CN109823009B - Light protective clothing fabric and protective clothing - Google Patents
Light protective clothing fabric and protective clothing Download PDFInfo
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- CN109823009B CN109823009B CN201910146941.9A CN201910146941A CN109823009B CN 109823009 B CN109823009 B CN 109823009B CN 201910146941 A CN201910146941 A CN 201910146941A CN 109823009 B CN109823009 B CN 109823009B
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Abstract
The utility model provides a light protective clothing surface fabric, its characterized in that, light protective clothing surface fabric includes the inoxidizing coating, the inoxidizing coating includes superimposed PET non-woven fabrics layer, aramid fiber weaving layer, and epoxy and cellulose molecular chain pass PET non-woven fabrics layer, aramid fiber weaving layer's space is connected PET non-woven fabrics layer, aramid fiber layer. The invention also provides a manufacturing method of the fabric of the protective clothing and the protective clothing containing the fabric. The light protective clothing fabric and the protective clothing provided by the invention are light in weight, high in strength, good in heat insulation, light and comfortable to wear and good in protection.
Description
Technical Field
The invention relates to protective clothing and protective clothing fabric, in particular to light protective clothing and protective clothing fabric.
Background
From the technical and use aspects, the protective clothing products mainly have the following development trends:
1) in the production process of industries such as oil exploitation, oil refining, chemical enterprises, electronic enterprises and the like, operators often face the multiple risks, and the protection suit is required to have multiple protection functions so as to meet the protection requirements of certain specific operating environments, such as chemical protection, deflagration protection and electric arc protection.
2) Lightness and comfort of the protective garment are important to the wearer. Typical applications such as summer/high temperature operations, heavy duty operations in special environments, institute/laboratory operations, etc., require fabrics for protective apparel that are lighter, more breathable, multi-functional with single-layer fabrics, and versatile in design to meet moderate protective requirements.
3) Demand industrialization/specialization. The application of the protective clothing is from the initial protection of emergency rescue personnel to the safety protection of operators in various industries such as automobiles, nuclear power, fire protection, clean rooms, chemical engineering, medical treatment, electronics and the like. The demands on protective garments from different industries are also very different, which requires more industrialisation/specialisation of protective garment products.
The portability of the protective clothing generally adopts a mode of increasing micropores or reducing the thickness, which often leads to the reduction of the protective performance, and the research and development of new special materials are also the important direction for reducing the density of the protective clothing, but the research and development cost is high and the period is long.
Disclosure of Invention
In order to realize the portability of the protective clothing, the application provides the lightweight protective clothing and the fabric for the lightweight protective clothing.
The first aspect of the invention is a portable protective clothing fabric which comprises a protective layer, wherein the protective layer comprises a PET non-woven fabric layer and an aramid fiber woven layer which are superposed, and epoxy resin and cellulose molecular chains penetrate through gaps of the PET non-woven fabric layer and the aramid fiber woven layer to connect the PET non-woven fabric layer and the aramid fiber layer.
In a second aspect, the invention provides a method for producing the portable protective clothing fabric, which comprises the following steps:
providing an epoxy resin aqueous dispersion, and adding an alkali solution of cellulose xanthate into the aqueous dispersion to obtain a liquid adhesive;
the PET non-woven fabric layer is sandwiched between two aramid fiber textile layers to form a superposed base fabric;
coating a liquid adhesive on the superposed base cloth to enable the liquid adhesive to permeate from the aramid fiber textile layer on one side to the aramid fiber textile layer on the other side; applying pressure to the overlying substrate;
curing the epoxy resin during the application of pressure, curing the cellulose xanthate to reduce the degree of esterification;
drying and acid washing to obtain a protective layer;
the protective layer and other layers which may be present are made into the protective garment fabric.
The third aspect of the invention provides portable protective clothing which is made of the portable protective clothing fabric of the first aspect of the invention.
In a preferred embodiment, the pressure is ≧ 1.5 atmospheres.
In a preferred embodiment, the density of the protective layer is preferably 150-200g/m2。
In a preferred embodiment, the epoxy resin may be a combination of one or more of glycidyl ether type epoxy resin, glycidyl ester type epoxy resin, glycidyl amine type epoxy resin, aliphatic epoxy resin, and alicyclic epoxy resin.
