CN106566133A - Environmentally-friendly PVC foamed material - Google Patents

Environmentally-friendly PVC foamed material Download PDF

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Publication number
CN106566133A
CN106566133A CN201610967842.3A CN201610967842A CN106566133A CN 106566133 A CN106566133 A CN 106566133A CN 201610967842 A CN201610967842 A CN 201610967842A CN 106566133 A CN106566133 A CN 106566133A
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Prior art keywords
parts
foaming
environment
friendly pvc
expanded
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Pending
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CN201610967842.3A
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Chinese (zh)
Inventor
刘齐松
韦旭峰
姜海军
胡江红
方厚兵
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ZHEJIANG SHENTENG COATED FABRICS Co Ltd
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ZHEJIANG SHENTENG COATED FABRICS Co Ltd
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Priority to CN201610967842.3A priority Critical patent/CN106566133A/en
Publication of CN106566133A publication Critical patent/CN106566133A/en
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06Working-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
    • C08J9/10Working-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
    • C08J9/102Azo-compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06Working-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
    • C08J9/10Working-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
    • C08J9/102Azo-compounds
    • C08J9/103Azodicarbonamide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06Working-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
    • C08J9/10Working-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
    • C08J9/104Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
    • C08J9/105Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06Working-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
    • C08J9/10Working-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
    • C08J9/107Nitroso compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02Organic and inorganic ingredients
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24Acids; Salts thereof
    • C08K3/26Carbonates; Bicarbonates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/32Phosphorus-containing compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/09Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00Foams characterized by the expanding agent
    • C08J2203/04N2 releasing, ex azodicarbonamide or nitroso compound
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00Characterised 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
    • C08J2327/02Characterised 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
    • C08J2327/04Characterised 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
    • C08J2327/06Homopolymers or copolymers of vinyl chloride
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2296Oxides; Hydroxides of metals of zinc
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/32Phosphorus-containing compounds
    • C08K2003/321Phosphates
    • C08K2003/327Aluminium phosphate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/14Applications used for foams

Abstract

The invention discloses an environmentally-friendly PVC foamed material. The environmentally-friendly PVC foamed material is prepared through mixing, by weight, 100 parts of PVC, 1-20 parts of a foaming agent, 0.5-15 parts of a foaming crosslinking agent, 1-20 parts of a peculiar smell remover, 0.5-10 parts of zinc oxide, 0.5-10 parts of stearic acid, 80-100 parts of a plasticizer, 70-90 parts of calcium carbonate, 1-3 parts of a stabilizer and 8-12 parts of a color paste. The environmentally-friendly PVC foamed material has the advantages of environmental protection, odorlessness, good foamed effect, low cost, no change of present foaming technologies, and no use of new machines.

