Modified calcium carbonate serving as sound absorbing filler and preparation method thereof

A calcium carbonate modification technology, applied in fibrous fillers, chemical instruments and methods, inorganic pigment treatment, etc., can solve problems such as defects, nano-calcium carbonate temperature window becomes smaller, cracking, etc., to achieve large specific surface area, excellent Sound-absorbing performance, the effect of increasing dispersion performance

Active Publication Date: 2014-09-10
广西贺州市科隆粉体有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of dispersants and surface modifiers greatly reduces the temperature window of nano-calcium carbonate, because commonly used dispersants and coupling agents are easy to decompose at high temperatures, causing bubbles, cracks, defects, deformation, etc., thus Affect the appearance, heat resistance and mechanical properties of materials

Method used

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  • Modified calcium carbonate serving as sound absorbing filler and preparation method thereof

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[0012] specific implementation plan

[0013] The present invention will be described in detail below through specific examples.

[0014] A modified calcium carbonate that can be used as a sound-absorbing filler, prepared from the following raw materials in parts by weight (kg): calcium carbonate 90, nano hollow microspheres 4, aluminum silicate fiber cotton 3, wild rice straw powder 3, expanded pearls Rock 2, activated alumina 3, ammonium carbonate 2, polycarbonate 6, natural rubber latex 5, sodium α-alkenyl sulfonate 1, modified titanium dioxide 3;

[0015] The modified titanium dioxide is made of the following raw materials in parts by weight (kg): aluminum hydroxide 2, nano titanium dioxide 50, silicon carbide 4, methyl methacrylate 5, antimony trioxide 3, terephthalic acid 3, horse Dioctyl maleate 3, ethylene glycol 5, water 50; the preparation method is to first add methyl methacrylate, nano-titanium dioxide, aluminum hydroxide, ethylene glycol, and water and stir evenly...

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Abstract

The invention discloses modified calcium carbonate serving as a sound absorbing filler. The modified calcium carbonate is characterized by being prepared from the following raw materials in parts by weight: 90-95 parts of calcium carbonate, 4-6 parts of nanometer hollow microspheres, 3-5 parts of aluminum silicate fiber cotton, 3-4 parts of zizania aquatica straw powder, 2-4 parts of expanded perlite, 3-4 parts of activated aluminum oxide, 2-3 parts of ammonium carbonate, 6-8 parts of polycarbonate, 5-6 parts of natural latex, 1-2 parts of alpha-vinyl sodium sulfonate and 3-4 parts of modified titanium dioxide. The modified calcium carbonate disclosed by the invention has excellent sound absorption performance due to addition of the nanometer hollow microspheres and the aluminum silicate fiber cotton, has a large specific surface area as well as sound absorption and adsorption effects due to addition of plant fibers and natural substances, and has increased dispersion performance due to addition of the modified titanium dioxide, so the modified calcium carbonate is applicable to production of additives including sound absorbing bricks, sound absorbing plates, coatings and the like.

Description

technical field [0001] The invention relates to the field of industrial fillers, in particular to a modified calcium carbonate which can be used as a sound-absorbing filler and a preparation method thereof. Background technique [0002] Calcium carbonate is a very important functional inorganic filler, which is widely used in industrial fields such as plastics, rubber, coatings and papermaking. In the application field of calcium carbonate, most products belong to the category of polymers, such as plastics, rubber, adhesives, coatings, etc., and occupy an important market share. Modifiers play an important role in the performance and application of nano calcium carbonate. For example, the addition of dispersant can reduce the agglomeration of nanoparticles and improve the dispersion; the addition of surface modifier can improve the compatibility of nano-calcium carbonate in the polymer system. It can be seen that dispersants and surface modifiers are crucial for the applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/06C09C3/10C09C3/08C09C1/36
Inventor 朱蕊许小林
Owner 广西贺州市科隆粉体有限公司
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