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Fluoropolymer modified polyacrylate dispersion and its preparation and use

The technology of polyacrylate emulsion and methyl methacrylate is applied in the field of fluorine-containing polymer modified polyacrylate emulsion and its preparation, which can solve the problems of poor compatibility and toxicity of polyacrylic resin, and improve water resistance. High performance and self-cleaning, simple production process, overcoming expensive effects

Inactive Publication Date: 2005-03-16
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"Industrial Coatings" published in 2002 "the development of acrylic resin for room temperature cross-linked fluorine coatings" used resin is not water-based, fluorine resin and polyacrylic resin compatibility is not good, the solvent used in the synthesis of polyacrylic resin is Xylene, toxic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment one, (mass percentage %)

[0038] Weigh 5% polytetrafluoroethylene micropowder in 45.7% water, add 1.0% fluorocarbon emulsifier, heat to 45°C for pre-emulsification for 1 hour, then add 0.4% sodium dodecylbenzenesulfonate, emulsifier OP-10 0.3 %, add 15% water to the pre-emulsified polytetrafluoroethylene and pour it into a four-necked reaction flask equipped with a stirrer, a reflux condenser, and a constant temperature heating sensor, and stir for about 10 minutes. When the temperature reaches 40°C, use "half "Hungry drop method", first add 20% of 32% mixed monomer (12.8% butyl acrylate, 12.8% methyl methacrylate, 6.4% styrene) at a drop rate of 1-2 drops per second, and continue heating After the temperature reaches 70°C, add 25% of 0.3% initiator dropwise at a rate of 4 drops per second, and continuously add 0.3% of the pH regulator sodium bicarbonate, keep the temperature at 70°C, drop for 2-3 hours After the remaining mixed monomer and initiator are fi...

Embodiment 2

[0040] Weigh 3% polytetrafluoroethylene micropowder in 50% water, add 2% fluorocarbon emulsifier, heat at 50°C for pre-emulsification for 1 hour, then add sodium dodecylbenzenesulfonate 0.24%, emulsifier OP-10 0.46% Add 13.5% water to the pre-emulsified polytetrafluoroethylene and pour it into a four-necked reaction flask equipped with a stirrer, a reflux condenser, and a constant temperature heating sensor, and stir for about 30 minutes. When the temperature reaches 50°C, use "semi-starved Dropping method", first add 10% of 33% mixed monomer (including 18% butyl acrylate, 10% methyl methacrylate, 5% styrene) at a dropping speed of 1-2 drops per second, and continue heating. After the temperature reaches 60°C, add 22% of 0.4% initiator and pH regulator sodium bicarbonate 0.4% at a rate of 4 drops per second, keep the temperature at 75°C, and drop the remaining monomer and initiator in 3 hours. Cooling and discharging, after the emulsion is completely cooled, adjust its pH to 7...

Embodiment 3

[0042]Weigh 1% polytetrafluoroethylene micropowder in 48.5% water, add 1.5% fluorocarbon emulsifier, heat at 60°C for pre-emulsification for 1 hour, then add 0.41% sodium dodecylbenzenesulfonate, emulsifier OP-10 0.29% Add 17.5% water to the pre-emulsified polytetrafluoroethylene and pour it into a four-necked reaction flask equipped with a stirrer, a reflux condenser, and a constant temperature heating sensor, and stir for about 10 minutes. When the temperature reaches 40°C, use "semi-starved Dropping method", first add 15% of 30% of mixed monomers (10% of butyl acrylate, 15% of methyl methacrylate, 5% of styrene) at a rate of 1-2 drops per second, and continue heating. After the temperature reaches 50°C, add 25% of 0.3% initiator and pH regulator sodium bicarbonate 0.3% at a rate of 4 drops per second, keep the temperature at 80°C, and drop the remaining monomer and initiator in 2 hours. Cooling and discharging, after the emulsion is completely cooled, adjust its pH to 7 wit...

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Abstract

The invention relates to structural elements represented by constitutional formula (I) and (II), which is linear macromolecular luminescent material in linear random arrangement by the mol ration of 1 : 0.5 - 1:200 and molecular weight 20000-100000 containing 8-hydroxyquinoline metallic complex, the preparation comprises copolymerizing polyalkene monomer of 8hydroxyquinoline metallic complex containing a polymerisable functional group with polyalkenes monomers through initiating agent at 20-200 deg. C.

Description

Technical field: [0001] The invention relates to the synthesis of a fluorine-containing polymer modified polyacrylate emulsion. Specifically, the acrylate monomer is added dropwise in a semi-starved state, and the emulsion polymerization is carried out in a swollen helical polytetrafluoroethylene long carbon chain ; At the same time, the present invention also relates to a fluorine-containing polymer modified polyacrylate emulsion and its preparation method and application in the coating base material or electrophoretic paint base material. Background technique: [0002] PTFE micropowder has good thermal stability and chemical inertness, and tetrafluoroethylene monomer has perfect symmetry so that the attraction force and surface energy between PTFE micropowder molecules are low. The closely arranged fluorine atoms on the outer layer of the carbon skeleton effectively prevent the exposure of the carbon-carbon chain, making it have excellent weather resistance, high temperatu...

Claims

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Application Information

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IPC IPC(8): C08F2/22C08F2/44C08F220/10
Inventor 王洪艳陈正霞万建华
Owner JILIN UNIV
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