Rubber / modified microcrystalline cellulose composite material and preparation thereof
A technology of microcrystalline cellulose and composite materials, applied in the field of rubber, can solve the problem that cellulose molecules are difficult to dissolve, and achieve the effect of low cost
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Embodiment 1
[0052] The first step mixes 30g of plant microcrystalline cellulose with 1.2g, 25% mass of maleic anhydride aqueous solution, and stirs evenly;
[0053] The mixture of microcrystalline cellulose and maleic anhydride aqueous solution is charged into a three-necked flask and preheated at 25° C. for 60 minutes, and then nitrogen is blown;
[0054] The second step adds initiator cerium ammonium nitrate 0.003g, reacts 10 minutes;
[0055] In the third step, add 6 g of methyl methacrylate and butyl acrylate monomer mixture emulsified with 0.04 g of sodium dodecyl sulfonate, the mass ratio of methyl methacrylate and butyl acrylate is 1:1, and continue the reaction The modified microcrystalline cellulose product was obtained in 180 minutes, and the grafting rate and grafting efficiency were calculated according to the gravimetric method, and the results were shown in Table 2;
[0056] In the fourth step, 5 g of the obtained modified microcrystalline cellulose and 100 g (100 parts) of...
Embodiment 2
[0058] The first step is to mix 30g of plant microcrystalline cellulose and 24g of methacrylic acid aqueous solution, the mass fraction is 25%, and stir evenly; put the above-mentioned microcrystalline cellulose and methacrylic acid aqueous solution mixture into a three-necked flask at 100 ° Preheat for 15 minutes, and then pass nitrogen;
[0059] The second step adds initiator azobisisobutyrocyanide 0.9g, and reacts for 2 minutes;
[0060] In the third step, add 18 g of methyl methacrylate monomer emulsified with 0.1 g of polyoxyethylene octylphenol ether emulsifier, continue to react for 20 minutes to obtain the modified microcrystalline cellulose product, and calculate the grafting rate according to the weight method , grafting efficiency, the results are shown in Table 2;
[0061] In the fourth step, 70 g of the obtained modified microcrystalline cellulose and 100 g (100 parts) of styrene-butadiene rubber are mixed in a certain proportion on a double-roller open mill, and...
Embodiment 3
[0063] The first step is to mix 30g of plant microcrystalline cellulose with 6g of β-hydroxypropyl acrylate aqueous solution with a mass fraction of 25%, and stir evenly, and fill the mixture of microcrystalline cellulose and β-hydroxypropyl acrylate aqueous solution into three ports Preheat the flask at 65°C for 30 minutes, then pass nitrogen;
[0064] The second step adds initiator peroxybenzoic acid 0.5g, reacts 8 minutes;
[0065] The third step adds 12g methyl methacrylate and butyl acrylate monomer mixture emulsified with 0.012g N-oleoyl-N-methyl taurate sodium, the mass ratio of methyl methacrylate and butyl acrylate is 1:1, continue to react for 120 minutes to obtain the modified microcrystalline cellulose product, calculate the grafting rate and grafting efficiency according to the gravimetric method, and the results are shown in Table 2;
[0066] In the fourth step, 15 g of the obtained modified microcrystalline cellulose and 100 g of styrene-butadiene rubber (100 p...
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