阅读说明：本技术 一种汽车用环保阻燃热熔型阻尼胶片及其制备方法 (Environment-friendly flame-retardant hot-melt type damping film for automobile and preparation method thereof ) 是由 杨陈 王再学 徐云慧 徐彦红 孙婷婷 柯梦圆 钱德利 杨树林 丁勇 章林莉 李鹏 于 2020-06-04 设计创作，主要内容包括：本发明属于橡胶技术领域,具体涉及一种汽车用环保阻燃热熔型阻尼胶片及其制备方法。本发明阻尼胶片由下列重量份的原料制成：乙烯-辛烯共聚物(POE)35份、三元乙丙橡胶(EPDM)30份、乙烯-醋酸乙烯共聚物(EVA)20份、聚乙烯(PE)15份、重晶石粉60～100份、重钙60～100份、氢氧化铝15～30份、炭黑5～20份、VOC遮蔽剂5份、白油3～4份、防老剂1～3份、硬脂酸0.5～1.5份。由本发明配方制得的阻尼胶片不仅绿色环保,还具有良好的阻燃性,能够有效阻止汽车起火时火势的蔓延,利于逃生,降低财产损失和人员伤亡。(The invention belongs to the technical field of rubber, and particularly relates to an environment-friendly flame-retardant hot-melt type damping film for an automobile and a preparation method thereof. The damping film is prepared from the following raw materials in parts by weight: 35 parts of ethylene-octene copolymer (POE), 30 parts of Ethylene Propylene Diene Monomer (EPDM), 20 parts of ethylene-vinyl acetate copolymer (EVA), 15 parts of Polyethylene (PE), 60-100 parts of barite powder, 60-100 parts of heavy calcium carbonate, 15-30 parts of aluminum hydroxide, 5-20 parts of carbon black, 5 parts of VOC (volatile organic compound) shielding agent, 3-4 parts of white oil, 1-3 parts of anti-aging agent and 0.5-1.5 parts of stearic acid. The damping film prepared by the formula disclosed by the invention is green and environment-friendly, has good flame retardance, can effectively prevent the fire from spreading when an automobile is on fire, is beneficial to escape, and reduces property loss and casualties.)

1. The environment-friendly flame-retardant hot-melt damping film for the automobile is characterized by being prepared from the following raw materials in parts by weight:

ethylene-octene copolymer (POE): 35 parts of (B);

ethylene Propylene Diene Monomer (EPDM): 30 parts of (1);

ethylene-vinyl acetate copolymer (EVA): 20 parts of (1);

polyethylene (PE): 15 parts of (1);

barite powder: 60-100 parts;

heavy calcium: 60-100 parts;

aluminum hydroxide: 15-30 parts of a solvent;

carbon black: 5-20 parts of a solvent;

VOC masking agent: 5 parts of a mixture;

white oil: 3-4 parts;

an anti-aging agent: 1-3 parts;

stearic acid: 0.5 to 1.5 portions.

2. The hot-melt damping film according to claim 1, wherein the hot-melt damping film is prepared from the following raw materials in parts by weight: POE35 parts, EPDM30 parts, EVA20 parts, PE15 parts, barite powder 90 parts, heavy calcium carbonate 60 parts, aluminum hydroxide 15 parts, carbon black 5 parts, VOC (volatile organic compound) shielding agent 5 parts, white oil 4 parts, anti-aging agent 2 parts and stearic acid 1 part.

3. The hot-melt type damping film according to claim 2, wherein the antioxidant 1010 and the antioxidant 168 are mixed in a mass ratio of 1: 1.

4. The preparation method of the hot-melt damping film according to any one of claims 1 to 3, comprising the following steps: the raw materials are placed in an internal mixer, uniformly mixed at 170 ℃, uniformly fed into an extruder, extruded into a three-roll calender through a die at 200 ℃ and pressed into a sheet shape, so that the hot-melt type damping rubber sheet is prepared.

Technical Field

The invention belongs to the technical field of rubber, and particularly relates to an environment-friendly flame-retardant hot-melt type damping film for an automobile and a preparation method thereof.

Background

The damping film is an organic polymer material with viscoelasticity and is adhered to the inner surface of an automobile body, and the viscoelastic performance of the organic polymer material is utilized to convert the vibration mechanical energy of sound waves into heat energy which is dissipated, so that the aims of reducing the amplitude, reducing the vibration and inhibiting the noise are fulfilled, and the damping effect is achieved.

The existing damping material generates a large amount of smoke during combustion and releases toxic gas, so that the existing damping material is not beneficial to escape of people in a vehicle during ignition and can pollute the environment. Therefore, there is a need to develop a damping film which is environmentally friendly and has good flame retardant properties.

Disclosure of Invention

The invention aims to provide an environment-friendly flame-retardant hot-melt type damping film for an automobile and a preparation method thereof.

Based on the purpose, the invention adopts the following technical scheme: an environment-friendly flame-retardant hot-melt damping film for an automobile is prepared from the following raw materials in parts by weight:

ethylene-octene copolymer (POE): 35 parts of (B);

ethylene Propylene Diene Monomer (EPDM): 30 parts of (1);

ethylene-vinyl acetate copolymer (EVA): 20 parts of (1);

polyethylene (PE): 15 parts of (1);

barite powder: 60-100 parts;

heavy calcium: 60-100 parts;

aluminum hydroxide: 15-30 parts of a solvent;

carbon black: 5-20 parts of a solvent;

VOC masking agent: 5 parts of a mixture;

white oil: 3-4 parts;

an anti-aging agent: 1-3 parts;

stearic acid: 0.5 to 1.5 portions.

Preferably, the hot-melt damping film is prepared from the following raw materials in parts by weight: POE35 parts, EPDM30 parts, EVA20 parts, PE15 parts, barite powder 90 parts, heavy calcium carbonate 60 parts, aluminum hydroxide 15 parts, carbon black 5 parts, VOC (volatile organic compound) shielding agent 5 parts, white oil 4 parts, anti-aging agent 2 parts and stearic acid 1 part.

Preferably, the anti-aging agent is prepared by mixing the antioxidant 1010 and the antioxidant 168 according to the mass ratio of 1: 1.

The preparation process of the hot-melt damping film comprises the following steps: the raw materials are placed in an internal mixer, uniformly mixed at 170 ℃, uniformly fed into an extruder, extruded into a three-roll calender through a die at 200 ℃ and pressed into a sheet shape, so that the hot-melt type damping rubber sheet is prepared.

Compared with the prior art, the invention has the beneficial effects that:

the invention screens out a damping film formula which has the environmental protection performance meeting the technical requirements of interior parts and material emission performance of cars and the flame retardance meeting the enterprise standard of the technical center of Shanghai automobile group Limited company by taking main materials of POE, EPDM, EVA and PE as the basis and adjusting the dosage of auxiliary materials of barite powder, heavy calcium and aluminum hydroxide. The damping film prepared by the formula disclosed by the invention is green and environment-friendly, has good flame retardance, can effectively prevent the fire from spreading when an automobile is on fire, is beneficial to escape, and reduces property loss and casualties.

Drawings

FIG. 1 is a graph showing the comparison between before and after combustion of sample 8 in the combustion test.

Detailed Description