CN109320802A - A kind of novel rubber plastic heat-insulating pipe and preparation method thereof - Google Patents
A kind of novel rubber plastic heat-insulating pipe and preparation method thereof Download PDFInfo
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- CN109320802A CN109320802A CN201810958738.7A CN201810958738A CN109320802A CN 109320802 A CN109320802 A CN 109320802A CN 201810958738 A CN201810958738 A CN 201810958738A CN 109320802 A CN109320802 A CN 109320802A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2309/02—Copolymers with acrylonitrile
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
- C08J2423/28—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
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- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2427/06—Homopolymers or copolymers of vinyl chloride
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- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
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Abstract
The present invention provides a kind of novel rubber plastic heat-insulating pipe and preparation method thereof, the formula provided through the invention is using the rubber-plastic foamed heat preservation waste material for being difficult to degrade as one of raw material, and cooperate preparation process of the invention, enable rubber-plastic foamed heat preservation waste material cycling and reutilization by reprocessing, it is environmentally protective, be conducive to ecological chain hair benign cycle.And the novel rubber plastic heat-insulating pipe that the present invention is prepared has excellent performance, can be widely used in the fields such as building.
Description
Technical field
The present invention relates to rubber-plastics material field, in particular to a kind of novel rubber plastic heat-insulating pipe and preparation method thereof.
Background technique
Rubber-plastic foamed insulating product be a kind of high fire-retardance and heat preservation etc. all very excellent product of properties, thus its
It is more and more favored in the market, but because solid cure, waste material have been difficult to be handled by degrading or burning for it.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of novel rubber plastic heat-insulating pipes and preparation method thereof.
The technical scheme to solve the above technical problems is that
A kind of novel rubber plastic heat-insulating pipe, the raw material components including following weight:
Further, the anti-aging agent is antioxidant 4020.
Further, the polyvinyl chloride is polyvinyl chloride S700.
It further, further include promotor, sulphur and zinc oxide.
Further, the promotor includes at least one of promotor PZ and diphenylguanidine PTT.
A kind of preparation method of novel rubber plastic heat-insulating pipe, comprising the following steps:
Pulverising step: rubber and plastic waste material is ground into waste granules；
Mixing step 1: nitrile rubber and butadiene rubber are mixed, and mixing 30s obtains intermediate product A；
Mixing step 2: by waste granules, polyvinyl chloride, haloflex, WAX, aluminium hydroxide, anti-aging agent, oil
Cream, cytidine, antimony oxide, chlorinated paraffin, calcium stearate are mixed with the intermediate product A, mixing to 130-135
DEG C, obtain intermediate product B；
Mixing step 3: aluminium hydroxide and chlorinated paraffin are mixed with the intermediate product B, mixing to 145-155
DEG C, obtain intermediate product C；
Mixing step 4: azodicarbonamide is mixed with the intermediate product C, after suppressing 60s by lower top bolt
Obtain intermediate product D；
Mill step: it is tabletted to the intermediate product D mill 5min, and after cooling down 20min to it, obtain one
Secondary sheet material；
Secondary mixing step: promotor, sulphur, zinc oxide are mixed with a sheet material, after mixing 60s, obtained intermediate
Product E；
Secondary mill step: it is tabletted to the intermediate product E mill 5min, and after cooling down 10min to it, obtain two
Secondary sheet material；
Extrusion step: the secondary sheet material is molded, and forms tubing；
Sulfur foam step: sulfur foam is carried out to the tubing, obtains novel rubber plastic heat-insulating pipe.
Further, in the pulverising step, rubber and plastic waste material is ground into the waste granules of 60-80 mesh.
The beneficial effects of the present invention are:
The formula provided through the invention cooperates this using the rubber-plastic foamed heat preservation waste material for being difficult to degrade as one of raw material
The preparation process of invention enables rubber-plastic foamed heat preservation waste material cycling and reutilization by reprocessing, environmentally protective, is conducive to give birth to
The hair benign cycle of state chain.And the novel rubber plastic heat-insulating pipe that the present invention is prepared has excellent performance, can be widely used in
The fields such as building.
Detailed description of the invention
Fig. 1 is the flow chart of the preparation method of the novel rubber plastic heat-insulating pipe of one embodiment.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
The present invention provides a kind of novel rubber plastic heat-insulating pipe, the raw material components including following weight:
Wherein, the rubber and plastic waste material is the waste material of rubber-plastic foamed insulating product, and the formula provided through the invention will be difficult to
The rubber-plastic foamed heat preservation waste material of degradation cooperates preparation method of the invention as one of raw material, by reprocessing so that rubber and plastic
Foamed heat insulating waste material can cycling and reutilization, it is environmentally protective, be conducive to ecological chain hair benign cycle.
