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A kind of talc, sericite and silicone oil intercalation composite material and preparation method thereof

A technology of composite materials and sericite, applied in silicon compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of reduced mechanical strength of plastic materials, low filling degree of natural minerals, difficulty in completely changing the hydrophilicity of mineral surfaces, etc.

Inactive Publication Date: 2016-04-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of mechanical crushing, minerals are easy to agglomerate into secondary particles, and it is difficult to achieve the expected particle size, and it is difficult to completely change the inherent hydrophilicity of the mineral surface through surface modification, so the filling degree of natural minerals in plastic materials is very low. And after filling, the mechanical strength of the plastic material is often reduced

Method used

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Examples

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preparation example Construction

[0014] The steps of the preparation method of talc, sericite and silicone oil intercalation composite material are as follows:

[0015] 1) To the separated and purified talc or sericite minerals, add 5 to 10 times the weight of an inorganic acid with a mass percentage concentration of 3% to 10%, and then add 0.5% to 2% of the mineral weight of sodium dithionite, and stir evenly Make a suspension slurry, react at room temperature for 6 to 24 hours, and keep stirring during the period;

[0016] 2) Filter or centrifugally dehydrate, wash 2 to 4 times, and dry at 60 to 80°C;

[0017] 3) After cooling to room temperature, add 0.8 to 1.5 parts of silicone oil to each part by weight of the dehydrated material in step 2), stir well and grind in a high-shear grinder for 1 to 2 hours to prepare talc, sericite and silicone oil Intercalated composites.

[0018] The inorganic acid is one or more of hydrochloric acid and sulfuric acid. The high-shear mill is a ball mill, a roller mill, a...

Embodiment 1

[0020] 1) After separation and purification of talc, add 10 times the weight of hydrochloric acid with a concentration of 10% by mass, then add sodium dithionite with a weight of 1.0% of the talc, stir evenly to make a suspension slurry, and react at room temperature for 6 hours. keep stirring;

[0021] 2) Filter and dehydrate, wash twice, and dry at 60°C;

[0022] 3) After cooling to normal temperature, add 1 part of silicone oil to each part by weight of the dehydrated material in step 2), stir evenly and grind in a ball mill for 1 hour to prepare a composite material intercalated with talc, sericite and silicone oil.

Embodiment 2

[0024] 1) After separation and purification of talc, add 5 times the weight of nitric acid with a mass percent concentration of 8%, and then add sodium dithionite with a weight of 1.0% of the talc, stir evenly to make a suspension slurry, and react at room temperature for 6 hours. keep stirring;

[0025] 2) Centrifugal dehydration, wash 4 times, and dry at 60°C;

[0026] 3) After cooling to normal temperature, add 1 part of silicone oil to each part by weight of the dehydrated material in step 2), stir evenly and grind in a ball mill for 1 hour to prepare a composite material intercalated with talc, sericite and silicone oil.

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Abstract

The invention discloses a talc, sericite and silicone oil intercalation composite material and a preparation method thereof. The talc, sericite and silicone oil intercalation composite material is a composite material formed by intercalating polydimethylsiloxane among mineral crystallization structure layers. The preparation method comprises the following steps: 1) performing activation and impurity removal to talc and sericite by using an organic acid and a reducing agent; 2) dehydrating and drying after performing acid activation; and 3) commonly grinding the talc, sericite and silicon oil to form an intercalation compound, wherein the obtained product is a talc, sericite and silicone oil intercalation composite material. The prepared composite material can be mixed together with a plastic material, so that the mechanical strength of the mixture can be greatly enhanced, the filling degree of the mineral in the plastic material can be improved, and the talc, sericite and silicone oil intercalation composite material is simple to operate and low in cost.

Description

technical field [0001] The invention relates to a talc, sericite and silicone oil intercalation composite material and a preparation method thereof. Background technique [0002] Talc and sericite are widely distributed layered silicate minerals. Compared with other minerals with similar structures, they usually have finer crystals, and their surfaces have better affinity with organic polymer materials, so they are often used as Additives for plastic materials. Before being used as plastic fillers, such minerals generally need to be ultrafinely pulverized and modified to increase their blending and affinity with plastic materials. In the process of mechanical crushing, minerals are easy to agglomerate into secondary particles, and it is difficult to achieve the expected particle size, and it is difficult to completely change the inherent hydrophilicity of the mineral surface through surface modification, so the filling degree of natural minerals in plastic materials is very...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/06C08K3/34C01B33/44
Inventor 叶瑛秦文莉纪晓声陈雪刚夏枚生闫康康李林蔚
Owner ZHEJIANG UNIV
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