CN104650499A - Preparation method of PVC modified sheet - Google Patents
Preparation method of PVC modified sheet Download PDFInfo
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- CN104650499A CN104650499A CN201410831601.7A CN201410831601A CN104650499A CN 104650499 A CN104650499 A CN 104650499A CN 201410831601 A CN201410831601 A CN 201410831601A CN 104650499 A CN104650499 A CN 104650499A
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92209—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
-
- 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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention discloses a preparation method of a PVC modified sheet and aims at increasing the toughness, the strength and the stretchability of the PVC sheet and greatly improving the weather fastness of the sheet. The PVC modified sheet is prepared from the following raw materials in parts by weight: 110 parts of PVC powder, 5 parts of a plasticizer, 1 part of an inner lubricant, 0.6 part of an outer lubricant, 5 part of a flexibilizer, 2 parts of processing aid, 3 parts of a stabilizer, 0.5 part of pigment and 7 parts of an enhancer. The produced PVC modified sheet has the advantages of better mechanical properties, light weight, easy molding, simple process, low cost and the like.
Description
Technical field
The present invention relates to a kind of macromolecule modified material, more specifically, particularly relate to a kind of preparation method of weather-proof PVC sheet product.
Background technology
Polyvinyl chloride (PVC) RESINS (PVC) realizes one of industrialization, resins for universal use that output is larger the earliest, conclusive critical role is occupied in material engineering, polyvinyl chloride whole world annual production is only second to poly plastic raw materials, has been widely used in the every field in productive life.PVC has fire-retardant, corrosion-resistant, insulation, the premium properties such as wear-resistant, and cheap, raw material sources is extensively a kind of important thermoplastics.
Wherein PVC sheet is a staple product in PVC product, it has good mechanical property and the transparency, be widely used at medicine, food, packaging field, not only meet the requirement of goods mechanics, the aspect of performance such as fire-retardant, and add the attractive in appearance of goods.But because the small molecules such as softening agent, lubricant processing aid in the chemical structure characteristic of PVC self and goods is easily to surface transport, current plastic uptake class (plastics sucking plate and PVC, also high molecular polymer is claimed) easily there is breakage in wrapping material, especially when temperature is low, PVC sheet easily breaks, easily aging.
Summary of the invention
For the deficiencies in the prior art, the object of the invention is to provide a kind of solution increasing PVC sheet toughness, intensity and stretchiness, significantly can improve the weather resistance of polychlorovinyl sheet material, for low temperature (low temperature resistant), there is excellence, product performance: the easily aging shortcoming overcoming PVC sheet, improve its weather resistance, improve the work-ing life of sheet material, widen the use field of product, meet the demand in market.
In order to realize object of the present invention, present invention employs following technical scheme,
The invention provides a kind of preparation method of PVC modification sheet material, comprise the following steps:
(1), prepare raw material, its composition and weight part are:
PVC powder (polyvinyl chloride resin powder) 98 ~ 105 parts,
4 ~ 4.5 parts, softening agent (dioctyl terephthalate DOTP),
Interior lubrication prescription (n-butyl stearate) 0.8 ~ 1 part,
Outer lubrication prescription (esters solvent) 0.3 ~ 0.4 part,
Toughner (polyethylene, paracril) 4 ~ 5 parts,
Processing aid (acrylate resin ACR resin) 1.3 ~ 1.8 parts,
Stablizer (thiol methyl tin) 2.3 ~ 2.7 parts,
Pigment 0.2 ~ 0.3 part,
Toughener: methacrylic resin (MBS resin) 5.5 ~ 6 parts;
Raw material drying: dry (110 ~ 125 DEG C of dryings), 2 ~ 4 hours;
(2), in mixing machine, dried raw material is added, mixing, high-speed stirring 5 ~ 10 minutes, order by merging: powdery class PVC plastic, softening agent, stablizer, inside and outside lubrication prescription, processing aid, pigment, toughner, toughener; High-speed mixing, obtains Preblend;
(3), Preblend is cooled to 45 ~ 55 DEG C;
(4), extrude: Preblend after step (3) cooling is added in forcing machine through feeder, is extruded by forcing machine, then pass through mould molding;
Described forcing machine complete processing is as follows:
Described forcing machine is provided with five temperature controlled region, and wherein, the temperature of the first temperature controlled region is 150 ~ 170 DEG C, the temperature of the second temperature controlled region is 140 ~ 160 DEG C, the temperature of the 3rd temperature controlled region is 140 ~ 150 DEG C, and the temperature of the 4th temperature controlled region is 140 ~ 150 DEG C, and the temperature of the 5th temperature controlled region is 140 ~ 150 DEG C;
Described mould control region is provided with 7 temperature controlled region: die head comprises the 1st to the 7th temperature controlled region of arranged adjacent successively, and wherein, 1 district's temperature is 185 ~ 190 DEG C, and 2 ~ 6 district's temperature are 175 ~ 180 DEG C, and 7 district's temperature are 185 ~ 190 DEG C;
(5) material, by step (4) obtained passes through by roller extrusion molding, and described roller is provided with three temperature controlled region: the temperature in a district 150 ~ 160 DEG C, the temperature in 2nd district 140 ~ 150 DEG C, the temperature in 3rd district 100 ~ 120 DEG C;
(6), product cooling;
(7), shear forming: cutting;
(8), drying treatment, packaging, obtain product.
