CN111100400A - Flame-retardant PVC wood-plastic profile and preparation method thereof - Google Patents
Flame-retardant PVC wood-plastic profile and preparation method thereof Download PDFInfo
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- CN111100400A CN111100400A CN201911216847.2A CN201911216847A CN111100400A CN 111100400 A CN111100400 A CN 111100400A CN 201911216847 A CN201911216847 A CN 201911216847A CN 111100400 A CN111100400 A CN 111100400A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions 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; Compositions of derivatives of such polymers
- C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention discloses a flame-retardant PVC wood-plastic profile and a preparation method thereof. The flame-retardant PVC wood-plastic profile makes full use of the flame-retardant and smoke-suppression characteristics of various oxides and chlorides in stone, ceramic tiles and artificial stone polishing residues, replaces expensive flame retardants in the prior art, and is prepared into outdoor garden woods, fences, building decorative plates and flame-retardant PVC wood-plastic profiles for doors and windows with good flame-retardant and smoke-suppression performances through the steps of pretreatment, material mixing, extrusion and the like. In the formula, the polishing slag can also replace calcium carbonate as an inorganic filler and be filled in the flame-retardant PVC wood-plastic sectional material in a large amount, so that the production cost can be reduced, the problems that the polishing slag of stone, ceramic tiles and artificial stones is difficult to recycle and the waste landfill causes environmental pollution are solved, and waste is changed into valuable.
Description
Technical Field
The invention relates to the technical field of flame-retardant PVC materials, and mainly relates to a flame-retardant PVC wood-plastic profile and a preparation method thereof.
Background
The polyvinyl chloride PVC resin has good flame retardance and the chlorine content of the polyvinyl chloride PVC resin is up to 56 percent. Because the PVC plastic has good flame retardancy, wear resistance, chemical corrosion resistance and comprehensive mechanical properties, the PVC plastic is a universal material with the most excellent cost performance ratio, and is widely applied to manufacturing pipes, plates and door and window profiles, in particular to the architectural decoration industry with flame retardant requirements. Although PVC is not easy to burn, the PVC material can generate a great deal of black smoke in the burning process and can release HCI and CO2Toxic and harmful gases corrosive to CO and toluene, etc., polluting environment and being human body or instrumentThe device causes secondary harm, and once the device catches fire, dense smoke and toxic gas can be diffused, so that the fire is difficult to fight, and huge losses are brought to lives and properties of people. More and more practice proves that for building decoration materials with flame-retardant requirements, the requirement of flame retardance is insufficient, and low smoke generating property is also needed to reduce the harm of toxic smoke.
Therefore, the prior art has yet to be developed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a flame-retardant PVC wood plastic profile and a preparation method thereof. The flame-retardant PVC wood-plastic section bar is prepared by adding stone, ceramic tiles and artificial stone polishing slag powder with flame-retardant and smoke-suppression properties into a formula through the steps of pretreatment, mixing, extrusion and the like, and is applied to manufacturing outdoor garden woods and fences with good flame-retardant and smoke-suppression properties, building decorative plates and door and window section bars.
The polishing slag is an industrial waste, is a large amount of waste slag generated by a series of procedures such as grinding, polishing and the like in the surface polishing process of stone, ceramic tiles and artificial stones, and has no toxicity. The main components are about 70% of polishing fine powder and about 30% of abrasive powder, and the polishing abrasive powder is mainly composed of about 10% of magnesium oxychloride cement binder and about 20% of Al2O3And SiC, wherein the magnesium oxychloride cement binder mainly comprises materials such as magnesium oxide, magnesium hydroxide, magnesium chloride hexahydrate and the like. PVC burns on flame and can be degraded to release HCI and CO2CO, toluene and other corrosive toxic and harmful gases, and magnesium oxide in the polishing slag reacts with HCI to generate magnesium chloride and water; reacting magnesium hydroxide with HCI to generate magnesium chloride and water; heating magnesium chloride hexahydrate in HCI airflow to react to generate magnesium chloride and water; HCI gas generates hydrochloric acid when meeting water, and aluminum oxide reacts with the hydrochloric acid to generate aluminum chloride and water, so that the polishing abrasive dust is a flame retardant with flame retardant and smoke suppression performances. SiO accounts for 95% of the polishing fine powder2Pulverulent, incombustible and pyrolysis-resistant SiO2The flame-retardant PVC wood-plastic section filled with powder can form a carbonized layer on the surface during combustion, thereby preventingThe entering of heat and oxygen and the escaping of toxic gas enable the fire retardant to play a greater role in the fire retarding mechanism of dehydration dilution and heat absorption and temperature reduction. In addition, the generated carbonized layer covers the surface of the PVC wood-plastic section bar, and the flame resistance of the PVC wood-plastic section bar can also be improved. The polishing slag filled in the PVC wood-plastic section, wherein oxides and chlorides generally react with HCI released when the PVC wood-plastic section is burnt to generate metal chlorides and water, and then a series of reactions occur to further exert the flame retardant and smoke suppression performance.
