Preparation method of mica powder modified foam material
A foaming material and mica powder technology, applied in the field of foaming material preparation, can solve problems such as poor heat resistance and cold resistance, poor product dimensional stability, poor molding processability, etc., to reduce mechanical properties, improve molding processability, increase Effects of Steel Toughness and Modulus
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[0014] Example 1
[0015] The preparation method in the present invention includes the following steps:
[0016] In the first step, the raw sericite powder in the tailings is washed, stripped, flotated, and magnetically separated to remove impurities to obtain refined sericite powder. Then the water is removed in the dryer, and the dehydration temperature in the device is controlled at 600-800℃ , Time 30-50min, make the refined sericite powder moisture content ≤ 0.4%, particle size distribution 0.2 microns -1.0 microns.
[0017] The second step is the modification process of ultrafine sericite powder: the modification is carried out in a continuously variable speed high-speed stirring kettle (produced by Qingdao Sanyi Plastic Machinery Co., Ltd.), and the refined sericite powder formed in step 1 is combined with a composite coupling The agent is stirred together in a continuously variable high-speed stirring kettle. The modification process conditions are: the temperature of the int...
Example Embodiment
[0026] Example 2
[0027] In the first step, the raw sericite powder in the tailings is washed, stripped, flotated, and magnetically separated to remove impurities to obtain refined sericite powder. Then the water is removed in the dryer, and the dehydration temperature in the device is controlled at 600-800℃ , Time 30-50min, make the refined sericite powder moisture content ≤ 0.4%, particle size distribution 0.2 microns -1.0 microns.
[0028] The second step is the modification process of ultra-fine sericite powder: the modification is carried out in a continuously variable high-speed stirring kettle, and the refined sericite powder and the composite coupling agent formed in step 1 are combined in a continuously variable high-speed stirring kettle Medium stirring, the modification process conditions are: the temperature of the interlayer of the kettle wall is controlled at 100-115°C, the rotation speed of the main machine is 50-1200RPM, and the processing time is 15-25min.
[0029]...
Example Embodiment
[0035] Example 3
[0036] The preparation method includes the following steps:
[0037] In the first step, the raw sericite powder in the tailings is washed, stripped, flotated, and magnetically separated to remove impurities to obtain refined sericite powder, then water is removed in the dryer, and the dehydration temperature in the device is controlled at 500-700℃ , Time 40-60min, make the refined sericite powder moisture content ≤ 0.4%, particle size distribution 0.2 microns-0.4 microns.
[0038] The second step is the modification process of ultra-fine sericite powder: the modification is carried out in a continuously variable high-speed stirring kettle, and the refined sericite powder and the composite coupling agent formed in step 1 are combined in a continuously variable high-speed stirring kettle Medium agitation, the modification process conditions are: the temperature of the interlayer of the kettle wall is controlled at 100-115℃, the rotation speed of the main machine is ...
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