CN113999451A - Flame-retardant EVA composite material, preparation method and flame-retardant EVA automobile front wall - Google Patents
Flame-retardant EVA composite material, preparation method and flame-retardant EVA automobile front wall Download PDFInfo
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- CN113999451A CN113999451A CN202111387966.1A CN202111387966A CN113999451A CN 113999451 A CN113999451 A CN 113999451A CN 202111387966 A CN202111387966 A CN 202111387966A CN 113999451 A CN113999451 A CN 113999451A
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
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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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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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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- 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
- C08K3/2279—Oxides; Hydroxides of metals of antimony
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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
- C08K5/00—Use of organic ingredients
- C08K5/02—Halogenated hydrocarbons
- C08K5/03—Halogenated hydrocarbons aromatic, e.g. C6H5-CH2-Cl
Abstract
The invention discloses a flame-retardant EVA composite material, a preparation method and a flame-retardant EVA automobile front wall, and relates to the technical field of EVA composite materials for automobile front walls, wherein the flame-retardant EVA composite material is prepared from the following raw material components: 2-5 parts of POE; 15-25 parts by weight of EVA; 0.4-0.8 parts by weight of a coupling agent; 50-65 parts by weight of heavy calcium carbonate; 1.5-3 parts by weight of a flame retardant; 0-1 part by weight of black master batch; 0.8-2 parts by weight of white oil; 8-15 parts of a return material. The flame retardance of the EVA composite material for the front wall of the automobile is improved by carrying out flame retardance modification on the EVA composite material, and a method for improving the flame retardance of the front wall of the automobile by physically adding a flame retardant layer in the prior art is replaced.
Description
Technical Field
The invention relates to an EVA composite material used for an automobile front wall, in particular to a flame-retardant EVA composite material, a preparation method and a flame-retardant EVA automobile front wall.
Background
The automobile front wall is a partition plate between an engine compartment and a carriage, plays a role in heat and sound insulation, and research on an EVA material used as an automobile front wall mainly focuses on sound and heat insulation, and does not relate to flame retardant research on the EVA material.
The prior patent technology with the application number of CN201310744380.5 discloses a heat and sound insulation composition which is applied to a front panel of an automobile, EVA, plastic and a cross-linking agent are added into inorganic powder, the reasonable proportion among the components is controlled, the inorganic powder can fully exert the sound insulation and heat insulation performance under the combined action of the EVA, the plastic and the cross-linking agent, and the heat and sound insulation composition obtained by the prior art is applied to the front panel of the automobile and does not have the flame retardant effect.
In the prior art, the flame retardance of the automobile front wall panel is generally realized by physically adding a flame retardant layer on the front wall panel, and the flame retardant research on the materials used for the automobile front wall panel is not involved.
The application number is CN 201921587182.1's prior patent art discloses preceding wall sound insulation heat insulating mattress for car, including preceding wall pad body, first felt of spinning, the felt is spun to the second, first fire-retardant layer (like glass fiber), the fire-retardant layer of second (like glass fiber), flexible ball, first back up coat, the second back up coat, inserted block and slot, flexible ball inside is equipped with first spherical shell, the spherical shell of second, solid spheroid, first through-hole, second through-hole and third through-hole, first felt of spinning is the flute type structure with first fire-retardant layer junction, the felt is spun to the second and the fire-retardant layer junction of second also is the flute type structure. The glass fiber is used as a flame-retardant layer to be physically attached to the front wall of the automobile; however, the shape of the front wall of the automobile is irregular, a plurality of holes for passing the lines are formed in the front wall, and the flame-retardant layer is added on the front wall plate, so that the automobile is complicated.
Disclosure of Invention
In order to solve the problem of poor flame retardance of the material for producing the automobile front wall, the invention provides a flame-retardant EVA composite material capable of being used for producing an automobile front wall plate, which is prepared from the following raw material components:
2-5 parts of POE;
15-25 parts by weight of EVA;
0.4-0.8 parts by weight of a coupling agent;
50-65 parts by weight of heavy calcium carbonate;
1.5-3 parts by weight of a flame retardant;
0-1 part by weight of black master batch;
0.8-2 parts by weight of white oil;
8-15 parts of a return material.
Preferably, the flame-retardant EVA composite material is prepared from the following raw material components:
3-4 parts of POE;
18-20 parts by weight of EVA;
0.5-0.7 parts by weight of a coupling agent;
55-60 parts by weight of heavy calcium carbonate;
2-3 parts by weight of a flame retardant;
0.6-0.8 parts of black master batch;
0.8-1 part by weight of white oil;
10-12 parts by weight of a feed back.
POE, a thermoplastic elastomer; when POE plastic is melted, the flowability of the POE plastic is better, and the POE is added into the system, so that the flowability of the whole system can be improved, and the dispersion effect of the heavy calcium carbonate in the system can be improved. The coupling agent is mainly used for improving the interface action between the heavy calcium carbonate and the EVA. The heavy calcium carbonate can be used as a filler and can also enhance the hardness of the product. By adding a small amount of flame retardant into the EVA composite material, the flame retardance of the product can be obviously improved.