The flame-retardant PVC wood-plastic profile disclosed by the invention makes full use of the flame-retardant and smoke-suppression characteristics of various oxides and chlorides in stone, ceramic tile and artificial stone polishing residues to replace expensive flame retardants in the prior art to prepare the flame-retardant and smoke-suppression flame-retardant PVC wood-plastic profile, and is applied to manufacturing outdoor garden woods, fences, building decorative plates and door and window profiles with good flame-retardant and smoke-suppression performances. In the formula, the polishing slag can also replace calcium carbonate as an inorganic filler and be filled in a large amount of flame-retardant PVC wood-plastic profiles, so that the production cost can be reduced, and outdoor garden woods, fences, building decorative plates and door and window profiles with better flame retardance and smoke suppression performance can be manufactured. Moreover, the problems that the polishing residues of stone materials, ceramic tiles and artificial stones are difficult to recycle and the waste landfill causes environmental pollution are solved, and waste is changed into valuable.
The technical scheme of the invention is as follows:
the preparation method of the flame-retardant PVC wood-plastic profile is characterized in that the flame-retardant PVC wood-plastic profile is prepared by pretreatment, mixing and extrusion.
The flame-retardant PVC wood-plastic section bar comprises the following raw materials in parts by mass:
the PVC resin is one or more of PVC resins with the polymerization degree of 700-1000.
Wherein the polishing slag is stone, ceramic tile or artificial stone polishing slag.
Wherein, the lubricant is one or a plurality of compounds of hydrocarbon, fatty acid amide, alcohol, ester and metallic soap lubricant.
Wherein the heat stabilizer is one or a plurality of basic lead salt stabilizers, organic tin stabilizers, metal soap stabilizers, epoxy compounds, phosphite esters and polyhydric alcohols.
Wherein, the processing modifier is one or more of AS, MBS, ACR and styrene rheology modifier.
Wherein, the impact resistance agent is one or a plurality of compounds of ABS, MBS, CPE, EVA and ACR.
Wherein the processing aid is one or more of an antioxidant, an antistatic agent and a foaming agent.
Preferably, the antioxidant is a phenol, comprising: monophenol, bisphenol, triphenol, polyphenol, hydroquinone, sulfurized bisphenol; amines including naphthylamine, diphenylamine, p-phenylenediamine, quinoline derivatives; one or more of phosphites are compounded.
Preferably, the antistatic agent is one or more of stearylammonium chloride, N-bis-hydroxyethyl-N-methylammonium methyl sulfate, stearylammonium propyl-B-hydroxyethyl-dimethylammonium nitrate and stearylammonium propyl-B-hydroxyethyl-dimethylammonium dihydrogen phosphate.
Preferably, the foaming agent is one or both of an AC foaming agent or an AC-K foaming agent.
The invention also discloses a preparation method of the flame-retardant PVC wood-plastic section, which further comprises the following steps:
1. pretreatment:
the wood powder with the particle size of 60 meshes is added into a dryer to be baked at the temperature of 180-240 ℃, and the moisture is dried and the impurities are evaporated. And adding the baked wood powder into a stirrer, adding a coupling agent accounting for 0.5-5% of the total mass of the wood powder at the temperature of 80-110 ℃, stirring for 5-20 minutes, and performing surface activation treatment.
Preferably, the coupling agent of the present invention is one or more of a silane coupling agent, a titanate coupling agent, and an aluminate coupling agent.
2. Mixing materials:
weighing the raw materials for forming the flame-retardant PVC wood-plastic section according to the mass fraction of the formula for later use. Putting PVC resin powder into a high-speed mixer, and stirring at a high speed for 5-10 minutes to dry water; adding the rest raw materials, and stirring at a low speed for 3-5 minutes; and (4) putting the discharged materials into a cold mixer, stirring for 5-20 minutes, cooling and discharging to obtain the flame-retardant PVC wood-plastic profile mixture.
