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

A calcium carbonate powder, calcium carbonate technology, 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 , the effect of improving the uniformity of tensile strength and air permeability

Active Publication Date: 2012-09-19
ANHUI JIANGDONG TECH POWDER CO LTD
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  • Abstract
  • Description
  • Claims
  • 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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Embodiment Construction

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

[0028] The present invention, the preparation method of low-yellowness antibacterial calcium carbonate functional compound powder for air-permeable film, its steps comprise:

[0029] (1) Washing, air-drying and pulverizing the raw calcite ore;

[0030] (2) Use a vibrating sieve to perform primary classification and removal of impurities on the pulverized powder, and reclassify powders with different particle size distributions by adjusting the cyclone classification parameters to an average particle size of less than 2 microns and a d97 of less than 5 microns;

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

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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-yellowness antibacterial calcium carbonate functional composite powder for a breathable film, and belongs to the technical field of chemical material production. Background technique [0002] Calcium carbonate is a non-metallic inorganic filler with the largest amount and widest application. 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, good quality, broad market and good development space of calcium carbonate in China, the output and demand of calcium carbonate in China have increased rapidly in the past two decades, but most of them are used as ordinary fillers. Use, the pertinence of the product is not strong, generally belongs to the low-grade product, the performance improvement of the product is limited, so there are problems such as low added value o...

Claims

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Application Information

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Patent Type & Authority Applications(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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