Description

A kind of environment-friendly PVC expanded material
Technical field
The present invention relates to a kind of expanded material, more particularly to a kind of environment-friendly PVC expanded material.
Background technology
Expanded material contains a large amount of bubbles due to internal, compared with traditional material, not only light weight, material-saving, and can inhale Shock loading is received, during the protection of various products and packaging are widely used in excellent shock-absorbing capacity.At present, it is common Expanded material have polyvinyl chloride(PVC), poly- ammonia it is cruel(PU), polyolefin(PE、PP), the vinyl acetate of ethene one cruel (EVA), thermoplastic Property rubber (TPR) etc., wherein PVC foam material have good mechanical property and caking property, easy to process, with low cost because of it The advantages of, have great importance in actual productive life.
Especially in artificial leather field, because PVC has product strength high, handling ease, the advantages of with low cost, PVC Become the one of main original of artificial leather.In PVC artificial leather production process, need foaming to form microcellular structure, give it Finished product light weight, good hand feeling, soft advantage.Then,
The foaming agent that at present PVC is adopted is generally azodicarbonamide class foaming agent, and larger smell is produced in foaming process, And this smell can be remained in product, the application of PVC artificial leather is directly affects, one is caused to the life health of the mankind Determine the threat of degree.Therefore, it is current problem demanding prompt solution to find a kind of PVC foam material of environmental protection.
The content of the invention
It is an object of the invention to provide a kind of environment-friendly PVC expanded material, with environment-friendly tasteless, foaming effect be good, cost It is cheap, do not change existing foam process, without new machinery equipment is increased the advantages of.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of environment-friendly PVC expanded material, by weight, is mixed by following raw material components:100 parts of PVC, foaming agent 1- 20 parts, crosslinking agent 0.5-15 parts of foaming, foreign smell eliminating agent 1-20 parts, zinc oxide 0.5-10 parts, stearic acid 0.5-10 parts, plasticizer 80-100 parts, calcium carbonate 70-90 parts, stabilizer 1-3 parts, color 8-12 parts.
The core of the present invention is to add foreign smell eliminating agent in expanded material formula, can effectively eliminate and foam The peculiar smell produced in journey and poisonous and harmful substance, meanwhile, the foreign smell eliminating agent of selection will not also change the spy of PVC material itself Property, on the performance of expanded material without impact.
Preferably, the foreign smell eliminating agent is aluminium triphosphate, aluminium dihydrogen tripolyphosphate, aluminium dihydrogen phosphate, phosphoric acid one One or more in hydrogen aluminium, aluminum phosphate.
Preferably, the foaming agent be azodicarbonamide, azodiisobutyronitrile, dinitrosopentamethylene tetramine, One or more in 4,4 '-OBSH.
Preferably, the foaming crosslinking agent is the one kind in cumyl peroxide, dual-tert-butyl peroxy isopropyl base benzene Or two kinds.
Preferably, the plasticizer is one or more in DOTP, DPHP plasticizer.
Preferably, the stabilizer is calcium-zinc composite stabilizing agent.
The invention has the beneficial effects as follows:
(1)Expanded material has the advantages that foaming effect is good, with low cost.
(2)Existing foam process need not be changed, without increasing new machinery equipment.
(3)The peculiar smell and poisonous and harmful substance produced in foaming process can be effectively eliminated.
(4)The stability and repeatability of expanded material foaming is all fine, and preparation method is simple, environmentally friendly without dirt Dye, there is good commercial application prospect.
Specific embodiment
Below by specific embodiment, technical scheme is described in further detail.
In the present invention, if not refering in particular to, the raw material for being adopted and equipment etc. are commercially available or commonly used in the art. Method in following embodiments, if no special instructions, is the conventional method of this area.
Total embodiment:
