Special heat-shrinkable tubing for aerospace and preparation method of special heat-shrinkable tubing

A heat-shrinkable sleeve, aerospace technology, applied in the field of cable materials, can solve the problems of single performance and high production cost, and achieve the effects of high mechanical strength, low dielectric loss and high transmission performance

Inactive Publication Date: 2017-04-26
广州凯恒科塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the fluorine-containing heat-shrinkable sleeves on the market are mostly a single resin component, which has a single performance and high production costs.

Method used

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  • Special heat-shrinkable tubing for aerospace and preparation method of special heat-shrinkable tubing
  • Special heat-shrinkable tubing for aerospace and preparation method of special heat-shrinkable tubing
  • Special heat-shrinkable tubing for aerospace and preparation method of special heat-shrinkable tubing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A special heat-shrinkable sleeve for aerospace, comprising the following components in parts by weight:

[0031]

[0032] The acid absorbent is magnesium oxide; the anti-copper agent is N-salicylamino-phthalimine; the antioxidant is 2,6-di-tert-butylphenol; Allyl isocyanurate.

[0033] The heat-shrinkable sleeve described in this embodiment is prepared by the following method:

[0034] 1) Take the ETFE, PTFE, acid absorbent, anti-copper agent, and antioxidant of the formula, and put them into the mixing chamber of the single-screw internal mixing granulator in sequence, and banbury evenly at 260 ° C;

[0035] 2) Then add the cross-linking aid in the formula amount to the mixing room of the single-screw banburying granulator, and banbury evenly under the condition of 260°C; obtain the mixture;-

[0036] 3) Automatically feed the mixture to the granulation part of the single-screw banburying granulator, extrude at 260-360°C, wire drawing, air cooling, and pelletizing...

Embodiment 2

[0041] A special heat-shrinkable sleeve for aerospace, comprising the following components in parts by weight:

[0042]

[0043] The acid absorbent is magnesium hydroxide; the anti-copper agent is N, N'-bis[β(3,5-ditertiary-4-hydroxyphenyl)propionyl]hydrazine; the antioxidant Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester; the cross-linking assistant is triallyl isocyanurate.

[0044] The heat-shrinkable sleeve described in this embodiment is prepared by the following method:

[0045] 1) Take the ETFE, PTFE, acid absorbent, anti-copper agent, antioxidant, titanium dioxide in the formula quantity, put them into the mixing chamber of the single-screw internal mixing granulator in sequence, and banbury evenly at 320°C;

[0046] 2) Then add the formula amount of cross-linking aid to the mixing chamber of the single-screw banburying granulator, and banbury evenly under the condition of 320°C; obtain the mixture;-

[0047] 3) Automatically feed...

Embodiment 3

[0052] A special heat-shrinkable sleeve for aerospace, comprising the following components in parts by weight:

[0053]

[0054] The acid absorbent is magnesium hydroxide; the anti-copper agent is N, N'-bis[β(3,5-ditertiary-4-hydroxyphenyl)propionyl]hydrazine; the antioxidant Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester; the cross-linking assistant is triallyl cyanuric acid ester.

[0055] The heat-shrinkable sleeve described in this embodiment is prepared by the following method:

[0056] 1) Take the ETFE, PTFE, acid absorbent, anti-copper agent, antioxidant, titanium dioxide of the formula, put them into the mixing room of the single-screw internal mixing granulator in sequence, and banbury evenly at 300°C;-

[0057] 2) Add the formula amount of crosslinking aid to the mixing chamber of the single-screw banburying granulator, and banbury evenly under the condition of 300°C; obtain the mixture;

[0058] 3) Automatically feed the mixtur...

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Abstract

The invention discloses special heat-shrinkable tubing for aerospace and a preparation method of the special heat-shrinkable tubing. The heat-shrinkable tubing is prepared from components in parts by weight as follows: 50-80 parts of ETFE, 5-50 parts of PTFE, 5-30 parts of an acid absorber, 0.1-2 parts of a copper ion inhibitor, 0.3-5 parts of an antioxidant, 0.3-3 parts of a crosslinking coagent and 0-15 parts of titanium dioxide. The heat-shrinkable tubing with high temperature resistance level is obtained by compounding materials such as ETFE, PTFE and the like, has the characteristics of being resistant to high temperature and low temperature and further has the advantages of little dielectric loss, high transmission performance, good oil and solvent resistance, excellent flame retardance, higher mechanical strength and the like.

Description

technical field [0001] The invention relates to the field of cable materials. In particular, it relates to a special heat-shrinkable sleeve for aerospace and a preparation method thereof. Background technique [0002] Heat shrinkable sleeves, also known as heat shrinkable protective sleeves, provide insulation protection for wires, cables and wire terminals. The heat-shrinkable sleeve has the characteristics of high-temperature shrinkage, softness, flame retardancy, and insulation and corrosion resistance. It is widely used in the insulation protection of various wiring harnesses, solder joints, and inductors, and the antirust and anticorrosion protection processes of metal pipes and rods. There are three types of common resins in the material formulation of heat shrinkable sleeves: polyolefin, polyvinyl chloride, and fluoropolymer. Among them, fluoropolymer has the highest comprehensive performance, high high and low temperature resistance, flame retardancy, weather resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L27/18C08L23/06C08K13/02C08K3/22C08K5/13C08K5/3492C08K5/25C08K5/134C08K5/375B29D23/00
CPCC08L23/0892B29D23/00C08L2201/02C08L2201/08C08L2203/20C08L2205/03C08L2312/06C08L27/18C08L23/06C08K13/02C08K2003/222C08K5/13C08K5/34924C08K2003/2224C08K5/25C08K5/1345C08K5/375
Inventor 黄雷胡晖冉祥海刘志辉
Owner 广州凯恒科塑有限公司
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