CN113896934A - PVC (polyvinyl chloride) mixture for producing polyvinyl chloride foamed wood plastic - Google Patents
PVC (polyvinyl chloride) mixture for producing polyvinyl chloride foamed wood plastic Download PDFInfo
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- CN113896934A CN113896934A CN202111191998.4A CN202111191998A CN113896934A CN 113896934 A CN113896934 A CN 113896934A CN 202111191998 A CN202111191998 A CN 202111191998A CN 113896934 A CN113896934 A CN 113896934A
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- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 74
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 74
- 239000002023 wood Substances 0.000 title claims abstract description 53
- 229920003023 plastic Polymers 0.000 title claims abstract description 43
- 239000004033 plastic Substances 0.000 title claims abstract description 43
- 239000000203 mixture Substances 0.000 title claims abstract description 36
- 239000000843 powder Substances 0.000 claims abstract description 102
- 239000000945 filler Substances 0.000 claims abstract description 66
- 239000000835 fiber Substances 0.000 claims abstract description 40
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000011347 resin Substances 0.000 claims abstract description 31
- 229920005989 resin Polymers 0.000 claims abstract description 31
- 239000004088 foaming agent Substances 0.000 claims abstract description 23
- 238000005187 foaming Methods 0.000 claims abstract description 19
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 17
- 241000209094 Oryza Species 0.000 claims abstract description 16
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 16
- 235000009566 rice Nutrition 0.000 claims abstract description 16
- 239000004744 fabric Substances 0.000 claims abstract description 15
- 239000010903 husk Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 239000002699 waste material Substances 0.000 claims abstract description 15
- 239000000314 lubricant Substances 0.000 claims abstract description 13
- 239000003381 stabilizer Substances 0.000 claims abstract description 10
- 239000004113 Sepiolite Substances 0.000 claims abstract description 8
- 229910052599 brucite Inorganic materials 0.000 claims abstract description 8
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 8
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 8
- 239000000047 product Substances 0.000 claims description 16
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000001993 wax Substances 0.000 claims description 6
- 241000219000 Populus Species 0.000 claims description 4
- 239000006084 composite stabilizer Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- 150000002910 rare earth metals Chemical group 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 239000012765 fibrous filler Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 244000082204 Phyllostachys viridis Species 0.000 claims 1
- 239000000654 additive Substances 0.000 abstract description 10
- 230000000996 additive effect Effects 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 238000006467 substitution reaction Methods 0.000 abstract description 2
- 239000003607 modifier Substances 0.000 abstract 1
- 235000013312 flour Nutrition 0.000 description 4
- 229920002101 Chitin Polymers 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229920001587 Wood-plastic composite Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 239000000022 bacteriostatic agent Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000011155 wood-plastic composite Substances 0.000 description 1
Classifications
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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
-
- 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
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- 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
-
- 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
- C08J9/08—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 carbon dioxide
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/20—Ternary blends of expanding agents
-
- 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
- C08J2327/00—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
- C08J2327/02—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
- C08J2327/04—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
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08J2400/00—Characterised by the use of unspecified polymers
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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
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- Chemical & Material Sciences (AREA)
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- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a PVC mixture for producing polyvinyl chloride foamed wood plastic, which comprises the following components: PVC resin powder; the fiber filler consists of fast-growing wood powder, rice husk powder and waste fabrics; the temperature-resistant filler is formed by mixing sepiolite powder and brucite powder; shell powder; titanium dioxide; a foaming agent; a foaming modifier; a lubricant; a stabilizer. The PVC mixture for producing the polyvinyl chloride foamed wood plastic reduces the proportion of fast-growing wood powder in the limiting filler, uses the rice husk powder and the waste fabric for substitution, improves the resource utilization rate, reduces the economic cost, promotes the product quality, utilizes the environment-friendly additive to replace the traditional chemical additive, and has great significance for protecting the ecological environment.
Description
Technical Field
The invention relates to the technical field related to wood-plastic production, in particular to a PVC mixture for producing polyvinyl chloride foamed wood-plastic.
Background
With the continuous enhancement of people's environmental awareness and the increasing scarcity of forest resources, wood-plastic composite materials become a class of novel composite materials which are briskly developed in recent years, and wood-plastic is a wood material formed by mixing resin and wood powder, and is widely applied to industries such as building materials, furniture, packaging and the like.
