High-elasticity anti-aging vehicle door sealing strip

A kind of sealing strip, anti-aging technology, applied in the coating and other directions, can solve the waterproof, dustproof, sound insulation, temperature insulation performance can not be satisfied, insufficient, the use of 2 to 3 years will appear aging, unfavorable to the industrial production and production of sealing strips. Transportation and other problems, to achieve the current effect of superior anti-aging performance, promoting sufficient grafting, and delaying aging

Inactive Publication Date: 2019-09-03
李晓波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The door seal is a product that seals the door so that it is not easy to open, and plays the role of shock absorption, waterproof, sound insulation, heat insulation, dustproof, and fixing. It is mainly used in door frames, side windows, and front and rear gears. On the windshield, engine cover and trunk cover, it plays the role of waterproof, dustproof, sound insulation, temperature insulation, shock absorption, decoration, etc. At present, the door sealing strips used in automobiles have insufficient anti-aging performance, and they will wear off after 2 to 3 years of use. Aging phenomenon occurs, the elasticity decreases, the shock absorption effect decreases obviously, and the sealing performance becomes poor, so that the waterproof, dustproof, sound insulation and temperature insulation performance of the car cannot meet the needs of drivers, and the comfort level is reduced. Frequent replacement of sealing strips will increase driving. A family of vehicles is consumed, and if the replacement sealing strip is not installed properly, the effect of the sealing strip will also be greatly reduced
[0003] The existing patent document CN 107236111 A discloses a micro-foaming process for car door sealing strips. The raw material is composed of two components A and B. The preparation process is simple, but the raw materials are directly foamed and bonded to the door panel, which is not conducive to sealing strips. The industrial production and transportation, and the adhesion between the sealing strip and the door panel is poor. After a period of use, the sealing strip and the door panel are easy to separate, the aging resistance is weak, and the service life is short, which will also lead to the problem of frequent replacement. Can not meet the needs of consumers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-elastic anti-aging car door seal, made of the following raw materials in parts by weight: polyether polyol 77, polyurethane 71, foamed silica gel 46, polyimide 31, isooctyltriethoxysilane 28, ortho Phthalate 17, azodicarbonamide 14, tricalcium phosphate 8, nano titanium dioxide 2, nano zinc oxide 2.

[0022] The polyimide is polycondensation type aromatic polyimide.

[0023] A preparation method of a high-elastic anti-aging car door sealing strip, comprising the following steps:

[0024] (1) Add the polyether polyol and polyurethane to the reaction kettle after mixing, heat slowly until completely melted at a heating rate of 1°C / min, and keep stirring for 20 minutes to obtain the mixture A;

[0025] (2) Add the foamed silica gel and polyimide into the reaction kettle, heat until completely melted while stirring, and continue to heat and stir for 30 minutes to obtain the mixture B;

[0026] (3) Add mixture B to mixture A, heat and stir for 15 minutes, add phthal...

Embodiment 2

[0031] A high-elastic anti-aging car door seal, made of the following raw materials in parts by weight: polyether polyol 78, polyurethane 72, foamed silica gel 47, polyimide 32, isooctyltriethoxysilane 29, ortho Phthalate 18, azodicarbonamide 15, tricalcium phosphate 9, nano titanium dioxide 3, nano zinc oxide 3.

[0032] The polyimide is polycondensation type aromatic polyimide.

[0033] A preparation method of a high-elastic anti-aging car door sealing strip, comprising the following steps:

[0034] (1) Add polyether polyol and polyurethane to the reaction kettle after mixing, heat slowly until completely melted at a heating rate of 1.5°C / min, and keep stirring for 25 minutes to obtain mixture A;

[0035] (2) Add the foamed silica gel and polyimide into the reaction kettle, heat until completely melted while stirring, and continue to heat and stir for 35 minutes to obtain the mixture B;

[0036] (3) Add mixture B to mixture A, heat and stir for 20 minutes, add phthalate, a...

Embodiment 3

[0041] A high-elastic anti-aging car door seal, made of the following raw materials in parts by weight: polyether polyol 79, polyurethane 73, foamed silica gel 48, polyimide 33, isooctyltriethoxysilane 30, ortho Phthalate 19, azodicarbonamide 16, tricalcium phosphate 10, nano titanium dioxide 4, nano zinc oxide 4.

[0042] The polyimide is polycondensation type aromatic polyimide.

[0043] A preparation method of a high-elastic anti-aging car door sealing strip, comprising the following steps:

[0044] (1) Add polyether polyol and polyurethane into the reaction kettle after mixing, heat slowly until completely melted at a heating rate of 2°C / min, and keep stirring for 30 minutes to obtain mixture A;

[0045](2) Add foamed silica gel and polyimide into the reaction kettle, heat until completely melted while stirring, and then continue to heat and stir for 40 minutes to obtain mixture B;

[0046] (3) Add mixture B to mixture A, heat and stir for 25 minutes, add phthalate, azod...

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PUM

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Abstract

The invention mainly relates to the technical field of vehicle product processing, and discloses a high-elasticity anti-aging vehicle door sealing strip, which is prepared from the following raw materials: polyether polyol, polyurethane, a foamed silica gel, polyimide, isooctyltriethoxysilane, phthalate, azodicarbonamide, tricalcium phosphate, nanometer titanium dioxide, and nanometer zinc oxide.According to the present invention, the high-elasticity anti-aging vehicle door sealing strip has characteristics of strong elasticity, strong compression deformation resistance, water resistance, dust resistance, sound resistance, thermal insulation and excellent aging resistance, and can effectively delay the corrosion of ultraviolet rays and air pollutants, and the service life can be prolongedto 6 years, such that the replacement frequency of the vehicle door sealing strip can be significantly reduced, the resources can be saved, the environment can be protected, and the use cost of the vehicle can be reduced; and the polyether polyol and the polyurethane are slowly mixed and heated, such that the raw materials are fully grafted so as to improve the elasticity and the strength of thesealing strip.

Description

technical field [0001] The invention mainly relates to the technical field of automotive supplies processing, in particular to a high-elastic anti-aging car door sealing strip. Background technique [0002] The door seal is a product that seals the door so that it is not easy to open, and plays the role of shock absorption, waterproof, sound insulation, heat insulation, dustproof, and fixing. It is mainly used in door frames, side windows, and front and rear gears. On the windshield, engine cover and trunk cover, it plays the role of waterproof, dustproof, sound insulation, temperature insulation, shock absorption, decoration, etc. At present, the door sealing strips used in automobiles have insufficient anti-aging performance, and they will wear off after 2 to 3 years of use. Aging phenomenon occurs, the elasticity decreases, the shock absorption effect decreases obviously, and the sealing performance becomes poor, so that the waterproof, dustproof, sound insulation and tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/10C08J9/36C08L71/02C08L75/04C08L83/04C08L79/08C08K13/02C08K5/12C08K3/32C08K3/22
CPCC08J9/0023C08J9/0061C08J9/0066C08J9/0071C08J9/0095C08J9/103C08J9/365C08J2371/02C08J2475/04C08J2479/08C08J2483/04
Inventor 李晓波
Owner 李晓波
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