3. Extruding:
putting the mixture into an extruder, and extruding the flame-retardant PVC wood-plastic profile through a head die of the extruder, wherein the temperature of each area of the extruder is as follows: zone 1/120-140 deg.C, zone 2/140-160 deg.C, zone 3/160-180 deg.C, zone 4/160-180 deg.C, and head 170-190 deg.C.
The invention has the beneficial effects that:
the invention discloses a flame-retardant PVC wood-plastic profile and a preparation method thereof, wherein stone, ceramic tile and artificial stone polishing slag powder with flame-retardant and smoke-suppression properties are added into formula raw materials of the flame-retardant PVC wood-plastic profile, and the flame-retardant PVC wood-plastic profile with flame-retardant and smoke-suppression properties, such as outdoor garden woods, fences, building decorative plates and doors and windows, is prepared through the steps of pretreatment, mixing, extrusion and the like. In the formula of the flame-retardant PVC wood-plastic section, the flame-retardant and smoke-suppression characteristics of various oxides and chlorides in stone, ceramic tiles and artificial stone polishing residues are fully utilized to replace expensive flame retardants in the prior art to prepare the flame-retardant and smoke-suppression flame-retardant PVC wood-plastic section. In addition, the polishing slag can replace calcium carbonate as an inorganic filler and be filled in the flame-retardant PVC wood-plastic profile in a large amount, so that the production cost can be reduced, the problems that the polishing slag of stone, ceramic tiles and artificial stones is difficult to recycle and the waste landfill causes environmental pollution are solved, and waste is changed into valuable.
Compared with the prior art, the invention has the following innovation points:
the polishing slag is an industrial waste, is a large amount of waste slag generated by a series of procedures such as grinding, polishing and the like in the surface polishing process of stone, ceramic tiles and artificial stones, and has no toxicity. Mainly comprisingThe components are about 70 percent of polishing fine powder and about 30 percent of abrasive dust. SiO accounts for 95% of the polishing fine powder2Powder of SiO2The flame-retardant PVC wood-plastic section filled with powder can form a carbonization layer on the surface during combustion, so that the heat and oxygen are prevented from entering and toxic gas is prevented from escaping, and the flame-retardant mechanism of dehydration dilution and heat absorption cooling of the flame retardant can play a greater role. The polishing abrasive dust is a flame retardant with flame retardant and smoke suppression properties. The oxides and chlorides in the stone, ceramic tile and artificial stone polishing slag filled in the flame-retardant PVC wood-plastic section generally react with HCI released when the flame-retardant PVC wood-plastic section is combusted to generate metal chlorides and water, and then a series of reactions occur to further exert the flame-retardant and smoke-suppression performances of the flame-retardant PVC wood-plastic section.
However, before the technical disclosure of the invention, the characteristics of flame retardance and smoke suppression of stone, ceramic tiles and artificial stone polishing residues are not found in the technical field, and the characteristics are utilized to prepare the flame-retardant PVC wood-plastic section bar which is applied to manufacturing outdoor garden woods, fences, building decorative plates and door and window sections with good flame retardance and smoke suppression performances.
The specific implementation mode is as follows:
the invention provides a flame-retardant PVC wood-plastic section and a preparation method thereof, and the invention is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and more clear. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
1. pretreatment:
the wood powder with the particle size of 60 meshes is added into a dryer to be heated for 15 minutes within the temperature range of 200 ℃ for baking treatment, and the moisture is dried and the impurities are evaporated. Adding the baked wood powder into a high-speed mixer, stirring and heating to 90 ℃, adding a silane coupling agent accounting for 2 percent of the total weight of the polishing slag, mixing the silane coupling agent and absolute ethyl alcohol according to the ratio of 1: 1, spraying the mixture on the surface of the polishing slag, and stirring and activating for 10 minutes at a high speed; and (4) putting the discharged materials into a cold mixer, stirring for 8 minutes, cooling and discharging to obtain the wood powder with the activated surface for later use.
2. Mixing materials:
weighing the raw material formulas for forming the flame-retardant PVC wood-plastic section according to the following mass fractions for later use.
Putting PVC resin powder into a high-speed mixer, stirring at a high speed for 7 minutes, and drying the water; then adding the rest raw materials, and stirring at high speed for 3 minutes; and (4) putting the discharged materials into a cold mixer, stirring for 10 minutes, cooling and discharging to obtain the flame-retardant PVC wood-plastic profile mixture.
