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Modified calcium carbonate with high specific surface area and preparation method thereof

A high specific surface area, calcium carbonate technology, applied in chemical instruments and methods, dyed low-molecular organic compound treatment, dyed high-molecular organic compound treatment, etc., can solve the problems of composite material mechanical properties decline, interface defects, uniform dispersion, etc. Achieve the effect of stable product quality, low production cost and good mechanical properties

Active Publication Date: 2014-09-24
CHIZHOU CELT NANO TECH
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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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  • Modified calcium carbonate with high specific surface area 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 modified calcium carbonate with a high specific surface area is prepared from the following raw materials in parts by weight (kg): calcium carbonate 90, methyl methacrylate 4, melamine resin 5, propylene glycol sebacate polyester 3, coconut shell Activated carbon 2, fly ash 2, ammonium bicarbonate 1, turpentine 2, polysorbate 801, modified titanium dioxide 2.5;

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

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Abstract

The invention discloses a modified calcium carbonate with a high specific surface area. The modified calcium carbonate is characterized by being prepared from the following raw materials in parts by weight: 90 to 95 parts of calcium carbonate, 4 to 6 parts of methyl methacrylate, 5 to 7 parts of melamine resin, 3 to 4 parts of propanediol sebacate polyester, 2 to 3 parts of cocoanut active charcoal, 2 to 3 parts of coal ash, 1 to 1.5 parts of ammonium bicarbonate, 2 to 3 parts of turpentine, 1 to 2 parts of polysorbate 80 and 2.5 to 3.5 parts of modified titanium dioxide. Based on the improvement of a production process, the calcium carbonate has the good mechanical property; the modified titanium dioxide is added after the calcium carbonate is ground, so that the dispersion effect of the calcium carbonate is increased. The granularity of the modified calcium carbonate is refined, so that the modified calcium carbonate has the high specific surface area so as to increase an absorption effect. The modified calcium carbonate is stable in quality and low in production cost, thereby being suitable for serving as various industrial filling materials.

Description

technical field [0001] The invention relates to the field of industrial fillers, in particular to a modified calcium carbonate with a high specific surface area 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 mee...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/08C09C3/10C09C3/06C09C1/36
Inventor 顾庆雷徐宇坤顾宗军高健健倪伯祥张长来曹继勇徐建林陶沈杰张小桐
Owner CHIZHOU CELT NANO TECH
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