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Halogen-free flame retardant EVA foamed material and preparation method thereof

A foaming material and flame retardant technology, applied in the field of polymer materials and their preparation, can solve problems such as limitations, and achieve the effects of solving odor problems, improving stability, and improving EVA cross-linking efficiency

Inactive Publication Date: 2018-12-18
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the application in architectural decoration, rail transit interior decoration and vehicle interior decoration is limited.

Method used

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  • Halogen-free flame retardant EVA foamed material and preparation method thereof
  • Halogen-free flame retardant EVA foamed material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The halogen-free flame-retardant EVA foam material of the present embodiment is made of the following components by weight:

[0028] EVA resin (VA content 28%): 25kg, composite foaming agent: 5kg (AC foaming agent and auxiliary foaming agent ZnO are composed according to the weight ratio of 9:1), BIBP crosslinking agent: 0.4kg, composite lubricant: 0.6kg (stearic acid and zinc stearate are composed according to the weight ratio of 1:0.4), nitrogen and phosphorus compound compound: 12kg. The compound of nitrogen and phosphorus compounds is Fulimei-1090 halogen-free flame retardant purchased from Jiangsu Suli Fine Chemical Co., Ltd.

[0029] The preparation method of the above-mentioned halogen-free flame-retardant EVA foam material has the following steps:

[0030] (1) Pour the EVA resin, composite foaming agent, composite lubricant, crosslinking agent, and composite halogen-free flame retardant according to the formula into the mixer and mix at a low speed for 4 minute...

Embodiment 2～ Embodiment 6

[0035] The preparation method of the halogen-free flame-retardant EVA foam material of each example is the same as that of Example 1, the difference lies in the weight ratio of each component, see Table 1 for details.

[0036] Table 1: The formula ratio of embodiment 1~6

[0037]

[0038] The halogen-free flame-retardant EVA foam material prepared in Examples 1 to 6 was used to prepare a standard sample, and the flame-retardant performance, mechanical properties, and density of the standard sample were tested according to national standards. The test results are shown in Table 2 .

[0039] Table 2: The test results of the halogen-free flame-retardant EVA foam material prepared by the recipes of Examples 1-6

[0040] test performance

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Abstract

The invention provides a halogen-free flame retardant EVA foamed material and a preparation method thereof. The halogen-free flame retardant EVA foamed material is composed of the following componentsby weight: 100 parts of EVA resin (a VA content of 10%-40%), 8-20 parts of a composite foaming agent, 0.6-2.4 parts of a cross-linking agent, 1.2-4.0 parts of a composite lubricant and 35-70 parts ofa composite halogen-free flame retardant. The composite foaming agent is composed of an AC foaming agent and an auxiliary foaming agent ZnO according to a weight ratio of 9:1-7:1. The cross-linking agent is bis(tert-butylperoxy)diisopropyl benzene (BIPB). The composite lubricant is composed of stearic acid and zinc stearate according to a weight ratio of 1:0.3-1:0.6. And the composite halogen-free flame retardant is a complex of nitrogen-phosphorus compounds. The halogen-free flame retardant EVA foamed material has low smoke density, no toxicity and light specific gravity.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to a halogen-free flame-retardant EVA foam material and a preparation method thereof. Background technique [0002] EVA is ethylene-vinyl acetate copolymer. It is non-toxic, tasteless and odorless translucent particles with a density of 0.937g / cm 3 . Generally, the content of vinyl acetate (VA) is 5%-40%. Compared with polyethylene (PE), EVA reduces high crystallinity and improves toughness and impact resistance due to the introduction of vinyl acetate monomer into the molecular chain. , filler compatibility and heat sealing performance, are widely used in foamed shoe materials, functional shed films, packaging molds, hot melt adhesives, wires and cables and toys and other fields. [0003] At present, there are many kinds of modified EVA materials, which are mainly modified according to the application performance of the materials. If fillers (such as calciu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K13/02C08K5/14C08K5/09C08K5/098C08J9/10
CPCC08J9/0023C08J9/103C08J2323/08C08K5/09C08K5/098C08K5/14C08K13/02
Inventor 周健
Owner JIANGSU UNIV OF TECH