Although wood flour contains agriculture and forestry byproducts such as wood powder, straw powder, rice hull powder and the like in a broad sense, fiber structures of different parts of different plants or the same plant have great difference, so that the wood flour in the actual production process is usually fast-growing poplar wood flour or fast-growing fir wood flour, the problem of shortage of wood resources is still not easily relieved, in addition, in order to improve the service performance of the wood-plastic material, when a PVC (polyvinyl chloride) mixture of a wood-plastic product is prepared, various chemical additives such as a coupling agent, a flame retardant, an antibacterial agent and the like need to be added, certain harm is generated to the ecological environment, and meanwhile, the influence is generated on the quality of the wood-plastic product.
Disclosure of Invention
The invention provides a PVC mixture for producing polyvinyl chloride foamed wood plastic in order to make up for market vacancy.
The invention aims to provide a PVC mixture for producing polyvinyl chloride foamed wood plastic, which aims to solve the problem that wood powder is not beneficial to relieving shortage of wood resources in the background technology, and the problem that the quality of wood plastic products is affected by using various chemical additives while certain harm is generated to the ecological environment.
In order to achieve the purpose, the invention provides the following technical scheme: a PVC mixture for producing polyvinyl chloride foamed wood plastic comprises the following components:
PVC resin powder: 50-70 parts by weight;
fiber filler: 40-60 parts by weight of fiber filler, wherein the fiber filler consists of fast-growing wood powder, rice husk powder and waste fabric;
temperature-resistant filler: 13-20 parts by weight of temperature-resistant filler, wherein the temperature-resistant filler is formed by mixing sepiolite powder and brucite powder;
shell powder: 6-10 parts by weight;
titanium dioxide: 1-2.5 parts by weight;
foaming agent: 0.5-2 parts by weight;
foaming regulator: 2.5-7 parts by weight;
lubricant: 2-3 parts by weight;
a stabilizer: 2-6 parts by weight.
Further, the PVC resin powder is polyvinyl chloride resin, the polymerization degree is 700-1000, and the PVC resin powder is SG-7 type resin powder, SG-8 type resin powder, and a mixture of SG-7 type resin powder and SG-8 type resin powder.
Further, the fiber filler comprises three components of fast-growing wood powder, rice husk powder and waste fabric, wherein the fast-growing wood powder, the rice husk powder and the waste fabric respectively account for 55%, 42% and 3%, and the fast-growing wood powder is one of poplar, fir or bamboo.
Further, the fiber filler is soaked in a low-concentration sodium hydroxide solution and is subjected to microwave drying treatment, the water content of the fiber filler is lower than 1%, and the particle size of the fiber filler is 90-110 meshes.
Further, the ratio of the sepiolite powder to the brucite powder in the temperature-resistant filler is 1: 1, and the mass ratio of the temperature-resistant filler to the fibrous filler is 1: 3.
Furthermore, the main component of the shell powder is calcium carbonate, the proportion of the calcium carbonate is 95%, the granularity of the shell powder is 500-600 meshes, and the main component of the titanium dioxide is titanium dioxide.
Further, the foaming agent is a compound foaming agent which comprises an AC foaming agent, an NC foaming agent and a DC foaming agent in a ratio of 0.5: 1, the foaming regulator is used for improving the foaming quality and enhancing the strength of the mixture, and the foaming regulator is a polymer of methyl methacrylate, ethyl acrylate, butyl acrylate and styrene.
Furthermore, the lubricant is used for improving the fluidity of the mixture and improving the surface smoothness of the wood-plastic product, the lubricant is one of polyester wax, stearic acid, polyethylene wax or paraffin, and the stabilizer is a rare earth composite stabilizer.
