Halloysite/montmorillonoid composite powder and preparation method and application thereof
A composite powder, montmorillonite technology, applied in the field of inorganic powder, can solve the problems of polymer melting and discoloration, easy thermal decomposition, poor heat resistance, etc., to achieve good heat resistance, no bad smell, improve rigidity Effect
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Embodiment 1
[0028] Mix 1000 grams of sodium-based montmorillonite (produced by Qinghe Chemical Plant, Zhangjiakou, Hebei Province) with 19000 milliliters of water at a concentration of 5 wt %, and stir and disperse through a high-shear disperser (produced by FLUKO, model FA90, with a rotating speed of 3000 rpm) for 1 Hours and placed for 7 days, so that the montmorillonite fully swells in water and peels off. Then disperse again through a high shear disperser to obtain a stable suspension with sufficient peeling between the layers. 1,000 grams of halloysite (Fuyuan Kaolin Co., Ltd., Danjiangkou City, Hubei Province) and 19,000 milliliters of water were stirred and dispersed by a high-shear disperser (same as above) for 1 hour to form a 5 wt % halloysite suspension. Get 1330 grams of dispersed montmorillonite suspensions and 70 grams of halloysite suspensions and mix them in a ratio of 95:5 of their dry weight, and use a laboratory high-shear dispersing emulsifier (produced by FLUKO, model...
Embodiment 2
[0030] The preparation of montmorillonite suspension and halloysite suspension is the same as in Example 1, the only difference is that the standing time of montmorillonite suspension is 10 days, and 1050 grams of montmorillonite suspension and 350 grams of halloysite suspension are taken That is, they were mixed according to the ratio of 75:25 of their dry weight, and the rest were the same as in Example 1. After spray drying, the 2# composite powder with a weight ratio of montmorillonite and halloysite of 75 / 25 was obtained.
Embodiment 3
[0032] The preparation of montmorillonite suspension and halloysite suspension is the same as in Example 1, 700 grams of montmorillonite suspension and 700 grams of halloysite suspension are mixed according to the proportioning ratio of 50:50 of their respective dry weights, and all the other are mixed with the implementation Same as Example 1, the 3# composite powder whose weight ratio of montmorillonite and halloysite was 50 / 50 was obtained through spray drying.
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