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Special organosilane crosslinked polyethylene material for rotational molding as well as preparation method and application thereof

A technology of silane cross-linking and polyethylene, which is applied in the field of silane cross-linking polyethylene rotomoulding special materials, can solve the problems of heat creep resistance, low temperature impact resistance, environmental stress cracking resistance, etc., and achieve outstanding wear resistance, good Good anti-permeation performance and low temperature toughness

Inactive Publication Date: 2011-02-09
苏州康斯坦普工程塑料有限公司
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Problems solved by technology

[0003] The invention aims at the deficiencies in heat creep resistance, low temperature impact resistance, environmental stress cracking resistance and swelling resistance existing in polyethylene for rotomolding, and provides a chemical modification of polyethylene High performance silane crosslinked polyethylene rotomoulding special material and its preparation method and application

Method used

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Embodiment Construction

[0009] A special material for silane crosslinked polyethylene rotomoulding according to the present invention, said silane crosslinked polyethylene rotomoulding special material consists of the following components by weight: 91-95% of special polyethylene, 0.5-1% of initiator, and 2-3% of branching agent, 0.5-1% of cross-linking catalyst, 1-2% of lubricating processing aid, and 1-2% of functional additive.

[0010] To make the modified polyethylene chemically exert its maximum effect, among the components of the silane cross-linked polyethylene rotomoulding special material: the special polyethylene adopts high-grade HDPE; the initiator is organic peroxide; the cross-linking grafting agent It is an organosilane; the crosslinking catalyst is an organotin catalyst; the lubricating processing aid is a mixture of organic fluorine and organic silicon, wherein the content of organic fluorine accounts for 0.5-1% of the total content, and the content of organic silicon accounts for 0....

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Abstract

The invention relates to a special organosilane crosslinked polyethylene material for rotational molding as well as a preparation method and an application thereof. The special organosilane crosslinked polyethylene material for the rotational molding is characterized by comprising the following components in weight ratio: 91-95% of special polyethylene, 0.5-1% of initiator, 2-3% of crosslinking grafting agent, 0.5-1% of crosslinking catalyst, 1-2% of lubrication processing aid and 1-2% of functional additive. The preparation method of the special organosilane crosslinked polyethylene material for the rotational molding comprises the following steps of: reacting and extruding; preparing a master material of the crosslinking catalyst; and pulverizing. The special organosilane crosslinked polyethylene material for the rotational molding, made of the raw materials by using the preparation method has great performance advantages in the aspects of mechanical strength, heat resistance, pressure resistance, corrosion resistance and creepage ressistanc, and can be used as a raw material for making rotational molding fuel tanks, chemical product containers, heat-resisting storage tanks, small-size yachts and the like.

Description

technical field [0001] The invention relates to a raw material for plastic products, in particular to a silane crosslinked polyethylene rotomoulding special material made by chemically modifying polyethylene, as well as a preparation method and application. Background technique [0002] In recent years, my country's rotomolding industry has developed rapidly, and there are dozens of rotomolding manufacturers all over the country. The types of rotomolding products produced by these manufacturers are increasing, and the application fields are becoming more and more extensive. However, compared with the advanced level of foreign developed countries, the gap is very obvious. In the early 1990s, there were more than 3,000 kinds of rotomolding products registered in the American Rotomolding Association, while China currently has only 40 kinds. Foreign rotomolding products have involved more than 30 industries. However, our country's rotational molding products only involve more th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/06C08K5/54C08F255/02
Inventor 姚兵
Owner 苏州康斯坦普工程塑料有限公司
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