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High-toughness and high-elasticity expandable polystyrene and preparation method thereof

An expandable polystyrene and high-density polyethylene technology, applied in the field of foamed plastics, can solve the problems of toughness and aging resistance that cannot meet actual needs, increase production costs, etc., achieve easy control, save energy, improve The effect of rebound and thermal insulation properties

Inactive Publication Date: 2015-05-06
芜湖市京桥精密智造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Expandable polystyrene particles often have toughness and aging resistance that cannot meet actual needs
[0003] CN101092462 discloses a kind of expandable polystyrene particles and its preparation method. This patent specifically discloses the preparation method of producing flame-retardant EPS with environmental protection performance, wherein the amount of desalted water is 100-130 parts, and the amount of styrene is 90 -110 parts, the desalted water used needs special processing, which undoubtedly increases the production cost, and this production method is only used to produce flame-retardant EPS, and the production method has certain limitations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A high-toughness and high-elasticity expandable polystyrene proposed by the present invention, its raw material comprises by weight: 100 parts of styrene, 20 parts of ethylene-vinyl acetate copolymer, 15 parts of high-density polyethylene, 150 parts of water, over 0.5 parts of dibenzoyl oxide, 0.05 parts of tert-butyl peroxybenzoate, 0.15 parts of activated calcium phosphate, 0.2 parts of modified titanium dioxide, 0.2 parts of hydroxyethyl cellulose, 2 parts of pull-off powder, 0.15 parts of defoamer, 7 parts of foaming agent; Wherein foaming agent is made of n-pentane and isopentane in a weight ratio of 4.5:1;

[0020] During the preparation of the modified titanium dioxide, add 0.8 parts of aluminum-zirconium coupling agent TL-4 into 52 parts of acetone and stir evenly by weight, then add 96 parts of nano-titanium dioxide for electromagnetic stirring at a speed of 5700 rpm, and then keep warm in a water bath for 23 minutes , the temperature kept in a water bath was 7...

Embodiment 2

[0022] A high-toughness and high-elasticity expandable polystyrene proposed by the present invention, its raw materials include by weight: 100 parts of styrene, 27 parts of ethylene-vinyl acetate copolymer, 12 parts of high-density polyethylene, 165 parts of water, over 0.3 parts of dibenzoyl oxide, 0.08 parts of tert-butyl peroxybenzoate, 0.08 parts of activated calcium phosphate, 0.4 parts of modified titanium dioxide, 0.12 parts of hydroxyethyl cellulose, 6 parts of pull-off powder, 0.07 parts of defoamer, 11 parts of blowing agent;

[0023] In the preparation process of modified titanium dioxide, add 0.4 parts of aluminum-zirconium coupling agent TL-4 into 55 parts of acetone and stir evenly according to parts by weight, then add 95 parts of nano-titanium dioxide for electromagnetic stirring, the electromagnetic stirring speed is 6000rpm, and then keep warm for 15 minutes in a water bath , the temperature kept in a water bath was 71° C., and then vacuum-dried to obtain mod...

Embodiment 3

[0025] A high-toughness and high-elasticity expandable polystyrene proposed by the present invention, its raw material comprises by weight: 100 parts of styrene, 25 parts of ethylene-vinyl acetate copolymer, 13 parts of high-density polyethylene, 160 parts of water, over 0.35 parts of dibenzoyl oxide, 0.07 parts of tert-butyl peroxybenzoate, 0.1 parts of activated calcium phosphate, 0.35 parts of modified titanium dioxide, 0.15 parts of hydroxyethyl cellulose, 5 parts of pull-off powder, 0.1 parts of defoamer, 10 parts of foaming agent; Wherein foaming agent is made of n-pentane and isopentane in a weight ratio of 5:1;

[0026] During the preparation of modified titanium dioxide, add 1 part of aluminum-zirconium coupling agent TL-4 into 50 parts of acetone and stir evenly, and then add 97 parts of nano-titanium dioxide for electromagnetic stirring at a speed of 5500 rpm, followed by water bath for 20 minutes , the temperature of the water bath insulation is 70° C., and then va...

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Abstract

The invention discloses high-toughness and high-elasticity expandable polystyrene which comprises the following raw materials in parts by weight: 100 parts of styrene, 20-30 parts of an ethylene-vinyl acetate copolymer, 10-15 parts of high-density polyethylene, 150-170 parts of water, 0.2-0.5 parts of dibenzoyl peroxide, 0.05-0.1 parts of tert-butyl peroxybenzoate, 0.05-0.15 parts of activated calcium phosphate, 0.2-0.5 parts of modified titanium dioxide, 0.1-0.2 parts of hydroxyethyl cellulose, 2-8 parts of nekal, 0.05-0.15 parts of a defoamer and 7-12 parts of a foamer. The invention further discloses a preparation method for the high-toughness and high-elasticity expandable polystyrene. The high-toughness and high-elasticity expandable polystyrene is high in toughness, high in resilience, excellent in heat-retaining property, corrosion resistance, hardness, tensile strength and creep property, and good in water resistance, wear resistance and cold resistance.

Description

technical field [0001] The invention relates to the technical field of foamed plastics, in particular to a high-toughness and high-elasticity expandable polystyrene and a preparation method thereof. Background technique [0002] In 1949, BASF invented expandable polystyrene EPS. Because of its excellent properties such as heat insulation, heat preservation, light weight and moisture resistance, it is widely used in the construction industry and packaging fields, especially for walls and roofs. heat insulation. With the vigorous development of green buildings, environmental protection and energy saving in recent years, the demand for EPS in the construction industry has grown linearly. Expandable polystyrene particles often have toughness and aging resistance that cannot meet actual needs. [0003] CN101092462 discloses a kind of expandable polystyrene particles and its preparation method. This patent specifically discloses the preparation method of producing flame-retardan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L23/08C08L23/06C08L1/28C08K9/04C08K3/22C08K3/32C08K5/42C08J9/14
Inventor 彭其周
Owner 芜湖市京桥精密智造有限公司
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