Calcium sulfate whisker modified polyvinylalcohol composite material and preparation process thereof
A technology of calcium sulfate whisker and polyvinyl alcohol, which is applied in the field of calcium sulfate whisker modified polyvinyl alcohol composite material and its preparation process, and achieves the effects of simple preparation process, good heat resistance and oxygen barrier, and high strength
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[0018] Example 1
[0019] The calcium sulfate whisker modified polyvinyl alcohol composite material of this embodiment is made of the following parts by weight of raw materials: 83 parts of polyvinyl alcohol, 10 parts of calcium sulfate whiskers with a diameter of 10-20 μm, and surface modifier stearic acid 2 parts, 4 parts of plasticizer DBP, 1 part of lubricant paraffin.
[0020] Preparation:
[0021] (1) Add calcium sulfate whiskers and surface modifier stearic acid to a high-speed mixer and mix for 10 minutes to obtain modified calcium sulfate whiskers;
[0022] (2) Add polyvinyl alcohol, plasticizer DBP and lubricant paraffin to a high-speed mixer and mix for 5 minutes to obtain a mixture of polyvinyl alcohol, plasticizer DBP, lubricant paraffin and modified calcium sulfate whiskers;
[0023] (3) The mixture obtained in step (2) is extruded and pelletized in a co-rotating parallel twin-screw extruder. The process parameters are as follows: the temperature in the first zone is 115°...
Example Embodiment
[0026] Example 2
[0027] The calcium sulfate whisker modified polyvinyl alcohol composite material of this embodiment is made of the following parts by weight: 78 parts of polyvinyl alcohol, 15 parts of calcium sulfate whiskers with a diameter of 10-20 μm, and surface modifier sodium laurate 2 parts, 4 parts of plasticizer DOP, 1 part of lubricant stearic acid.
[0028] Preparation:
[0029] (1) Add calcium sulfate whiskers and surface modifier sodium laurate to a high-speed mixer and mix for 10 minutes to obtain modified calcium sulfate whiskers;
[0030] (2) Add polyvinyl alcohol, plasticizer DOP and lubricant stearic acid to a high-speed mixer and mix for 5 minutes to obtain polyvinyl alcohol, plasticizer DOP, lubricant stearic acid and modified calcium sulfate crystals Beard mixture
[0031] (3) The mixture obtained in step (2) is extruded and pelletized in a co-rotating parallel twin-screw extruder. The process parameters are as follows: temperature in zone 1 is 115°C, temperatu...
Example Embodiment
[0034] Example 3
[0035] The calcium sulfate whisker modified polyvinyl alcohol composite material of this embodiment is made of the following parts by weight of raw materials: 73 parts of polyvinyl alcohol, 20 parts of calcium sulfate whiskers with a diameter of 10-20 μm, and surface modifier stearic acid 2 parts, 4 parts of plasticizer epoxy soybean oil, 1 part of lubricant butyl stearate.
[0036] Preparation:
[0037] (1) Add calcium sulfate whiskers and surface modifier stearic acid to a high-speed mixer and mix for 10 minutes to obtain modified calcium sulfate whiskers;
[0038] (2) Add polyvinyl alcohol, plasticizer epoxy soybean oil and lubricant butyl stearate to a high-speed mixer and mix for 5 minutes to obtain polyvinyl alcohol, plasticizer epoxy soybean oil, and lubricant hard Mixture of butyl fatty acid and modified calcium sulfate whiskers;
[0039] (3) The mixture obtained in step (2) is extruded and pelletized in a co-rotating parallel twin-screw extruder. The proces...
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