A kind of surface modification method of zns powder

A surface modification and modification technology, applied in chemical instruments and methods, dyeing organosilicon compound treatment, inorganic pigment treatment, etc. Conducive to long-term storage, prevention of precipitation and agglomeration, and low equipment requirements

Active Publication Date: 2016-01-13
潍坊大耀新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the surface of ZnS powder itself has no chemical activity, it has poor compatibility with other organic and inorganic materials and poor stability, which affects its full performance in use and is not conducive to long-term application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, a kind of surface modification method of ZnS powder is characterized in that described process comprises the following steps:

[0027] (1) Add 23kg of oxidized polyethylene powder, 11kg of deionized water, 9kg of emulsifier fatty alcohol polyoxyethylene ether, 2kg of titanium dioxide and triethanolamine (1:2 by weight) into the reactor, and stir at room temperature for 38 minutes.

[0028] (2) Heat the reactor to 89°C, pressurize to 0.8MPa, then seal it, stir at a speed of 65r / min for 68min, stop heating and stirring, and keep the pressurized state.

[0029] (3) Cool down the reaction kettle to 42°C naturally, adjust the internal pressure of the reaction kettle to 0.3MPa, and then stir at a speed of 18r / min to room temperature.

[0030] (4) Adjust the pressure of the reactor to standard atmospheric pressure, add the emulsion obtained in (3) to a filter and filter, and remove the insoluble matter therein.

[0031] (5) Add ammonia solution to the emulsion o...

Embodiment 2

[0036] Embodiment 2, a surface modification method of ZnS powder, is characterized in that described process comprises the following steps:

[0037] (1) Add 70kg of oxidized polyethylene powder, 35kg of deionized water, 28kg of emulsifier polyoxyethylene oleate and n-butanol, 7kg of zinc oxide and polyethylene glycol (weight ratio 1:2) into the reactor, Stir at room temperature for 58 minutes.

[0038] (2) Heat the reactor to 112°C, pressurize to 1.3MPa, then seal it, stir at a speed of 85r / min for 83min, stop heating and stirring, and keep the pressurized state.

[0039] (3) Cool down the reaction kettle to 45°C naturally, adjust the internal pressure of the reaction kettle to 0.4MPa, and then stir at a speed of 18r / min to room temperature.

[0040] (4) Adjust the pressure of the reactor to standard atmospheric pressure, add the emulsion obtained in (3) to a filter and filter, and remove the insoluble matter therein.

[0041] (5) Add ammonia solution to the emulsion obtaine...

Embodiment 3

[0046] Embodiment 3, a kind of surface modification method of ZnS powder is characterized in that described process comprises the following steps:

[0047] (1) Add 80kg of oxidized polyethylene powder, 40kg of deionized water, 32kg of emulsifier alkylbenzene sulfonate and polyacrylamide (1:2 by weight), ammonia water, zinc oxide and polyethylene glycol into the reaction kettle Alcohol 8kg (weight ratio 1:1:1), stirring at room temperature for 30-60min.

[0048] (2) Heat the reactor to 95°C, pressurize to 0.7MPa, then seal it, stir at a speed of 76r / min for 50-90min, stop heating and stirring, and keep the pressurized state.

[0049] (3) Cool down the reaction kettle to 43°C naturally, adjust the internal pressure of the reaction kettle to 0.2MPa, and then stir at a speed of 23r / min to room temperature.

[0050] (4) Adjust the pressure of the reactor to standard atmospheric pressure, add the emulsion obtained in (3) to a filter and filter, and remove the insoluble matter there...

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PUM

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Abstract

The invention discloses a surface modification method of ZnS powder. The surface modification method comprises the following steps: stirring oxidized polyethylene powder, deionized water, an emulsifier and other reagents at the normal temperature, heating the mixture and sealing, pressurizing and stirring, keeping pressurization, naturally cooling, adjusting the air pressure to be 0.1-0.5 MPa, stirring the solution until the temperature of the solution is the room temperature, adjusting the pressure to be standard atmospheric pressure, filtering the emulsion, adding ammonia water in the obtained emulsion, adjusting the pH value to be 8.0-9.0, adding the organic modified emulsion in the ZnS powder, stirring the solution, and standing; drying the modified ZnS powder, and naturally cooling the ZnS powder to obtain the surface modified ZnS powder. The modified ZnS powder can be dispersed in a base material well, is high in compatibility, has good antimicrobial, mildew-proof and algae-removing effects in the internal and external wall coating, can be used as a white pigment in the coating and plastics to enhance whiteness, and is high in cohesiveness to bind other inorganic materials; the process is simple, the operation is easy, the preparation process is free of pollution, and the energy-saving and environment-friendly requirements can be met.

Description

technical field [0001] The invention relates to a method for surface modification of ZnS powder, in particular to a method for surface modification of ZnS powder that can be used in the fields of coatings, plastics, pigments, rubber, long glass fibers, inorganic materials, etc., and belongs to chemical technology field. Background technique [0002] Due to its excellent optical, electrical and other physical properties, ZnS has a very wide range of applications in optoelectronic devices, coatings, pigments, rubber, plastics, luminescent materials, aerospace and other fields. [0003] Zinc sulfide is a commonly used white pigment, and its application in plastics, coatings, and paints is second only to titanium dioxide. Due to its low Mohs hardness, zinc sulfide is very suitable as a white pigment for glass fiber reinforced plastics, which can significantly maintain the mechanical properties of glass fibers. Because zinc sulfide is white, opaque, insoluble in water and organ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/04C09C3/12C09C3/10C09C3/08C09C3/06
Inventor 王强
Owner 潍坊大耀新材料有限公司
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