Wherein in an embodiment, the raw material composition of sheet material and weight part can be: PVC powder 110 parts, 5 parts, softening agent, interior lubrication prescription 1 part, outer lubrication prescription 0.6 part, toughner 5 parts, processing aid 2 parts, stablizer 3 parts, pigment 0.5 part, toughener 7 parts.
Wherein in some embodiments, described PVC powder is polyvinyl chloride resin powder;
Wherein in some embodiments, described softening agent is dioctyl terephthalate (DOTP);
Wherein in some embodiments, described interior lubrication prescription is n-butyl stearate;
Wherein in some embodiments, described outer lubrication prescription (esters solvent) is: a kind of and combination in methyl-hydrogen-sulfate monomethyl-sulfate CH3OSO3H, ethyl acetate CH3COOCH2CH3, phenylacetate, methylfuroate;
Wherein in some embodiments, described anti-toughner is a kind of in polyethylene, paracril and combination;
Wherein in some embodiments, described processing aid is acrylate resin (ACR resin);
Wherein in some embodiments, described stablizer is organotin: thiol methyl tin, cold-resistant: normal temperature is stablized to product performance within-20 DEG C, does not break;
Wherein in some embodiments, described toughener is methacrylic resin (MBS resin).
A kind of PVC modification sheet material provided by the present invention has the following advantages: normal temperature stability of characteristics, not easily aging, and this product resists cold, and subzero 20 DEG C to subzero 50 DEG C time, sheet material toughness, intensity and stretchiness are good.PVC modification sheet material of the present invention has excellent shock resistance, good weather resistance, and low temperature not easily breaks, and has better mechanical property and mechanical property, and its light weight, easy-formation technique are simple, low cost and other advantages.
Embodiment
The raw material that the embodiment of the present invention uses is as follows:
PVC powder: polyvinyl chloride resin powder, purchased from Dongguan City Tian Yi Chemical Co., Ltd.;
Softening agent: dioctyl terephthalate (DOTP), purchased from Changxing (Guangzhou) precise dipping company limited;
Interior lubrication prescription: n-butyl stearate, purchased from Changxing (Guangzhou) precise dipping company limited;
Outer lubrication prescription (esters solvent): methyl-hydrogen-sulfate monomethyl-sulfate, ethyl acetate, phenylacetate, methylfuroate, purchased from Dongguan City Tian Yi Chemical Co., Ltd.;
Toughner: polyethylene, paracril, purchased from the brilliant hundred million ceramics company limiteds in Zibo;
Processing aid: ACR resin (acrylate resin), purchased from Chemical Reagent Co., Ltd., Sinopharm Group;
Stablizer: organotin (thiol methyl tin), purchased from Chemical Reagent Co., Ltd., Sinopharm Group;
Toughener: methacrylic resin (MBS resin), purchased from the brilliant hundred million ceramics company limiteds in Zibo.
The present invention is further elaborated by the following examples.
The raw material composition of PVC modification sheet material of the present invention and weight part are:
PVC powder is polyvinyl chloride resin powder;
Softening agent is dioctyl terephthalate (DOTP);
Interior lubrication prescription is n-butyl stearate;
Outer lubrication prescription (esters solvent) is: a kind of and combination in methyl-hydrogen-sulfate monomethyl-sulfate CH3OSO3H, ethyl acetate CH3COOCH2CH3, phenylacetate, methylfuroate;
Anti-toughner is a kind of in polyethylene, paracril and combination;
Processing aid is ACR resin: acrylate resin;
Stablizer is organotin: thiol methyl tin;
Toughener is methacrylic resin (MBS resin).
