A kind of hyperbranched copolymer ceramic reinforcing agent and its preparation method and application

A technology of hyperbranched copolymer and hyperbranched polymer, which is applied in the field of ceramic reinforcing agents, can solve the problems of large addition, wide molecular weight distribution of reinforcing agents, unstable performance, etc., and achieve increased green body strength, increased yield, and high performance. stable effect

Active Publication Date: 2020-02-14
广东智洁卫浴有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the enhancer of the invention uses cornstarch as the main reinforcing component, it has the disadvantage of a large amount of addition; at the same time, traditional free radical polymerization is used in the synthesis, and the molecular weight distribution of the enhancer is wide and its performance is unstable.

Method used

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  • A kind of hyperbranched copolymer ceramic reinforcing agent and its preparation method and application

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Effect test

Embodiment 1

[0022] A kind of hyperbranched copolymer ceramic reinforcing agent of the present invention, its RAFT preparation method is as follows:

[0023] (1) Synthesis of hyperbranched RAFT reagent: 5.6 parts of 2-(methyltrithiocarbonate)-2-methylpropionyl chloride are dissolved in 30 parts of acetone, which is referred to as solution I; 25 parts of hyperbranched poly Put ethyleneimine into the reactor, heat to 40°C under stirring, then add solution I dropwise, after 1h dropwise addition, continue to react at 40°C for 6h, add ammonia solution to precipitate, wash with acetone, and vacuum dry to obtain overspend Chemical RAFT reagents.

[0024] (2) RAFT polymerization: 26 parts of acryloyloxyethoxy sodium phosphate, 5 parts of acryloyloxyethyltrimethylammonium chloride, 3 parts of (1) hyperbranched RAFT reagent, 80 parts of water, 0.5 parts Add sodium phosphate and 0.5 parts of white cubes into the reactor, fully dissolve and mix evenly, then heat to 55°C, add 10 parts of 7.5% hydrogen...

Embodiment 2

[0027] A kind of hyperbranched copolymer ceramic reinforcing agent of the present invention, its RAFT preparation method is as follows:

[0028] (1) Synthesis of hyperbranched RAFT reagent: 6.2 parts of 2-(propyltrithiocarbonate)-2-methylpropionyl chloride are dissolved in 25 parts of butanone, which is referred to as solution I; 14 parts of hyperbranched Put polyethyleneimine into the reactor, heat to 55°C under stirring, then add solution I dropwise, after 0.5h dropwise addition, continue to react at 55°C for 5h, add ammonia solution to precipitate, wash with methyl ethyl ketone, and vacuum dry Afterwards, the hyperbranched RAFT reagent is obtained.

[0029] (2) RAFT polymerization: 24 parts of acryloyloxypropoxy sodium phosphate, 5.3 parts of acryloyloxyethyltrimethylammonium bromide, 2 parts of (1) hyperbranched RAFT reagent, 65 parts of water, 1.5 parts of Add sodium bisulfate into the reactor, fully dissolve and mix evenly, then heat to 65°C, add 9 parts of 6% ammonium ...

Embodiment 3

[0032] A kind of hyperbranched copolymer ceramic reinforcing agent of the present invention, its RAFT preparation method is as follows:

[0033] (1) Synthesis of hyperbranched RAFT reagent: 7 parts of 2-(propyltrithiocarbonate)-2-methylpropionyl chloride are dissolved in 37 parts of butyl acetate, which is referred to as solution I; 22 parts of hyperbranched Put polyethyleneimine into the reactor, heat it to 60°C under stirring, then add solution I dropwise, after 1h dropwise addition, continue to react at 60°C for 4.5h, add ammonia solution to precipitate, wash with butyl acetate, The hyperbranched RAFT reagent is obtained after vacuum drying.

[0034] (2) RAFT polymerization: 28 parts of sodium methacryloyloxybutoxy phosphate, 8 parts of methacryloyloxyethyltrimethylammonium chloride, 4 parts of hyperbranched RAFT reagent in (1), 80 parts of water 1.3 parts of ferrous sulfate were added to the reactor, fully dissolved and mixed evenly, then heated to 50°C, and 11 parts of 9...

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Abstract

The invention relates to a novel hyper-branched copolymer ceramic enhancer, and a preparation method and an application of same. The hyper-branched copolymer ceramic enhancer is a hyper-branched polymer synthesized through a RAFT water solution polymerization process, wherein polyethylene imine serves as a center and an acryloyloxyalkoxyphosphate monomer and a cationic monomer copolymer serve as arms; the hyper-branched copolymer is 10000-50000 in average molecular weight and is less than 1.25 in molecular weight polydispersity coefficient. The hyper-branched copolymer ceramic enhancer has noinfluence on viscosity of ceramic green body slurry, has good enhancing effect and stable performance, and has wide application prospect.

Description

technical field [0001] The invention relates to a ceramic reinforcing agent, in particular to a hyperbranched copolymer ceramic reinforcing agent and its preparation method and application, and belongs to the technical field of ceramic reinforcing agent synthesis. Background technique [0002] In the production of ceramic industry, the blank is a very important link, which will directly affect the subsequent processing of ceramic production (such as blank forming, drying, glazing, printing, firing, etc.). The dry strength of the green body is an important indicator, which has an important impact on the yield and quality of the product. As a big country in the production of architectural ceramics, China has formed several larger ceramics. Due to the influence of local ceramic body raw materials, the difference in physical and chemical properties of ceramic raw materials in different production areas, and the use of clay raw materials due to the limitation of technology Limit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F230/02C08F220/34C04B35/634
Inventor 杨文思
Owner 广东智洁卫浴有限公司
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