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A high flame-retardant high-strength sheath material

A sheath material and high-strength technology, applied in the field of sheath materials, can solve the problems of loss of cable protection, poor elasticity, poor tear performance, and reduced mechanical properties of products, so as to improve appearance approval and better flame retardancy , The effect of increased modulus

Active Publication Date: 2015-10-21
SHANGHAI LANHAO ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the rubber types used in cable sheaths mainly include chlorinated polyethylene and neoprene. Chlorinated polyethylene is cheap, and has good aging performance, flame retardancy, oil resistance and processing performance, but its elasticity, tearing Poor performance, slow elastic recovery during long-term application, and the sheath is prone to tearing and damage and loses the protection of the cable
[0003] Chloroprene rubber has excellent comprehensive properties, but it also has disadvantages such as short scorch time and severe roll sticking during the mixing process. During the mixing process, not only must great attention be paid to temperature control, but also high labor intensity, high risk factor, and high production efficiency. Low, some manufacturers use CR and CM mechanical blending to improve processing performance, but the mechanical properties of the resulting products will be significantly reduced

Method used

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  • A high flame-retardant high-strength sheath material

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Effect test

specific Embodiment 1

[0031] A high flame-retardant high-strength sheath material disclosed by the present invention is selected from 100 parts of CR / PVC, 4 parts of magnesium oxide, 0.5 parts of TMTD, 1.5 parts of DM, 1 part of stearic acid, 2 parts of ODA, and 10 parts of talcum powder. 50 parts of clay, 10 parts of carbon black, 15 parts of white carbon black, 1 part of KH-550, 3 parts of paraffin, 8 parts of flame retardant.

[0032] Put the above materials into the internal mixer and knead for 5~7 minutes, lift the top bolt to sweep the material, repeat twice, and then continue to knead until the temperature shows 105°C, discharge the kneaded rubber to the open kneader and turn it over for kneading, then Do not open strips, after cooling, put them into the internal mixer again, add 3.5 parts of zinc oxide and 1.5 parts of NA-22, mix for 1 minute, carry out stripping and production on the three-roller laminator, and put the finished product in sulfur after 16 hours For workshop use, during the ...

specific Embodiment 2

[0033] A high flame-retardant high-strength sheath material disclosed by the present invention is selected from 100 parts of CR / PVC, 5 parts of magnesium oxide, 1 part of TMTD, 0.8 parts of DM, 2 parts of stearic acid, 3 parts of ODA, and 20 parts of talcum powder , 40 parts of clay, 13 parts of carbon black, 12 parts of white carbon black, 0.8 parts of KH-550, 4 parts of paraffin, 10 parts of flame retardant.

[0034] Put the above materials into the internal mixer and knead for 5~7 minutes, lift the top bolt to sweep the material, repeat twice, and then continue to knead until the temperature shows 105°C, discharge the kneaded rubber to the open kneader and turn it over for kneading, then Do not open the strips, after cooling, put them into the internal mixer again, add 4 parts of zinc oxide and 1 part of NA-22, mix for 1 minute, open the strips on the three-roller laminator, and put the finished product into the sulfur after 16 hours For workshop use, during the cable extru...

specific Embodiment 3

[0035] A high flame-retardant high-strength sheath material disclosed by the present invention is selected from 100 parts of CR / PVC, 6 parts of magnesium oxide, 1.5 parts of TMTD, 0.5 parts of DM, 3 parts of stearic acid, 4 parts of ODA, and 30 parts of talcum powder. 30 parts of clay, 15 parts of carbon black, 10 parts of white carbon black, 0.5 parts of KH-550, 6 parts of paraffin, 15 parts of flame retardant.

[0036] Put the above materials into the internal mixer and knead for 5~7 minutes, lift the top bolt to sweep the material, repeat twice, and then continue to knead until the temperature shows 105°C, discharge the kneaded rubber to the open kneader and turn it over for kneading, then Do not cut strips, put them back into the internal mixer after cooling, add 5 parts of zinc oxide and 0.5 parts of NA-22, mix for 1 minute, carry out strips and slices in a three-roller laminator, and put the finished product in for 16 hours. Add even sulfur For workshop use, during the c...

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Abstract

The invention discloses a sheathing material with high flame retardancy and high strength. The sheathing material comprises, by weight, 100 parts of CR / PVC, 3.5-5 parts of zinc oxide, 4-6 parts of magnesium oxide, 220.5-1.5 parts of NA, 0.5-1.5 parts of TMTD, 0.5-1.5 parts of DM, 1-3 parts of stearic acid, 2-4 parts of age resister, 10-30 parts of talcum powder, 30-50 parts of pot clay, 10-15 parts of carbon black, 10-15 parts of white carbon black, 0.5-1 parts of coupling reagent, 3-6 parts of paraffin and 8-15 parts of fire retardant. CR-PVC clay-rubber co-precipitate is adopted in the sheathing material with high flame retardancy and high strength, an emulsion copolymerization method is adopted in the sheathing material to enable CR and PVC to have a good mutual effect on the molecule level, the advantages of the emulsion copolymerization method are much better than those of an ordinary physical blending method, the processing property is excellent, and an obtained product has high product strength and better flame retardancy.

Description

technical field [0001] The invention relates to a sheath material, in particular to a sheath material with high strength and high flame retardancy. Background technique [0002] At present, the rubber types used in cable sheaths mainly include chlorinated polyethylene and neoprene. Chlorinated polyethylene is cheap, and has good aging performance, flame retardancy, oil resistance and processing performance, but its elasticity, tearing The performance is poor, the elastic recovery is slow in the long-term application process, and the sheath is easily torn and damaged and loses the protection of the cable. [0003] Chloroprene rubber has excellent comprehensive properties, but it also has disadvantages such as short scorch time and severe roll sticking during the mixing process. During the mixing process, not only must great attention be paid to temperature control, but also high labor intensity, high risk factor, and high production efficiency. Low, some manufacturers adopt ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L11/00C08L27/06C08K13/02C08K3/22C08K5/06C08K3/34C08K3/04C08K3/36C08K5/47
Inventor 钱章兴王兵兵田敏周春杰季飞
Owner SHANGHAI LANHAO ELECTRIC