Embodiment 1:
(1) raw material is prepared according to the following formulation: PVC powder 100 parts, dioctyl terephthalate (DOTP) 3.5 parts, n-butyl stearate 0.6 part, methyl-hydrogen-sulfate monomethyl-sulfate 0.3 part, polyethylene 3.5 parts, acrylate resin (ACR resin) 1.2 parts, thiol methyl tin 2.2 parts, pigment 0.2 part, methacrylic acid (MBS resin: MBS) 5.5 parts;
Raw material drying: 115 DEG C of oven dry, 2.5 hours, for subsequent use;
(2), in mixing machine, dried raw material is added, mixing, high-speed stirring 8 minutes, order by merging: powdery class PVC plastic, dioctyl terephthalate (DOTP), thiol methyl tin, polyethylene, methyl-hydrogen-sulfate monomethyl-sulfate, acrylate resin (ACR resin), pigment, polyethylene, methacrylic acid (MBS resin); High-speed mixing, obtains Preblend;
(3), Preblend is cooled to 48 DEG C;
(4), extrude: Preblend after step (3) cooling is added in forcing machine through feeder, is extruded by forcing machine, then pass through mould molding;
Described forcing machine complete processing is as follows:
Described forcing machine is provided with five temperature controlled region, and wherein, the temperature of the first temperature controlled region is 155 DEG C, and the temperature of the second temperature controlled region is 150 DEG C, and the temperature of the 3rd temperature controlled region is 143 DEG C, and the temperature of the 4th temperature controlled region is 148 DEG C, and the temperature of the 5th temperature controlled region is 145 DEG C;
Described mould control region is provided with 7 temperature controlled region: die head comprises the 1st to the 7th temperature controlled region of arranged adjacent successively, and wherein, 1 district's temperature is 189 DEG C, and 2 ~ 6 district's temperature are 178 DEG C, and 7 district's temperature are 189 DEG C;
(5) material, by step (4) obtained passes through by roller extrusion molding, and described roller is provided with three temperature controlled region: the temperature in a district 156 DEG C, the temperature in 2nd district 145 DEG C, the temperature in 3rd district 108 DEG C;
(6), product cooling; Shear forming: cutting; Drying treatment, packaging, obtains product.
Embodiment 2:
(1) raw material is prepared according to the following formulation: PVC powder 107 parts, dioctyl terephthalate (DOTP) 4.3 parts, n-butyl stearate 0.8 part, paracril 0.5 part, polyethylene 4.5 parts, acrylate resin (ACR resin) 1.9 parts, thiol methyl tin 2.8 parts, pigment 0.4 part, methacrylic acid (MBS resin: MBS) 6.5 parts;
Raw material drying: 122 DEG C of dryings, 3.5 hours, for subsequent use;
(2), in mixing machine, dried raw material is added, mixing, high-speed stirring 6 minutes, order by merging: powdery class PVC plastic (polyvinyl chloride (PVC) RESINS), softening agent, stablizer, inside and outside lubrication prescription, processing aid, pigment, toughner, toughener; High-speed mixing, obtains Preblend;
(3), Preblend is cooled to 50 DEG C;
(4), extrude: Preblend after step (3) cooling is added in forcing machine through feeder, is extruded by forcing machine, then pass through mould molding;
Described forcing machine complete processing is as follows:
Described forcing machine is provided with five temperature controlled region, and wherein, the temperature of the first temperature controlled region is 165 DEG C, and the temperature of the second temperature controlled region is 156 DEG C, and the temperature of the 3rd temperature controlled region is 150 DEG C, and the temperature of the 4th temperature controlled region is 142 DEG C, and the temperature of the 5th temperature controlled region is 148 DEG C;
Described mould control region is provided with 7 temperature controlled region: die head comprises the 1st to the 7th temperature controlled region of arranged adjacent successively, and wherein, 1 district's temperature is 186 DEG C, and 2 ~ 6 district's temperature are 180 DEG C, and 7 district's temperature are 185 DEG C;
(5) material, by step (4) obtained passes through by roller extrusion molding, and described roller is provided with three temperature controlled region: the temperature in a district 151 DEG C, the temperature in 2nd district 140 DEG C, the temperature in 3rd district 120 DEG C;
(6), product cooling; Shear forming: cutting; Drying treatment, packaging, obtains product.
