Preparation method of calcium carbonate based reinforcing agent for PVC (polyvinyl chloride) advertising film

A calcium carbonate-based, reinforcing agent technology, applied in chemical instruments and methods, fibrous fillers, dyed low-molecular organic compound treatment, etc., can solve the problems of lack of functionality, increase the filling amount, and improve the tensile strength , elongation at break and product gloss improvement

Active Publication Date: 2012-08-15
ANHUI JIANGDONG TECH POWDER CO LTD
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AI Technical Summary

Problems solved by technology

There are also people who generate nano-calcium carbonate on the surface of heavy calcium carbonate b

Method used

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Embodiment Construction

[0029] The present invention will be further described in detail according to the examples below.

[0030] The present invention, the preparation method of calcium carbonate-based strengthening agent for PVC advertisement film, its steps comprise:

[0031] (1) Calcite raw ore is washed, air-dried and pulverized;

[0032] (2) Use a vibrating sieve to perform preliminary 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 3.6 microns and a d97 of less than 10 microns;

[0033] (3) In terms of weight percentage, 25% to 50% of the powder that has been classified and removed, 5% to 23% of the metal oxide sol ground by the sol mill, 40% to 65% of water, and 0.5% to 4% of the ground The dispersant is mixed, stirred and ground. The surface of the ground calcium carbonate in the powder is coated with inorganic mate...

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Abstract

The invention discloses a preparation method of a calcium carbonate based reinforcing agent for a PVC (polyvinyl chloride) advertising film. The preparation method fundamentally comprises the steps of carrying out clean-washing, air-drying and smashing on calcite raw ore; grading by a vibrating screen; mixing for preparation; coating; drying; and modification. The calcium carbonate based reinforcing agent has the beneficial effects that the tensile strength of the PVC advertising film added with the reinforcing agent prepared by the preparation method is improved by more than 10% compared with that of the PVC advertising film added with common heavy calcium carbonate with the same quantity as the reinforcing agent, both the elongation at break and the product glossiness are improved remarkably, an antibacterial characteristic is added, and the filling content can be improved 5% under the condition of the same product quality.

Description

technical field [0001] The invention relates to a preparation method of a calcium carbonate-based reinforcing agent for PVC advertising films, belonging to the technical field of chemical material production and manufacturing. 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 of the product...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/00C09C3/06C09C3/08C09C3/10C08L27/06C08K9/10C08K9/04C08K9/02C08K3/26
Inventor 胡坤乐毅乐力
Owner ANHUI JIANGDONG TECH POWDER CO LTD
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