Method for preparing blend composite material by virtue of performing blending modification on kaolin/white carbon black
A composite material and silica technology, which is used in the deep processing, application and composite material fields of non-metallic minerals, can solve the problems of high processing cost and insufficient comprehensive performance of silica filling alone, and is beneficial to industrial application and solves comprehensive problems. The effect of insufficient performance and low energy consumption
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[0052] Example 1:
[0053] The No. 1 kaolin sample used in Example 1 comes from Maoming, Guangdong. The particle size characteristics of the kaolin sample: -2μm content 60.07%, -5μm content 96.79%, -10μm content 99.96%.
[0054] The specific modification process, conditions and steps are as follows: Put No. 1 kaolin sample and white carbon black in a high-speed mixer at a weight ratio of 3:2, heat and stir, and when the temperature reaches 90°C, add the weight of the blended filler 0.5% coupling agent WD-81, control the temperature at 88~92℃; after 3~5min, add 1.0% coupling agent WD-50 of blending filler weight; when the temperature reaches 100℃, add blending filler weight 1.5 % Stearic acid, control the temperature at 98~102℃, and stir for 20min to prepare kaolin / silica modified filler.
[0055] The prepared No. 1 kaolin / silica modified filler was mixed according to the following formula: natural rubber, 20 parts; styrene butadiene rubber, 45 parts; butadiene rubber, 35 parts; ind...
Example Embodiment
[0059] Example 2:
[0060] The No. 2 kaolin sample used in Example 2 comes from Maoming, Guangdong. The kaolin sample particle size characteristics: -2μm content 49.12%, -5μm content 90.49%, -10μm content 98.73%.
[0061] The specific modification process, conditions and steps: the same as in Example 1.
[0062] The prepared No. 2 kaolin / white carbon black modified filler was mixed according to the formula in Example 1. The next piece is mixed and vulcanized after being left for 12 hours.
[0063] After the mixed rubber is sliced, it is vulcanized on a 0.25MN semi-automatic pressure forming machine. The vulcanization temperature is 145~150℃, the vulcanization time is 8min, and the vulcanization pressure is 15.5MPa. The vulcanized rubber is parked for 24 hours, sliced and sampled, and the mechanical properties are tested.
[0064] Use the National Standard of the People’s Republic of China "Determination of the Tensile Stress and Strain Properties of Vulcanized Rubber or Thermoplast...
Example Embodiment
[0066] Example 3:
[0067] The No. 3 kaolin sample used in Example 3 was stripped kaolin from Beihai, Guangxi. The particle size characteristics of the kaolin sample: -2μm content 36.94%, -5μm content 79.67%, -10μm content 95.07%.
[0068] The specific modification process, conditions and steps: the same as in Example 1.
[0069] The prepared No. 3 kaolin / white carbon black modified filler was mixed according to the formula in Example 1. The next piece is mixed and vulcanized after being left for 12 hours.
[0070] After the mixed rubber is sliced, it is vulcanized on a 0.25MN semi-automatic pressure forming machine. The vulcanization temperature is 145~150℃, the vulcanization time is 8min, and the vulcanization pressure is 15.5MPa. The vulcanized rubber is parked for 24 hours, sliced and sampled, and the mechanical properties are tested.
[0071] Use the National Standard of the People’s Republic of China "Determination of the Tensile Stress and Strain Properties of Vulcanized Rub...
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