A kind of heavy calcium carbonate powder surface modification method

A technology of heavy calcium powder and heavy calcium powder, applied in the field of polymer chemistry and physics, can solve the problems of easy aggregation of nanoparticles, affecting the performance of composite materials, affecting the use of materials, etc., and achieves simple process, excellent performance indicators and low cost Effect
CN103421142BInactive Publication Date: 2015-11-25HEZHOU UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEZHOU UNIV
Publication Date
2015-11-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for modifying heavy calcium carbonate powder (referred to as heavy calcium carbonate powder, the same below). The composition of the heavy calcium powder modifier of the present invention is polymaleic anhydride-acrylamide-n-butyl methacrylate and stearic acid, that is, a composite compatibilizer, through two modifications, the first modification is wet In-situ polymerization method, the hair modifier is polymaleic anhydride-acrylamide-n-butyl methacrylate, the second time is dry method, the modifier is stearic acid, and the simple method is to mix it fully first and dissolve it In the mixture of liquid paraffin and waste oil, the total amount of the above-mentioned organic matter in the heavy calcium powder accounts for about 1-3% (mass fraction) of the heavy calcium powder. The volume ratio of paraffin wax and waste oil is about 1, the mass ratio of polymaleic anhydride-acrylamide-n-butyl methacrylate and stearic acid is about 2, and the active heavy calcium powder of the present invention can be used as chlorinated polyvinyl chloride , polyvinyl chloride, polyethylene filler. The active heavy calcium powder of the present invention has good dispersion uniformity and low cost in the above resin, and is oriented to industrial production.
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Description

Technical field

[0001] The present invention is a high -molecular chemistry and physical field, which involves a method of heavy calcium powder surface modification. Background technique

[0002] The heavy calcium powder industry has become an important industrial branch of the non -metallic mining industry.According to the statistics of the Chinese Non -Mining Association Calcium Carbonate Special Committee, there are currently nearly 1,000 heavy calcium powder production and processing enterprises in my country.According to statistics, the national calcium powder production and sales in 2013 will increase by 5.26%year -on -year.After nearly two decades of development, the scale of heavy calcium powder has continued to expand.

[0003] When filling the stress center of the material when filling, it affects the use of materials; nanoparticles are easy to reunite. Covering a layer of modifiers on the surface of the heavy calcium powder can reduce the defects of the two and give fu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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