Polyvinyl chloride/sulfonated cis-butadiene rubber and preparation method thereof

A technology of sulfonated butadiene rubber and polyvinyl chloride, which is applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of poor cold resistance, easy hardening of materials, and suboptimal low-temperature performance, and achieve compatibility improvement , the effect of improving cold resistance

Active Publication Date: 2011-08-31
JIANGSU HENGFENG CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyvinyl chloride also has the disadvantages of poor cold resistance, and the material is easy to harden at low temperatures.
[0003] In order to improve the cold resistance and low temperature flexibility of polyvinyl chloride, people add nitrile rubber to polyvinyl chloride, that is, polyvinyl chloride / nitrile rubber composition, so that the cold resistance of polyvinyl chloride; low temperature flexibility can be improved, but Since the low-temperature performance of nitrile rubber itself is not optimal among general-purpose rubbers, it is not suitable for occasions with high low-temperature requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A polyvinyl chloride / sulfonated butadiene rubber, the product includes polyvinyl chloride, dioctyl phthalate, composite stabilizer, lubricant, filler, modifier and antioxidant and sulfonated butadiene rubber, The polyvinyl chloride is 100 parts by weight, dioctyl phthalate is 48 parts by weight, composite stabilizer is 4 parts by weight, lubricant is 2 parts by weight, filler is 30 parts by weight, modifier and antioxidant It is 1.5 parts by weight; the sulfonated butadiene rubber accounts for 15%-20% of the total weight of polyvinyl chloride / sulfonated butadiene rubber. Based on polyvinyl chloride, dioctyl phthalate, compound stabilizer, lubricant, filler, modifier, antioxidant and sulfonated butadiene rubber as 100%.

[0025] The composite stabilizer is calcium zinc stabilizer, barium zinc stabilizer, lead salt stabilizer or a combination in any ratio.

[0026] The lubricant is paraffin, stearic acid, hard barium, hard lead or a combination in any ratio.

[0027] Mo...

Embodiment 2

[0029] A preparation method of polyvinyl chloride / sulfonated butadiene rubber, comprising the following steps:

[0030] a) the polyvinyl chloride of 100 parts by weight, the compound stabilizer of 48 parts by weight, the lubricant of 2 parts by weight, the modifying agent of 1.5 parts by weight and antioxidant are mixed at high speed for 5-20 seconds, and the preferred mixing time is 10 seconds;

[0031] b) continue to add 48 parts by weight of dioctyl phthalate (DOP), mix at high speed for 2-10 minutes, preferably the mixing time is 5 minutes;

[0032] c) Continue to add 30 parts by weight of filler to continue mixing, and when the material temperature in the high-speed mixing equipment reaches 95°C, the high-speed mixing equipment discharges;

[0033] d) Putting the above-mentioned materials discharged from the high-speed mixing equipment into a two-roller plastic refining machine to plasticize into sheets;

[0034] e) Add the raw material of sulfonated butadiene rubber to ...

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Abstract

The invention relates to the field of electric wire and cable material manufacture, in particular to a polyvinyl chloride / sulfonated cis-butadiene rubber and a preparation method thereof. The polyvinyl chloride / sulfonated cis-butadiene rubber has excellent cold resistance and low temperature flexibility. In the method, the sulfonated cis-butadiene rubber is added to improve the cold resistance and the low temperature flexibility of polyvinyl chloride. The cis-butadiene rubber is the rubber with the best low temperature performance, the brittle point is 110 DEG C below zero which is far lower than that of 35 DEG C below zero of acrylonitrile-butadiene rubber, and the low temperature resilience of the cis-butadiene rubber is the best in conventional rubber. However, the cis-butadiene rubberis non-polar rubber and has poor intermiscibility with the polyvinyl chloride, and sulfonate polar groups are introduced into molecular chains after the sulfonation reaction of the cis-butadiene rubber, so the intermiscibility between the cis-butadiene rubber and the polyvinyl chloride is greatly improved to form an even blending system.

Description

technical field [0001] The invention relates to the field of wire and cable material manufacturing, in particular to polyvinyl chloride / sulfonated butadiene rubber and a preparation method thereof. The composition can improve the cold resistance and low-temperature flexibility of polyvinyl chloride plastics. Background technique [0002] Polyvinylchloride (PVC) is a general-purpose plastic with excellent comprehensive properties. It has the advantages of low price, flame retardancy, and good aging brittleness. It can be made into various soft, hard, and semi-rigid plastics. Widely used in the cable industry. However, polyvinyl chloride also has the disadvantages of poor cold resistance, and the material is easy to harden at low temperatures. [0003] In order to improve the cold resistance and low temperature flexibility of polyvinyl chloride, people add nitrile rubber to polyvinyl chloride, that is, polyvinyl chloride / nitrile rubber composition, so that the cold resistance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L15/00C08K5/12H01B3/44
Inventor 邰锡峰蒋辉张建康蒋舟山姚建强
Owner JIANGSU HENGFENG CABLE
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