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
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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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