Preparation method of polydimethyl siloxane ground limestone superfine powder

A technology of polydimethylsiloxane and heavy calcium carbonate, applied in chemical instruments and methods, dyeing organosilicon compound treatment, inorganic pigment treatment, etc., can solve problems such as not found, and achieve convenient operation, low production cost, easy to control effects

Inactive Publication Date: 2015-04-01
甘振辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Through the search of Chinese published patents, 53 calcium carbonate invention p

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0008] Example 1

[0009] The preparation method of polydimethylsiloxane heavy calcium carbonate ultrafine powder of the present invention is characterized in that: heavy calcium carbonate coarse powder is added to a grinding device, and heavy calcium carbonate coarse powder is used at 85-95°C. In terms of weight percentage, 10-12% of the auxiliary agent is added, and the modified ultrafine calcium carbonate powder with a particle diameter of 0.1-10 microns is prepared by high-speed grinding; the auxiliary agent, by weight, is polydimethylsiloxane 3-5 parts, 2-3 parts ethoxylauramide, 2-3 parts aluminate coupling agent, 5-8 parts sodium carbonate, 5-8 parts ethylene glycol.

Example Embodiment

[0010] Example 2

[0011] The preparation method of polydimethylsiloxane heavy calcium carbonate ultrafine powder of the present invention is characterized in that: heavy calcium carbonate coarse powder is added to a grinding device, and heavy calcium carbonate coarse powder is used at 85-95°C. In terms of weight percentage, 10-12% of the auxiliary agent is added, and the modified ultrafine calcium carbonate powder with a particle diameter of 0.1-10 microns is prepared by high-speed grinding; the auxiliary agent, by weight, is polydimethylsiloxane It consists of 3 parts, 3 parts ethoxylauramide, 2 parts aluminate coupling agent, 5-8 parts sodium carbonate, and 5-8 parts ethylene glycol.

Example Embodiment

[0012] Example 3

[0013] The preparation method of polydimethylsiloxane heavy calcium carbonate ultrafine powder of the present invention is characterized in that: heavy calcium carbonate coarse powder is added to a grinding device, and heavy calcium carbonate coarse powder is used at 85-95°C. In terms of weight percentage, 10-12% of the auxiliary agent is added, and the modified ultrafine calcium carbonate powder with a particle diameter of 0.1-10 microns is prepared by high-speed grinding; the auxiliary agent, by weight, is polydimethylsiloxane 5 parts, 2 parts ethoxylauramide, 3 parts aluminate coupling agent, 5-8 parts sodium carbonate, 5-8 parts ethylene glycol.

[0014] The product has been used by customers and the response is very good.

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Abstract

The invention discloses a preparation method of polydimethyl siloxane ground limestone superfine powder. The preparation method is characterized by comprising the following steps: adding coarse ground limestone powder into grinding equipment; based on weight percentage of the coarse ground limestone powder, adding 10-12 percent of an adjuvant at the temperature of 85 to 95 DEG C; grinding at a high speed to prepare modified calcium carbonate superfine powder of which the particle size is 0.1 to 10 micrometers, wherein the adjuvant consists of the following components in parts by weight: 3-5 parts of polydimethyl siloxane, 2-3 parts of ethyoxyl aminoethyl laurate, 2-3 parts of an aluminic acid ester coupling agent, 5-8 parts of sodium carbonate and 5-8 parts of glycol. The preparation method disclosed by the invention has the advantages of being scientific and reasonable in design, simple in process, safe, reliable, easy to control, convenient to operate, suitable for large-scale production, low in production cost and the like.

Description

technical field [0001] The invention belongs to a production method of calcium carbonate powder. Background technique [0002] At present, calcium carbonate has been widely used in papermaking, plastics, plastic films, chemical fibers, rubber, adhesives, sealants, daily chemicals, cosmetics, building materials, coatings, paints, inks, putty, sealing wax, putty, felt packaging, medicine , food (such as chewing gum, chocolate), and feed, its functions include: increasing product volume, reducing cost, improving processing performance (such as adjusting viscosity, rheological properties, vulcanization properties), improving dimensional stability, reinforcing or semi-reinforcing , Improve printing performance, improve physical properties (such as heat resistance, extinction, abrasion resistance, flame retardancy, whiteness, gloss) and so on. There are two production processes of heavy calcium carbonate. Dry production process: First, hand-select calcite, limestone, chalk, shel...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/04C09C3/12C09C3/08C09C3/06
Inventor 廖煜明廖文成李杰
Owner 甘振辉
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