3. Extruding:
putting the mixture into a double-screw extruder, and extruding the mixture into a flame-retardant PVC door and window wood-plastic profile through a head die of the extruder, wherein the temperature of each zone of the extruder is as follows: zone 1/130 ℃, zone 2/160 ℃, zone 3/170 ℃, zone 4/175 ℃, head/180 ℃.
The prepared flame-retardant PVC door and window wood-plastic section is subjected to flame retardant property test, and the detection result is as follows: measuring the oxygen isolation index 34 (standard requirement 27), the longest flaming combustion time of a single sample is 5s (standard requirement 10s), and the plastic flame retardance is V-0 grade; the smoke density grade (SDR) is less than or equal to 75, and reaches the first-grade flame-retardant plastic standard of GB20286-2006 flame-retardant products and components in public places and flame performance requirements and marks.
Embodiment two:
1. pretreatment:
adding the wood powder with the particle size of 60 meshes into a dryer, heating for 10 minutes at the temperature of 210 ℃ for baking treatment, drying water and evaporating impurities. Adding the baked wood powder into a high-speed mixer, stirring and heating to 100 ℃, adding a titanate coupling agent accounting for 1.5 percent of the total mass of the wood powder, mixing the titanate coupling agent and chlorinated paraffin according to the proportion of 1: 1, spraying the mixture on the surface of the polishing residue, and stirring and activating for 8 minutes at a high speed; and (4) putting the discharged materials into a cold mixer, stirring for 10 minutes, cooling, and discharging to obtain activated wood powder for later use.
2. Mixing materials:
weighing the raw material formulas for forming the flame-retardant PVC wood-plastic section according to the following mass fractions for later use.
Putting PVC resin powder into a high-speed mixer, stirring at a high speed for 8 minutes, and drying the water; then adding the rest raw materials, and stirring at high speed for 3 minutes; and (4) putting the discharged materials into a cold mixer, stirring for 10 minutes, cooling and discharging to obtain the flame-retardant PVC wood-plastic profile mixture.
3. Extruding:
putting the mixture into a single-screw extruder, extruding the wood-plastic profile of the outdoor garden fence through a head die of the extruder, wherein the temperature of each area of the extruder is as follows: zone 1/145 ℃, zone 2/155 ℃, zone 3/165 ℃, head/175 ℃.
The prepared outdoor garden fence wood-plastic section bar is subjected to flame retardant property test, and the detection result is as follows: an alcohol lamp combustion test is carried out, the oxygen isolation index is 29 (standard requirement 27), the longest flaming combustion time of a single sample is 6s (standard requirement 10s), and the plastic flame retardance is V-0 grade; the smoke density grade (SDR) is less than or equal to 75, and reaches the first-grade flame-retardant plastic standard of GB20286-2006 flame-retardant products and components in public places and flame performance requirements and marks.
The third embodiment is as follows:
1. pretreatment:
the wood powder with the particle size of 60 meshes is added into a dryer to be heated for 10 minutes within the temperature range of 195 ℃ for baking treatment, and the moisture is dried and the impurities are evaporated. Adding the baked wood powder into a high-speed mixer, stirring and heating to 100 ℃, adding a titanate coupling agent accounting for 1.5 percent of the total mass of the wood powder, mixing the titanate coupling agent and chlorinated paraffin according to the proportion of 1: 1, spraying the mixture on the surface of the polishing residue, and stirring and activating for 8 minutes at a high speed; discharging, stirring for 10 min, cooling, discharging to obtain activated wood powder,
2. mixing materials:
weighing the raw material formulas for forming the flame-retardant PVC wood-plastic section according to the following mass fractions for later use.
Putting PVC resin powder into a high-speed mixer, stirring at a high speed for 7 minutes, and drying the water; then adding the rest raw materials, and stirring at low speed for 3 minutes; and (4) putting the discharged materials into a cold mixer, stirring for 10 minutes, cooling and discharging to obtain the flame-retardant PVC wood-plastic profile mixture.
2. Extruding:
putting the mixture into a single-screw extruder, extruding the mixture into garden wood profiles with the specification of 100x50mm through a head die of the extruder, wherein the temperature of each area of the extruder is as follows: zone 1/135 ℃, zone 2/155 ℃, zone 3/165 ℃, head/175 ℃.