A method for producing PVC mixture for PVC foaming wood plastic comprises the following steps:
s1, performing alkaline treatment on each component of the fiber filler, feeding each treated raw material into a microwave dryer to reduce the water content of the raw material to below 1%, and mixing the raw materials according to the proportion to obtain the fiber filler;
s2, feeding the crushed heat-resistant filler component and the shell powder into a microwave dryer to reduce the water content of the heat-resistant filler component and the shell powder to below 1%, and mixing according to the proportion to obtain a mixture of the heat-resistant filler and the shell powder;
s3, adding the fiber filler, the mixture, the PVC resin powder, the titanium dioxide, the foaming agent, the foaming regulator lubricant and the stabilizer into a mixer, stirring for 15-20 minutes at a speed of 2880-3500r/min, generating friction among the materials, stirring at a speed of 50-60r/min when the temperature reaches 110-130 ℃, and stopping stirring when the temperature of the materials in the mixer reaches 40-45 ℃ to obtain a premix;
s4, adding the premix into a barrel of an extruder, rotating a screw in the extruder at a speed of 5-30r/min for mixing, and heating the premix in the barrel of the extruder to obtain a PVC mixture for producing the polyvinyl chloride foamed wood plastic at a molten state at the temperature of 155-.
Compared with the prior art, the invention has the beneficial effects that: the PVC mixture for producing the polyvinyl chloride foamed wood plastic is reasonable in structural arrangement, the proportion of fast-growing wood powder in the limiting filler is reduced, the rice husk powder and the waste fabric are used for replacing, the resource utilization rate is improved, the economic cost is reduced, the product quality is improved, the environment-friendly additive is used for replacing the traditional chemical additive, and the PVC mixture has great significance for protecting the ecological environment;
1. the fiber filler formed by mixing the fast-growing wood powder, the rice husk powder and the waste fabric is used, so that the demand on wood resources is reduced, and the fiber structure is improved, so that the quality of the wood-plastic product is improved, and a new way for recycling resources is improved;
2. the heat resistance of the wood-plastic product is improved by utilizing the temperature-resistant filler, so that the applicable scene of wood-plastic is expanded, and the service life of the wood-plastic product is prolonged;
3. the shell powder is used for replacing a flame retardant, is an environment-friendly biological additive and avoids harm to the environment, and consists of 95% of calcium carbonate and a small amount of chitin, and the chitin has an inhibiting effect on bacterial breeding;
4. the titanium dioxide is used as the toner, so that the wood-plastic product has uniform color and slow decolorization, and the titanium dioxide in the titanium dioxide is used as the catalyst to sterilize in sunlight.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: the invention provides a technical scheme that: a PVC mixture for producing polyvinyl chloride foamed wood plastic comprises the following components:
PVC resin powder: 50-70 parts by weight;
fiber filler: 40-60 parts by weight of fiber filler, wherein the fiber filler consists of fast-growing wood powder, rice husk powder and waste fabric;
temperature-resistant filler: 13-20 parts by weight of temperature-resistant filler, wherein the temperature-resistant filler is formed by mixing sepiolite powder and brucite powder;
shell powder: 6-10 parts by weight;
titanium dioxide: 1-2.5 parts by weight;
foaming agent: 0.5-2 parts by weight;
foaming regulator: 2.5-7 parts by weight;
lubricant: 2-3 parts by weight;
a stabilizer: 2-6 parts by weight.
The formula of the raw materials is simple, the use of chemical additives is reduced, the mixture for wood-plastic production is more stable, and the reject ratio is reduced.
The second embodiment is as follows: the present embodiment is further defined by the first embodiment, wherein the PVC resin powder is PVC resin having a polymerization degree of 700 to 1000, and the PVC resin powder is SG-7 type resin powder, SG-8 type resin powder, or a mixture of SG-7 type resin powder and SG-8 type resin powder.
The third concrete implementation mode: the embodiment is further limited by the first specific embodiment, the fiber filler comprises three components of fast-growing wood powder, rice husk powder and waste fabric, the fast-growing wood powder, the rice husk powder and the waste fabric respectively account for 55%, 42% and 3%, the fast-growing wood powder is one of poplar, fir or bamboo, the using amount of the fast-growing wood powder is reduced, the rice husk powder is used for replacing part of the fast-growing wood powder, fibers in the rice husk powder are combined with PVC resin in the form of 'roundabout reef', the combination effect is tighter, the impact strength of the wood-plastic product is improved, meanwhile, a small amount of waste fabric is added to improve the mechanical property of the product, and a new way for recycling the waste fabric is provided.
