LDPE composite flame-retardant plastic and preparation method thereof

A composite flame retardant and plastic technology, applied in the field of plastics, can solve the problems of life-threatening, unstable heating, and cause fire, and achieve excellent flame retardant performance, low density, and weight reduction.

Inactive Publication Date: 2013-09-11
SUZHOU NEW DISTRICT JIAHE PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, LDPE products are unstable when heated, and are easy to burn, causing fire and other hazards, threatening people's lives.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A flame-retardant plastic, comprising the following components in parts by weight: 40 parts of LDPE, 40 parts of EVA, 70 parts of aluminum hydroxide, 10 parts of red phosphorus, 30 parts of ammonium polyphosphate, 11 parts of pentaerythritol, 0.25 parts of DCP, coupling 3.5 parts of agent, 10 parts of benzyl methacrylate, 8 parts of methacrylic acid, 10 parts of dihydrodicyclopentadienyl acrylate, 10 parts of butadiene rubber, 1 part of paraffin wax, 7 parts of hydrated zinc borate, ten parts 10 parts of brominated diphenyl ethers. The coupling agent is bis(2,3-dibromopropyl)-fumarate.

[0015] The preparation method of the flame-retardant plastic includes the following steps: kneading each component in a plastic mixer at a temperature of 190°C, granulating, extruding with a twin-screw extruder, and cooling to form. The screw speed of the extruder is 26r / min.

Embodiment 2

[0017] A flame-retardant plastic, comprising the following components in parts by weight: 50 parts of LDPE, 50 parts of EVA, 75 parts of aluminum hydroxide, 12 parts of red phosphorus, 33 parts of ammonium polyphosphate, 13 parts of pentaerythritol, 0.31 parts of DCP, coupling 3.8 parts of agent, 13 parts of benzyl methacrylate, 10 parts of methacrylic acid, 11 parts of dihydrodicyclopentadienyl acrylate, 20 parts of butadiene rubber, 2 parts of paraffin wax, 8 parts of zinc borate hydrate, ten parts 12 parts of brominated diphenyl ethers. The coupling agent is ethyl acrylate.

[0018] The preparation method of the flame-retardant plastic includes the following steps: kneading each component in a plastic mixer at a temperature of 195°C, granulating, extruding with a twin-screw extruder, and cooling to form. The screw speed of the extruder is 28r / min.

Embodiment 3

[0020] A flame-retardant plastic, comprising the following components in parts by weight: 45 parts of LDPE, 45 parts of EVA, 73 parts of aluminum hydroxide, 11 parts of red phosphorus, 31 parts of ammonium polyphosphate, 12 parts of pentaerythritol, 0.28 parts of DCP, coupling 3.7 parts of benzyl methacrylate, 11 parts of benzyl methacrylate, 9 parts of methacrylic acid, 10.5 parts of dihydrodicyclopentadienyl acrylate, 15 parts of butadiene rubber, 1.5 parts of paraffin, 7.5 parts of zinc borate hydrate, ten parts 11 parts of brominated diphenyl ethers. The coupling agent is ethyl acrylate.

[0021] The preparation method of the flame-retardant plastic includes the following steps: kneading each component in a plastic mixer at a temperature of 193°C, granulating, extruding with a twin-screw extruder, and cooling to form. The screw speed of the extruder is 27r / min.

[0022] Below by the performance of the product that test test embodiment 1,2,3 makes:

[0023] ...

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Abstract

The invention discloses LDPE composite flame-retardant plastic comprising the following components, by weight, 40-50 parts of LDPE, 40-50 parts of EVA, 70-75 parts of aluminium hydroxide, 10-12 parts of amorphous phosphorus, 30-33 parts of ammonium polyphosphate, 11-13 parts of dipentaerythritol, 0.25-0.31 parts of DCP, 3.5-3.8 parts of a coupling agent, 10-13 parts of benzyl methacrylate, 8-10 parts of methacrylic acid, 10-11 parts of dihydro dicyclopentadienyl acrylate, 10-20 parts of butadiene rubber, 1-2 parts of paraffin, 7-8 parts of hydrated zinc borate, and 10-12 parts of polybrominated diphenylether. The flame-retardant plastic provided by the invention has the advantages of good mechanical performance and high thermal stability. The plastic has excellent flame-retarding performance reaching a V-0 level. The density of the plastic is low, such that plastic weight can be reduced, and cost can be reduced. The elongation rate of the plastic is high.

Description

technical field [0001] The invention relates to the field of plastics, in particular to an LDPE composite flame-retardant plastic and a preparation method thereof. Background technique [0002] As a widely used material, plastic is flammable due to the addition of plasticizers, etc., and melts at a slightly higher temperature, thus greatly reducing the safety of plastic use. The invention provides a flame-retardant plastic, which is not easy to burn, can reduce accidental fires, and improves the safety performance of plastic products. LDPE has a wide range of applications. It can be used to make heat-resistant parts around automobile engines, medical equipment and tableware that require boiling disinfection and high-pressure sterilization; it can also be used to make axle pedals and documents of automobiles that need to resist bending fatigue. Class covers, closures and various containers, etc. LDPE is widely used in the production of chemical pipelines, various storage ta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L9/00C08L51/00C08K13/02C08K3/22C08K3/32C08K5/053C08K5/06C08K3/38
Inventor 张卫蒋学功张美英
Owner SUZHOU NEW DISTRICT JIAHE PLASTIC
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