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Process for preparing EVA/PE/starch composite foam material

A composite foaming and starch technology, which is applied in the field of preparation of EVA/PE/starch composite foaming materials, can solve the problems of easy compression deformation, cracks, and less addition, and achieve small compression deformation, wide market prospects, and return Good elasticity

Inactive Publication Date: 2007-05-30
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The common EVA or PE foaming materials currently on the market are generally made of calcium carbonate, EVA or PE, and other modifiers (such as POE, PE, BR, etc.) Poor resilience, easy compression deformation, easy to become brittle, cracks and other defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This example specifically describes the preparation process of the EVA / PE / corn starch composite foaming material. The corn starch is placed in a high-speed mixer, glycerin is added, and gelatinization is performed, and then it is added to the kneading mill together with EVA, PE and other raw materials. Mixing in the machine, when the mixing and plasticization is complete, the sheet is released, cut, weighed, put into a flat vulcanizer for vulcanization and foaming, and the EVA / PE / starch composite foaming material is prepared. The specific formula is shown in Table 1. Process parameters of high-speed mixer: the temperature should be controlled within 100°C. Process parameters of the open mill: the temperature is controlled within 120°C, and the materials are mixed evenly in the open mill until the plasticization is complete. The process parameters of the flat vulcanizer are: the temperature is 170°C-180°C, and the vulcanization time is 3min-4min.

[0024] Table 1EVA / PE...

Embodiment 2

[0027] Embodiment 2 narrates the preparation method of EVA / PE / rice starch composite foaming material. The processing steps and process parameters are the same as in Embodiment 1. The blending formula is shown in Table 2.

[0028] Table 2EVA / PE / rice starch composite foaming material blending formula

[0029] blended material

Embodiment 3

[0031] Example 3 describes the preparation method of EVA / PE / wheat starch composite foaming material. The processing steps and process parameters are the same as in Example 1. The blending formula is shown in Table 3.

[0032] Table 3 EVA / PE / wheat starch composite foam material blending formula

[0033] blended material

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PUM

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Abstract

The invention discloses a making method of EVA / PE / starch composite foaming material, which comprises the following steps: adopting EVA and PE as main raw material and starch and inorganic flour as auxiliary material; allocating glycerin, crosslinking agent, foamer AC and surface modifier; kneading starch and glycerin in the high-speed stirrer to form gelatinized starch; fusing in the open-fusing machine with EVA, PE surface modifier and other raw materials; grafting surface modifier and EVA and PE in the fusing course; modifying the binding property of two-phase interface of EVA and PE; forming piece after fusing and plasticizing; cutting; weighing; placing in the flat vulcanizer to do vulcanization foaming; obtaining the product.

Description

technical field [0001] The invention provides a preparation method of EVA / PE / starch composite foaming material. Background technique [0002] The common EVA or PE foaming materials currently on the market are generally made of calcium carbonate, EVA or PE, and other modifiers (such as POE, PE, BR, etc.) Poor resilience, easy compression deformation, easy to become brittle, cracks and other defects. In the past ten years, in order to expand or maintain their own market areas, domestic production enterprises have focused on reducing material costs, adding recycled EVA, other cheap elastomer materials, or increasing the amount of inorganic materials, or using EVA foam recycled materials, etc. Means to manufacture low-cost, low-grade EVA or PE foam materials. [0003] According to the novelty search results, most of the research and development of EVA or PE composite foaming materials in China currently use compounding with EVA, PE, POE, BR and other chemical substances. This ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08L3/02C08J9/00C08K5/23C08K5/14C08K5/09
Inventor 郑玉婴林增坤
Owner FUZHOU UNIV
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