Natural rubber composite material and preparation method thereof
A technology of natural rubber and composite materials, applied in the field of rubber reinforcement, can solve problems such as the decline of wear resistance of rubber materials
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0064] The present invention also provides a kind of preparation method (A+B method) of natural rubber composite material, comprises the following steps:
[0065] mixing the white carbon black dispersion with the first natural rubber to obtain a mixed material containing white carbon black;
[0066] Mixing the mixed material containing white carbon black with the first coagulant to obtain a white carbon black masterbatch after solidification;
[0067] mixing the silica dispersion with the second natural rubber to obtain a mixed material containing silica;
[0068] Mixing the mixed material containing silica with a second coagulant to obtain a silica masterbatch after solidification;
[0069] After mixing and vulcanizing the silica masterbatch, silica masterbatch, carbon black, coupling agent, softener, antioxidant, active agent, accelerator and vulcanizing agent, a natural rubber composite material is obtained;
[0070] Described white carbon black, the first natural rubber,...
Embodiment 1
[0105] Add 45g of white carbon black powder to 360g of water, use a high-shear homogenizer, disperse the resulting mixed material at 10,000rpm for 30min, add it to 400g of fresh latex with a dry content of 20%, and mechanically stir at 500rpm for 30min , add 32g of acetic acid solution with a mass fraction of 5% to solidify for 10min, dehydrate and dry at 100°C for 4h to obtain a white carbon black masterbatch; add 5g of silica to 50g of water, and use a high-shear homogenizer at 10,000rpm The obtained mixed material was dispersed for 30 minutes, added to 100 g of fresh latex with a dry content of 20%, mechanically stirred at 500 rpm for 30 minutes, and 8 g of acetic acid solution with a mass fraction of 5% was added to solidify for 10 minutes, dehydrated and dried at 100 ° C. After 4 hours, the white carbon black masterbatch was obtained. Then the silica masterbatch of 125g preparation and the silica masterbatch of 25g preparation, with 5g carbon black N330, 4g bis(triethoxyp...
Embodiment 2
[0107] Add 45g of white carbon black powder and 5g of silica to 360g of water, use a micro-jet homogenizer to disperse the obtained mixed material at 200MPa, the number of cycles is 5 times, and add it to 500g of 20% dry In fresh latex, mechanically stir at 500rpm for 30min, add 40g of formic acid solution with a mass fraction of 2% for coagulation for 30min, dehydrate and dry at 100°C for 4h to obtain a silica / silica masterbatch. Then the white carbon black / silica masterbatch of 150g preparation, with 5g carbon black N330, 4g bis(triethoxypropylsilane) tetrasulfide, 1g antioxidant RD, 4gTDAE oil, 1g stearic acid, 3gZnO , 1.5g of CZ, 2g of D and 1.5g of sulfur were mixed and vulcanized according to a conventional mixing process to obtain a rubber composite material.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More