In a preferred embodiment, the alkali solution is a sodium hydroxide solution.
In a preferred embodiment, the epoxy resin has an epoxy value of between 0.3 and 0.35.
In a preferred embodiment, the curing may be:
1) adding a curing agent for curing, for example, adding the curing agent into a liquid adhesive before curing; or
2) Adding photoinitiator, and curing under the action of ultraviolet rays.
The present invention preferably employs a curing agent memberCuring, more preferably, the curing agent is selected from amines, wherein the amine may be: 1) aliphatic amines, such as: ethylenediamine, H2N-(CH2-CH2-NH)n-CH2-CH2-NH2N is a natural number not less than 1, such as diethylenetriamine, triethylenetetramine, tetraethylenepentamine, 2) aromatic amines, such as: m-phenylenediamine, m-xylylenediamine, 4 '-diaminodiphenylmethane, 4' -diaminodiphenyl sulfone.
Wherein, if the aromatic amine is solid at the use temperature, it may be: 1) aromatic amine is mixed to form a mixture with a bottom eutectic point, for example, m-phenylenediamine and 4, 4' -diaminodiphenylmethane can obtain a mixture which is liquid at normal temperature; 2) aromatic amines are reacted with monoglycidyl ether to form liquid addition products, for example m-phenylenediamine is reacted with phenyl glycidyl ether to form liquid products.
More preferably, the curing agent is m-xylylenediamine.
In a preferred embodiment, the curing may be performed by using heat generated during the curing of the epoxy resin, or by additional heating.
In a more preferred embodiment, the maturation is performed at a temperature between 20 and 30 ℃.
In a more preferred embodiment, the aging is controlled to be 5 to 10 hours.
In a preferred embodiment, the weight ratio of epoxy resin to cellulose xanthate (or cellulose) is preferably from 1:5 to 15, more preferably from 1:8 to 10.
In a preferred embodiment, the weight ratio of epoxy resin to cellulose xanthate in the liquid adhesive is preferably 60 to 90wt%, more preferably 65 to 85wt%, and more preferably 70 to 80 wt%.
In a preferred embodiment, the sum of the weight of the epoxy resin and the weight of the cellulose accounts for 10 to 25 percent of the total weight of the protective layer, and more preferably 15 to 20 percent.
In the above content of the present invention, an additive may also be added to the liquid adhesive, and the additive may include one or more of a flame retardant, an antistatic agent, a bactericide, an antioxidant, and a toughening agent.
More preferably, the weight proportion of the additive in the liquid adhesive is not more than 2%.
In the above aspect of the present invention, the density of the PET nonwoven fabric is preferably 20 to 40g/cm2More preferably 25 to 35g/cm2More preferably 28 to 30g/cm2。
In the above aspect of the invention, the porosity of the PET non-woven fabric is more than or equal to 80%.
In the above aspect of the present invention, the linear density of the aramid fiber is selected from 30 to 60tex, more preferably 35 to 50tex, and still more preferably 40 to 45 tex.
In the above aspect of the present invention, the aramid fiber woven layer has an areal density of 60 to 120g/cm2Preferably 70 to 110g/cm2Preferably 80 to 100g/cm2。
The light protective clothing fabric and the protective clothing provided by the invention are light in weight, high in strength, good in heat insulation, light and comfortable to wear and good in protection.
Detailed Description
Example 1
1kg of epoxy resin is made into aqueous dispersion, 7kg of cellulose xanthate is dissolved in aqueous sodium hydroxide solution, and the two are mixed to form liquid adhesive with the concentration of 70 wt%.
15kg of a PET nonwoven fabric having an areal density of 35g/cm was provided2And the porosity is 85 percent. Providing two aramid fiber 1313 fiber spinning layers with the same thickness, wherein the total weight is 70kg, and the surface density of each aramid fiber spinning layer is 65g/cm2And the linear density of aramid fibers is 44 tex.
The PET non-woven fabric layer is clamped between the two aramid fiber woven layers to form the superposed base fabric.