Wherein in a specific embodiment, the raw material composition of sheet material and weight part can be: PVC powder 110 parts, 5 parts, softening agent, interior lubrication prescription 1 part, outer lubrication prescription 0.6 part, toughner 5 parts, processing aid 2 parts, stablizer 3 parts, pigment 0.5 part, toughener 7 parts.
The present invention contributes to the toughness improving PVC sheet, efficiently avoid the shortcoming that sheet material is easily aging, improves the weather resistance of sheet material, have good application prospect.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (3)
1. a preparation method for PVC modification sheet material, is characterized in that, comprises the following steps:
(1), prepare raw material, its composition and weight part are:
Raw material drying: 110 ~ 125 DEG C of oven dry, 2 ~ 4 hours, for subsequent use;
(2), in mixing machine, dried raw material is added, mixing, high-speed stirring 5 ~ 10 minutes, order by merging: powdery class PVC plastic, softening agent, stablizer, interior lubrication prescription, outer lubrication prescription, processing aid, pigment, toughner, toughener; High-speed mixing, obtains Preblend;
(3), Preblend is cooled to 45 ~ 55 DEG C;
(4), extrude: Preblend after step (3) cooling is added in forcing machine through feeder, is extruded by forcing machine, then pass through mould molding;
Described forcing machine complete processing is as follows:
Described forcing machine is provided with five temperature controlled region, and wherein, the temperature of the first temperature controlled region is 150 ~ 170 DEG C, the temperature of the second temperature controlled region is 140 ~ 160 DEG C, the temperature of the 3rd temperature controlled region is 140 ~ 150 DEG C, and the temperature of the 4th temperature controlled region is 140 ~ 150 DEG C, and the temperature of the 5th temperature controlled region is 140 ~ 150 DEG C;
Described mould control region is provided with 7 temperature controlled region: die head comprises the 1st to the 7th temperature controlled region of arranged adjacent successively, and wherein, 1 district's temperature is 185 ~ 190 DEG C, and 2 ~ 6 district's temperature are 175 ~ 180 DEG C, and 7 district's temperature are 185 ~ 190 DEG C;
(5) material, by step (4) obtained passes through by roller extrusion molding, and described roller is provided with three temperature controlled region: the temperature in a district 150 ~ 160 DEG C, the temperature in 2nd district 140 ~ 150 DEG C, the temperature in 3rd district 100 ~ 120 DEG C;
(6), product cooling;
(7), shear forming: cutting;
(8), drying treatment, packaging, obtain product.
2. the preparation method of a kind of PVC modification sheet material according to claim 1, it is characterized in that, described PVC powder is polyvinyl chloride resin powder;
Described softening agent is dioctyl terephthalate;
Described interior lubrication prescription is n-butyl stearate;
Described outer lubrication prescription is esters solvent: a kind of and combination in methyl-hydrogen-sulfate monomethyl-sulfate, ethyl acetate, phenylacetate, methylfuroate;
Described anti-toughner is a kind of in polyethylene, paracril and combination;
Described processing aid is acrylate resin;
Described stablizer is organotin: thiol methyl tin;
Described toughener is methacrylic resin.
