Hydrophobic lipophilic surface-modified calcium carbonate and preparation method thereof

A surface modification, hydrophobic and lipophilic technology, applied in chemical instruments and methods, fibrous fillers, dyeing physical treatment, etc., can solve problems such as large specific surface area, high surface energy, and performance degradation of composite materials

Active Publication Date: 2014-11-05
QINGYANG COUNTY YONGCHENG CALCIUM IND
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  • Description
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  • Application Information

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Problems solved by technology

However, the surface of heavy calcium carbonate is hydrophilic and oleophobic, the specific surface area is large, the surface energy is high, and the particles are easily agglomerated. When directly or in large quantities fill

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  • Hydrophobic lipophilic surface-modified calcium carbonate and preparation method thereof

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[0013] Specific implementation plan

[0014] The present invention will be described in detail below through specific examples.

[0015] A hydrophobic and lipophilic surface modified calcium carbonate prepared from the following parts by weight (kg) of raw materials: calcium carbonate 90, glass fiber 2, polylactic acid 5, polydimethylsiloxane 2, epoxidized glycerin Triester 3, silica sol 3, wood tar 1, titanium tetrachloride 2, expanded perlite 2, modified titanium dioxide 2.5;

[0016] The modified titanium dioxide is made of the following parts by weight (kg) of raw materials: nanometer titanium dioxide 50, mica powder 2, crushed zeolite molecular sieve 4, ferrocene 5, mineral fiber 3, sodium pyrophosphate 2, pure acrylic emulsion 3, ring Oxybutyl oleate 3, phosphate 2, water 50; the preparation method is to first add pure acrylic emulsion, nano-titanium dioxide, mica powder, crushed zeolite molecular sieve, mineral fiber, water and stir evenly to form a suspension, and then immed...

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Abstract

Disclosed hydrophobic lipophilic surface-modified calcium carbonate is characterized by being prepared from the following raw materials in parts by weight: 90-95 parts of calcium carbonate, 2-3 parts of glass fiber, 5-7 parts of polylactic acid, 2-3 parts of polydimethylsiloxane, 3-5 parts of epoxidized triglyceride, 3-5 parts of silica sol, 1-1.5 parts of wood tar, 2-3 parts of titanium tetrachloride, 2-3 parts of expanded perlite, and 2.5-3.5 parts of modified titanium dioxide. By adding polydimethylsiloxane, expanded perlite, wood tar and other hydrophobic waterproof compositions and oily high-molecular polymers, the surface of calcium carbonate is changed into hydrophobicity from hydrophilicity, the effect of calcium carbonate with a polymer interface is enhanced, and a modified unsaturated bond gives play to crosslinking effect during processing with a polymer. The hydrophobic lipophilic surface-modified calcium carbonate can be used to fill plastic, rubber, adhesives and the like.

Description

technical field [0001] The invention relates to the field of industrial fillers, in particular to hydrophobic and lipophilic surface-modified calcium carbonate and a preparation method thereof. Background technique [0002] Calcium carbonate is a commonly used inorganic filler. It is widely used in rubber, plastics, coatings and other fields due to its wide source and low price. However, the surface of heavy calcium carbonate is hydrophilic and oleophobic, the specific surface area is large, the surface energy is high, and the particles are easily agglomerated. When directly or in large quantities filled in organic matrix materials, it is not only difficult to disperse evenly, but also has a weak binding force with the matrix. , leading to two-phase interface defects and some performance degradation of composite materials. Therefore, in order to broaden its application field, it is necessary to modify the surface of heavy calcium carbonate to make its surface lipophilic and...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/04C09C3/06C09C3/08C09C3/10C09C3/12C08L27/06C08K9/04C08K3/26C08K9/06
Inventor 陈永忠
Owner QINGYANG COUNTY YONGCHENG CALCIUM IND
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