Adding m-xylylenediamine into the liquid adhesive, immediately coating the liquid adhesive on the superposed base cloth, and applying pressure by using a roller or a brush to promote the liquid adhesive to permeate from the aramid fiber textile layer on one side to the aramid fiber textile layer on the other side. In the permeation process, molecular chains of the epoxy resin and the cellulose penetrate through the aramid fiber textile layer and penetrate through randomly distributed cavities in the PET non-woven fabric.
Continuously pressurizing until the pressure is more than or equal to 1.5 atmospheric pressure, maintaining the pressure, curing the epoxy resin in the presence of m-xylylenediamine, releasing heat in the curing process, maintaining the laminated base fabric at 25 ℃ for at least 5 hours, and reducing the esterification degree of the cellulose xanthate.
Removing water solvent, acid washing, superposing with base cloth, and neutralizing alkali. Drying to obtain the protective layer.
Example 2
1kg of epoxy resin is made into aqueous dispersion, 10kg of cellulose xanthate is dissolved in aqueous sodium hydroxide solution, and the two are mixed to form 65wt% liquid adhesive.
20kg of a PET nonwoven fabric having an areal density of 23g/cm was provided2And the porosity is 85 percent. Providing two aramid fiber 1313 textile layers with the same thickness, the total weight is 70kg, and the surface density is 70g/cm2And the linear density of aramid fibers is 44 tex.
The PET non-woven fabric layer is clamped between the two aramid fiber woven layers to form the superposed base fabric.
Adding m-xylylenediamine into the liquid adhesive, immediately coating the liquid adhesive on the superposed base cloth, and applying pressure by using a roller or a brush to promote the liquid adhesive to permeate from the aramid fiber textile layer on one side to the aramid fiber textile layer on the other side. In the permeation process, molecular chains of the epoxy resin and the cellulose penetrate through the aramid fiber textile layer and penetrate through randomly distributed cavities in the PET non-woven fabric.
Continuously pressurizing until the pressure is more than or equal to 1.5 atmospheric pressure, maintaining the pressure, curing the epoxy resin in the presence of m-xylylenediamine, releasing heat in the curing process, maintaining the laminated base fabric at 25 ℃ for at least 5 hours, and reducing the esterification degree of the cellulose xanthate.
Removing water solvent, acid washing, superposing with base cloth, and neutralizing alkali. Drying to obtain the protective layer.
Example 3
1kg of epoxy resin is made into aqueous dispersion, 12kg of cellulose xanthate is dissolved in aqueous sodium hydroxide solution, and the two are mixed to form liquid adhesive with the concentration of 80 wt%.
20kg of a PET nonwoven fabric was provided, and the areal density was 35g/cm2And the porosity is 85 percent. Providing two aramid 1313 fiber textile layers with the same thickness, the total weight of 70kg and the surface density of 80g/cm2And the linear density of aramid fibers is 44 tex.
And two aramid fiber textile layers are used for clamping the PET non-woven fabric layer in the middle to form the superposed base fabric.
Continuously pressurizing until the pressure is more than or equal to 1.5 atmospheric pressure, maintaining the pressure, adding m-xylylenediamine into the liquid adhesive, immediately coating the liquid adhesive on the superposed base fabric, and applying pressure by using a roller or a brush to promote the liquid adhesive to permeate from the aramid fiber textile layer on one side to the aramid fiber textile layer on the other side. In the permeation process, molecular chains of the epoxy resin and the cellulose penetrate through the aramid fiber textile layer and penetrate through randomly distributed cavities in the PET non-woven fabric.
In the presence of m-xylylenediamine, the epoxy resin is cured, heat is released in the curing process, the superposed base fabric is maintained at 25 ℃ for at least 5 hours, and the esterification degree of the cellulose xanthate is reduced.
Removing water solvent, acid washing, superposing with base cloth, and neutralizing alkali. Drying to obtain the protective layer.
Table 1 shows the results of the performance test of the fabrics of the present invention
The heat protection coefficient (TPP) is detected by adopting the GB8965.1-2009 standard, and as can be seen from the table 1, compared with the pure aramid 1313 fiber cloth, the fabric obtained by the invention has obviously higher heat protection coefficient under the condition of lower surface density, and the higher the heat protection coefficient is, the better the surface heat protection performance is.
