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Surface-modified wollastonite as well as preparation method and application thereof

A technology of surface modification and wollastonite, which is applied in coatings, adhesive additives, non-polymer adhesive additives, etc., can solve problems such as uneven dispersion, increased viscosity of the mixed system, and poor dispersion

Pending Publication Date: 2020-11-06
JIANGXI GUANGYUAN CHEM +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the surface of the existing natural wollastonite powder is hydrophilic, so it is not easy to disperse when it is directly added to the polymer aggregate. Poor capacity, wollastonite powder is unevenly dispersed in the organic polymer, which increases the viscosity of the mixed system, makes the flow of the mixed material difficult, and deteriorates the molding performance of the process, resulting in a decrease in the mechanical properties of the composite material

Method used

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  • Surface-modified wollastonite as well as preparation method and application thereof
  • Surface-modified wollastonite as well as preparation method and application thereof
  • Surface-modified wollastonite as well as preparation method and application thereof

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preparation example Construction

[0054] The present invention also provides a method for preparing the surface-modified wollastonite described in the above technical solution, comprising the following steps:

[0055] After first mixing wollastonite, tungsten carbide, polyethylene glycol monostearate, flotation tailings of lead-zinc ore, lubricant and toughening agent, the first mixture is obtained;

[0056] 3-(methacryloyloxy)propyltrimethoxysilane, sodium dodecylsulfonate and part of water are mixed for the second time to obtain the first solution;

[0057] Mixing polyvinylpyrrolidone, olive oil, mugwort extract and ethanol for a third time to obtain a second solution;

[0058] Carry out the 4th mixing with sulfamic acid and remaining water, obtain the 3rd solution;

[0059] The first mixture, the first solution, the second solution, the third solution and the demulsifier are mixed for the fifth time, and then dried to obtain the surface-modified wollastonite.

[0060] In the present invention, the first m...

Embodiment 1

[0070] 20g of wollastonite, 1g of tungsten carbide, 7g of polyethylene glycol monostearate and 6g of lead-zinc ore flotation tailings were mixed and ground for 1 hour, and 4g of lubricants (polyethylene wax, solid paraffin and liquid paraffin were added) The mass ratio is 1:3:4) and the ethylene-1-octene copolymer of 3g, continue grinding 1h, obtain the first mixture;

[0071] Under stirring conditions, 2g of 3-(methacryloyloxy)propyltrimethoxysilane, 1g of sodium dodecylsulfonate and 60g of water were mixed to obtain a first solution;

[0072] Under stirring conditions, mix 0.6g of polyvinylpyrrolidone and 46g of absolute ethanol until the polyvinylpyrrolidone is completely dissolved, then add 1g of olive oil and 4g of mugwort extract in sequence, and continue stirring for 5min to obtain the second solution ;

[0073] Under stirring condition, 10g sulfamic acid and 15g water are mixed, obtain the 3rd solution;

[0074] After the first mixture and the first solution were mix...

Embodiment 2

[0076] 30g wollastonite, 5g tungsten carbide, 8g polyethylene glycol monostearate and 9g lead-zinc ore flotation tailings were mixed and ground for 1 hour, and 8g of lubricants (polyethylene wax, solid paraffin and liquid paraffin were added) The mass ratio is 1:3:4) and the ethylene-1-octene copolymer of 7g, continue grinding 1h, obtain the first mixture;

[0077] Under stirring conditions, 6g of 3-(methacryloyloxy)propyltrimethoxysilane, 5g of sodium dodecylsulfonate and 60g of water were mixed to obtain a first solution;

[0078] Under the condition of stirring, 3g of polyvinylpyrrolidone and 46g of absolute ethanol were mixed until the polyvinylpyrrolidone was completely dissolved, then 3g of olive oil and 10g of mugwort extract were added in sequence, and the stirring was continued for 5 minutes to obtain the second solution;

[0079] Under stirring condition, 19g sulfamic acid and 25g water are mixed, obtain the 3rd solution;

[0080] After the first mixture and the fir...

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Abstract

The invention belongs to the technical field of wollastonite modification and relates to surface-modified wollastonite as well as a preparation method and application thereof. The surface-modified wollastonite comprises the following components in parts by weight: 20 to 30 parts of wollastonite; 1-5 parts of tungsten carbide; 7 to 12 parts of polyethylene glycol monostearate; 6-9 parts of lead-zinc sulfide ore flotation tailings; 3-7 parts of a flexibilizer; 4-8 parts of a lubricant; 5-7 parts of a demulsifier; 1-3 parts of olive oil; 4-10 parts of an artemisia argyi extract; 1-5 parts of sodium dodecyl sulfate; 0.6-3 parts of polyvinylpyrrolidone; 2-6 parts of 3-(methacryloyloxy) propyltrimethoxysilane; 10-19 parts of sulfamic acid; 46-62 parts of absolute ethyl alcohol; and 60-85 parts of water. The tensile strength of a product obtained by compounding the surface-modified wollastonite and ABS resin is greater than or equal to 75MPa, the impact strength of the product is greater thanor equal to 5.3 KJ / m <2>, and the percent of pass of the product is greater than or equal to 98%.

Description

technical field [0001] The invention relates to the technical field of wollastonite modification, in particular to a surface-modified wollastonite and its preparation method and application. Background technique [0002] Wollastonite is usually acicular, radial and fibrous aggregates, white or off-white in appearance, glassy to pearly, with a hardness of 4.5-5.0 and a density of 2.78-2.91g / cm 3 , the refractive index is 1.619-1.634, the melting point is 1455°C, and the pH of 10% 400 mesh wollastonite aqueous solution is about 10. The important thing is that wollastonite also has a series of excellent physical and chemical properties, such as low-temperature fast burning performance: wollastonite can form silicon-aluminum-calcium with anorthite as the main crystal phase at a low temperature of 1020-1080°C. Co-melt, used as a ceramic raw material can reduce the firing temperature and shorten the firing time. It is an ideal low-temperature fast-fired ceramic raw material; elec...

Claims

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Application Information

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IPC IPC(8): C08K9/02C08K9/04C08K9/06C08K7/10C09D7/62C09J11/04C08L55/02
CPCC08K7/10C08K9/02C08K9/04C08K9/06C08K9/08C09J11/04C09D7/62C09D7/70C08L55/02
Inventor 王光硕彭鹤松李海滨陈超袁铭伟宋波
Owner JIANGXI GUANGYUAN CHEM
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