Preparation method and application of bamboo fiber micropowder

A technology of ultra-fine powder and bamboo fiber, applied in the chemical industry, can solve the problems of easy destruction of the micropores of the powder, no UV resistance, poor fineness of the ultra-fine powder, etc., to achieve easy crushing and grinding, and reaction efficiency The effect of high and dark colors

Active Publication Date: 2016-06-08
宜兴市华夏化工材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the poor fineness of the existing ultrafine powder, the micropores of the powder are easily destroyed, and do not have the defect of anti-ultraviolet rays, and provide a kind of microporous bamboo fiber ultrafine powder The preparation method, the superfine powder prepared by this method has the properties of reactivity, waterproof and moisture permeability, aging resistance, antibacterial, anti-ultraviolet and other properties, and can be used as an industrial functional additive

Method used

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  • Preparation method and application of bamboo fiber micropowder
  • Preparation method and application of bamboo fiber micropowder

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preparation example Construction

[0033] In order to solve the above problems, the invention provides a kind of preparation method of bamboo fiber superfine powder, specifically comprises the following steps:

[0034] 1) Raw material crushing: the raw material is directly crushed into a 400-500 mesh fine powder with a pulverizer, and the raw material includes bamboo powder containing microporous bamboo fiber; the crushing is carried out by a roller crusher and a ball mill for crushing and grinding.

[0035] 2) Vacuum condensation treatment: Put the fine powder into a closed container, vacuumize it through a vacuum pump, heat it to vaporize the powder, and then perform quenching to obtain a purified fine powder; the main purpose of this step is to remove the fruit in the fine powder It removes impurities such as glue and lignin, and embrittles the fine powder, which is more conducive to the subsequent grinding of fine powder into ultra-fine powder, and does not damage the original antibacterial and anti-ultravio...

Embodiment approach

[0046] As a preferred embodiment of the present invention, the raw materials also include one or more mixtures of bamboo, hemp stalks, jute stalks, flax stalks, sisal stalks, ramie stalks and hemp stalks use.

[0047] As a preferred embodiment of the present invention, step 3) also includes a bleaching process, step 3) specifically: adding sodium hydroxide with a concentration of 8-15g / L to the purified fine powder at 80-100°C Stir the solution for 2-4 hours, then adjust the pH value to 7 with dilute hydrochloric acid, vacuum filter, centrifugal dehydration, add sodium hypochlorite solution to the precipitate, stir for 1-4 hours, after bleaching, vacuum filter, wash with water, and adjust with phosphoric acid The pH value was 7, centrifuged and dehydrated to obtain a bleached precipitate. The number of bleaching times depends on the bleaching effect and bleaching requirements.

[0048] Implementation method:

Embodiment approach 1

[0049] Embodiment 1, a kind of preparation method of bamboo fiber superfine powder specifically comprises the following steps:

[0050] 1) Raw material crushing: the raw material is directly crushed into a fine powder of 400-500 mesh with a pulverizer, and the raw material includes bamboo powder containing microporous bamboo fiber;

[0051] 2) Vacuum condensation treatment: put the fine powder into a closed container, vacuumize through a vacuum pump, heat to vaporize the powder, and then perform quenching to obtain purified fine powder;

[0052] 3) Alkalinization treatment: at 80-100°C, add sodium hydroxide solution with a concentration of 8-15g / L to the purified fine powder and stir for 2-4 hours, then adjust the pH value to 7 with dilute hydrochloric acid, vacuum pump Filter, centrifuge and dehydrate to obtain a precipitate;

[0053] 4) Freeze-drying treatment: freeze-dry the precipitate to obtain activated fine powder;

[0054] 5) Modification treatment: at 60-140°C, mix ...

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Abstract

The invention discloses a preparation method and application of bamboo fiber micropowder. The method comprises the following steps: by using microporous bamboo fiber powder as a raw material, carrying out physical pulverization, and carrying out chemical treatment for modification, thereby obtaining the bamboo fiber micropowder with the fineness of 600 meshes or above. The bamboo fiber micropowder can be used as an industrial additive in paints and various coatings, can enhance the water resistance, moisture penetrability, aging resistance, ultraviolet resistance and mold resistance of the product, and can be added into a paint or varnish to deepen the color of the paint. The bamboo fiber micropowder can also be used in a sol addition material.

Description

technical field [0001] The invention relates to the field of chemical industry, more specifically, the invention relates to a preparation method of bamboo fiber superfine powder that can be used as a functional additive, and the application of the product prepared by the method as an industrial additive. Background technique [0002] Wearing textiles are moisture-permeable, but not waterproof; most coated fabrics are waterproof, but not moisture-permeable. Moisture permeability here means that human sweat or moisture can be emitted outward, and waterproof means that external water mist cannot penetrate inward. When people are outdoors, they often encounter rainy and snowy weather and need waterproof clothes to protect their bodies. However, the human body uses the skin to evaporate water to dissipate heat and regulate body temperature. If the evaporated water is not released in time, it will accumulate in the skin and clothing In the meantime, the humidity in this part of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/65C08G18/64C09D175/04C09D5/14C09D167/00D06L3/06
CPCC08G18/6492C08G18/6511C08L2205/025C09D5/14C09D167/00C09D175/04C08L75/04
Inventor 史星照史建科沈杰
Owner 宜兴市华夏化工材料有限公司
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