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Preparation method of halogen-free flame-retarding polystyrene foam

A polystyrene foam, polystyrene technology, applied in the field of foam plastics, can solve the problems of inability to have good flame retardant function, poor high and low temperature resistance, etc., and achieve excellent high temperature resistance and flame retardant performance, strong impact resistance, mechanical Excellent performance

Inactive Publication Date: 2019-01-25
德清舒华泡沫座椅有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of poor high and low temperature resistance of foam materials in the prior art and the inability to better realize the flame retardant function, and to provide a foam material capable of preparing high and low temperature resistance, good weather resistance, and flame retardant function. A kind of preparation method of halogen-free flame-retardant polystyrene foam

Method used

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  • Preparation method of halogen-free flame-retarding polystyrene foam

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Effect test

Embodiment 1

[0034] A kind of preparation method of halogen-free flame-retardant polystyrene foam, described preparation method comprises the following steps:

[0035] (1) Preparation of silicone grafted polystyrene:

[0036] (1.1) Preparation of silicone-grafted polystyrene A component: take 100 parts of polystyrene masterbatch in parts by weight and place it in an open mixer, add 0.5 parts of vinyl-containing alkoxysilane and 0.02 parts of dicumyl peroxide, blended uniformly at 125°C, extruded and granulated at 140°C to obtain component A containing silicone, the vinyl-containing alkoxysilane is methyl Vinyldimethoxysilane;

[0037] (1.2) Preparation of silicone-grafted polystyrene B component: take 100 parts of polystyrene masterbatch according to parts by weight and place it in an open mixer, add 1 part of dibutyltin dilaurate and 0.5 part of Chromium acetylacetonate, after uniform blending at 125°C, extruded and granulated at 140°C to obtain component B containing organotin catalyst...

Embodiment 2

[0043] A kind of preparation method of halogen-free flame-retardant polystyrene foam, described preparation method comprises the following steps:

[0044](1) Preparation of silicone grafted polystyrene:

[0045] (1.1) Preparation of silicone-grafted polystyrene A component: take 100 parts of polystyrene masterbatch in parts by weight and place it in an open mill, add 3 parts of vinyl-containing alkoxysilane and 0.25 parts of dicumyl peroxide, blended uniformly at 140°C, extruded and granulated at 160°C to obtain component A containing silicone, the vinyl-containing alkoxysilane is ethylene Trimethoxysilane;

[0046] (1.2) Preparation of silicone-grafted polystyrene component B: take 100 parts of polystyrene masterbatch in parts by weight and place it in an open mixer, add 3 parts of dibutyltin dilaurate and 1.5 parts of Chromium acetylacetonate, after uniform blending at 140°C, extruded and granulated at 160°C to obtain component B containing organotin catalyst;

[0047] (1...

Embodiment 3

[0052] A kind of preparation method of halogen-free flame-retardant polystyrene foam, described preparation method comprises the following steps:

[0053] (1) Preparation of silicone grafted polystyrene:

[0054] (1.1) Preparation of silicone-grafted polystyrene component A: take 100 parts of polystyrene masterbatch in parts by weight and place it in an open mixer, add 1 part of vinyl-containing alkoxysilane and 0.15 parts of dicumyl peroxide, blended uniformly at 135°C, extruded and granulated at 145°C to obtain component A containing silicone, the vinyl-containing alkoxysilane is benzene Vinyldimethoxysilane;

[0055] (1.2) Preparation of silicone-grafted polystyrene B component: take 100 parts of polystyrene masterbatch in parts by weight and place it in an open mixer, add 2 parts of dibutyltin dilaurate and 1 part of Chromium acetylacetonate, after uniform blending at 135°C, extruded and granulated at 145°C to obtain component B containing organotin catalyst;

[0056] (...

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Abstract

The invention relates to the field of foam plastic and in particular relates to a preparation method of halogen-free flame-retarding polystyrene foam. The preparation method comprises the following steps: (1) preparing organic silicon grafted polystyrene: (1.1) preparing an organic silicon grafted polystyrene component A; (1.2) preparing an organic silicon grafted polystyrene component B; (1.3) compounding; (2) mixing materials; (3) pre-foaming; (4) curing to obtain the halogen-free flame-retarding polystyrene foam. By adopting the preparation method, the problems in the prior art that the high and low temperature resisting performance of a foam material is relatively low and a flame-retarding function cannot be released better are solved; the prepared halogen-free flame-retarding polystyrene foam has the following beneficial effects that (1) the high-temperature-resisting and flame-retarding performance is excellent; (2) a halogen-free flame-retarding function is realized, and oil stain harmful substances and environment pollution substances are not generated in a combustion process; (3) the mechanical properties are excellent and the anti-impact capability is strong.

Description

technical field [0001] The invention relates to the field of foam plastics, in particular to a preparation method of a halogen-free flame-retardant polystyrene foam. Background technique [0002] Polystyrene foam is made of polystyrene resin as the main body, adding foaming agent and other additives. It is currently the most widely used cushioning material. It has a closed-cell structure, low water absorption and excellent water resistance; low density, generally 0.015-0.03; good mechanical strength, excellent cushioning performance; good processability, easy to mold; good colorability, strong temperature adaptability , Excellent anti-radiation and other advantages, and high dimensional accuracy, uniform structure. Therefore, its share in the external wall insulation is very high. [0003] However, ordinary polystyrene foam is extremely flammable and emits styrene gas that pollutes the environment when burned. The maximum working temperature is only 120°C, and it often ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L51/00C08L83/04C08K3/36C08K3/22C08K3/26C08K7/26C08K5/521C08K3/34C08K3/32C08J9/14
CPCC08J9/0038C08J9/0061C08J9/0066C08J9/0071C08J9/0095C08J9/141C08J2203/14C08J2325/06C08J2451/00C08J2483/04C08K3/34C08K3/36C08K5/521C08K7/26C08K2003/2224C08K2003/2227C08K2003/2241C08K2003/265C08K2003/323C08K2201/011
Inventor 卢伟蔡盼盼
Owner 德清舒华泡沫座椅有限公司
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