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Hydrophobic quartz micro powder as well as integrated production process and application thereof

A technology of quartz micropowder and production process, which is applied in the directions of dyeing organosilicon compound treatment, fibrous filler, dyeing physical treatment, etc. Advanced production process control method, convenient hydrophobicity and dispersibility, rich raw material source effect

Active Publication Date: 2013-10-09
ZIYUAN COUNTY TIANSHENG NEW MATERIAL DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Surface treatment with ordinary hydrocarbon silane is currently the most commonly used hydrophobic modification method, but the hydrophobicity of the quartz micropowder after such treatment is not greatly improved, and the hydrophobicity of the outdoor epoxy castings prepared by using it as a filler Often unsatisfactory

Method used

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  • Hydrophobic quartz micro powder as well as integrated production process and application thereof
  • Hydrophobic quartz micro powder as well as integrated production process and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]After the natural quartz ore raw material is roughly crushed by the crusher, the coarse quartz powder with a particle size of 2 to 10 mm is screened out, and it is lifted to the feeding bin by the elevator, and the stirring device of the feeding bin is started, and the organic silicon containing 3 fluorine atoms is mixed. The coupling agent is sprayed on the surface of the quartz powder particles at a speed of 2mL / min by the spray device, and then the coarse quartz powder with the fluorine-containing silicone coupling agent attached to the surface is sent into the ball mill through the frequency conversion feeder, and the quartz powder is in the ball mill. Gradually crushed, and the high temperature generated during the impact process will vaporize the fluorine-containing silicone coupling agent and graft it on the surface of the crushed quartz powder. During the ball milling process, the temperature in the ball mill is controlled at about 80°C by controlling the appropri...

Embodiment 2

[0046] After the natural quartz ore raw material is roughly crushed by the crusher, the coarse quartz powder with a particle size of 2 to 10 mm is screened out, and it is lifted to the feeding bin by the elevator, and the stirring device of the feeding bin is started, and the organic silicon containing 7 fluorine atoms is mixed. The coupling agent is sprayed on the surface of the quartz powder particles at a speed of 4mL / min through the spray device, and then the coarse quartz powder with the fluorine-containing silicone coupling agent attached to the surface is sent into the ball mill through the frequency conversion feeder, and the quartz powder is in the ball mill. Gradually crushed, and the high temperature generated during the impact process will vaporize the fluorine-containing silicone coupling agent and graft it on the surface of the crushed quartz powder. During the ball milling process, the appropriate flow rate of cooling circulating water is controlled by the automa...

Embodiment 3

[0048] After the natural quartz ore raw material is roughly crushed by the crusher, the coarse quartz powder with a particle size of 2-10mm is screened out, and it is lifted to the feeding bin by the elevator, and the stirring device of the feeding bin is started, and the organic silicon containing 17 fluorine atoms is mixed. The coupling agent is sprayed on the surface of the quartz powder particles by the spray device at a speed of 8mL / min, and then the coarse quartz powder with the fluorine-containing silicone coupling agent attached to the surface is sent into the ball mill through the frequency conversion feeder, and the quartz powder is in the ball mill. Gradually crushed, and the high temperature generated during the impact process will vaporize the fluorine-containing silicone coupling agent and graft it on the surface of the crushed quartz powder. During the ball milling process, the appropriate flow rate of cooling circulating water is controlled by the automatic cont...

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Abstract

The invention discloses a hydrophobic quartz micro powder as well as an integrated production process and application thereof. The average particle size of the hydrophobic quartz micro powder is 1-75 microns, and the hydrophobic quartz micro powder contains 0.2-3% of a fluoric organic silicon coupling agent in percentage by mass; a fluoric silane coupling agent is used for performing surface graft modification on the quartz micro powder, so that the hydrophobicity and dispersity of the quartz micro powder can be effectively improved, and the added value of the conventional quartz micro powder is greatly improved; and the hydrophobic quartz micro powder can be used as a filler for epoxy resin to prepare outdoor epoxy resin products with strong hydrophobicity. Besides, integration is realized through multi-step processes including mineral separation, coarse crushing, fine grinding, hydrophobic modification, classification, collection and the like, so that the operation is simple, and the labor cost is reduced; and moreover, the spraying speed of the silane coupling agent is controlled, so that the grafting degree of the silane coupling agent on the surface of the quartz micro powder can be simply, conveniently and effectively adjusted, and then the hydrophobicity and dispersity of the quartz micro powder can be conveniently adjusted and controlled.

Description

technical field [0001] The invention relates to the technical field of deep processing of natural non-metallic minerals, in particular to a hydrophobic quartz micropowder and its integrated production process and application. Background technique [0002] Quartz powder is a neutral inorganic filler with very stable physical and chemical properties. Its chemical composition is silicon dioxide (SiO 2 ), has excellent chemical stability, and does not react chemically with most acids and alkalis. It does not contain crystal water, has strong compactness, high hardness, good wear resistance, excellent dielectric properties, low thermal expansion coefficient, high thermal conductivity, and has good wettability to various resins, especially as an epoxy composite material. Filler, which can greatly improve the tensile, compressive, impact strength and wear resistance of the cured product. Increase the thermal conductivity of the composite material, reduce the exothermic peak temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/28C09C3/12C09C3/04C08K9/06C08K3/36C08L63/00
Inventor 莫海林杨科
Owner ZIYUAN COUNTY TIANSHENG NEW MATERIAL DEV
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