Preparation method of heat-preservation and heat-insulation tent composite fabric
A composite fabric, thermal insulation technology, applied in the field of textile fabrics, can solve the problems of high thermal conductivity and achieve the effects of high melting temperature, strong tolerance, good mechanical properties and flexibility
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Embodiment 1
[0030] In parts by weight, weigh 10 parts of ethyl orthosilicate, 5 parts of polyimide, 20 parts of absolute ethanol, 1 part of hydrochloric acid solution with a mass fraction of 1%, 0.5 parts of N,N-dimethylformaldehyde Amide, 0.80 parts by mass fraction of 2% ammonia water, 60 parts of deionized water, mixed ethyl orthosilicate, absolute ethanol and deionized water, and magnetically stirred at a stirring speed of 300r / min for 8min to obtain the reaction solution A , add 1% hydrochloric acid solution and polyimide into the reaction solution A, continue to stir for 25 minutes to obtain the reaction solution B, hydrolyze the reaction solution B at a water bath temperature of 30°C for 30 minutes, and obtain the mixed solution. Add N,N-dimethylformamide and ammonia water with a mass fraction of 2% in the mixed solution dropwise, control the dropping rate to 0.025mL / min, and magnetically stir at a stirring rate of 500r / min for 1h to obtain a mixed sol; The sol was replaced in n-bu...
Embodiment 2
[0032] In parts by weight, weigh 15 parts of ethyl orthosilicate, 8 parts of polyimide, 25 parts of absolute ethanol, 2 parts of 1% hydrochloric acid solution, 0.6 parts of N,N-dimethylformaldehyde Amide, 1.0 parts of ammonia water with a mass fraction of 2%, 70 parts of deionized water, mixed ethyl orthosilicate, absolute ethanol and deionized water, and magnetically stirred at a stirring speed of 350r / min for 9min to obtain the reaction solution A , add 1% hydrochloric acid solution and polyimide into the reaction solution A, and continue to stir for 28 minutes to obtain the reaction solution B. The reaction solution B is hydrolyzed at a water bath temperature of 32°C for 40 minutes to obtain a mixed solution. Add N,N-dimethylformamide and ammonia water with a mass fraction of 2% in the mixed solution dropwise, control the dropping rate to 0.028mL / min, and magnetically stir for 1h at a stirring speed of 600r / min to obtain a mixed sol; The sol was replaced in n-butanol and n-...
Embodiment 3
[0034] In parts by weight, weigh 20 parts of tetraethyl orthosilicate, 10 parts of polyimide, 30 parts of absolute ethanol, 3 parts of 1% hydrochloric acid solution, 0.7 parts of N, N-dimethylformaldehyde Amide, 1.2 parts of ammonia water with a mass fraction of 2%, 80 parts of deionized water, mixed ethyl orthosilicate, absolute ethanol and deionized water, and magnetically stirred at a stirring speed of 400r / min for 10min to obtain the reaction solution A , add 1% hydrochloric acid solution and polyimide into the reaction solution A, and continue to stir for 30 minutes to obtain the reaction solution B. The reaction solution B is hydrolyzed at a water bath temperature of 35°C for 50 minutes to obtain a mixed solution. Add N,N-dimethylformamide and ammonia water with a mass fraction of 2% in the mixed solution dropwise, control the dropping rate to 0.030mL / min, and magnetically stir for 2h at a stirring rate of 700r / min to obtain a mixed sol; The sol was replaced in n-butanol...
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