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Fire-retardant plastic and preparation method thereof

A technology of flame retardant plastics and flame retardants, which is applied in the field of flame retardant plastics and its preparation, can solve problems such as uneven dispersion of metal oxides and affect the flame retardant effect, and achieve good market prospects, good flame retardant effect, and good barrier sexual effect

Inactive Publication Date: 2019-03-08
刘景章
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, nitrogen-phosphorus flame retardants have a great negative impact on the mechanical properties of plastic products. The flame retardant effect of metal oxide composite flame retardants is good, but the flame retardant effect is often affected by the uneven dispersion of metal oxides.

Method used

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  • Fire-retardant plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In the embodiment of the present invention, a flame-retardant plastic includes the following raw materials in parts by weight: 80 parts of polyethylene, 8 parts of polypropylene, 10 parts of polyphenylene sulfide, 6 parts of modified mica powder, and 10 parts of modified calcium carbonate , 12 parts of montmorillonite, 6 parts of diatomite, 0.2 part of coupling agent, 10 parts of toughening agent, 0.1 part of ultraviolet absorber, 2 parts of sodium phytate, and 0.5 part of flame retardant.

[0024] Wherein, the preparation method of the modified mica powder is as follows: the mica powder is roasted at a temperature of 400° C. for 2 hours, and the mica powder after roasting is mixed with γ-aminopropyltriethoxysilane according to a mass ratio of 20:1. , add 8 times of water and ultrasonically disperse for 20min, the ultrasonic frequency is 40KHz, and the ultrasonic power is 200W to obtain a mixed solution A, add its total mass of 0.1% zinc borate and 0.2% ammonium polyphos...

Embodiment 2

[0036] In the embodiment of the present invention, a flame-retardant plastic includes the following raw materials in parts by weight: 85 parts of polyethylene, 9 parts of polypropylene, 12 parts of polyphenylene sulfide, 7 parts of modified mica powder, and 11 parts of modified calcium carbonate , 13 parts of montmorillonite, 7 parts of diatomite, 0.4 part of coupling agent, 12 parts of toughening agent, 0.2 part of ultraviolet absorber, 3 parts of sodium phytate, and 1 part of flame retardant.

[0037] Wherein, the preparation method of the modified mica powder is as follows: the mica powder is roasted at a temperature of 450° C. for 3 hours, and the mica powder after roasting is mixed with γ-aminopropyltriethoxysilane according to a mass ratio of 20:1. , add 9 times of water and ultrasonically disperse for 20min, the ultrasonic frequency is 40KHz, and the ultrasonic power is 250W to obtain a mixed solution A, add its total mass of 0.1% zinc borate and 0.2% ammonium polyphosph...

Embodiment 3

[0049] In the embodiment of the present invention, a flame-retardant plastic includes the following raw materials in parts by weight: 90 parts of polyethylene, 10 parts of polypropylene, 15 parts of polyphenylene sulfide, 9 parts of modified mica powder, and 12 parts of modified calcium carbonate , 14 parts of montmorillonite, 8 parts of diatomite, 0.5 parts of coupling agent, 14 parts of toughening agent, 0.3 parts of ultraviolet absorber, 4 parts of sodium phytate, and 1.5 parts of flame retardant.

[0050] Wherein, the preparation method of the modified mica powder is as follows: the mica powder is roasted at a temperature of 450° C. for 4 hours, and the mica powder after roasting is mixed with γ-aminopropyltriethoxysilane according to a mass ratio of 20:1. , add 9 times of water and ultrasonically disperse for 25min, the ultrasonic frequency is 45KHz, and the ultrasonic power is 300W to obtain a mixed solution A, add its total mass of 0.2% zinc borate and 0.3% ammonium poly...

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Abstract

The invention discloses a fire-retardant plastic and relates to the technical field of high-polymer materials. The fire-retardant plastic solves the problem of influence of non-uniform dispersion of existing metal oxides on fire-retardant effects. The fire-retardant plastic is composed of raw materials including polyethylene, polypropylene, polyphenylene sulfide, modified mica powder, modified calcium carbonate, montmorillonite, diatomite, coupling agent, flexibilizer, ultraviolet absorber, sodium phytate and fire-retardant agent. The invention also discloses a preparation method of the fire-retardant plastic. The prepared fire-retardant plastic is high in oxygen index but low in smoke density; by means of the modified mica powder, the modified calcium carbonate, the diatomite and the coupling agent, the flexibilizer, the ultraviolet absorber and the fire-retardant agent can be uniformly dispersed into the fire-retardant plastic along with filling of the modified mica powder, the modified calcium carbonate and the diatomite to further improve the fire-retardant performance; the sodium phytate and the montmorillonite can achieve good synergistic effects, the sodium phytate can modify the montmorillonite to endow the montmorillonite with thermal stability and compressive strength. Therefore, the fire-retardant plastic has a good market prospect.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a flame-retardant plastic and a preparation method thereof. Background technique [0002] Plastic is a high molecular compound polymerized by addition polymerization or polycondensation reaction with monomer as raw material. It is commonly known as plastic or resin. It can freely change its composition and shape. , Colorants and other additives. The main component of plastic is resin. The term resin was originally named after the lipids secreted by animals and plants, such as rosin, shellac, etc. Resin refers to a polymer compound that has not been mixed with various additives. Resin accounts for about 40% to 100% of the total weight of the plastic. The basic properties of plastics are mainly determined by the nature of the resin, but additives also play an important role. Some plastics are basically composed of synthetic resins, with no or few additives, such as pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L81/02C08K13/06C08K9/06C08K3/34C08K3/32C08K9/04C08K3/26C08K7/26
CPCC08L23/06C08K2003/265C08K2003/323C08L2201/02C08L2201/08C08L2205/03C08L23/12C08L81/02C08K13/06C08K9/06C08K3/34C08K3/32C08K9/04C08K3/26C08K7/26
Inventor 刘景章
Owner 刘景章
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