The vertical combustion is carried out by adopting the GB/T5444-1997 standard, the smoldering time, the duration time and the melting dripping phenomenon are observed, and the table 1 shows that the fabric has no melting dripping, and the duration time and the smoldering time are both 0. Can meet the requirement of the fire-retardant property of the outer layer fabric of the fire-fighting heat-insulating suit.
Compared with pure aramid 1313 fiber cloth, the epoxy resin adhesive is added, so that the air permeability of the fabric is not affected, the moisture permeability is improved, the moisture permeability of aramid/cotton (50/50) or flame-retardant cotton fabric can be achieved, and the fabric has better wearing comfort compared with the aramid 1313 fabric.
Therefore, the fabric provided by the invention can be used as protective clothing, and the aramid protective clothing can be lightened while the basic protective performance of the aramid protective clothing is kept.
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (7)
1. A method for producing a light protective clothing fabric is characterized by comprising the following steps:
providing an epoxy resin aqueous dispersion, and adding an alkali solution of cellulose xanthate into the aqueous dispersion to obtain a liquid adhesive;
the PET non-woven fabric layer is sandwiched between two aramid fiber textile layers to form a superposed base fabric;
coating a liquid adhesive on the superposed base cloth to enable the liquid adhesive to permeate from the aramid fiber textile layer on one side to the aramid fiber textile layer on the other side; applying pressure to the overlying substrate;
curing the epoxy resin during the application of pressure, curing the cellulose xanthate to reduce the degree of esterification;
pickling and drying to obtain a protective layer;
the protective layer and other layers which may exist are made into protective clothing fabric;
wherein the density of the PET non-woven fabric is 20-40g/cm2The porosity is more than or equal to 80 percent; the weight ratio of the epoxy resin to the cellulose xanthate is 1: 5-15; the sum of the weight of the epoxy resin and the weight of the cellulose accounts for 10-25% of the total weight of the protective layer.
2. The method of claim 1, wherein the epoxy resin is a combination of one or more of glycidyl ether epoxy resin, glycidyl ester epoxy resin, glycidyl amine epoxy resin, aliphatic epoxy resin, and cycloaliphatic epoxy resin.
3. The method as claimed in claim 1, wherein the aramid fiber linear density is selected from 30-60tex, and the aramid fiber woven layer has an areal density of 60-120g/cm2。
4. The method of claim 1, wherein the curing is:
1) adding a curing agent for curing, and adding the curing agent into the liquid adhesive before curing; or
2) Adding photoinitiator, and curing under the action of ultraviolet rays.
5. The method according to claim 1, wherein said aging is carried out at 20-30 ℃ for 5-10 hours.
6. A portable protective clothing fabric produced by the method of claim 1, wherein the portable protective clothing fabric comprises a protective layer, the protective layer comprises a PET non-woven fabric layer and an aramid fiber woven layer which are stacked, and epoxy resin and cellulose molecular chains penetrate through gaps of the PET non-woven fabric layer and the aramid fiber woven layer to connect the PET non-woven fabric layer and the aramid fiber layer.
7. A portable protective garment, characterized in that the portable protective garment is made of the portable protective garment fabric according to claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910146941.9A CN109823009B (en) | 2019-02-27 | 2019-02-27 | Light protective clothing fabric and protective clothing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910146941.9A CN109823009B (en) | 2019-02-27 | 2019-02-27 | Light protective clothing fabric and protective clothing |
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| Publication Number | Publication Date |
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| CN109823009A CN109823009A (en) | 2019-05-31 |
| CN109823009B true CN109823009B (en) | 2021-05-25 |
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| CN201910146941.9A Active CN109823009B (en) | 2019-02-27 | 2019-02-27 | Light protective clothing fabric and protective clothing |
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| CN113796605B (en) * | 2021-07-22 | 2023-05-30 | 圣华盾防护科技股份有限公司 | Medical protective clothing fabric resistant to repeated decontamination and protective clothing |
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| CN205884723U (en) * | 2016-07-13 | 2017-01-18 | 杭州威垒特科技有限公司 | Preventing arcing dress |
| CN107558241A (en) * | 2017-09-20 | 2018-01-09 | 安徽锦翔纺织服饰有限公司 | A kind of fire-retardant charge garment fabric of arc protection and preparation method thereof |
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