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Modified ground calcium carbonate for louver slats and preparation method of modified ground calcium carbonate

A technology of heavy calcium carbonate and blinds, which is applied in the field of calcium carbonate and can solve problems such as product breakage and yield drop

Inactive Publication Date: 2018-05-04
英德市日昇矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Excessive agglomeration will easily break the product and reduce the yield rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A modified ground calcium carbonate for louver leaves, prepared by the following raw materials in parts by weight:

[0016] 100 parts of heavy calcium carbonate, 0.5 parts by weight of sodium cetyl sulfate, 2 parts by weight of sodium stearate, and 0.5 parts by weight of vinyltrimethoxysilane.

[0017] The preparation method is as follows: add sodium cetyl sulfate, sodium stearate, and siloxane coupling agent dropwise with heavy calcium carbonate into a dry mixer, and mix at a high speed for 25 minutes at a temperature of 70-80°C. Instantly.

Embodiment 2

[0019] A modified ground calcium carbonate for louver leaves, prepared by the following raw materials in parts by weight:

[0020] 100 parts of heavy calcium carbonate, 0.8 parts by weight of sodium cetyl sulfate, 1.3 parts by weight of sodium stearate, and 0.9 parts by weight of γ-aminopropyltriethoxysilane.

[0021] The preparation method is as follows: add sodium cetyl sulfate, sodium stearate, and siloxane coupling agent dropwise with heavy calcium carbonate into a dry mixer, and mix at a high speed for 20 minutes at 70-80°C. Instantly.

Embodiment 3

[0023] A modified ground calcium carbonate for louver leaves, prepared by the following raw materials in parts by weight:

[0024] 100 parts of heavy calcium carbonate, 0.7 parts by weight of sodium cetyl sulfate, 1.5 parts by weight of sodium stearate, and 0.8 parts by weight of γ-aminopropyltriethoxysilane.

[0025] The preparation method is as follows: add sodium cetyl sulfate, sodium stearate, and siloxane coupling agent dropwise into a dry mixer along with heavy calcium carbonate, and mix at a high speed for 30 minutes at a temperature of 70-80°C. Instantly.

[0026] In the present invention, through the combination of 16-18 alkyl salt and 18 carbene compound, the siloxane coupling agent has better binding strength with heavy calcium carbonate than fatty acid salt, and can preferentially form on the surface of heavy calcium carbonate Better encapsulation, forming a core-shell mechanism, sodium stearate and sodium cetyl sulfate form a long-chain structure on the surface o...

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Abstract

The invention relates to the field of calcium carbonate and discloses modified ground calcium carbonate for louver slats. Modified ground calcium carbonate is prepared from raw materials in parts by weight as follows: 100 parts of ground calcium carbonate, 0.5-1 part of sodium cetyl sulfate, 1-2 parts of sodium stearate and 0.5-1 part of a siloxane coupling agent. The invention aims to provide low-agglomerated modified ground calcium carbonate for the louver slats.

Description

technical field [0001] The invention relates to the field of calcium carbonate, in particular to a modified heavy calcium carbonate for louvers. Background technique [0002] Ground calcium carbonate is ground from natural carbonate minerals such as calcite, marble, and limestone. It is a commonly used powdered inorganic filler, with high chemical purity, high inertness, not easy to chemical reaction, good thermal stability, no decomposition below 400 °C, high whiteness, low oil absorption, low refractive index, soft, dry, It does not contain crystal water, has low hardness, small wear value, non-toxic, tasteless, odorless, and good dispersibility. The shape of heavy calcium carbonate is irregular, the particle size varies greatly, and the particles have certain edges and corners, the surface is rough, the particle size distribution is wide, the particle size is large, and the average particle size is generally 1~10μm. This also brings some disadvantages of heavy calcium c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/08C09C3/12
Inventor 邓瑞旦
Owner 英德市日昇矿业有限公司
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