The fourth concrete implementation mode: the third specific embodiment is further limited in that the fiber filler is soaked in a low-concentration sodium hydroxide solution, the fiber filler is subjected to microwave drying treatment, the water content of the fiber filler is lower than 1%, the particle size of the fiber filler is 90-110 meshes, the dispersibility of the fiber filler is improved through alkaline treatment, the water content of the fiber filler is reduced through microwave drying, the fiber filler is modified, and the binding property of the fiber filler and the PVC resin powder is enhanced.
The fifth concrete implementation mode: the embodiment is further limited by the first specific embodiment, the ratio of the sepiolite powder to the brucite powder in the temperature-resistant filler is 1: 1, the mass ratio of the temperature-resistant filler to the fibrous filler is 1: 3, and the heat-resistant filler formed by the sepiolite powder and the brucite powder has mineral fibers with high length-diameter ratio and has a remarkable reinforcing effect on the wood-plastic material.
The sixth specific implementation mode: the embodiment is further limited by the first specific embodiment, the main component of the shell powder is calcium carbonate, the proportion of the calcium carbonate is 95%, the granularity of the shell powder is 500-600 meshes, the main component of the titanium dioxide is titanium dioxide, the shell powder is a biological additive, the use of chemical additives is reduced, the environment is protected, chitin in the shell powder has a good antibacterial effect, the bacterial breeding is reduced, and the additional increase of a bacteriostatic agent is avoided by matching with the antibacterial effect of the titanium dioxide under sunlight.
The seventh embodiment: the embodiment is further limited by the first specific embodiment, the foaming agent is a compound foaming agent, the foaming agent comprises an AC foaming agent, an NC foaming agent and a DC foaming agent, the ratio is 0.5: 1, the foaming regulator is used for improving the foaming quality and enhancing the strength of the mixture, the foaming regulator is a polymer of methyl methacrylate, ethyl acrylate, butyl acrylate and styrene, and the foaming regulator can promote PVC melting and enable the product structure made of the PVC mixture to be more compact.
The specific implementation mode is eight: the embodiment is further limited by the first specific embodiment, the lubricant is used for improving the fluidity of the mixture and improving the surface smoothness of the wood-plastic product, the lubricant is one of polyester wax, stearic acid, polyethylene wax or paraffin, the stabilizer is a rare earth composite stabilizer, and the rare earth composite stabilizer is non-toxic and harmless and reduces the potential safety hazard of the use of the wood-plastic product.
The specific implementation method nine: a method for producing PVC mixture for PVC foaming wood plastic comprises the following steps:
s1, performing alkaline treatment on each component of the fiber filler, feeding each treated raw material into a microwave dryer to reduce the water content of the raw material to below 1%, and mixing the raw materials according to the proportion to obtain the fiber filler;
s2, feeding the crushed heat-resistant filler component and the shell powder into a microwave dryer to reduce the water content of the heat-resistant filler component and the shell powder to below 1%, and mixing according to the proportion to obtain a mixture of the heat-resistant filler and the shell powder;
s3, adding the fiber filler, the mixture, the PVC resin powder, the titanium dioxide, the foaming agent, the foaming regulator lubricant and the stabilizer into a mixer, stirring for 15-20 minutes at the speed of 2880-3500r/min, when the temperature reaches 110-130 ℃, then stirring at the speed of 50-60r/min, and when the temperature of the materials in the mixer reaches 40-45 ℃, stopping stirring to obtain the premix;
s4, adding the premix into a barrel of an extruder, rotating a screw in the extruder at a speed of 5-30r/min for mixing, and heating the premix in the barrel of the extruder to obtain a PVC mixture for producing the polyvinyl chloride foamed wood plastic at a molten state at the temperature of 155-.
When the PVC mixture is used for producing wood-plastic products, cooling equipment is arranged at the extrusion position to realize cooling and skinning.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The PVC mixture for producing the polyvinyl chloride foamed wood plastic is characterized by comprising the following components:
PVC resin powder: 50-70 parts by weight;
fiber filler: 40-60 parts by weight of fiber filler, wherein the fiber filler consists of fast-growing wood powder, rice husk powder and waste fabric;
temperature-resistant filler: 13-20 parts by weight of temperature-resistant filler, wherein the temperature-resistant filler is formed by mixing sepiolite powder and brucite powder;
shell powder: 6-10 parts by weight;
titanium dioxide: 1-2.5 parts by weight;
foaming agent: 0.5-2 parts by weight;
foaming regulator: 2.5-7 parts by weight;
lubricant: 2-3 parts by weight;
a stabilizer: 2-6 parts by weight.