Specifically, the body material for forming the novel rubber plastic heat-insulating pipe is nitrile rubber, polyvinyl chloride, wherein this
The model polyvinyl chloride S700 of polyvinyl chloride in invention, butadiene rubber, haloflex and rubber and plastic waste material are auxiliary material, match
With various auxiliary addition agents novel rubber plastic heat-insulating pipe is made, wherein calcium stearate is as plasticizer, heat stabilizer and lubrication
Agent, the aluminium hydroxide are used as fire retardant and filler, described anti-old to improve processing performance, Mechanical Properties of Products
Agent is used to delay the aging of macromolecule chemical combination, in one embodiment of the invention, the model anti-aging agent of the anti-aging agent
4020, the cytidine is antiscorching agent is used for preventing rubber size from generating prevulcanization phenomenon in process
In delaying sizing material presulfurization degree, solve the problems, such as that finished product foaming is easy to crack, the antimony oxide is as filler and fire retardant
Use, the WAX is wax, is used as compounding agent, the azodicarbonamide uses as foaming agent, keep generation aperture close and
Uniform product foaming effect, to increase the physical properties such as the elasticity of product, the chlorinated paraffin as extender plasticizer with
Fire retardant uses, wherein novel rubber plastic heat-insulating pipe of the invention further includes promotor, sulphur and zinc oxide, and the sulphur is
Vulcanizing agent is used in intermolecular bridging action of line style, so that being mutually bonded multiple linear molecules is cross-linked into three-dimensional netted knot
Structure, the promotor are the vulcanization accelerator for promoting vulcanization, are used cooperatively with vulcanizing agent, and the friendship of rubber and plastic cement is promoted
Connection, specifically, the promotor includes promotor PZ (zinc dimethyl dithiocarbamate) and diphenylguanidine PTT (tetra-sulfurized pair
At least one of pentamethylene thiuram), for example, the promotor is promotor PZ, for example, the promotor is promotor
DPTT, for example, the promotor is the mixture of promotor PZ and diphenylguanidine PTT, wherein zinc oxide is as raising sulphidity
Activating agent, only addition is a small amount of can be improved its sulphidity.It respectively ensure that the reaction of sulfidation.
The present invention provides the preparation method of above-mentioned novel rubber plastic heat-insulating pipe, as shown in Figure 1, comprising the following steps:
Step 100, rubber and plastic waste material is ground into waste granules, this step is also referred to as pulverising step.
Specifically, in this step, the rubber and plastic waste material of 10.0-20.0 parts by weight is ground into the waste granules of 60-80 mesh, example
Such as, it is crushed using pulverizer.Small particle is more advantageous to waste material and disperses in rubber and plastic refining glue, so that waste granules are easier
It is mixed in subsequent step with other raw materials, auxiliary agent, that is, to react more balanced, thorough.
Step 110, nitrile rubber and butadiene rubber are mixed, mixing 30s obtains intermediate product A.This step is also referred to as primary
Mixing step 1.
Specifically, in this step, by the suitable fourth rubber of the nitrile rubber of 130.0-150.0 parts by weight and 4.0-7.5 parts by weight
Glue mixing, with mixer mixing 30 seconds, obtains intermediate product A.
Step 120, by waste granules, polyvinyl chloride, haloflex, WAX, aluminium hydroxide, anti-aging agent, ointment, three phosphorus
Sour cytidine, antimony oxide, chlorinated paraffin, calcium stearate are mixed with the intermediate product A, and mixing obtains intermediate to 130-135 DEG C
Product B.This step is also referred to as a mixing step 2.
Specifically, in this step, by the waste granules of 10.0-20.0 parts by weight, the polychlorostyrene second of 65.0-83.0 parts by weight
Alkene, the haloflex of 20.0-25.0 parts by weight, 20.0-27.0 parts by weight WAX, 125.0-130.0 parts by weight hydroxide
Aluminium, the anti-aging agent of 5.5-7.0 parts by weight, the ointment of 5.0-5.5 parts by weight, the cytidine of 1.7-2.5 parts by weight, 75.0-
The antimony oxide of 80.0 parts by weight, the chlorinated paraffin of 165.0-180.0 parts by weight, 2.7-4.0 parts by weight calcium stearate add
Enter in mixer and mixed with intermediate product A, mixing obtains intermediate product B to 135 DEG C.