3. the preparation method of a kind of PVC modification sheet material according to claim 2, is characterized in that, comprise the following steps:
(1) raw material is prepared according to the following formulation: PVC powder 100 parts, dioctyl terephthalate 3.5 parts, n-butyl stearate 0.6 part, methyl-hydrogen-sulfate monomethyl-sulfate 0.3 part, polyethylene 3.5 parts, acrylate resin 1.2 parts, thiol methyl tin 2.2 parts, pigment 0.2 part, methacrylic resin 5.5 parts;
Raw material drying: 115 DEG C of oven dry, 2.5 hours, for subsequent use;
(2), in mixing machine, dried raw material is added, mixing, high-speed stirring 8 minutes, order by merging: powdery class PVC plastic, dioctyl terephthalate, thiol methyl tin, n-butyl stearate, methyl-hydrogen-sulfate monomethyl-sulfate, acrylate resin, pigment, polyethylene, methacrylic resin; High-speed mixing, obtains Preblend;
(3), Preblend is cooled to 48 DEG C;
(4), extrude: Preblend after step (3) cooling is added in forcing machine through feeder, is extruded by forcing machine, then pass through mould molding;
Described forcing machine complete processing is as follows:
Described forcing machine is provided with five temperature controlled region, and wherein, the temperature of the first temperature controlled region is 155 DEG C, and the temperature of the second temperature controlled region is 150 DEG C, and the temperature of the 3rd temperature controlled region is 143 DEG C, and the temperature of the 4th temperature controlled region is 148 DEG C, and the temperature of the 5th temperature controlled region is 145 DEG C;
Described mould control region is provided with 7 temperature controlled region: die head comprises the 1st to the 7th temperature controlled region of arranged adjacent successively, and wherein, 1 district's temperature is 189 DEG C, and 2 ~ 6 district's temperature are 178 DEG C, and 7 district's temperature are 189 DEG C;
(5) material, by step (4) obtained passes through by roller extrusion molding, and described roller is provided with three temperature controlled region: the temperature in a district 156 DEG C, the temperature in 2nd district 145 DEG C, the temperature in 3rd district 108 DEG C;
(6), product cooling;
(7), shear forming: cutting;
(8), drying treatment, packaging, obtain product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410831601.7A CN104650499A (en) | 2014-12-26 | 2014-12-26 | Preparation method of PVC modified sheet |
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| CN201410831601.7A CN104650499A (en) | 2014-12-26 | 2014-12-26 | Preparation method of PVC modified sheet |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105906987A (en) * | 2016-06-27 | 2016-08-31 | 江苏金材科技有限公司 | Environment-friendly PVC drip irrigation pipe and preparation method thereof |
| CN106046603A (en) * | 2016-06-29 | 2016-10-26 | 江苏金材科技有限公司 | Weather-resistant PVC (polyvinyl chloride) |
| CN106808668A (en) * | 2017-01-06 | 2017-06-09 | 山东科化高分子科技股份有限公司 | A kind of production technology of floor glue |
| CN107022151A (en) * | 2016-02-02 | 2017-08-08 | 浙江易田包装材料有限公司 | The formula and processing technology of PVC calendering water drilling pieces |
| CN110819038A (en) * | 2019-11-23 | 2020-02-21 | 温州市隆昌塑料有限公司 | PVC sheet and preparation method thereof |
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| CN103122111A (en) * | 2013-02-27 | 2013-05-29 | 东莞欧德雅装饰材料有限公司 | Environment-friendly PVC (polyvinyl chloride) household edge banding and preparation method thereof |
| CN103602009A (en) * | 2013-11-26 | 2014-02-26 | 山东瑞丰高分子材料股份有限公司 | High-transparency no-flow line hard PVC (polyvinyl chloride) calendered sheet and preparation method thereof |
| CN103910953A (en) * | 2014-04-02 | 2014-07-09 | 合肥杰事杰新材料股份有限公司 | Weather-resistant and flame-retardant PVC (polyvinyl chloride)/ASA (acrylonitrile-acrylic acid-styrene copolymer) alloy material and preparation method thereof |
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| CN1958661A (en) * | 2006-11-27 | 2007-05-09 | 天津德昊超微新材料有限公司 | Inorganic powder filled, modified PVC alloy material in screen mesh of ABS/6000, and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107022151A (en) * | 2016-02-02 | 2017-08-08 | 浙江易田包装材料有限公司 | The formula and processing technology of PVC calendering water drilling pieces |
| CN105906987A (en) * | 2016-06-27 | 2016-08-31 | 江苏金材科技有限公司 | Environment-friendly PVC drip irrigation pipe and preparation method thereof |
| CN106046603A (en) * | 2016-06-29 | 2016-10-26 | 江苏金材科技有限公司 | Weather-resistant PVC (polyvinyl chloride) |
| CN106808668A (en) * | 2017-01-06 | 2017-06-09 | 山东科化高分子科技股份有限公司 | A kind of production technology of floor glue |
| CN110819038A (en) * | 2019-11-23 | 2020-02-21 | 温州市隆昌塑料有限公司 | PVC sheet and preparation method thereof |
| CN110819038B (en) * | 2019-11-23 | 2022-05-03 | 温州市隆昌塑料有限公司 | PVC sheet and preparation method thereof |
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