Polymethyl methacrylate-nano cerium oxide coating modification calcium carbonate powder and preparing method thereof

A technology of polymethyl methacrylate and nano-cerium oxide, which is applied in chemical instruments and methods, dyeing low-molecular organic compound treatment, dyeing high-molecular organic compound treatment, etc., can solve problems such as insufficient additional functions, and achieve added value improvement , Improve surface reactivity, improve toughness and heat aging resistance

Inactive Publication Date: 2017-04-26
QINGYANG COUNTY YONGCHENG CALCIUM IND
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

"Research on Ground Calcium Carbonate Powder Modified by Stearic Acid-Titanate Coupling Agent" uses stearic acid and titanate coupling agent as composite modifier, absolute ethanol as dispersant, and adopts wet ball milling The powder is modified to achieve a relatively ideal modification effect, but the product prepared by this method is a hydrophobic product, which is limited in the application of water-based ink and water-based paint, and the additional functions are insufficient, which is limited to reinforcement For toughening, further modification is required to broaden its scope of use

Method used

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Embodiment Construction

[0011] A polymethyl methacrylate nano cerium oxide coated modified calcium carbonate powder, the modified calcium carbonate powder is made of the following raw materials in parts by weight: calcium carbonate 50, titanate coupling agent 2, nano Cerium oxide 0.1, methyl methacrylate 4, azobisisobutyronitrile 0.5, absolute ethanol 70, sodium dodecylsulfonate 0.1, N,N-dimethylformamide 20, deionized water 40.

[0012] The preparation method of this embodiment powder comprises the following steps:

[0013] (1) Put the titanate coupling agent and calcium carbonate together into absolute ethanol, ball mill for 40 minutes, then dry with hot air to completely remove the solvent, and obtain pre-modified calcium carbonate powder after grinding and dispersing;

[0014] (2) Mix and stir sodium dodecylsulfonate, N,N-dimethylformamide, and deionized water evenly, then add the pre-modified calcium carbonate powder and nano-cerium oxide prepared in step (1), and ultrasonically Disperse for 1....

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Abstract

The invention discloses polymethyl methacrylate-nano cerium oxide coating modification calcium carbonate powder. The preparing method includes the steps that titanate coupling agent / ethanol solution wet method ball grinding pretreatment is carried out on calcium carbonate to improve dispersity and surface reactivity, calcium carbonate powder obtained after pre-modification is mixed with nano cerium oxide and methyl methacrylate monomers to react, a polymethyl methacrylate / nano cerium oxide composite membrane layer is generated on the surface through in-situ polymerization, modified calcium carbonate powder has good compatibility with a resin matrix, unique characteristics are endowed to the powder by rare earth oxide, tenacity, thermal ageing resistance, light ageing resistance and electromagnetic radiation resistance of plastic can be improved, and added value is effectively increased.

Description

technical field [0001] The invention relates to the technical field of inorganic powder surface modification, in particular to polymethyl methacrylate-nanometer cerium oxide coated calcium carbonate powder and a preparation method thereof. Background technique [0002] Calcium carbonate is a very common inorganic powder filler. It has the advantages of low price, non-toxic and tasteless, high whiteness and good hardness. It is widely used in rubber products, papermaking, ink, plastics, coatings and other fields. However, , calcium carbonate is essentially an inorganic mineral, which has poor affinity and compatibility with organic substances. Direct filling will lead to serious deterioration of product performance and severely limited scope of use. Therefore, calcium carbonate powder needs to be adjusted in practical applications. Carry out modification. [0003] At present, the main modification methods include mechanical refinement, surface modifiers such as coupling agen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/06C09C3/08C09C3/10
CPCC09C1/021C01P2004/62C01P2006/19C01P2006/22C01P2006/90C09C3/006C09C3/063C09C3/08C09C3/10
Inventor 陈永忠
Owner QINGYANG COUNTY YONGCHENG CALCIUM IND
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