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Glycidyl ester composition used as expanding material and preparation method of glycidyl ester composition

A technology of glycidyl ester and swelling material, which is applied in the field of glycidyl ester composition and its preparation, can solve problems such as difficulty, cell structure, temperature resistance and mechanical and physical properties, and achieve good results

Active Publication Date: 2015-12-16
新子元(上海)科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The body cavity expansion materials in the prior art are generally prepared from materials such as EVA\EMA\EBA. Since these materials must reach a certain glue content and a certain heat-resistant temperature, the materials must be polymerized and copolymerized. The heat-resistant temperature meets the requirements, and the foaming performance of the material also meets the loading requirements of the main engine factory. The performance stability of the produced products is relatively good, the foaming cells are uniform, and the surface is smooth. Compared with imported products, each has its own advantages and disadvantages.
However, the molecular structure of EVA\EMA\EBA raw materials is linear or dendritic. According to the currently used expansion materials, the maximum expansion ratio can only be 9-10 times. When it is required to expand more than 9-10 times, it is necessary tougher
[0003] For example, the EMA\EBA\EMMA raw materials used in the patent CN1887949 are base materials, which can solve the foaming problem and temperature and odor resistance of the material well, but the base materials used are EMA\EBA\EMMA, and the molecular structure of these base materials is a straight line type or dendritic type, the maximum expansion ratio of the product produced can only be 9-10 times. When the foaming ratio is required to be greater than 9-10 times, even if it can achieve 13-14 times the product, the cell structure of the material, The temperature resistance and mechanical and physical properties are much worse, for example, it is more difficult to achieve more than 16 times

Method used

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  • Glycidyl ester composition used as expanding material and preparation method of glycidyl ester composition
  • Glycidyl ester composition used as expanding material and preparation method of glycidyl ester composition
  • Glycidyl ester composition used as expanding material and preparation method of glycidyl ester composition

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Put 30 kilograms of ethylene / methyl acrylate copolymer, 35 kilograms of ethylene / butyl acrylate copolymer and 35 kilograms of glycidyl ester copolymer into the blender and stir well. In addition, 1.5 kilograms of DCP, 20 kilograms of OBSH powder and 1.5 kilograms AC powder, 0.8 kg of zinc stearate, 0.2 kg of antioxidant KY-7910, 15 kg of calcium carbonate and 0.6 kg of color masterbatch are pre-mixed, and then put into the mixer and stirred evenly to make a mixture; , Through an extruder at 95-115 DEG C according to the extrusion process for extrusion granulation, drying, to obtain a glycidyl ester composition used as an expansion material of the present invention.

Embodiment 2

[0023] Put 25 kilograms of ethylene / methyl acrylate copolymer, 30 kilograms of ethylene / butyl acrylate copolymer and 45 kilograms of glycidyl ester copolymer into the blender and stir well. In addition, 1.2 kilograms of odorless DCP, 15 kilograms of OBSH particles and 1.8 Kg of AC granules, 0.6 kg of dibasic lead stearate, 0.4 kg of antioxidant 1010, 17.5 kg of talcum powder and 0.3 kg of color masterbatch are pre-mixed, and then put into the mixer and stirred evenly to make a mixture ; Then, through an extruder at 95-115 ℃ according to the extrusion process for extrusion granulation, drying, that is, a glycidyl ester composition used as an expansion material of the present invention is obtained.

Embodiment 3

[0025] Put 27.5 kilograms of ethylene / methyl acrylate copolymer, 32.5 kilograms of ethylene / butyl acrylate copolymer and 40 kilograms of glycidyl ester copolymer into the blender and stir well. In addition, 1.35 kilograms of DCP, 17.5 kilograms of OBSH powder and 1.65 kilograms AC powder, 0.7 kg of TX-3, 0.3 kg of antioxidant KY-7920, 20 kg of barium sulfate and 0.45 kg of color masterbatch are pre-mixed, and then put into the mixer and stirred evenly to make a mixture; then, The glycidyl ester composition used as an expansion material of the present invention is obtained by performing extrusion granulation and drying according to an extrusion process through an extruder at 95-115°C.

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Abstract

The invention provides glycidyl ester composition used as an expanding material. The glycidyl ester composition comprises main components including an ethylene / methyl acrylate copolymer, an ethylene / butyl acrylate copolymer and a glycidyl ester copolymer as well as other auxiliary materials. An expansion coefficient value of the expanding material is remarkably increased due to addition of the glycidyl ester copolymer adopting a net-shaped structure, the foaming ratio of the material is increased by more than 16 times, the foaming closed-cell structure of the material is maintained well, four items of emission performance about environmental protection meet standards, the cavity blocking performance of the expanding material is improved remarkably, no obvious damage is caused to mechanical performance and foaming performance of the vehicle body cavity sound insulation expanding material composition, the original characteristics of resin are remained basically, and the glycidyl ester composition has a good effect when used for preparing a vehicle body cavity sound insulation block.

Description

Technical field [0001] The invention relates to a chemical composition, in particular to a glycidyl ester composition used as an expansion material and a preparation method thereof. Background technique [0002] The existing car body cavity expansion materials are generally made of EVA\EMA\EBA and other materials. Since these materials must reach a certain glue content and a certain heat resistance temperature, the materials need to be polymerized and copolymerized, and the combined materials The heat-resistant temperature meets the requirements, and the foaming performance of the material also meets the loading requirements of the OEM. The product performance stability is relatively good, the foamed cells are uniform, and the surface is smooth. Compared with imported products, they have their own advantages and disadvantages. However, the molecular structure of EVA\EMA\EBA raw materials is linear or dendritic. According to the expansion materials currently in use, the maximum ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/06C08L23/08C08K13/02C08K3/26C08K3/34C08K3/30C08K5/14C08J9/10C08J9/04
Inventor 姚文华
Owner 新子元(上海)科技发展有限公司