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A kind of halogen-free flame-retardant resin and preparation method thereof

A flame retardant resin and flame retardant technology, which is applied in the field of halogen-free flame retardant resin and its preparation, can solve the problems of decreased mechanical properties and large amount of flame retardant, and achieve good mechanical properties, good flame retardancy and stability. high effect

Active Publication Date: 2018-10-09
SHENZHEN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above technical problems, the present invention discloses a halogen-free flame-retardant resin and its preparation method, which solves the problem that the existing flame-retardant polypropylene obtained by using intumescent flame retardants has a large amount of flame retardants, and at the same time leads to a decrease in mechanical properties. problems, the halogen-free flame-retardant plastics using the technical solution of the present invention have the advantages of good flame retardancy, excellent mechanical properties, and high stability

Method used

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  • A kind of halogen-free flame-retardant resin and preparation method thereof

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Effect test

Embodiment 1

[0026] A halogen-free flame-retardant polypropylene resin, which contains components and their weight percentages: 67.95% of polypropylene, 25% of intumescent flame retardant, 5% of EPDM toughening agent, 0.05% of cross-linking agent DCP, cross-linking aid Joint agent methyl methacrylate 0.5%, antioxidant 0.5%, dispersive lubricant EBS (N,N'-ethylene bisstearamide) 0.5%, dispersive lubricant PE wax 0.5%; wherein, the expansion resistance The fuel is composed of ammonium polyphosphate, melamine and pentaerythritol, and the weight ratio of ammonium polyphosphate, melamine and pentaerythritol is 3:1:0.5.

[0027] The halogen-free flame-retardant polypropylene resin is prepared by the following steps:

[0028] Step A: first mix EPDM in a double-roll mill and cover the rolls, then add intumescent flame retardant, cross-linking agent and cross-linking auxiliary agent to mix evenly, then cut the material and cut it into granules for later use.

[0029] Step B: Mix the kneaded flame ...

Embodiment 2

[0032]A halogen-free flame-retardant polypropylene resin, which contains components and their weight percentages: polypropylene 62.95%, intumescent flame retardant 30%, butadiene rubber 5%, cross-linking agent DCP 0.05%, cross-linking assistant Agent ethyl methacrylate 0.5%, antioxidant 0.5%, dispersion lubricant EBS 0.5%, dispersion lubricant PE wax 0.5%. Wherein, the composition of the intumescent flame retardant is silane-coated ammonium polyphosphate, melamine pyrophosphate and dipentaerythritol, and the weight ratio of silane-coated ammonium polyphosphate, melamine pyrophosphate and dipentaerythritol is 2:1:0.8.

[0033] The halogen-free flame-retardant polypropylene resin is prepared by the following steps:

[0034] Step A: first knead the butadiene rubber in a two-roll mill and cover the rolls, then add intumescent flame retardant, cross-linking agent and cross-linking auxiliary agent and knead evenly, then cut the material and cut it into granules for later use.

[00...

Embodiment 3

[0038] A halogen-free flame-retardant polypropylene resin, which contains components and their weight percentages: polypropylene 57.95%, intumescent flame retardant 35%, SEBS 5%, cross-linking agent DCP 0.05%, auxiliary cross-linking agent acrylic acid Ethyl ester 0.5%, antioxidant 0.5%, dispersing lubricant EBS 0.5%, dispersing lubricant liquid paraffin 0.5%. Wherein, the composition of the intumescent flame retardant is ammonium polyphosphate coated with melamine resin, melamine polyphosphate and tripentaerythritol, and the weight ratio of the three is 4:1:0.3.

[0039] The halogen-free flame-retardant polypropylene resin is prepared by the following steps:

[0040] Step A: First, mix the natural rubber in a two-roll mill and cover the rolls, then add intumescent flame retardant, cross-linking agent and cross-linking auxiliary agent and mix evenly, then cut the material and cut it into granules for later use.

[0041] Step B: Mix the kneaded flame retardant masterbatch with...

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Abstract

The invention provides halogen-free flame retardant resin and a preparation method thereof. The halogen-free flame retardant resin is prepared from, by weight, 50%-80% of thermoplastic matrix resin, 15%-35% of expansion flame retardant, 3%-15% of flexibilizer containing vinyl, 0.01%-1% of cross-linking agent, 0.5%-1% of auxiliary cross-linking agent, 0.2%-1% of antioxygen and 0.2%-1% of dispersed lubricant. According to the halogen-free flame retardant resin, compared with non-crosslinked homogeneous flame retardant resin, due to the fact that the halogen-free flame retardant resin is of a mico-crosslinking structure, good flame resistance can further be achieved under the situation that the dosage of the flame retardant is low; when the dosage of the flame retardant is large, the good mechanical property can still be maintained, and the halogen-free flame retardant resin has the advantages of being resistant to migration, high in stability and the like.

Description

technical field [0001] The invention belongs to the technical field of halogen-free flame-retardant materials, and in particular relates to a halogen-free flame-retardant resin and a preparation method thereof. Background technique [0002] During the development of nearly a hundred years, plastics and plastic products have brought great contributions and infinite convenience to human production and life. However, since most plastics are flammable products, the production of plastic parts with flame-retardant requirements limit. In order to meet the flame retardant requirements, the current domestic market mainly uses flame retardants compounded with halogen-containing organic compounds and antimony trioxide to produce flame retardant plastics. In recent years, brominated flame retardants have been plagued by dioxins. At the same time, bromine-antimony system flame-retardant polymer materials will generate a large amount of smoke and corrosive gases during pyrolysis and com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L51/04C08L9/00C08L23/06C08L23/16C08L53/02C08L91/06C08K3/32C08K5/053C08K5/101C08K5/103C08K5/20C08K5/3492C08K5/52C08K9/10C08K13/02C08K13/06
CPCC08L23/12C08L25/06C08L2201/02C08L2201/22C08L2205/02C08L2205/03C08L23/16C08L23/06C08K13/02C08K5/20C08K2003/323C08K5/34922C08K5/053C08K5/101C08L9/00C08K13/06C08K9/10C08K5/5205C08L53/025C08L91/06C08L51/04C08K5/103C08L53/02
Inventor 罗超云徐玲肖望东林峰徐志娟左建东林雪春罗大为
Owner SHENZHEN POLYTECHNIC
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