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The reinforcing effect test for nano calcium carbonate in rubber products

The reinforcing effect test for nano calcium carbonate in rubber products

Filled Nano Calcium Carbonate CCR to natural rubber (NR), styrene-butadiene rubber (SBR) and butyl rubber (BR) were prepared and tested for their reinforcing effect. The results showed that with the increase of the amount of Nano Calcium Carbonate CCR, the tensile strength of BR and SBR was increased obviously, while that of NR was the first to increase slowly and decrease obviously after the dosage was more than 60. SBR and BR tear strength is not as significant as NR compound growth. In SBR and BR compounds, with the increase in the amount of CCR, the curing time was significantly shorter. Used our coated nano calcium carbonate NCC-501 and its nanocomposites with natural rubber were prepared by using reactive modifier. The results showed that the new nano-calcium carbonate NCC-501 was dispersible in natural rubber, and the rubber body Forming a good combination of natural rubber has a significant reinforcement effect, the effect is better than stearic acid coated industrial nano calcium carbonate CCR . 

The research of nano calcium carbonate on the addition of styrene-butadiene rubber reinforcement effect. When using nano calcium carbonate NCC-501 with the increase in the amount of dissolved styrene-butadiene rubber vulcanization speed, significantly improved performance, and hardness is little change. Nano calcium carbonate NCC-501 and high wear-resistant carbon black and with a synergistic effect, can make the physical properties of the compound to meet the actual requirements. 

Use nitrile rubber as the base material, nano calcium carbonate and conventional calcium carbonate as additives, the mixing process and nano-calcium carbonate and conventional calcium carbonate on the impact of nitrile rubber were studied. Experiments show that Nano Precipitated Calcium Carbonate NCC-501 can not only be used as a filler, but also greatly improve the performance of nitrile rubber, and compatibility with conventional calcium carbonate is also better, but in the mixing process, must be fully processed to ensure that It is evenly distributed in the compound. We Studied the effect of nano CaCO3 NCC-501 as filler on the properties of RTV silicone rubber. The results show that nano-calcium carbonate NCC-501 can improve the crosslinking density of RTV silicone rubber and improve the mechanical properties of RTV silicone rubber. As the specific surface area is relatively large, The change trend of viscosity and viscosity is relatively large, which has certain influence on process performance.


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