In a preferred embodiment, in a mixing step 2, also addition stearic acid and intermediate product A is mixed
It closes, the stearic acid uses as vulcanizing activator and foaming agent, the activity of promotor can be improved, keep promotor further abundant
Play its maximum facilitation.
In this step, by adjusting the additive amount of plasticizer, the time plasticated for the first time can be extended, make waste granules with
Other stock dispersions obtain more preferably, to solve consistency problem when waste and the mixing of other raw materials.
Wherein, the polyvinyl chloride referred in this step can be polyvinyl chloride S700, for example, the anti-aging agent is anti-aging agent
4020。
Step 130, aluminium hydroxide and chlorinated paraffin are mixed with the intermediate product B, mixing is obtained to 145-155 DEG C
Between product C.This step is also referred to as a mixing step 3.
Specifically, in this step, remaining aluminium hydroxide and chlorinated paraffin are mixed with the intermediate product B, that is,
By the chlorinated paraffins of the aluminium hydroxide of 125.0-135.0 parts by weight, 100.0-115.0 parts by weight be added in mixer with by product
B mixing, mixing obtain intermediate product C to 150 DEG C.
Step 140, azodicarbonamide is mixed with the intermediate product C, obtains intermediate produce after suppressing 60s by lower top bolt
Object D.This step is also referred to as a mixing step 4.
Specifically, in this step, the azodicarbonamide of 110.0-125.0 parts by weight is added in mixer and is produced with centre
Object C mixing obtains intermediate product D after suppressing 60 seconds by lower top bolt.
Step 150, tabletted to the intermediate product D mill 5min, and after cooling down 20min to it, obtain primary piece
Material.This step is also referred to as a mill step.
Specifically, the mill of this step is carried out by opening rubber mixing machine, for example, the intermediate product D that will be obtained after mixing
It is transferred on open mill to its mill.Wherein cooling can be used air-cooled unit and cool down to it.
Step 160, promotor, sulphur, zinc oxide are mixed with a sheet material, after mixing 60s, obtains intermediate product E.
This step is also referred to as secondary mixing step.
Specifically, a sheet material obtained above is transferred to mixing system, by adding appropriate promotor, sulphur, oxygen
Change zinc to mix with sheet material, mixing obtains intermediate product E after 60 seconds.
Wherein, the promotor includes at least one of promotor PZ and diphenylguanidine PTT.
In one embodiment, a kind of novel rubber plastic heat-insulating pipe, the raw material components including following weight: rubber and plastic
Waste material 10.0-20.0；Nitrile rubber 130.0-150.0；Butadiene rubber 4.0-7.5；Anti-aging agent 5.5-7.0；Polyvinyl chloride 65.0-
83.0；Haloflex 20.0-25.0；Antimony oxide 75.0-80.0；Calcium stearate 2.7-4.0；Ointment 5.0-5.5；Chlorine
Fossil waxes 265.0-280.0；Aluminium hydroxide 250.0-260.0；Azodicarbonamide 110.0-125.0；Cytidine 1.7-
2.5；WAX20.0-27.0；Promotor 8.0-10.0；Sulphur 12.0-15.0；Zinc oxide 7.5-13.0.
Step 170, tabletted to the intermediate product E mill 5min, and after cooling down 10min to it, obtain secondary
Material.This step is also referred to as secondary mill step.
Specifically, the mill of this step is carried out by opening rubber mixing machine, for example, the intermediate product E that will be obtained after mixing
It is transferred on open mill to its mill.Wherein cooling can be used air-cooled unit and cool down to it.
Step 180, the secondary sheet material is molded, forms tubing.This step is also referred to as extrusion step.
Wherein, the tubing of this step is molded, and is completed especially by extruder, in an extruder, secondary sheet material
It is formed through specific mold, forms tubing.
Step 190, sulfur foam is carried out to the tubing, obtains novel rubber plastic heat-insulating pipe.This step also referred to as vulcanizes
Foaming step.
Specifically, the sulfur foam of this step carries out in an oven, is vulcanized by the molding tubing of extruder in baking oven and is sent out
Bubble forms novel rubber plastic heat-insulating pipe.
The present invention is further described with embodiment below.
Embodiment 1
The rubber and plastic waste material of 20.0 parts by weight is ground into the waste granules of 60-80 mesh by pulverizer.