2. The PVC compound for producing the polyvinyl chloride foamed wood plastic according to the claim 1 is characterized in that: the PVC resin powder is polyvinyl chloride resin, the polymerization degree is 700-1000, and the PVC resin powder is SG-7 type resin powder, SG-8 type resin powder, and a mixture of SG-7 type resin powder and SG-8 type resin powder.
3. The PVC compound for producing the polyvinyl chloride foamed wood plastic according to the claim 1 is characterized in that: the fiber filler comprises three components of fast-growing wood powder, rice husk powder and waste fabric, wherein the fast-growing wood powder, the rice husk powder and the waste fabric respectively account for 55%, 42% and 3%, and the fast-growing wood powder is one of poplar, fir or bamboo.
4. The PVC compound for producing the polyvinyl chloride foamed wood plastic according to the claim 3 is characterized in that: the fiber filler is soaked in a low-concentration sodium hydroxide solution and is subjected to microwave drying treatment, the water content of the fiber filler is lower than 1%, and the particle size of the fiber filler is 90-110 meshes.
5. The PVC compound for producing the polyvinyl chloride foamed wood plastic according to the claim 1 is characterized in that: the proportion of the sepiolite powder and the brucite powder in the temperature-resistant filler is 1: 1, and the mass ratio of the temperature-resistant filler to the fibrous filler is 1: 3.
6. The PVC compound for producing the polyvinyl chloride foamed wood plastic according to the claim 1 is characterized in that: the shell powder comprises the main component of calcium carbonate, the proportion of calcium carbonate is 95%, the granularity of the shell powder is 500-600 meshes, and the main component of titanium dioxide is titanium dioxide.
7. The PVC compound for producing the polyvinyl chloride foamed wood plastic according to the claim 1 is characterized in that: the foaming agent is a compound foaming agent which comprises an AC foaming agent, an NC foaming agent and a DC foaming agent in a ratio of 0.5: 1, the foaming regulator is used for improving the foaming quality and enhancing the strength of a mixture, and the foaming regulator is a polymer of methyl methacrylate, ethyl acrylate, butyl acrylate and styrene.
8. The PVC compound for producing the polyvinyl chloride foamed wood plastic according to the claim 1 is characterized in that: the lubricant is used for improving the fluidity of the mixture and improving the surface smoothness of the wood-plastic product, the lubricant is one of polyester wax, stearic acid, polyethylene wax or paraffin, and the stabilizer is a rare earth composite stabilizer.
9. The method for preparing the PVC compound for the production of polyvinyl chloride foamed wood plastic according to claim 1, which is characterized by comprising the following steps:
s1, performing alkaline treatment on each component of the fiber filler, feeding each treated raw material into a microwave dryer to reduce the water content of the raw material to below 1%, and mixing the raw materials according to the proportion to obtain the fiber filler;
s2, feeding the crushed heat-resistant filler component and the shell powder into a microwave dryer to reduce the water content of the heat-resistant filler component and the shell powder to below 1%, and mixing according to the proportion to obtain a mixture of the heat-resistant filler and the shell powder;
s3, adding the fiber filler, the mixture, the PVC resin powder, the titanium dioxide, the foaming agent, the foaming regulator lubricant and the stabilizer into a mixer, stirring for 15-20 minutes at the speed of 2880-3500r/min, when the temperature reaches 110-130 ℃, then stirring at the speed of 50-60r/min, and when the temperature of the materials in the mixer reaches 40-45 ℃, stopping stirring to obtain the premix;
s4, adding the premix into a barrel of an extruder, rotating a screw in the extruder at a speed of 5-30r/min for mixing, and heating the premix in the barrel of the extruder to obtain a PVC mixture for producing the polyvinyl chloride foamed wood plastic at a molten state at the temperature of 155-.
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