Composite material for polyurethane inflation-free inner tube and preparation method thereof
A non-inflatable inner tube, polyurethane technology, applied in the field of polyurethane application, can solve the problems affecting tire support, unfavorable installation, etc., achieve the effect of preventing tire blowout, simple and efficient production process, excellent elasticity and cushioning performance
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Embodiment 1
[0045] A component:
[0046] Weigh 100 parts of polytetrahydrofuran ether polyols (PTMG2000, BASF product) with an average functionality of 2 and a number average molecular weight of 2000, 8 parts of 1,4-butanediol, 0.2 parts of water, 0.6 parts of AK-7703, 0.9 parts Put ethylene glycol solution of triethylenediamine with a solid content of 33%, 0.03 part of dibutyltin dilaurate, and 0.35 part of CHINOX35 in a mixer, stir well, remove air bubbles in a vacuum, cool to 30-40°C and discharge, seal save.
[0047] B component:
[0048] With 60 parts of average functionality=2, polytetrahydrofuran polyol (PTMG2000, BASF product) of number average molecular weight=2000 and 55 parts of average functionality=3, the polyether polyol of number average molecular weight=6000 (KE-810, can Leah Polyether Co., Ltd.), and 30ppm of phosphoric acid were dehydrated under vacuum (-0.09MPa) at 110°C for 2 hours to ensure that the moisture content was less than 0.05%, then cooled to 50°C, added 85...
Embodiment 2
[0051] A component:
[0052] Take 90 parts of polyether polyols (10LD83E, Shandong Bluestar Dongda Chemical Co., Ltd.) with an average functionality of 3 and a number average molecular weight of 6000, 10 parts of POP40 (Shandong Bluestar Dongda Polyurethane Co., Ltd.) 14 parts, 1,4-butanediol, 0.35 parts of water, 0.6 parts of LK-221, 1 part of ethylene glycol solution of triethylenediamine with a solid content of 33%, 0.03 parts of dibutyltin dilaurate, 0.2 parts of CHINOX35 in a mixer , stir evenly, remove air bubbles in a vacuum, cool down to 30-40°C and discharge, and store in a sealed container.
[0053] B component:
[0054] 100 parts of polytetrahydrofuran ether polyol (PTMG2000, BASF product) with average functionality = 2, number average molecular weight = 2000 and 40ppm of phosphoric acid were dehydrated at 110°C for 2 hours under vacuum (-0.09MPa) to ensure that the moisture content was less than 0.05% , then lower the temperature to 50°C, add 120 parts of pure MDI,...
Embodiment 3
[0057] A component:
[0058] Take 80 parts of polytetrahydrofuran ether polyols (PTMG2000, South Korea Hyosung Chemical Co., Ltd.) with an average functionality of 2 and a number average molecular weight of 2000 respectively, and weigh 20 parts of polytetrahydrofuran ether polyols with an average functionality of 3 and a number average molecular weight of 6. Ether polyol (3600, Shandong Bluestar Dongda Chemical Co., Ltd.) 14 parts, 1,4-butanediol, 2 parts of ethylene glycol, 0.4 part of water, 0.6 part of LK-221, 0.6 part of three The ethylene glycol solution of ethylenediamine, 0.04 parts of dibutyltin dilaurate, and 0.3 parts of CHINOX35 are placed in a mixer, stirred evenly, vacuumed to remove air bubbles, cooled to 30-40°C and discharged, sealed for storage.
[0059] B component:
[0060] With 50 parts of average functionalities=2, polytetrahydrofuran ether polyol (PTMG2000, BASF product) of number-average molecular weight=2000 and 50 parts of average functionalities are ...
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