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Low-smoke flame-retardant PVC (polyvinyl chloride) cable material and preparation method thereof

A low-smoke flame-retardant and cable material technology, applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of poor thermal stability, inconspicuousness, low toughness, etc., and achieve excellent flame retardant effect, good insulation effect, good toughness

Active Publication Date: 2015-06-17
OPTA POLYMER JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the above technical problems, the present application provides a low-smoke flame-retardant PVC cable material and its preparation method, which solves the problem of poor flame-retardant effect, poor thermal stability, and aging caused by oxygen and ultraviolet light in existing low-smoke flame-retardant PVC cable materials. The smoke suppression effect is not obvious, the toughness is low, etc.

Method used

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  • Low-smoke flame-retardant PVC (polyvinyl chloride) cable material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0085] PVC 100;

[0086] Epoxidized soybean oil 2;

[0087] TOTM 50;

[0088] Tricresyl phosphate 25;

[0089] Lead stearate 0.3;

[0090] Tribasic lead sulfate 3;

[0091] Dibasic lead phosphite 0.5;

[0092] Chlorinated paraffins 15;

[0093] Oxidized PE wax 0.2;

[0094] Zinc borate 4;

[0095] Aluminum hydroxide 10;

[0096] Antimony 6;

[0097] CPE 55;

[0098] Ferrocene 5;

[0099] Magnesium oxide 0.5;

[0100] Copper oxalate 0.5;

[0101] Clay 10.

[0102] Step 2: Mix PVC, plasticizer, heat stabilizer, toughener and flame retardant at 50°C for 10 minutes, add the rest of the components, heat up to 70°C and mix for 15 minutes;

[0103] Step 3: Put the mixed materials in the second step into a twin-screw extruder with a length-to-diameter ratio of 20:1. The temperature of the extruder is set as follows: Zone 1: 150-160°C, Zone 2: 160-170°C , Three zone...

Embodiment 2

[0106] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0107] PVC 100;

[0108] Epoxidized soybean oil 2;

[0109] Diisononyl phthalate 60;

[0110] Lead stearate 0.6;

[0111] Tribasic lead sulfate 5;

[0112] Lead dibasic phosphite 2.5;

[0113] Chlorinated paraffin 20;

[0114] Oxidized PE wax 0.25;

[0115] Zinc borate 5;

[0116] Aluminum hydroxide 25;

[0117] Antimony oxide 8;

[0118] CPE 55;

[0119] Bisphenol A 0.75;

[0120] Ferrocene 5;

[0121] Magnesium oxide 1;

[0122] copper oxalate 1;

[0123] Clay 15.

[0124] Step 2: Mix PVC, plasticizer, heat stabilizer, toughener and flame retardant at 50°C for 12 minutes, add the rest of the components, heat up to 70°C and mix for 20 minutes;

[0125] Step 3: Put the mixed materials in the second step into a twin-screw extruder with a length-to-diameter ratio of 20:1. The temperature of the extruder is set as follows: Zone 1: 150-160°C, Zone 2: 160-170°C ...

Embodiment 3

[0128] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0129]PVC 100;

[0130] Epoxidized soybean oil 2;

[0131] Diisononyl phthalate 60;

[0132] Lead stearate 1;

[0133] Tribasic lead sulfate 5;

[0134] Dibasic lead phosphite 3;

[0135] Chlorinated paraffin 20;

[0136] Oxidized PE wax 0.25;

[0137] Zinc borate 4;

[0138] Aluminum hydroxide 30;

[0139] Antimony 6;

[0140] Bisphenol A 0.5;

[0141] CPE 55;

[0142] Ferrocene 5;

[0143] Magnesium oxide 0.8;

[0144] copper oxalate 1;

[0145] Calcium carbonate 90;

[0146] Clay 10.

[0147] Step 2: Mix PVC, plasticizer, heat stabilizer, toughener and flame retardant at 50°C for 12 minutes, add the rest of the components, heat up to 70°C and mix for 20 minutes;

[0148] Step 3: Put the mixed materials in the second step into a twin-screw extruder with a length-to-diameter ratio of 20:1. The temperature of the extruder is set as follows: Zone 1: 150-160°...

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Abstract

The invention discloses a low-smoke flame-retardant PVC (polyvinyl chloride) cable material which comprises the following components in parts by mass: 100 parts of PVC, 2-80 parts of a plasticizer, 0.3-15 parts of a heat stabilizer, 0.25-25 parts of a lubricant, 4-60 parts of a flame retardant, 0.5-60 parts of a toughener, 1-5 parts of dicyclopentadienyl iron, 0.5-1.5 parts of magnesia, 0.5-1.5 parts of copper oxalate and 10-20 parts of pottery clay. The oxygen index of the product is up to 55% which is greatly improved compared with the oxygen index (41%) of a product which is obtained in the prior art, the flame-retardant effect is more excellent, and the maximum smoke density is 280; the dielectric strength is up to 30KV / mm which is higher than the dielectric strength (27KV / mm) of the existing product; the tensile strength is 20MPa, the elongation at break is 330-350%, and the brittle temperature is -50 DEG C; the volume resistivity at 20 DEG C is 4*10<14> Ohms.cm, and the volume resistivity at 0 DEG C is 2*10<13> Ohms.cm; and the product is excellent in flame-retardant effect, less in smoke generation, resistant to ultraviolet aging and good in insulation effect and tenacity, does not generate molten drops, can be produced in a large scale, and can be used for replacing the existing material continuously.

Description

technical field [0001] The application belongs to the field of PVC materials, and in particular relates to a low-smoke flame-retardant PVC cable material and a preparation method thereof. Background technique [0002] The wire and cable industry is an important supporting industry for my country's economic construction. It is widely used in various fields of the national economy and occupies a quarter of China's electrical industry. It is the second largest industry in the machinery industry after the automobile industry. Among them, the wires used for interior decoration are mainly PVC insulated cables with a rated voltage of 450 / 750V and below, also known as cloth wires. With the development of social urbanization, technology, and humanization, and the rapid development of the PVC industry, PVC materials are getting closer to people's lives, followed by an increase in the use of PVC cable materials, and most of the resistance to PVC cable materials Problems such as poor c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L23/28C08K13/02C08K5/12C08K5/1515C08K5/523C08K3/22C08K5/13C08K3/38C08K3/26C08K3/34B29C47/92H01B3/44B29C48/92
Inventor 刘家诚张成
Owner OPTA POLYMER JIANGSU