A kind of environment-friendly PVC expanded material, by weight, is mixed by following raw material components:100 parts of PVC, foaming agent 1- 20 parts, crosslinking agent 0.5-15 parts of foaming, foreign smell eliminating agent 1-20 parts, zinc oxide 0.5-10 parts, stearic acid 0.5-10 parts, plasticizer 80-100 parts, calcium carbonate 70-90 parts, stabilizer 1-3 parts, color(Commercially available PVC colors)8-12 parts.The foreign smell eliminating agent is three One or more in poly aluminium phosphate, aluminium dihydrogen tripolyphosphate, aluminium dihydrogen phosphate, the hydrogen aluminium of phosphoric acid one, aluminum phosphate.The foaming agent For the one kind in azodicarbonamide, azodiisobutyronitrile, dinitrosopentamethylene tetramine, 4,4 '-OBSH Or it is several.The foaming crosslinking agent is one or two in cumyl peroxide, dual-tert-butyl peroxy isopropyl base benzene.It is described Plasticizer is one or more in DOTP, DPHP plasticizer.The stabilizer is calcium-zinc composite stabilizing agent (It is commercially available).
Specific embodiment
Embodiment 1:
A kind of environment-friendly PVC expanded material, by weight, is mixed by following raw material components:5 parts of azodicarbonamide, mistake 2 parts of diisopropylbenzene (DIPB) of oxidation, 20 parts of aluminium dihydrogen phosphate, zinc oxide is 2 parts, 5 parts of stearic acid, 90 parts of DOTP, carbon 80 parts of sour calcium, 2 parts of calcium-zinc composite stabilizing agent, 9 parts of color carries out conventional foaming using above-mentioned formula and 100 parts of PVC, foams Journey and the equal free from extraneous odour of the expanded material for obtaining.Testing result:Formamide is less than 50 ppm;Acetophenone is less than 50 ppm;N- methyl Formamide is less than 50 ppm;N,N-dimethylformamide is less than 50 ppm.
Embodiment 2:
A kind of environment-friendly PVC expanded material, by weight, is mixed by following raw material components:10 parts of azodiisobutyronitrile, mistake 3 parts of diisopropylbenzene (DIPB) of oxidation, 15 parts of aluminium triphosphate, zinc oxide is 5 parts, 10 parts of stearic acid, 85 parts of DOTP, carbon 90 parts of sour calcium, 3 parts of calcium-zinc composite stabilizing agent, 11 parts of color carries out conventional foaming using above-mentioned formula and 100 parts of PVC, foams Journey and the equal free from extraneous odour of the expanded material for obtaining.Testing result:Formamide is less than 60 ppm, and acetophenone is less than 60 ppm, N- methyl Formamide is less than 60 ppm;N,N-dimethylformamide is less than 60 ppm.
Embodiment 3:
A kind of environment-friendly PVC expanded material, by weight, is mixed by following raw material components:4,4 '-OBSH 12 parts, 4 parts of dual-tert-butyl peroxy isopropyl base benzene, 10 parts of one hydrogen aluminium of phosphoric acid, zinc oxide is 5 parts, 8 parts of stearic acid, DPHP plasticizer (It is commercially available)100 parts, 85 parts of calcium carbonate, 2.5 parts of calcium-zinc composite stabilizing agent, 12 parts of color is entered using above-mentioned formula with 100 parts of PVC The conventional foaming of row, foaming process and the equal free from extraneous odour of the expanded material for obtaining.Testing result:Formamide is less than 80 ppm;Acetophenone Less than 80 ppm;N-METHYLFORMAMIDE is less than 80 ppm;N,N-dimethylformamide is less than 80 ppm.
Embodiment 4:
A kind of environment-friendly PVC expanded material, by weight, is mixed by following raw material components:Dinitroso pentamethylene four 10 parts of amine, 5 parts of cumyl peroxide, 10 parts of aluminium dihydrogen tripolyphosphate, zinc oxide is 3 parts, 6 parts of stearic acid, terephthalic acid (TPA) 80 parts of dioctyl ester, 70 parts of calcium carbonate, 1 part of calcium-zinc composite stabilizing agent, 10 parts of color is carried out often using above-mentioned formula and 100 parts of PVC Rule foaming, foaming process and the equal free from extraneous odour of the expanded material for obtaining.Testing result:Formamide is less than 10ppm;Acetophenone is low by 70 ppm;N-METHYLFORMAMIDE is less than 70 ppm;N,N-dimethylformamide is less than 70 ppm.
Embodiment 5:
A kind of environment-friendly PVC expanded material, by weight, is mixed by following raw material components:8 parts of azodicarbonamide, mistake 3 parts of diisopropylbenzene (DIPB) of oxidation, 12 parts of aluminum phosphate, zinc oxide is 3 parts, 6 parts of stearic acid, 95 parts of DPHP plasticizer, 75 parts of calcium carbonate, calcium 1.5 parts of zinc composite stabilizer, 8 parts of color carries out conventional foaming using above-mentioned formula and 100 parts of PVC, foaming process and obtains The equal free from extraneous odour of expanded material.Testing result:Formamide is less than 60 ppm;Acetophenone is less than 60 ppm;N-METHYLFORMAMIDE is less than 60 ppm;N,N-dimethylformamide is less than 60 ppm.
Embodiment described above is one kind preferably scheme of the present invention, not makees any pro forma to the present invention Limit, also have other variants and remodeling on the premise of without departing from the technical scheme described in claim.

