Polyvinyl chloride elastomer formula for flame-retarded mining flexible cable and its processing method

A polyvinyl chloride, processing technology, applied in the direction of insulating cables, cables, conductors, etc., can solve the problems of electrical cracking, sticky and black copper wires, etc., and achieve the effect of simplifying the processing procedures

Inactive Publication Date: 2005-10-05
JIANGWAN SPECIAL CABLE SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention overcomes the defects that the copper wire in the rubber cable is easy to be sticky and black and may cause electrical cracking, and provides a formula and processing technology of a polyvinyl chloride elastomer for a flame-retardant mine flexible cable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] High Polymerization PVC 100 Low Polymerization PVC 20

[0027] Dioctyl phthalate 90 Lead sulfate tribasic 3

[0028] Dibasic lead phosphite 2 dibasic lead stearate 0.5

[0029] Antimony trioxide 10 Molybdenum oxide 4

[0030] Bisphenol A 0.5 nm CaCO 3 20.

[0031] After refining the above-mentioned components into a slurry with a fineness of 30μ, add it to a kneader and knead at a temperature of 110°C for 4 minutes; Refining for 6 minutes; send the blended mixture directly into the mill after internal mixing, and the front and rear roller distances are 2-3 mm; cut or granulate the plastic sheets after refining, and then store. Implementation effect: the electrical performance of the elastomer is 1013Ω·cm, which meets the cable insulation requirements; the afterburning time is 2.14 seconds, which is less than the standard requirement of less than 60 seconds; the distance between the burning end and the lower edge of the upper clamp is 396 mm, which is greater t...

Embodiment 2

[0033] High Polymerization PVC 100 Low Polymerization PVC 10

[0034] Diisodecyl phthalate 90 Lead sulfate tribasic 3

[0035] Dibasic lead phosphite 4 Dibasic lead stearate 1

[0036] Antimony trioxide 20 Molybdenum oxide 5

[0037] Bisphenol A 0.3 Nano CaCO 3 10

[0038] Clay 10.

[0039] After refining the above components into a slurry with a fineness of 30μ, add it to a kneader and knead for 5 minutes at a temperature of 100°C; then send the kneaded mixture into a twin-screw extruder, and the temperature of the feed port 130°C, body temperature 140°C, head temperature 165°C, after granulation by twin-screw extruder, store. Implementation effect: the electrical performance of the elastomer is 1013Ω·cm, which meets the cable insulation requirements; the afterburning time is 2.34 seconds, which is less than the standard requirement of less than 60 seconds; the distance between the burning end and the lower edge of the upper fixture is 386 mm, which is greater tha...

Embodiment 3

[0041] High Polymerization PVC 100 Low Polymerization PVC 50

[0042] Dioctyl terephthalate 90 Tribasic lead sulfate 4

[0043] Dibasic lead phosphite 3 dibasic lead stearate 0.5

[0044] Antimony trioxide 8 Molybdenum oxide 5

[0045] Bisphenol A 0.3 Light CaCO 3 30

[0046]Chlorinated paraffins 5.

[0047] After the above-mentioned components are refined to a slurry fineness of 30μ, they are added to a kneader and kneaded at a temperature of 110°C for 4 minutes; Refining for 14 minutes; the blended mixture after banburying is directly sent to the screw granulator, the temperature of the feed inlet is 130°C, and the temperature of the machine head is 170°C for granulation and then storage. Implementation effect: the electrical performance of the elastomer is 1013Ω·cm, which meets the cable insulation requirements; the afterburning time is 2.54 seconds, which is less than the standard requirement of less than 60 seconds; the distance between the burning end and the...

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Abstract

This invention relates to PVC elastomer formula for flame retarding mine use sofe cable and its processing technique. The formula includes the following contents(weight share): high polymerized PVC 100, low polymerized PVC 10-50, the plasticizer 60-120, tri-salt lead sulfate 2-5, disalt lead phosphate 2-5, disalt lead stearate 0.5-1.5 barium stearate 0.5-1.0, inflaming retarding agent 10-20, assistant retarding agent 2-7, antioxidant 0.1-1.0, bulking agent 10-30. The processing technique is as follows: match every group according to weight ratio and then past them; knead the pasting and powder under 90-110deg.C for 4-10 minutes, plasticize the kneaded mixture and particlize the processed rubber material and storage them. The elasticity of PVC of this invention can arrive the elasticity of rubber, and its electrical performance, hot endurance, inflaming retarding performance and tensile and breaking elongation are up to the standards.

Description

technical field [0001] The invention relates to a formula and a processing technology of a sheath and an insulating material of a flame-retardant mine flexible cable, in particular to a formula of a polyvinyl chloride elastomer of a flame-retardant mine flexible cable and a processing technology thereof. Background technique [0002] Flexible cables used in mines have corresponding requirements on flexibility and flame retardancy. At present, rubber cables are widely used in mines because of their good characteristics of flexibility and flame retardancy. Rubber cables generally use natural rubber, styrene-butadiene rubber and ethylene-propylene rubber as insulation, and neoprene and chlorosulfonated polyethylene as sheaths. Although rubber cables have certain flame-retardant properties, they are decomposed by heat when ignited. A large amount of hydrogen chloride gas will be produced to form dense smoke, which will not only affect the rescue work and evacuation of personnel,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/40C08K5/12C08L27/06H01B7/17
Inventor 陈申福
Owner JIANGWAN SPECIAL CABLE SHANGHAI
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