In mixing system, the nitrile rubber of 140.0 parts by weight and the butadiene rubber of 6.0 parts by weight are mixed, mixing 30
After second, intermediate product A is obtained.
By the waste granules of 20.0 parts by weight, the polyvinyl chloride S700 of 75.0 parts by weight, 25.0 parts by weight chlorinated polyethylene
Alkene, the WAX of 27.0 parts by weight, the aluminium hydroxide of 125.0 parts by weight, the antioxidant 4020 of 6.0 parts by weight, 5.5 parts by weight oil
Cream, the cytidine of 2.0 parts by weight, the antimony oxide of 75.0 parts by weight, the chlorinated paraffin of 170.0 parts by weight, 3.7 weights
The calcium stearate of amount part is added in mixing system to be mixed with intermediate product A, and mixing obtains intermediate product B to 135 DEG C.
By the aluminium hydroxide of 125.0 parts by weight and the chlorinated paraffin of 100.0 parts by weight be added in mixing system with by product B
Mixing, mixing obtain intermediate product C to 150 DEG C.
The azodicarbonamide of 117.0 parts by weight is added in mixing system and is mixed with intermediate product C, lower top bolt pressure is passed through
System obtains intermediate product D after 60 seconds.
It is tabletted by the intermediate product D mill 5min in mill system, after its air-cooled 20min, obtain once
Sheet material.
Sheet material is again transferred to mixing system, by the promotor PZ of 5.0 parts by weight, the promotor of 5.0 parts by weight
DPTT, the sulphur of 13.0 parts by weight, 7.8 parts by weight zinc oxide mixed with sheet material, mixing obtains intermediate product E after 60 seconds.
It is tabletted to the intermediate product E mill 5min in mill system, after its air-cooled 10min, obtain secondary
Sheet material.
By extruder, the secondary sheet material is molded, secondary sheet material is formed through specific mold, forms pipe
Material.
Finally, carrying out sulfur foam to the tubing in an oven, novel rubber plastic heat-insulating pipe is obtained.
After tested, novel rubber plastic heat-insulating pipe obtained has low thermal conductivity in the present embodiment, and mean temperature is 0 DEG C
When, thermal coefficient is 0.036W/ (m*k), and its surface heat transfer coefficient is high, therefore under identical environmental condition, the present invention
Novel rubber plastic heat-insulating pipe thickness only need to be other thermal insulation materials to can mostly reach identical heat insulation effect, save
Save space and resource, and the novel rubber plastic heat-insulating pipe flexility, vibration characteristic are good, are utilized by reprocessing rubber and plastic waste material,
Waste material is turned waste into wealth, it is environmentally protective.
The following are the test experiments data of novel rubber plastic heat-insulating pipe made from the present embodiment:
Table 1
Embodiment 2
The rubber and plastic waste material of 20.0 parts by weight is ground into the waste granules of 60-80 mesh by pulverizer.
In mixing system, the nitrile rubber of 130.0 parts by weight and the butadiene rubber of 7.0 parts by weight are mixed, mixing 30
After second, intermediate product A is obtained.
By the waste granules of 20.0 parts by weight, the polyvinyl chloride S700 of 65.0 parts by weight, 20.0 parts by weight chlorinated polyethylene
Alkene, the WAX of 27.0 parts by weight, the aluminium hydroxide of 125.0 parts by weight, the antioxidant 4020 of 6.0 parts by weight, 5.5 parts by weight oil
Cream, the cytidine of 2.0 parts by weight, the antimony oxide of 75.0 parts by weight, the chlorinated paraffin of 170.0 parts by weight, 3.7 weights
The calcium stearate of amount part is added in mixing system to be mixed with intermediate product A, and mixing obtains intermediate product B to 135 DEG C.
By the aluminium hydroxide of 125.0 parts by weight and the chlorinated paraffin of 100.0 parts by weight be added in mixing system with by product B
Mixing, mixing obtain intermediate product C to 150 DEG C.
The azodicarbonamide of 117.0 parts by weight is added in mixing system and is mixed with intermediate product C, lower top bolt pressure is passed through
System obtains intermediate product D after 60 seconds.
It is tabletted by the intermediate product D mill 5min in mill system, after its air-cooled 20min, obtain once
Sheet material.
Sheet material is again transferred to mixing system, by the promotor PZ of 5.0 parts by weight, the promotor of 5.0 parts by weight
DPTT, the sulphur of 13.0 parts by weight, 7.8 parts by weight zinc oxide mixed with sheet material, mixing obtains intermediate product E after 60 seconds.