Claims (6)

1. a kind of environment-friendly PVC expanded material, it is characterised in that by weight, be mixed by following raw material components:PVC 100 parts, foaming agent 1-20 parts, crosslinking agent 0.5-15 parts of foaming, foreign smell eliminating agent 1-20 parts, zinc oxide 0.5-10 parts, stearic acid 0.5-10 parts, plasticizer 80-100 parts, calcium carbonate 70-90 parts, stabilizer 1-3 parts, color 8-12 parts.
2. a kind of environment-friendly PVC expanded material according to claim 1, it is characterised in that the foreign smell eliminating agent is trimerization One or more in aluminum phosphate, aluminium dihydrogen tripolyphosphate, aluminium dihydrogen phosphate, the hydrogen aluminium of phosphoric acid one, aluminum phosphate.
3. a kind of environment-friendly PVC expanded material according to claim 1 and 2, it is characterised in that the foaming agent is azo two One or more in formamide, azodiisobutyronitrile, dinitrosopentamethylene tetramine, 4,4 '-OBSH.
4. a kind of environment-friendly PVC expanded material according to claim 1 and 2, it is characterised in that the foaming crosslinking agent was Oxidation diisopropylbenzene (DIPB), one or two in dual-tert-butyl peroxy isopropyl base benzene.
5. a kind of environment-friendly PVC expanded material according to claim 1 and 2, it is characterised in that the plasticizer is to benzene two One or more in formic acid dioctyl ester, DPHP plasticizer.
6. a kind of environment-friendly PVC expanded material according to claim 1 and 2, it is characterised in that the stabilizer is multiple for calcium zinc Close stabilizer.
CN201610967842.3A 2016-11-03 2016-11-03 Environmentally-friendly PVC foamed material Pending CN106566133A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0543760A (en) * 1991-08-12 1993-02-23 Chisso Corp Rigid vinyl chloride-based resin composition
CN1296031A (en) * 1999-11-12 2001-05-23 中国石油化工集团公司北京化工研究院 Process for preparation polyvinyl-chloride foaming material
CN102558709A (en) * 2011-12-21 2012-07-11 常州大学 Flexible polyvinyl chloride foam material and molding method thereof
CN103205010A (en) * 2013-04-22 2013-07-17 华东理工大学 Preparation method of PVC (polyvinyl chloride) plastic-wood foam board taking water as foaming agent
CN103756191A (en) * 2014-01-11 2014-04-30 潍坊亚星集团有限公司 Special foaming agent for hard PVC (polyvinyl chloride) low-foaming material and preparation method thereof
CN104277319A (en) * 2014-10-10 2015-01-14 义乌市大胜橡塑制品有限公司 Method for eliminating peculiar smell of EVA (ethylene-vinyl acetate) foamed material
CN105199255A (en) * 2014-06-11 2015-12-30 中国石油化工股份有限公司 Antistatic PVC foamed plastic and preparing method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0543760A (en) * 1991-08-12 1993-02-23 Chisso Corp Rigid vinyl chloride-based resin composition
CN1296031A (en) * 1999-11-12 2001-05-23 中国石油化工集团公司北京化工研究院 Process for preparation polyvinyl-chloride foaming material
CN102558709A (en) * 2011-12-21 2012-07-11 常州大学 Flexible polyvinyl chloride foam material and molding method thereof
CN103205010A (en) * 2013-04-22 2013-07-17 华东理工大学 Preparation method of PVC (polyvinyl chloride) plastic-wood foam board taking water as foaming agent
CN103756191A (en) * 2014-01-11 2014-04-30 潍坊亚星集团有限公司 Special foaming agent for hard PVC (polyvinyl chloride) low-foaming material and preparation method thereof
CN105199255A (en) * 2014-06-11 2015-12-30 中国石油化工股份有限公司 Antistatic PVC foamed plastic and preparing method thereof
CN104277319A (en) * 2014-10-10 2015-01-14 义乌市大胜橡塑制品有限公司 Method for eliminating peculiar smell of EVA (ethylene-vinyl acetate) foamed material

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Application publication date: 20170419