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Silane-grafted chlorinated polyethylene, method for producing same, and insulated wire and cable using the polyethylene

A technology of chlorinated polyethylene and silane grafting, applied in the direction of insulated cables, insulators, insulated conductors, etc., can solve the problems of volatile, highly irritating odor, and difficult to handle

Active Publication Date: 2019-08-09
HITACHI METALS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, vinylsilane has a problem of being difficult to handle due to its high volatility and characteristic pungent odor.

Method used

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  • Silane-grafted chlorinated polyethylene, method for producing same, and insulated wire and cable using the polyethylene
  • Silane-grafted chlorinated polyethylene, method for producing same, and insulated wire and cable using the polyethylene
  • Silane-grafted chlorinated polyethylene, method for producing same, and insulated wire and cable using the polyethylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] In this example, a peroxide addition step, a grafting step, and a filler addition step were sequentially performed to prepare a chlorinated polyethylene composition containing silane-grafted chlorinated polyethylene.

[0090] [Adding process of peroxide]

[0091] First, using an 8-inch roll machine, 6 parts by mass of hydrotalcite as a stabilizer, 2 parts by mass of epoxidized soybean oil as a stabilizer, and polyvinyl chloride as a lubricant were added to 100 parts by mass of powdery chlorinated polyethylene. A compound A was prepared by kneading 3 parts by mass of ethylene wax. To this composite A, dicumyl peroxide as a peroxide was added so as to be 0.1 parts by mass with respect to 100 parts by mass of chlorinated polyethylene, and kneaded. Thereafter, the sheet formed from the kneaded mixture was pelletized into a 5 mm square shape to obtain pellets. Then, in order to prevent the pellets from sticking to each other, the pellets were covered with talc. In additio...

Embodiment 2

[0105]In Example 2, as shown in Table 1, the type of silane compound was changed to 3-methacryloxypropyltriethoxysilane, and the amount added was Except that 3.92 mass parts, it carried out similarly to Example 1, and prepared the chlorinated polyethylene composition.

Embodiment 3、4

[0107] In Examples 3 and 4, as shown in Table 1, the addition amount of the peroxide was increased, and the ratio (x / 2αy) of the radicals generated by the silane compound to the peroxide was changed. 1 A chlorinated polyethylene composition was prepared in the same manner. In Example 3, the addition amount of peroxide was made into 0.5 mass parts, and the ratio was made into 3.7. In Example 4, the addition amount of peroxide was made into 1.0 mass parts, and the ratio was made into 1.8.

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Abstract

The present invention provides a silane-grafted chlorinated polyethylene, its production method, insulated wires and cables using the polyethylene. The silane-grafted chlorinated polyethylene has a high degree of crosslinking. It is obtained by grafting and copolymerizing silane. The invention provides a kind of silane grafted chlorinated polyethylene, which utilizes peroxide to have 2 C=C(CH 3 )‑CO‑represented methacryloyl silane compound graft-copolymerized in chlorinated polyethylene, the number of moles of the silane compound is x, the number of moles of the peroxide is y, and the number of moles of the peroxide is When the number of contained oxygen and oxygen bonds is α, x / 2αy is not less than 1.5 and not more than 20.0, and the gel fraction after crosslinking is not less than 60%.

Description

technical field [0001] The present invention relates to silane-grafted chlorinated polyethylene, its production method, and insulated wires and cables using the polyethylene. Background technique [0002] Chlorinated polyethylene is one of thermoplastic elastomers obtained by reacting polyethylene as a raw material with chlorine by an aqueous suspension method or the like. Chlorinated polyethylene has a wide range of properties such as flexibility, weather resistance, oil resistance, chemical resistance, flame retardancy, heat resistance, abrasion resistance, etc., and is widely used to form outer coverings of cables, etc. (hereinafter, also referred to as for the sheath) material. [0003] It is generally known that, when the sheath is formed of chlorinated polyethylene, after the chlorinated polyethylene is extruded, the chlorinated polyethylene is crosslinked. As a crosslinking method, silane crosslinking using a silane compound (silane coupling agent) is widely perform...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F255/02H01B3/44H01B7/02H01B7/17
CPCC08F255/023H01B3/441C08F230/085
Inventor 芦原新吾青山贵矢崎浩贵
Owner HITACHI METALS LTD