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Preparation method of low-yellowness antibacterial calcium carbonate functional composite powder for ventilated membrane

A technology of calcium carbonate powder and calcium carbonate, which is applied in chemical instruments and methods, dyeing low-molecular organic compound treatment, fibrous fillers, etc., can solve problems such as lack of functionality, reduce yellowness, and avoid secondary agglomeration , Tensile strength and air permeability uniformity improvement effect

Active Publication Date: 2014-06-18
ANHUI JIANGDONG TECH POWDER CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

There are also people who generate nano-calcium carbonate on the surface of heavy calcium carbonate by carbonization, and then modify it with a coupling agent, but none of them have a functional purpose.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention will be described in further detail below according to the examples.

[0028] The present invention provides a method for preparing a low-yellow antibacterial calcium carbonate functional composite powder for a breathable film, the steps of which include:

[0029] (1) Wash, air-dry and pulverize the calcite ore;

[0030] (2) Use a vibrating screen to perform primary classification and impurity removal on the pulverized powder, and re-classify the powder with different particle size distributions by adjusting the cyclone classification parameters until the average particle size is less than 2 microns and d97 is less than 5 microns;

[0031] (3) In terms of weight percentage, 30%~65% of graded and impurity-removed powder, 3%~20% of metal oxide sol ground by sol grinding, 40%~70% water, 0.5%~4% grinding The dispersant is mixed and stirred for grinding. In the powder, the surface of the heavy calcium carbonate is coated with inorganic materials, and t...

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Abstract

The invention discloses a preparation method of low-yellowness antibacterial calcium carbonate functional composite powder for a ventilated membrane. The method comprises the following steps of: cleaning calcite raw ore, drying in the air and smashing; grading with a vibration sieve; mixing for preparing; coating; drying; and modifying. The composite powder has the beneficial effects: when added into the ventilated membrane, the composite powder plays a role in filling and increasing volume; the yellowness of the ventilated membrane is lowered by over 50 percent in comparison to a ventilated membrane into which an equal amount of ordinary calcium carbonate is added; the processing flowability, tensile strength and air permeability uniformity of a ventilated membrane product can be improved remarkably; and the ventilated membrane added with the calcium carbonate-based functional composite powder has antibacterial property.

Description

technical field [0001] The invention relates to a preparation method of a low-yellow antibacterial calcium carbonate functional composite powder for a breathable film, and belongs to the technical field of chemical material production and manufacture. Background technique [0002] Calcium carbonate is a non-metallic inorganic filler with the largest amount and the most widely used. Due to its wide range of raw materials, low price, non-toxicity and high whiteness, it is widely used in plastics, rubber, papermaking, coatings and other fields. Due to the large reserves of raw materials, good quality, broad market and good development space of calcium carbonate in China, in the past two decades, the production and demand of calcium carbonate in China have increased rapidly, but most of them are used as ordinary fillers Use, the product is not very targeted, generally belongs to low-end products, the performance improvement of the product is limited, so there are problems such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/02C09C3/06C09C3/08C09C3/04C08K9/10C08K3/26C08L23/00C08L9/02
Inventor 胡坤乐毅乐力
Owner ANHUI JIANGDONG TECH POWDER CO LTD
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