raw materials in equal proportion: 5-15 parts of synthetic fiber yarns, 1-3 parts of ceramic particle powder and 3-8 parts of polyvinyl acetate, and the preparation method of the fluffy heat-insulating glue-spraying cotton wadding cold-resistant material comprises the following steps:
1) the synthetic fiber yarn is spirally wound on the column through the yarn winding machine, and the pitch of the spiral winding is as follows: 5mm ~13mm, the synthetic fiber silk receives the tensile stress during the winding: 0.07Pa/cm2~0.11Pa/cm2Obtaining a winding state fiber yarn group;
2) carrying out high-temperature steam steaming operation on the winding state fiber yarn group obtained in the step 1), wherein the temperature of the high-temperature steam is as follows: the steaming operation time is 70-95 ℃, and is as follows: 5-10 min to obtain a steamed cellosilk group;
3) soaking the steamed state fiber group obtained in the step 2) into cooling liquid for cold quenching operation, wherein the temperature of the cooling liquid is as follows: the temperature is 2-8 ℃, and the cold quenching operation time is as follows: obtaining a cooling state fiber group within 1-3 min;
4) carrying out strong wind scanning and blow-drying on the cooled fiber group obtained in the step 3) for draining operation, wherein the temperature of the strong wind is as follows: 60-75 ℃, and the draining operation time is as follows: 1-3 min to obtain fluffy fiber yarn groups;
5) repeating the steps 1) to 4) for multiple times, so that the tensile stress range which can be borne by the fiber yarn set is reduced to: 0.04Pa/cm2~0.07Pa/cm2；
6) The fiber yarn groups obtained in the step 5) are taken off from the column, and are flatly paved in a mould frame in a layering mode in the vertical crossing direction, the range of the number of the flatly paved layers is 16-28, and after each layer of the fiber yarn groups are flatly paved, ceramic particle powder is uniformly sprayed on each layer of the fiber yarn groups through a particle sprayer;
7) covering a frame cover after the mould frame is filled with the fiber group, placing the sealed mould frame on a dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 15-30 min, then placing the sealed mould frame on the dispersion machine for oscillation and dispersion, wherein the oscillation and dispersion time is 15-30 min, repeating the oscillation and dispersion operation for multiple times to obtain a fiber composite layer;
8) vertically and vertically clamping the fiber yarn composite layer obtained in the step 7), spraying polyvinyl acetate on two side surfaces of the fiber yarn composite layer through a stamping spray header, wherein the stamping pressure of the stamping spray header is 0.7MP a-1.4 MP a, and obtaining a primarily bonded fiber yarn composite layer;
9) carrying out rotary spin coating operation on the preliminarily bonded fiber wire composite layer obtained in the step 8) around a surface central axis, wherein the rotating speed of the rotary spin coating operation is 25 r/min-40 r/min, the time of the rotary spin coating operation is 5 min-10 min, the preliminarily bonded fiber wire composite layer needs to be baked at a constant temperature in the latter half of the rotary spin coating operation, and the baking temperature is as follows: obtaining primary bonded glue-spraying cotton at the temperature of 40-55 ℃;
10) horizontally and parallelly placing the primary bonded collodion-spraying cotton obtained in the step 9) on a spraying operation table, wherein the bottom surface of the primary bonded collodion-spraying cotton is just opposite to an air suction opening, the top surface of the primary bonded collodion-spraying cotton is just opposite to a sprinkler head, polyvinyl acetate is sprayed on the top surface of the primary bonded collodion-spraying cotton by the sprinkler head, negative-pressure air draft is carried out on the primary bonded collodion-spraying cotton through the air suction opening, and the air pressure of the negative-pressure air: 1.5P a-2.0P a, the negative pressure air draft time is 4-8 min, then the primary bonded collodion cotton is placed on a spraying operation table in a turned-over mode, the process in the step is repeated, and secondary bonded collodion cotton is obtained;
11) and (3) carrying out ironing and curing operation on two sides of the secondary bonded glue-sprayed cotton obtained in the step 10), wherein the ironing and curing operation temperature is 90-110 ℃, and the ironing and curing operation time is 10-15 min, so that the glue-sprayed cotton is obtained.
2. The fluffy, heat-insulating, glue-sprayed wadding cold-resistant material of claim 1, wherein the synthetic fiber filaments in step 1) have a cross-sectional diameter of 0.09mm to 0.15 mm.
3. The fluffy, heat-insulating, glue-sprayed wadding cold-resistant material of claim 1, wherein the ceramic particle powder in step 1) has a particle size of 0.01mm to 0.03 mm.
4. The fluffy, heat-insulating, blown cotton wool cold-resistant material of claim 1, wherein the cooling fluid in step 3) is of the glycerin type.
5. The fluffy, heat-insulating, glue-sprayed, cotton-wadded cold-resistant material of claim 1, wherein the bulk fiber group in step 4) has a water specific gravity of 3% or less.
6. The fluffy, heat-insulating, glue-sprayed wadding cold-resistant material of claim 1, wherein the ceramic particles of step 6) are uniformly sprayed on each layer of the fiber filament groups with a specific gravity higher than 0.7%.
7. The fluffy, heat-insulating, glue-blown cotton cold-resistant material of claim 1, wherein the hollowness of the secondary bonded glue-blown cotton in the step 10) is 15-30%.
8. The fluffy heat-insulating glue-sprayed cotton wool cold-resistant material of claim 1, wherein the Kraft value of the glue-sprayed cotton wool in the step 11) is 1.9-3.2, and the thermal resistance value is 1-2.5.
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| CN103306048A (en) * | 2012-03-07 | 2013-09-18 | 福建赛特新材股份有限公司 | Fiber mat, preparation method and core material for vacuum thermal insulation plate |
| CN102618947A (en) * | 2012-04-06 | 2012-08-01 | 缪爱国 | Method for producing PTT (polytrimethylene terephthalate) spiral three-dimensional hollow fibers |
| CN102899896B (en) * | 2012-10-11 | 2014-11-26 | 紫罗兰家纺科技股份有限公司 | Production process of polyester wadding or non-glue cotton |
| CN103061035A (en) * | 2013-01-07 | 2013-04-24 | 安徽小小神童无纺制品有限公司 | Method for manufacturing polyester wadding |
| CN108396466A (en) * | 2018-03-23 | 2018-08-14 | 福建省晋江市恒丰喷胶棉织造有限公司 | A kind of Novel heat-preservation gum sprayed cotton and preparation method thereof |
| CN109228570A (en) * | 2018-08-08 | 2019-01-18 | 厦门安踏体育用品有限公司 | A kind of warming gum sprayed cotton and preparation method thereof and dress ornament |
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