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High-dispersity modified calcium carbonate and preparation method thereof

A calcium carbonate, dispersity technology, applied in chemical instruments and methods, dyed low molecular organic compound treatment, dyed high molecular organic compound treatment and other directions, can solve problems such as bubbles, defects, deformation, etc., achieve simple production process and reasonable formula Effect

Inactive Publication Date: 2014-09-10
重庆市琪馨建筑材料有限公司
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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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  • High-dispersity 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 modified calcium carbonate with high dispersion is prepared from the following raw materials in parts by weight (kg): calcium carbonate 85, diffusing agent NNO1, itaconic acid 4, diacetone acrylamide 5, dibutyltin maleate 1, Polybutylene succinate 4, polyaluminum chloride 2, mica powder 2, easily dispersible fiber 2, straw ash 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 suspension. Dry down to a water content of 2...

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Abstract

The invention discloses high-dispersity modified calcium carbonate which is characterized by being prepared from the following raw materials in parts by weight: 85-90 parts of calcium carbonate, 1-2 parts of a dispersing agent NNO, 4-6 parts of itaconic acid, 5-6 parts of diacetone acrylamide, 1-2 parts of dibutyltin maleate, 4-6 parts of poly(butylene succinate), 2-3 parts of poly(aluminum chloride), 2-4 parts of mica powder, 2-4 parts of easily dispersed fibers, 2-3 parts of straw ash and 3-4 parts of modified titanium dioxide. According to high-dispersity modified calcium carbonate, a formula is reasonable, a production process is simple, the easily dispersed fibers with excellent dispersion performance and modified titanium dioxide are added, the surface of calcium carbonate is modified with macromolecular polymers, unsaturated double bonds in modified calcium carbonate can be subjected to cross-linking reaction together with film-forming substances in rubber, plastics and coatings to generate very strong bonding force, the product performance still cannot be reduced even if a large quantity of modified calcium carbonate is added, and modified calcium carbonate is used for products of plastic additives, pigments, coating aids and the like.

Description

technical field [0001] The invention relates to the field of industrial fillers, in particular to a modified calcium carbonate with high dispersion and a preparation method thereof. Background technique [0002] 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 application of nano-calcium carbonate. 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 proper...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/10C09C3/08C09C3/06
Inventor 王俊华朱传路
Owner 重庆市琪馨建筑材料有限公司
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