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Calcium sulfate whisker modified polystyrene composite material and preparation process thereof

A technology of calcium sulfate whiskers and polystyrene, which is applied in the field of polystyrene composite materials and its preparation technology, can solve the problems of poor heat resistance, low tensile strength of impact-resistant polystyrene, and limited use, and achieve tensile strength High tensile strength and good heat resistance

Active Publication Date: 2012-10-24
XIANGFU NEW BUILDING MATERIAL HUNAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, impact-resistant polystyrene has low tensile strength, poor heat resistance, and poor solvent resistance, which limit its application in some places

Method used

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  • Calcium sulfate whisker modified polystyrene composite material and preparation process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The raw material weight ratio of calcium sulfate whisker modified polystyrene composite material in this example: 100 parts of high-impact polystyrene (HIPS), 20 parts of calcium sulfate whisker, 0.2 part of primary antioxidant, 1010 of auxiliary antioxidant Agent DLTP 0.2 parts, lubricant Hst 2 parts, silane coupling agent KH550 1 part.

[0016] Preparation:

[0017] (1) Activate calcium sulfate whiskers and silane coupling agent KH550 in a high-speed mixer for 10 minutes to obtain modified calcium sulfate whiskers; the modified calcium sulfate whiskers have an aspect ratio of 13 and a diameter of 0.8 μm ;

[0018] (2) Add the impact-resistant polystyrene, main antioxidant 1010, auxiliary antioxidant DLTP, and lubricant Hst into a high-speed mixer, mix at 50°C for 7 minutes, and dry; obtain impact-resistant polystyrene A mixture of ethylene, primary antioxidant 1010, secondary antioxidant DLTP, lubricant Hst and modified calcium sulfate whiskers;

[0019] (3) The mi...

Embodiment 2

[0022] The raw material weight ratio of the calcium sulfate whisker modified polystyrene composite material in this example: 100 parts of high-impact polystyrene (HIPS), 30 parts of calcium sulfate whisker, 0.1 part of the main antioxidant, and 0.1 part of the auxiliary antioxidant Agent DLTP 0.1 parts, lubricant Hst 2 parts, silane coupling agent KH550 2 parts.

[0023] Preparation:

[0024] (1) Activate calcium sulfate whiskers and silane coupling agent KH550 in a high-speed mixer for 10 minutes to obtain modified calcium sulfate whiskers; the obtained calcium sulfate whiskers have an aspect ratio of 15 and a diameter of 1 μm;

[0025] (2) Add the impact-resistant polystyrene, main antioxidant 1010, auxiliary antioxidant DLTP, and lubricant Hst into a high-speed mixer, mix at 50°C for 7 minutes, and dry; obtain impact-resistant polystyrene A mixture of ethylene, primary antioxidant 1010, secondary antioxidant DLTP, lubricant Hst and modified calcium sulfate whiskers;

[00...

Embodiment 3

[0029] The raw material weight ratio of the calcium sulfate whisker modified polystyrene composite material in this example: 100 parts of high-impact polystyrene (HIPS), 35 parts of calcium sulfate whisker, 0.3 part of primary antioxidant, 1010 of auxiliary antioxidant Agent DLTP 0.3 parts, lubricant Hst 3 parts, silane coupling agent KH550 1 part.

[0030] Preparation:

[0031] (1) Activate calcium sulfate whiskers and silane coupling agent KH550 in a high-speed mixer for 10 minutes to obtain modified calcium sulfate whiskers; modified calcium sulfate whiskers have an aspect ratio of 20 and a diameter of 0.5 μm;

[0032] (2) Add the impact-resistant polystyrene, main antioxidant 1010, auxiliary antioxidant DLTP, and lubricant Hst into a high-speed mixer, mix at 50°C for 7 minutes, and dry; obtain impact-resistant polystyrene A mixture of ethylene, primary antioxidant 1010, secondary antioxidant DLTP, lubricant Hst and modified calcium sulfate whiskers;

[0033] (3) The mixt...

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Abstract

The invention discloses a calcium sulfate whisker modified polystyrene composite material and a preparation process thereof. The composite material is prepared from the following raw materials in parts by weight: 100 parts of impact resistant polystyrene, 15-45 parts of calcium sulfate whisker, 0.1-0.4 part of primary antioxidant 1010, 0.1-0.5 part of auxiliary antioxidant DLTP (dilauryl thiodipropionate), 1-4 parts of lubricant Hst and 1-4 parts of silane coupling agent KH550. The preparation method comprises the following steps of: activating the calcium sulfate whisker and the silane coupling agent KH550 for 8-12min in a high-speed mixing machine, and drying the obtained mixture; and fusing and granulating the mixture by a double-screw extruder. The calcium sulfate whisker modified polystyrene composite material disclosed by the invention has high tensile strength and good heat resistance and is especially suitable for manufacturing TV shells, precise instrument shells, vehicle interiors, instrument structures and the like.

Description

technical field [0001] The invention relates to a polystyrene composite material and a preparation process thereof, in particular to a calcium sulfate whisker-modified polystyrene composite material with high impact resistance and a preparation process thereof. Background technique [0002] High-impact polystyrene (HIPS) has excellent dielectric properties and electrical insulation properties, good moldability, high transparency, easy coloring, high rigidity, and a wide range of applications. However, impact polystyrene has low tensile strength, poor heat resistance, and poor solvent resistance, which limit its application in some places. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiency of the tensile strength of the existing impact-resistant polystyrene materials, and provide a calcium sulfate whisker-modified polystyrene composite material with high tensile strength and good heat resistance and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/00C08K9/06C08K7/08B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 刘珍如刘立文付桃梅杨志强宁勇鲁纪鸣
Owner XIANGFU NEW BUILDING MATERIAL HUNAN
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