The prepared artificial stone polishing slag modified PVC flame-retardant section aggregate is processed by an extruder to obtain a flame-retardant low-smoke hard PVC threading pipe. Measuring the oxygen isolation index 32 (standard requirement 27), the longest flaming combustion time of a single sample is 3s (standard requirement 10s), and the plastic flame retardance is V-0 grade; the smoke density grade (SDR) is less than or equal to 75, and reaches the first-grade flame-retardant plastic standard of GB20286-2006 flame-retardant products and components in public places and flame performance requirements and marks.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (6)
1. A flame-retardant PVC wood-plastic section bar and a preparation method thereof are characterized in that stone, ceramic tile and artificial stone polishing slag with flame-retardant and smoke-inhibiting properties are added in a formula; the outdoor garden wood, fences, building decorative plates, square timber and door and window flame-retardant PVC wood-plastic profiles are prepared through the steps of pretreatment, material mixing and extrusion.
2. The flame-retardant PVC wood-plastic profile according to claim 1, wherein the formula comprises the following raw materials in parts by mass:
3. the flame-retardant PVC wood-plastic profile according to claim 2, wherein in the formulation components, the PVC resin is one or more of PVC resins with the polymerization degree of 700-1000; the polishing slag is stone, ceramic tile or artificial stone polishing slag; the lubricant is one or a plurality of compounds of hydrocarbon, fatty acid amide, alcohol, ester and metal soap lubricant; the heat stabilizer is one or more of basic lead salt stabilizer, organic tin stabilizer, metal soap stabilizer, epoxy compound, phosphite ester and polyhydric alcohol; the processing modifier is one or more of AS, MBS, ACR and styrene rheology modifier; the impact resistance agent is one or more of ABS, MBS, CPE, EVA and ACR; the processing aid is one or more of an antioxidant, an antistatic agent and a foaming agent.
4. The flame-retardant PVC wood-plastic profile according to claim 2 or 3, wherein in the processing aid, the antioxidant is a phenol compound, and comprises: monophenol, bisphenol, triphenol, polyphenol, hydroquinone, sulfurized bisphenol; amines including naphthylamine, diphenylamine, p-phenylenediamine, quinoline derivatives; one or more of phosphites are compounded; the antistatic agent is one or more of stearylammonium chloride, N-bis-hydroxyethyl-N-methylammonium methyl sulfate, stearylammonium propyl-B-hydroxyethyl-dimethylammonium nitrate and stearylammonium propyl-B-hydroxyethyl-dimethylammonium dihydrogen phosphate; the foaming agent is one or two of an AC foaming agent or an AC-K foaming agent.
5. The method for preparing the flame-retardant PVC wood-plastic profile according to claims 1 to 4, which comprises the following steps:
step one, pretreatment:
the wood powder with the particle size of 60 meshes is added into a dryer to be baked at the temperature of 180-240 ℃, and the moisture is dried and the impurities are evaporated. And adding the baked wood powder into a stirrer, adding a coupling agent accounting for 0.5-5% of the total mass of the wood powder at the temperature of 80-110 ℃, stirring for 5-20 minutes, and performing surface activation treatment.
Step two, mixing materials:
weighing the raw materials for forming the flame-retardant PVC wood-plastic section according to the mass fraction of the formula for later use. Putting PVC resin powder into a high-speed mixer, and stirring at a high speed for 5-10 minutes to dry water; adding the rest raw materials, and stirring at a low speed for 3-5 minutes; and (4) putting the discharged materials into a cold mixer, stirring for 5-20 minutes, cooling and discharging to obtain the flame-retardant PVC wood-plastic profile mixture.
Step three, extrusion molding:
putting the mixture into an extruder, and extruding the flame-retardant PVC wood-plastic profile through a head die of the extruder, wherein the temperature of each area of the extruder is as follows: zone 1/120-140 deg.C, zone 2/140-160 deg.C, zone 3/160-180 deg.C, zone 4/160-180 deg.C, and head 170-190 deg.C.
6. The method and the steps for preparing the flame-retardant PVC wood-plastic profile according to claim 5, wherein the coupling agent is one or more of silane coupling agent, titanate coupling agent and aluminate coupling agent.
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| CN201911216847.2A CN111100400A (en) | 2019-11-26 | 2019-11-26 | Flame-retardant PVC wood-plastic profile and preparation method thereof |
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| CN201911216847.2A CN111100400A (en) | 2019-11-26 | 2019-11-26 | Flame-retardant PVC wood-plastic profile and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113045841A (en) * | 2021-03-23 | 2021-06-29 | 浙江天博新材料有限公司 | Flame-retardant and heat-insulating PVC wood-plastic profile |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113045841A (en) * | 2021-03-23 | 2021-06-29 | 浙江天博新材料有限公司 | Flame-retardant and heat-insulating PVC wood-plastic profile |
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