Preparation method of corrosion-resistant EVA foamed sheet

A foam sheet, corrosion resistance technology, applied in the field of EVA foam material preparation, can solve the problems of material deformation, reduced practicability, and reduced performance

Inactive Publication Date: 2021-01-05
尹志贵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The main component of the EVA foam sheet material is ethylene-vinyl acetate. When the foaming rate of ethylene-vinyl acetate is high, the material will be deformed seriously, the mechanical properties will be significantly...

Method used

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  • Preparation method of corrosion-resistant EVA foamed sheet

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Embodiment Construction

[0021] A method for preparing a corrosion-resistant EVA foam sheet, comprising the following steps,

[0022] S1. Preparation of equipment: firstly prepare the required materials fully, and then use the ethylene octene copolymer (POE) composite foam material and ethylene-vinyl acetate copolymer (EVA), EVA grafted with Malay The acid anhydride (EVA-g-MA) is distributed according to a certain proportion, and the parts by weight are fully mixed with 52 parts of EVA, 1-8 parts of EVA-g-MA and 2-6 parts of POE in the internal mixer , then add glycerin to process for five to eight minutes, then adjust the temperature of banburying to 100-115 degrees Celsius, and specify a certain number of minutes, usually about four minutes, and the speed is generally between 30-42rpm / min;

[0023] S2, internal mixer feeding: secondly, 0.8-1.8g weight portion of blowing agent azodicarbonamide, 0.3-1.4g weight portion of crosslinking agent diisoperoxide, and 8% talcum powder are added to the banburyi...

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Abstract

The invention relates to the technical field of EVA foaming material preparation, and discloses a preparation method of a corrosion-resistant EVA foaming sheet. Thepreparation method comprises the following steps: sufficiently preparing the required materials, and proportionally distributing the required ethylene-octene copolymer (POE) composite foaming material, ethylene-vinyl acetate copolymer (EVA) and EVA grafted maleic anhydride (EVA-g-MA) to obtain the corrosion-resistant EVA foaming sheet. The preparation method comprises the following steps: fully and uniformly mixing 52 parts by weight of EVA, 1-8 parts by weight of EVAgMA and 2-6 parts by weight of POE in an internal mixer. According to the preparation method of the corrosion-resistant EVA foamed sheet, the compatibility of EVA and TPU can be remarkably improved through EVA-g-MA; meanwhile, a POE material with high resilience is introduced, so that the prepared EVA/TPU/POE composite foamed material has good mechanical performance, the tensile strength is 2.09 to 2.44 MPa, the elongation at break is 278.2% to 314.2%, the tearing strength is 4.10 to 5.13 N/mm, and the peel strength is 2.70 to 3.72 N/mm. Meanwhile, the material has good resilience of 55-62%, compression set of 25-42% and low density of 0.2-0.25 g/cm3.

Description

technical field [0001] The invention relates to the technical field of EVA foam material preparation, in particular to a method for preparing a corrosion-resistant EVA foam sheet. Background technique [0002] Foaming material refers to the foaming material that can gasify and generate bubbles inside the material to make it a porous material. Usually, the sheet is EVA foaming products. It mainly uses some special chemical substances as raw materials. After-series It is processed by complex technology, so it is widely used in many industries at home and abroad. Its special material makes it have good plasticity and aesthetics, and it also has excellent safety index, green environmental protection and chemical corrosion resistance. . [0003] The main component of the EVA foam sheet material is ethylene-vinyl acetate. When the foaming rate of ethylene-vinyl acetate is high, the material will be deformed seriously, the mechanical properties will be significantly reduced, and t...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L51/06C08K5/14C08K3/34C08J9/10C08J9/00A43B13/04
CPCA43B13/04C08J9/0023C08J9/0061C08J9/0066C08J9/0095C08J9/103C08J2203/04C08J2323/08C08J2423/08C08J2451/06C08K3/34C08K5/14
Inventor 尹志贵
Owner 尹志贵
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