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High-temperature resistant thermoplastic polyvinyl chloride cable material and preparation method thereof

A polyvinyl chloride cable, polyvinyl chloride technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of low temperature resistance and aging resistance, narrow temperature range, low mechanical properties of cables, etc., and achieves high temperature resistance. The effect of adapting to a wide temperature range and good strength

Active Publication Date: 2014-01-22
江西一舟数据技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tensile strength of the cable is only 13.4MPa, and the elongation at break is only 240%. After aging (136℃×168h), the retention rate of tensile strength is about 75%, and the retention rate of elongation at break is about 75%. %, it can be seen that the mechanical properties of the cable are low, the ability to withstand high temperature aging is also low, and the adaptable temperature range is narrow

Method used

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  • High-temperature resistant thermoplastic polyvinyl chloride cable material and preparation method thereof
  • High-temperature resistant thermoplastic polyvinyl chloride cable material and preparation method thereof
  • High-temperature resistant thermoplastic polyvinyl chloride cable material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Various raw materials were weighed according to the composition and parts by weight of the high-temperature-resistant thermoplastic polyvinyl chloride cable material described in Example 1 in Table 1;

[0036] Pour the above weighed polyvinyl chloride into a high-mixer and mix. After mixing evenly, add the weighed modified plasticizer and ordinary plasticizer, and stir until the modified plasticizer, ordinary plasticizer is heated to 100°C. After the plasticizer is completely absorbed by the polyvinyl chloride, add the weighed modifier, flame retardant, inorganic filler, stabilizer and processing aid, and stir until the raw materials are completely uniform;

[0037] The above-mentioned uniformly stirred raw materials are discharged from the high mixer, poured into the feeder, and fed into the twin-screw extruder by the feeder to extrude and granulate. The feeding frequency of the feeder is 25Hz, and the twin-screw extruder The temperature of the extruder was set at 180°...

Embodiment 2

[0039] Various raw materials were weighed according to the composition and parts by weight of the high-temperature-resistant thermoplastic polyvinyl chloride cable material described in Example 2 in Table 1;

[0040] Pour the above weighed polyvinyl chloride into a high-mixer and mix it. After mixing evenly, add the weighed modified plasticizer and ordinary plasticizer. When heated to 90°C, stir until the modified plasticizer, ordinary plasticizer After the plasticizer is completely absorbed by the polyvinyl chloride, add the weighed modifier, flame retardant, inorganic filler, stabilizer and processing aid, and stir until the raw materials are completely uniform;

[0041] The above-mentioned uniformly stirred raw materials are discharged from the high mixer, poured into the feeder, and fed into the twin-screw extruder by the feeder to extrude and granulate. The feeding frequency of the feeder is 20Hz, and the twin-screw extruder The temperature of the extruder was set at 170°...

Embodiment 3

[0043] According to the composition and parts by weight of the high-temperature-resistant thermoplastic polyvinyl chloride cable material described in Example 3 in Table 1, various raw materials are weighed;

[0044] Pour the above weighed polyvinyl chloride into a high-mixer and mix. After mixing evenly, add the weighed modified plasticizer and ordinary plasticizer. When heated to 110°C, stir until the modified plasticizer, ordinary plasticizer After the plasticizer is completely absorbed by the polyvinyl chloride, add the weighed modifier, flame retardant, inorganic filler, stabilizer and processing aid, and stir until the raw materials are completely uniform;

[0045] The above-mentioned uniformly stirred raw materials are discharged from the high mixer, poured into the feeder, and fed into the twin-screw extruder by the feeder to extrude and granulate. The feeding frequency of the feeder is 30Hz, and the twin-screw extruder The temperature of the extruder was set at 190° C...

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Abstract

The invention relates to a high-temperature resistant thermoplastic polyvinyl chloride cable material, belonging to the technical field of new materials. The cable material consists of the following components in parts by weight: 100 parts of polyvinyl chloride, 30-50 parts of modified plasticizer, 10-20 parts of plasticizer, 20-40 parts of modifier, 2-10 parts of flame retardant, 10-30 parts of inorganic filler, 5-15 parts of stabilizer and 1-5 parts of processing aid. A preparation method of the cable material comprises the following steps: weighing the raw materials according to the components and weight parts of the cable material; uniformly mixing the polyvinyl chloride and adding the modified plasticizer and the common plasticizer; heating and stirring and adding other raw materials; discharging from a high mixing machine and feeding into a twin-screw extruder for extrusion and granulation; and performing air cooling to obtain the final product. The cable material has the advantages that the physical property is good, the applicable temperature range is wide, little pollution is caused, the flame retardance is good, the smoke output in combustion is low, the preparation method is simple, and the cost is low.

Description

technical field [0001] The invention relates to a cable material and a preparation method thereof, in particular to a high-temperature-resistant thermoplastic polyvinyl chloride cable material and a preparation method thereof, belonging to the technical field of new materials. Background technique [0002] With the rapid development of the economy, wires and cables are widely used in various industries and fields. While the consumption of wires and cables is increasing, the accidents of electrical fires are also increasing. The safety, environmental protection and service life of wire and cable products have higher requirements. The flame retardant problem of wires and cables has gradually attracted the attention of countries all over the world. . As early as the 1970s, flame-retardant cables were developed successively at home and abroad. Although these flame-retardant cables have certain flame-retardant effects, they still have many defects, such as poor high-temperature ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K13/02C08K5/12C08K3/22C08K5/03C08K3/38C08K3/34H01B7/295
Inventor 余玲胡建友张煜杰刘华张文阳
Owner 江西一舟数据技术有限公司
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