Smooth-type surface-modified calcium carbonate and preparation method thereof

A technology of surface modification and calcium carbonate, applied in chemical instruments and methods, dyeing organosilicon compound treatment, inorganic pigment treatment, etc., can solve the problems of composite material mechanical properties decline, uniform dispersion, interface defects, etc., and achieve compatibility Good, enhanced moisture resistance, strong binding effect

Inactive Publication Date: 2014-10-08
广西民泰纳米科技有限公司
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Problems solved by technology

However, calcium carbonate particles have strongly hydrophilic hydroxyl groups distributed on the surface, which are alkaline, have different interfacial properties with organic polymer matrix materials, and have poor compatibility, making it difficult to disperse evenly in the matrix material and form a strong bond with the matrix material. Bonding force, resulting in interface defects between the two materials, reducing some mechanical properties of the composite material

Method used

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  • Smooth-type surface-modified calcium carbonate 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 smooth surface-modified calcium carbonate, prepared from the following raw materials in parts by weight (kg): calcium carbonate 85, octylphenol polyoxyethylene ether 1, isopropanol 3, dimethyl silicone oil 1, silane coupling Agent kh-5701, polyurethane resin 5, polyvinyl chloride 4, sodium carbonate 1, bis-dimethylaminoethyl ether 0.8, nano-zinc oxide 2, hectorite powder 2, 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 to form a ...

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Abstract

The invention discloses a smooth-type surface-modified calcium carbonate and preparation method thereof. The smooth-type surface-modified calcium carbonate is characterized by being prepared from following raw materials, by weight, 85-90 parts of calcium carbonate, 1-2 parts of octaphenyl polyethenoxy ether, 3-5 parts of isopropanol, 1-1.5 parts of polydimethylsiloxane, 1-2 parts of a silane coupling agent kh-570, 5-7 parts of polyurethane resin, 4-6 parts of polyvinyl chloride, 1-2 parts of sodium carbonate, 0.8-1.2 parts of bis(2-dimethylaminoethyl)ether, 2-4 parts of nanometer zinc oxide, 2-3 parts of hectorite powder and 3-4 parts of modified titanium dioxide. Through addition of a surfactant and oil-based substances to calcium carbonate, a bright degree and an anti-damp performance of the calcium carbonate is enhanced. A high-molecular polymer is used for surface modification on the surface of the calcium carbonate. Because a plurality of active groups exist, the surface-modified calcium carbonate has a relative good compatibility with various substances and a strong binding force is generated so that a product, which employs the surface-modified calcium carbonate as filling materials, is not reduced in performances. In addition, through addition of the modified titanium dioxide, a dispersing performance is improved.

Description

technical field [0001] The invention relates to the field of industrial fillers, in particular to a smooth surface-modified calcium carbonate 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. However, calcium carbonate particles have strongly hydrophilic hydroxyl groups distributed on the surface, which are alkaline, have different interfacial properties with organic polymer matrix materials, and have poor compatibility, making it difficult to disperse evenly in the matrix material and form a strong bond with the matrix material. The bonding force causes the interface defect between the two materials, which reduces some mechanical properties of the composite material. Changing the performance of traditional calcium carbonate products and improving their application performance to meet the needs of new ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/08C09C3/10C09C3/12C09C3/06C09C3/04
Inventor 王俊华朱传路
Owner 广西民泰纳米科技有限公司
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