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PET heat shrinkable sleeve material with high temperature and high humidity resistance and preparation method of PET heat shrinkable sleeve material

A heat-shrinkable sleeve, high temperature resistance technology, applied in the field of materials, can solve the problems of poor heat dissipation, long working time and other problems, and achieve the effects of excellent mechanical strength and stiffness, excellent high temperature and high humidity resistance, and good shrinkage performance.

Active Publication Date: 2019-04-26
CYG CHANGTONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the closed environment inside the car, poor heat dissipation, and long-term working hours, for the use of this harsh environment, what is needed is a PET heat-shrinkable sleeve that can withstand high temperature and high humidity to protect electronic components.

Method used

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  • PET heat shrinkable sleeve material with high temperature and high humidity resistance and preparation method of PET heat shrinkable sleeve material
  • PET heat shrinkable sleeve material with high temperature and high humidity resistance and preparation method of PET heat shrinkable sleeve material
  • PET heat shrinkable sleeve material with high temperature and high humidity resistance and preparation method of PET heat shrinkable sleeve material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A high-temperature and high-humidity-resistant PET heat-shrinkable tube material, which contains components and their mass percentages: PET45%, PEN 20%, PCTG 25%, TPE 2%, TPEE 6%, and anti-hydrolysis stabilizer monomer Carbodiimide 1%, antioxidant 1%. Antioxidant is a compound of 1010 and 168.

[0026] It adopts the following steps to prepare PET heat shrinkable tubing:

[0027] The first step: Weigh PEN, PCTG, TPE according to the formula (mass ratio), the above materials are dried at 70-80°C for 4-6 hours, mixed uniformly, and then extruded and granulated by a twin-screw extruder to obtain preliminary granulation material;

[0028] The following processing conditions are used for the preliminary granulation of raw materials:

[0029] Such as figure 1 As shown, the temperature of each zone and die of the twin-screw extruder: Zone 1: 120±5°C, Zone 2: 240±5°C, Zone 3: 260±5°C, Zone 4: 265±5°C, Zone 5: 270 ±5℃, six zones: 265±5℃, seven zones: 260±5℃, eight zones: 255±5℃, nine ...

Embodiment 2

[0033] On the basis of Example 1, the components and their mass percentages of the high temperature and humidity resistant PET heat shrinkable tube material of this example are: PET 54%, PEN 20%, PCTG 15%, TPE 2%, TPEE 6% , Anti-hydrolysis stabilizer monomer carbodiimide 2%, antioxidant 1%. Antioxidant is a compound of 1010 and 168.

[0034] The first and second steps of the extrusion process are the same as in Example 1.

Embodiment 3

[0036] On the basis of Example 1, the components and mass percentages of the high temperature and humidity resistant PET heat shrinkable tube material of this example are: PET 64%, PEN 15%, PCTG 15%, TPE 1%, TPEE 6% , Anti-hydrolysis stabilizer monomer carbodiimide 2%, antioxidant 2%. Antioxidant is a combination of 1010 and 168.

[0037] The first and second steps of the extrusion process are the same as in Example 1.

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Abstract

The invention provides a PET heat shrinkable sleeve material with high temperature and high humidity resistance and a preparation method of the PET heat shrinkable sleeve material. The PET heat shrinkable sleeve material with high temperature and high humidity resistance is prepared from the following components in percentage by mass: 45%-65% of PET, 10%-20% of PEN, 10%-25% of PCTG, 1%-2% of TPE,2%-10% of TPEE, 0.1%-3% of a hydrolysis resistant stabilizer and 0.1%-2% of an antioxidant, and the sum of the mass percentages of the components is 100%. The PET heat shrinkable sleeve material adopting the technical scheme not only has good shrinkage performance, but also has excellent mechanical strength and rigidity, and the most outstanding characteristic is that the PET heat shrinkable sleeve material has excellent high temperature and high humidity resistance after shrinkage, and is not brittle for 500 hours or longer especially when a double 85 high temperature and high humidity resistance test is carried out, and the high temperature and high humidity resistance is much higher than that of PET heat shrinkable sleeves on the common market.

Description

Technical field [0001] The invention belongs to the technical field of materials, and particularly relates to a high-temperature and high-humidity-resistant PET heat shrinkable sleeve material and a preparation method thereof. Background technique [0002] With the rapid development of the electronic market, more and more types of capacitors are required. As an environmentally friendly material, PET has better overall performance than PVC, and has become a new material that replaces PVC heat shrinkable tubing on the market. Nowadays, the technology of PET heat-shrinkable tubing is also becoming mature. Its environmentally friendly materials, good insulation coating effect, and product stability can meet the application requirements of most customers. [0003] With the increase in the application fields of capacitors, the use environment of capacitors is becoming more and more diversified, and the requirements for PET bushings covering capacitors are constantly increasing. Especia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/00C08K5/29C08K5/134C08K5/526
CPCC08L67/02C08L2201/08C08L2203/18C08L2205/025C08L2205/035C08L67/00C08K5/29C08K5/1345C08K5/526
Inventor 于恩敬卢金寿元紫奇温碧霞彭亚东左明龙刘勇
Owner CYG CHANGTONG NEW MATERIAL
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