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Low-smoke flame-retardant rubber cable material and preparation method thereof

A rubber cable, low-smoke flame-retardant technology, applied in the direction of rubber insulators, organic insulators, etc., can solve the problems of cable material flame retardancy, weather resistance, thermal stability, poor thermal stability of polyurethane elastomers, etc., to achieve physical and mechanical Performance and processing technology Good performance, good flame retardancy, easy processing effect

Inactive Publication Date: 2015-10-07
梁忠顺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal stability of polyurethane elastomers used in cable materials in the prior art is relatively poor, resulting in unsatisfactory flame retardancy, weather resistance and thermal stability of the prepared cable materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A low-smoke flame-retardant rubber cable material is composed of the following raw materials in parts by weight:

[0034] 60 pieces of Zou film glue

[0035] CR232 neoprene 60 parts

[0036] 30 parts of nitrile rubber

[0037] 4 parts stearic acid

[0038] Titanate coupling agent 4 parts

[0039] Zinc oxide 6 parts

[0040] Antioxidant BHT 5 parts

[0041] Rubber accelerator TMTD 3 parts

[0042] Aluminum hydroxide 100 parts

[0043] Silica glass fiber 100 parts

[0044] The specific performance indicators of the obtained low-smoke flame-retardant rubber cable material are as follows:

[0045] Before aging: elongation at break 250%;

[0046] Tensile strength 10.1N / mm2;

[0047] After aging (120℃*240h), the elongation at break is 200%;

[0048] Tensile strength 11.1N / mm2;

[0049] The change rate of elongation at break is -8.0%, and the change rate of tensile strength is -7.1%;

[0050] Ozone resistance (25°C, concentration 0.020-0.030%, 30h) without cracks;...

Embodiment 2

[0052] A low-smoke flame-retardant rubber cable material is composed of the following raw materials in parts by weight:

[0053] Natural gum 40 parts

[0054] CR232 neoprene 40 parts

[0055] Nitrile rubber 40 parts

[0056] Stearic acid 5 parts

[0057] Titanate coupling agent 5 parts

[0058] Zinc oxide 5 parts

[0059] Antioxidant BHT 6 parts

[0060] Rubber accelerator TMTD 5 parts

[0061] Aluminum hydroxide 120 parts

[0062] Silica glass fiber 100 parts

[0063] The specific performance indicators of the obtained low-smoke flame-retardant rubber cable material are as follows:

[0064] Before aging: elongation at break 210%;

[0065] Tensile strength 11.1N / mm2;

[0066] After aging (120℃*240h), the elongation at break is 195%;

[0067] Tensile strength 11.5 N / mm2;

[0068] The change rate of elongation at break is -8.5%, and the change rate of tensile strength is -8.1%;

[0069] Ozone resistance (25°C, concentration 0.018-0.030%, 30h) without cracks;

[0070]...

Embodiment 3

[0071] A low-smoke flame-retardant rubber cable material is composed of the following raw materials in parts by weight:

[0072] Natural gum 100 parts

[0073] CR232 neoprene 80 parts

[0074] 35 parts of nitrile rubber

[0075] 4 parts stearic acid

[0076] Titanate coupling agent 4 parts

[0077] Zinc oxide 5 parts

[0078] Antioxidant BHT 5 parts

[0079] Rubber accelerator TMTD 3 parts

[0080] Aluminum hydroxide 120 parts

[0081] Silica glass fiber 100 parts

[0082] The specific performance indicators of the obtained low-smoke flame-retardant rubber cable material are as follows:

[0083] Before aging: elongation at break 210%;

[0084] Tensile strength 12.1N / mm2;

[0085] After aging (120℃*240h), the elongation at break is 205%;

[0086] Tensile strength 11.7 N / mm2;

[0087] The change rate of elongation at break is -9.0%, and the change rate of tensile strength is -9.1%;

[0088] Ozone resistance (25°C, concentration 0.018-0.025%, 30h) without cracks;

...

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Abstract

The invention relates to cable materials and a preparation method thereof, in particular to a low-smoke flame-retardant rubber cable material and the preparation method thereof. The low-smoke flame-retardant rubber cable material is composed of the following raw materials including, by weight, 40-100 parts of natural rubber, 40-80 parts of chloroprene rubber, 30-40 parts of nitrile rubber, 4-5 parts of stearic acid, 4-5 parts of a coupling agent, 5-6 parts of zinc oxide, 5-6 parts of antioxidant BHT, 3-5 parts of accelerator, 100-120 parts of a fire retardant and 60-100 parts of a filling agent. The main component of the natural rubber is polyisoprene which is one of the air-dried rubber piece and crepe; the accelerator is rubber accelerator TMTD; the chloroprene rubber is an elastic body generated through alpha-polymerization with chloroprene as a main raw material. The low-smoke flame-retardant rubber cable material and the preparation method thereof have the advantages that low-smoke, fire-retardant and weather-resistance effects of the cable material are achieved, environmental-protection and safety are achieved, the physical and mechanical properties and the machining processing property of the prepared cable material are good, the machining is easy, the raw materials are more environmental, the toxicity is low, and the popularization strength is large.

Description

technical field [0001] The invention relates to a cable wire material and a preparation method thereof, in particular to a low-smoke flame-retardant rubber cable material and a preparation method thereof. Background technique [0002] With the rapid development of economy, cables are widely used in communication, electric power and other fields. However, since cables are combustible substances, with the frequent occurrence of electrical fire accidents, the flame retardant problem of cables has attracted the attention of countries all over the world. When the cable burns, it releases a large amount of smoke and toxic and corrosive gas, which is a dangerous factor in a fire. It hinders people's safe evacuation and fire fighting work during a fire, causing serious loss of life and property. In recent years, there are more and more fires caused by the aging of cables. Therefore, the improvement of the weather resistance of cables has become the focus of research. In order to r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L11/00C08L9/02C08K13/04C08K7/14H01B3/28B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704C08L7/00C08L9/02C08L11/00C08L2201/02C08L2203/202C08L2205/03H01B3/28C08K13/04C08K7/14C08K5/09C08K2003/2296C08K2003/2227
Inventor 梁忠顺
Owner 梁忠顺
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