ANF-reinforced HEC film composite material and preparation method thereof
A thin film composite material and film-forming liquid technology, applied in the field of HEC thin film composite material and its preparation, can solve the problems of poor thermal stability and hydrophobicity of HEC thin film composite material, weak mechanical properties of HEC thin film, etc. Hydrophobicity, the effect of reducing the degree of branching
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[0027] The invention provides a kind of preparation method of the HEC film composite material that ANF strengthens, comprises the following steps:
[0028] Step 1. Mix hydroxyethyl cellulose with deionized water, let it stand for 1-12 hours; stir for 1-5 hours, and the stirring speed is 300-500r / min to obtain hydroxyethyl cellulose with a mass concentration of 1%-3%. Cellulose solution;
[0029] Mixing the nano-para-aramid fiber with deionized water, stirring for 1-5h, the stirring rate is 300-500r / min, to obtain a nano-para-aramid fiber solution with a mass concentration of 0.1-0.3;
[0030] Step 2. Add glutaraldehyde to the nano-para-aramid fiber solution, stir for 1-5 hours, and stir at a rate of 300-500r / min to obtain a mixed system A; wherein, glutaraldehyde and nano-para-aramid fiber solution The mass ratio is (0.1-0.3): (100-300);
[0031] Step 3. Mix the mixed system A with the hydroxyethyl cellulose solution, stir for 1-3 hours at a stirring rate of 300-500 r / min, a...
Embodiment 1
[0035] The preparation method of the HEC thin film composite material of a kind of ANF reinforcement described in embodiment 1, comprises the following steps:
[0036] Step 1. Mix hydroxyethyl cellulose and deionized water, let stand to moisten and expand for 1 hour, and then stir for 1 hour at a stirring rate of 300 r / min to obtain a hydroxyethyl cellulose solution with a mass concentration of 1%.
[0037] Step 2, mix the nano-para-aramid fiber with deionized water, stir for 1 hour, the stirring rate is 300r / min, and prepare a solution with a mass concentration of 0.1% nano-para-aramid fiber;
[0038] Step 3. Add 0.1 g of glutaraldehyde crosslinking agent to 100 g of the nano-para-aramid fiber solution prepared in step 2, stir for 1 h, and the stirring speed is 300 r / min to obtain the mixed system A;
[0039] Step 4. Mix 10 g of the mixed system A in step 3 with 100 g of the hydroxyethyl cellulose solution in step 1, stir for 1 h at a stirring rate of 300 r / min; ultrasonicall...
Embodiment 2
[0044] The preparation method of the HEC thin film composite material of a kind of ANF reinforcement described in embodiment 2, comprises the following steps:
[0045] Step 1. Mix hydroxyethyl cellulose and deionized water, let stand to moisten and expand for 5 hours, and then stir for 3 hours at a stirring rate of 400 r / min to obtain a hydroxyethyl cellulose solution with a mass concentration of 1%.
[0046] Step 2, mix the nano-para-aramid fiber with deionized water, stir for 3 hours, the stirring rate is 400r / min, and prepare a solution with a mass concentration of 0.2% nano-para-aramid fiber;
[0047]Step 3. Add 0.2 g of glutaraldehyde cross-linking agent to 200 g of the nano-para-aramid fiber solution prepared in step 2, stir for 3 h, and the stirring speed is 400 r / min to obtain the mixed system A;
[0048] Step 4. Mix 15 g of the mixed system A in step 3 with 200 g of the hydroxyethyl cellulose solution in step 1, stir for 3 hours at a stirring rate of 400 r / min; ultras...
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