The coupling agent is preferably a bimetallic coupling agent, and is further preferably an aluminum-titanium composite coupling agent.
The flame retardant is preferably decabromodiphenylethane or antimony trioxide, and the flame retardant is further preferably decabromodiphenylethane.
The invention also provides a preparation method of the flame-retardant EVA composite material, in particular to a production method of a flame-retardant EVA composite sheet, which comprises the following steps: feeding and uniformly mixing the raw materials in parts by weight, extruding the mixture through a screw and a die, and cooling and shaping the mixture through a three-roller calendering process to form a sheet. The temperature in the whole production process is controlled below 200 ℃, preferably, the screw temperature is 160-190 ℃, and the mold temperature is 170-190 ℃. Further preferably, the temperature of the screw is 170-180 ℃, and the temperature of the die is 180-190 ℃; preferably, the feeding speed is 11-15 r/min.
The preparation method of the flame-retardant EVA composite material provided by the invention has the advantages that the raw material cost is low, mature production equipment is selected, and the EVA sheet with low cost, good flame-retardant effect, good molding, glossy surface and tidiness is obtained.
The invention also provides a flame-retardant EVA automobile front wall, which is manufactured by adopting the EVA sheet prepared by the production method of the flame-retardant EVA composite material.
The invention has the beneficial effects that:
1) the method for improving the flame retardance of the front wall of the automobile by the aid of the physically attached flame retardant layer in the prior art is replaced by the method for improving the flame retardance of the front wall of the automobile by means of performing flame retardant modification on the EVA composite material.
2) Through comparison tests, the combustion distance of the composite EVA sheet added with the flame retardant is 56mm, the combustion time is 72s (self-extinguishing), the combustion speed is 46mm/min, and the requirement in GB8410-2006 is met, while the combustion distance of the composite EVA sheet without the flame retardant is 311mm, the combustion time is 168s, and the combustion speed is 111 mm/min.
Detailed Description
Example 1
The flame-retardant EVA composite material is prepared from the following raw material components:
POE，2kg；
EVA，15kg；
0.4kg of aluminum-titanium composite coupling agent;
50kg of heavy calcium carbonate;
antimony trioxide flame retardant, 1.5 kg;
0.8kg of white oil;
8kg of feed back.
Feeding and uniformly mixing the raw materials according to the weight parts in the embodiment, wherein the feeding speed is 11 revolutions per minute, extruding the raw materials through a screw and a die, and cooling and shaping the raw materials through a three-roll calendering process to form a sheet; in this embodiment, the screw temperature is 160 ℃ and the mold temperature is 170 ℃.
Example 2
The flame-retardant EVA composite material is prepared from the following raw material components:
POE，5kg；
EVA，25kg；
0.8kg of aluminum-titanium composite coupling agent;
65kg of heavy calcium carbonate;
3kg of antimony trioxide flame retardant;
1kg of black master batch;
2kg of white oil;
feed back, 15 kg.
Feeding and uniformly mixing the raw materials according to the weight parts in the embodiment, wherein the feeding speed is 15 r/min, extruding the raw materials through a screw and a die, and cooling and shaping the raw materials through a three-roll calendering process to form a sheet; in this embodiment, the screw temperature is 190 ℃ and the mold temperature is 190 ℃.
Example 3
The flame-retardant EVA composite material is prepared from the following raw material components:
POE-6202，3kg；
EVA-5110J，18kg；
0.5kg of aluminum-titanium composite coupling agent;
55kg of ground calcium carbonate;
decabromodiphenylethane flame retardant, 2.0 kg;
black masterbatch, 0.6kg
0.8kg of white oil;
10kg of feed back.
Feeding and uniformly mixing the raw materials according to the weight parts in the embodiment, wherein the feeding speed is 13 revolutions per minute, extruding the raw materials through a screw and a die, and cooling and shaping the raw materials through a three-roll calendering process to form a sheet; in this embodiment, the screw temperature is 170 ℃ and the die temperature is 180 ℃.
Example 4
The flame-retardant EVA composite material is prepared from the following raw material components:
POE-6202，4kg；
EVA-5110J，20kg；
0.7kg of aluminum-titanium composite coupling agent;
60kg of ground calcium carbonate;
3.0kg of decabromodiphenylethane flame retardant;
black masterbatch, 0.8kg
1.0kg of white oil;
feed back, 12 kg.
Feeding and uniformly mixing the raw materials according to the weight parts in the embodiment, wherein the feeding speed is 12 r/min, extruding the raw materials through a screw and a die, and cooling and shaping the raw materials through a three-roll calendering process to form a sheet; in this embodiment, the screw temperature is 180 ℃ and the mold temperature is 190 ℃.
Example 5
The flame-retardant EVA composite material is prepared from the following raw material components:
POE-6202，3kg；
EVA-5110J，18kg；
0.5kg of aluminum-titanium composite coupling agent;
60kg of ground calcium carbonate;
decabromodiphenylethane flame retardant, 2.0 kg;
black masterbatch, 0.6kg
1.0kg of white oil;
10kg of feed back.
