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Calcium sulfate whisker modified high density polyethylene composite material and preparation method thereof

A high-density polyethylene and calcium sulfate whisker technology, which is applied in the field of calcium sulfate whisker modified high-density polyethylene composite materials and its preparation, can solve the problem of poor environmental stress cracking resistance and low mechanical properties of HDPE, which limit the wide range of HDPE. Application and other issues, to achieve the effect of good toughness, high strength, and good stress cracking resistance

Active Publication Date: 2012-11-28
XIANGFU NEW BUILDING MATERIAL HUNAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, HDPE is a soft and tough polymer. Except for tensile strength and high-temperature torsional strength, the absolute values ​​of other mechanical properties are relatively low in plastic materials; and HDPE has poor environmental stress cracking resistance, which limits HDPE. wide application of

Method used

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  • Calcium sulfate whisker modified high density polyethylene composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0015] The calcium sulfate whisker modified high-density polyethylene composite material of this embodiment is made of the following raw materials in parts by weight: 100 parts of HDPE, 10 parts of calcium sulfate whiskers, 20 parts of LLDPE, 10 parts of CPE, 0.1 part of antioxidant 1010, 1 part of lubricant Hst, 1 part of titanate coupling agent.

[0016] Preparation:

[0017] (1) Add calcium sulfate whiskers and titanate coupling agent into a high-speed mixer and mix for 10 minutes to obtain modified calcium sulfate whiskers; modified calcium sulfate whiskers have an aspect ratio of 19 and an average diameter of 1.6 ;

[0018] (2) Add the high-density polyethylene, linear low-density polyethylene, chlorinated polyethylene, antioxidant 1010, and lubricant Hst into a high-speed mixer, and mix at 70°C for 7 minutes to obtain high-density polyethylene, linear A mixture of low-density polyethylene, chlorinated polyethylene, antioxidant 1010, lubricant Hst and modified calcium ...

Embodiment 2

[0022] The calcium sulfate whisker modified high-density polyethylene composite material in this embodiment is made of the following raw materials in parts by weight: 100 parts of HDPE, 15 parts of calcium sulfate whisker, 20 parts of LLDPE, 20 parts of CPE, 0.1 part of antioxidant 1010 , 1 part of lubricant Hst, 2 parts of titanate coupling agent.

[0023] Preparation:

[0024] (1) Add calcium sulfate whiskers and titanate coupling agent into a high-speed mixer and mix for 10 minutes to obtain modified calcium sulfate whiskers; modified calcium sulfate whiskers have an aspect ratio of 20 and an average diameter of 1.5 ;

[0025] (2) Add the high-density polyethylene, linear low-density polyethylene, chlorinated polyethylene, antioxidant 1010, and lubricant Hst into a high-speed mixer, and mix at 70°C for 7 minutes to obtain high-density polyethylene, linear A mixture of low-density polyethylene, chlorinated polyethylene, antioxidant 1010, lubricant Hst and modified calcium...

Embodiment 3

[0029] In this example, the calcium sulfate whisker modified high-density polyethylene composite material is made of the following raw materials in parts by weight: 100 parts of HDPE, 20 parts of calcium sulfate whisker, 10 parts of LLDPE, 10 parts of CPE, 0.1 part of antioxidant 1010 , 1 part of lubricant Hst, 3 parts of titanate coupling agent.

[0030] Preparation:

[0031] (1) Add calcium sulfate whiskers and titanate coupling agent to a high-speed mixer and mix for 10 minutes to obtain modified calcium sulfate whiskers; modified calcium sulfate whiskers have an aspect ratio of 21 and an average diameter of 1.2 ;

[0032] (2) Add the high-density polyethylene, linear low-density polyethylene, chlorinated polyethylene, antioxidant 1010, and lubricant Hst into a high-speed mixer, and mix at 70°C for 7 minutes to obtain high-density polyethylene, linear A mixture of low-density polyethylene, chlorinated polyethylene, antioxidant 1010, lubricant Hst and modified calcium sul...

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Abstract

The invention relates to a calcium sulfate whisker modified high density polyethylene composite material and a preparation method thereof. The calcium sulfate whisker modified high density polyethylene composite material is prepared from the following raw materials: 100 parts by weight of high density polyethylene, 10-40 parts by weight of calcium sulfate whiskers, 10-20 parts by weight of linearlow density polyethylene, 10-20 parts by weight of chlorinated polyethylene, 0.1-0.3 parts by weight of an antioxidant 1010, 1-4 parts by weight of a lubricant Hst, and 1-3 parts by weight of a titanate coupling agent. The preparation method of the composite material comprises the following steps: 1, adding the calcium sulfate whiskers and the titanate coupling agent into a high speed mixer to mix for 5-12 min; 2, mixing other raw materials with modified calcium sulfate whiskers in the high speed mixer for 5-10 min; and 3, carrying out extrusion granulation on a mixture obtained in step 2 by a twin screw. The calcium sulfate whisker modified high density polyethylene composite material of the present invention which has the advantages of high strength, good toughness and good stress cracking resistance is especially suitable for various places needing high strength materials.

Description

technical field [0001] The invention relates to a high-density polyethylene composite material and a preparation method thereof, in particular to a calcium sulfate whisker modified high-density polyethylene composite material and a preparation method thereof. Background technique [0002] Polyethylene is currently the largest and most widely used plastic variety. The high crystallinity of high-density polyethylene (HDPE) determines its high density, which makes it have excellent tensile strength, high temperature twist strength, good viscosity and chemical stability. However, HDPE is a soft and tough polymer. Except for tensile strength and high-temperature torsional strength, the absolute values ​​of other mechanical properties are relatively low in plastic materials; and HDPE has poor environmental stress cracking resistance, which limits HDPE. wide application. Contents of the invention [0003] The technical problem to be solved by the present invention is to ove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L23/08C08L23/28C08K13/06C08K7/08C08K3/30B29C47/92B29C48/92
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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