It is tabletted to the intermediate product E mill 5min in mill system, after its air-cooled 10min, obtain secondary
Sheet material.
By extruder, the secondary sheet material is molded, secondary sheet material is formed through specific mold, forms pipe
Material.
Finally, carrying out sulfur foam to the tubing in an oven, novel rubber plastic heat-insulating pipe is obtained.
After tested, novel rubber plastic heat-insulating pipe obtained has low thermal conductivity in the present embodiment, and mean temperature is 0 DEG C
When, thermal coefficient is 0.036W/ (m*k), and its surface heat transfer coefficient is high, therefore under identical environmental condition, the present invention
Novel rubber plastic heat-insulating pipe thickness only need to be other thermal insulation materials to can mostly reach identical heat insulation effect, save
Save space and resource, and the novel rubber plastic heat-insulating pipe flexility, vibration characteristic are good, are utilized by reprocessing rubber and plastic waste material,
Waste material is turned waste into wealth, it is environmentally protective.
The following are the test experiments data of novel rubber plastic heat-insulating pipe made from the present embodiment:
Table 2
It tests by contrast, by changing the proportion between rubber raw materials and plastic raw materials between embodiment 1 and embodiment 2,
So that the novel rubber plastic heat-insulating pipe being finally prepared produces certain performance difference, such as the pressure of the finished product in embodiment 1
Contracting rebound degree and tensile strength are than good in embodiment 2.It, can be by adjusting rubber raw materials, plastic cement in formula according to production requirement
The novel rubber plastic heat-insulating pipe of different performance is made in proportion etc. between raw material and each auxiliary agent, wherein embodiment 1 is the present invention
The preferred plan provided.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (7)
1. a kind of novel rubber plastic heat-insulating pipe, which is characterized in that the raw material components including following weight:
2. novel rubber plastic heat-insulating pipe as described in claim 1, which is characterized in that the anti-aging agent is antioxidant 4020.
3. novel rubber plastic heat-insulating pipe as described in claim 1, which is characterized in that the polyvinyl chloride is polyvinyl chloride
S700。
4. novel rubber plastic heat-insulating pipe as described in claim 1, which is characterized in that further include promotor, sulphur and zinc oxide.
5. novel rubber plastic heat-insulating pipe as claimed in claim 4, which is characterized in that the promotor includes promotor PZ and rush
Into at least one of agent DPTT.
6. a kind of preparation method of novel rubber plastic heat-insulating pipe, which comprises the following steps:
Pulverising step: rubber and plastic waste material is ground into waste granules；
Mixing step 1: nitrile rubber and butadiene rubber are mixed, and mixing 30s obtains intermediate product A；
Mixing step 2: by waste granules, polyvinyl chloride, haloflex, WAX, aluminium hydroxide, anti-aging agent, ointment, three
Cytidine phosphate, antimony oxide, chlorinated paraffin, calcium stearate mix with the intermediate product A, and mixing is obtained to 130-135 DEG C
Between product B；
Mixing step 3: aluminium hydroxide and chlorinated paraffin are mixed with the intermediate product B, mixing is obtained to 145-155 DEG C
Intermediate product C；
Mixing step 4: azodicarbonamide is mixed with the intermediate product C, in obtaining after lower top bolt compacting 60s
Between product D；
Mill step: it is tabletted to the intermediate product D mill 5min, and after cooling down 20min to it, obtain primary piece
Material；
Secondary mixing step: promotor, sulphur, zinc oxide are mixed with a sheet material, after mixing 60s, obtain intermediate product
E；
Secondary mill step: it is tabletted to the intermediate product E mill 5min, and after cooling down 10min to it, obtain secondary
Material；
Extrusion step: the secondary sheet material is molded, and forms tubing；
Sulfur foam step: sulfur foam is carried out to the tubing, obtains novel rubber plastic heat-insulating pipe.
7. the preparation method of novel rubber plastic heat-insulating pipe as claimed in claim 6, which is characterized in that in the pulverising step,
Rubber and plastic waste material is ground into the waste granules of 60-80 mesh.
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| CN112521671A (en) * | 2020-12-04 | 2021-03-19 | 武汉格美高科实业有限公司 | Impact-resistant rubber-plastic air-conditioning heat-insulating pipe |
| CN113943463A (en) * | 2021-12-02 | 2022-01-18 | 惠州优比贝柠科技股份有限公司 | Closed bubble type structural pipe and preparation method thereof |
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Application publication date: 20190212 |