Feeding and uniformly mixing the raw materials according to the weight parts in the embodiment, wherein the feeding speed is 13.5 revolutions per minute, extruding the raw materials through a screw and a die, and cooling and shaping the raw materials through a three-roll calendering process to form a sheet; in this embodiment, the screw temperature is 180 ℃ and the mold temperature is 190 ℃.
Control test
The flame-retardant EVA composite material in the control test is prepared from the following raw material components:
POE-6202，3kg；
EVA-5110J，18kg；
0.5kg of aluminum-titanium composite coupling agent;
60kg of ground calcium carbonate;
black masterbatch, 0.6kg
1.0kg of white oil;
10kg of feed back.
Feeding and uniformly mixing the raw materials according to the weight parts in the embodiment, wherein the feeding speed is 13.5 revolutions per minute, extruding the raw materials through a screw and a die, and cooling and shaping the raw materials through a three-roll calendering process to form a sheet; in this embodiment, the screw temperature is 180 ℃ and the mold temperature is 190 ℃.
The EVA composite sheets obtained in examples 1 to 5 and the control test were sampled at 356 × 100mm, and the combustion characteristics were measured according to GB 8410-.
As can be seen from table 1, the flame retardant effect of the EVA composite sheet with the flame retardant added is significantly improved compared with the flame retardant effect of the EVA composite sheet without the flame retardant added; and the combustion speed of the EVA composite sheet added with the flame retardant is far less than 100mm/min, thereby meeting the requirements of GB 8410-2006. TABLE 1 results of testing the Combustion Properties of EVA composite sheets with and without flame retardant
Claims (8)
1. The flame-retardant EVA composite material is characterized by being prepared from the following raw material components:
2-5 parts of POE;
15-25 parts by weight of EVA;
0.4-0.8 parts by weight of a coupling agent;
50-65 parts by weight of heavy calcium carbonate;
1.5-3 parts by weight of a flame retardant;
0-1 part by weight of black master batch;
0.8-2 parts by weight of white oil;
8-15 parts of a return material.
2. The flame-retardant EVA composite material of claim 1, which is prepared from the following raw material components:
3-4 parts of POE;
18-20 parts by weight of EVA;
0.5-0.7 parts by weight of a coupling agent;
55-60 parts by weight of heavy calcium carbonate;
2-3 parts by weight of a flame retardant;
0.6-0.8 parts of black master batch;
0.8-1 part by weight of white oil;
10-12 parts by weight of a feed back.
3. The flame retardant EVA composite according to claim 1, characterized in that: the coupling agent is an aluminum-titanium composite coupling agent.
4. The flame retardant EVA composite according to claim 3, characterized in that: the flame retardant is decabromodiphenylethane or antimony trioxide.
5. A method for preparing the flame-retardant EVA composite material of any one of claims 1 to 4, which comprises the following steps: feeding and uniformly mixing the raw materials in parts by weight, extruding the mixture through a screw and a die, and cooling and shaping the mixture through a three-roller calendering process to form a sheet.
6. The method for preparing the flame-retardant EVA composite material according to claim 5, wherein the screw temperature is 160-190 ℃ and the mold temperature is 170-190 ℃.
7. The method for preparing the flame-retardant EVA composite material according to claim 6, wherein the screw temperature is 170-180 ℃ and the mold temperature is 180-190 ℃.
8. A flame retardant EVA automotive dash panel made from the sheet material obtained by the method of claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111387966.1A CN113999451A (en) | 2021-11-22 | 2021-11-22 | Flame-retardant EVA composite material, preparation method and flame-retardant EVA automobile front wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111387966.1A CN113999451A (en) | 2021-11-22 | 2021-11-22 | Flame-retardant EVA composite material, preparation method and flame-retardant EVA automobile front wall |
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Citations (10)
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|---|---|---|---|---|
| JPS63265606A (en) * | 1987-04-24 | 1988-11-02 | Honda Motor Co Ltd | Molding method for sound insulating material for automobile |
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| CN104744780A (en) * | 2013-12-30 | 2015-07-01 | 青岛万力科技有限公司 | Polyethylene flame retardant filling masterbatch and preparation method thereof |
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| CN113462067A (en) * | 2021-07-12 | 2021-10-01 | 潍坊亚星化学股份有限公司 | Halogen-free flame-retardant EVA cable material composite material and preparation method thereof |
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-
2021
- 2021-11-22 CN CN202111387966.1A patent/CN113999451A/en active Pending
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| JPH1060192A (en) * | 1996-08-19 | 1998-03-03 | Shin Kobe Electric Mach Co Ltd | Flame retardant resin composition and sheet made therefrom |
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| CN104744780A (en) * | 2013-12-30 | 2015-07-01 | 青岛万力科技有限公司 | Polyethylene flame retardant filling masterbatch and preparation method thereof |
| CN104744789A (en) * | 2013-12-30 | 2015-07-01 | 比亚迪股份有限公司 | Sound and heat insulation composition and preparation method thereof |
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| CN113480806A (en) * | 2021-09-06 | 2021-10-08 | 北京能之光科技有限公司 | Composite resin material with improved properties and use thereof in automotive trim materials |
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