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A kind of cross-linked fluoroplastic heat-shrinkable sleeve and preparation method thereof

A technology of heat-shrinkable sleeves and fluoroplastics, which is applied in the field of plastic heat-shrinkable sleeves, can solve the problems of poor radiation resistance, low expansion ratio, and narrow application range, and achieve high temperature resistance.

Active Publication Date: 2019-04-30
SHANGHAI KAIBO SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a cross-linked fluoroplastic heat-shrinkable sleeve and its preparation method, which overcomes the heat-shrinkable sleeves in the prior art that have temperature resistance, electrical insulation, Poor medium resistance, low heat resistance level, low expansion ratio, poor radiation resistance, narrow application range, etc.

Method used

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  • A kind of cross-linked fluoroplastic heat-shrinkable sleeve and preparation method thereof
  • A kind of cross-linked fluoroplastic heat-shrinkable sleeve and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A cross-linked fluoroplastic heat-shrinkable sleeve, the preparation method of which is: (1) according to the parts by weight, take 90 parts of ETFE, 5 parts of TAIC, TiO 2 2 parts of pigment, 5 parts of antimony trioxide, and 1 part of low molecular weight PTFE. Cross-linkable fluoroplastic XLETFE particles are prepared by parallel twin-screw mixing and granulation;

[0046] (2) Using the XLETFE particles prepared in step (1), extrude the pipe through the extruder, and the extrusion temperature is set to 285°C;

[0047] (3) irradiating the pipe extruded in step (2) through an electron accelerator, and the irradiation dose is 80kGy;

[0048] (4) Heating the pipe material after radiation crosslinking in step (3) to 290°C and expanding it by 4 times to obtain the following: figure 1 Single layer cross-linked fluoroplastic heat shrink tubing shown.

Embodiment 2

[0050] A cross-linked fluoroplastic heat-shrinkable sleeve, the preparation method of which is as follows:

[0051] (1) According to parts by weight, take 20 parts of ETFE, 50 parts of ECTFE, 8 parts of TMT, 2 parts of cadmium yellow pigment, 5 parts of antimony trioxide, 1 part of diatomaceous earth, calcium hydroxide 1 part, silicone additive 1 part, white carbon black 1 part, hindered phenol phosphite compound antioxidant 2 parts, yellow crosslinkable fluoroplastic particles were prepared by parallel twin-screw mixing and granulation;

[0052] (2) Using the yellow crosslinkable fluoroplastic particles prepared in step (1), extrude the pipe through an extruder, and set the extrusion temperature to 295°C;

[0053] (3) irradiating the pipe extruded in step (2) through an electron accelerator, and the irradiation dose is 90kGy;

[0054] (4) Heating the irradiated tube to 290°C and expanding it by 3 times to obtain the following figure 1 Single layer cross-linked fluoroplastic...

Embodiment 3

[0056] A cross-linked fluoroplastic heat-shrinkable sleeve, the preparation method of which is as follows:

[0057] (1) According to parts by weight, take by weighing 50 parts of ECTFE, 5 parts of TMPTMA, 5 parts of iron red, 2 parts of magnesium oxide, 10 parts of antimony trioxide, and 1 part of low molecular weight PTFE. Mixing and granulation to prepare red cross-linkable fluoroplastic particles;

[0058] (2) Using the red cross-linkable fluoroplastic particles prepared in step (1), extrude the pipe through an extruder, and set the extrusion temperature to 310°C;

[0059] (3) irradiating the pipe extruded in step (2) through an electron accelerator, and the irradiation dose is 100kGy;

[0060] (4) Heating the irradiated tube to 290°C and expanding it by 4 times to get the following figure 1 Single layer cross-linked fluoroplastic heat shrink tubing shown.

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Abstract

The invention discloses a cross-linked fluoroplastic heat-shrinkable tube and a preparation method thereof and relates to a plastic heat-shrinkable tube. The cross-linked fluoroplastic heat-shrinkable tube is made of cross-linked fluoroplastic, and the cross-linked fluoroplastic is prepared from components of raw materials in parts by weight as follows: 50-95 parts of thermoplastic fluoroplastic, 1-8 parts of an assistant crosslinker, 1-5 parts of pigments, 1-10 parts of a fire retardant and 1-20 parts of other aids. Compared with heat-shrinkage tubes made of thermoplastic materials such as FEP (fluorinated ethylene propylene), PFA (polytetrafluoroethylene) and the like, the cross-linked fluoroplastic heat-shrinkable tube has higher expansion rate and is wider in use range, better in radiation resistance and capable of bearing 50 or more Mrad of radiation.

Description

technical field [0001] The invention relates to a plastic heat-shrinkable sleeve, in particular to a cross-linked fluoroplastic heat-shrinkable sleeve and a preparation method thereof. Background technique [0002] Heat-shrinkable sleeve, also known as heat-shrinkable protective sleeve, provides insulation protection for wires, cables and wire terminals. It has high-temperature shrinkage, softness, flame retardancy, insulation and corrosion resistance, and is widely used for insulation of various wire harnesses, solder joints, and inductors. Protection and rust and corrosion protection of metal pipes and rods. The material of the heat shrinkable tube is mainly plastic, including PVC, PE, polyolefin, fluoroplastic, etc. [0003] Fluoroplastic heat-shrinkable tubing has excellent properties such as mechanical physics, temperature resistance, medium resistance, flame retardancy, and electrical insulation. It is especially suitable for special environments such as corrosion, hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L27/18C08L83/04C08K5/3492C08K3/22C08K13/02C08K3/34C08K3/36C08K5/524C08K5/103C08K3/38B29C61/02
CPCB29C61/025C08K3/22C08K3/2279C08K3/34C08K3/38C08K13/02C08K2003/2206C08K2003/387C08L23/0892C08L2201/08C08L2203/20C08L2205/025C08L2205/03C08L2312/00C08L27/18C08K5/34924C08K2003/2241C08L83/04C08K3/36C08K5/524C08K5/103C08K2003/2272C08K2003/222
Inventor 严波曾伟
Owner SHANGHAI KAIBO SPECIAL CABLE FACTORY
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