Interpenetrating network structure polymer of silicone rubber-fluorocarbon coating and preparation method thereof

A technology of interpenetrating network structure and fluorocarbon coating, applied in the direction of coating, can solve the problems of poor solubility of fluoropolymer and difficult preparation method, and achieve the effects of strong paintability, convenient construction and good elasticity

Active Publication Date: 2020-04-24
湖北航泰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because silicone rubber is a cross-linked polymer, the solubility of fluoropolymers is poor, and it is difficult to use traditional interpenetrating network structure preparation methods.

Method used

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  • Interpenetrating network structure polymer of silicone rubber-fluorocarbon coating and preparation method thereof
  • Interpenetrating network structure polymer of silicone rubber-fluorocarbon coating and preparation method thereof
  • Interpenetrating network structure polymer of silicone rubber-fluorocarbon coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of interpenetrating network structure polymer of silicone rubber-fluorocarbon coating, it is by the addition of methacryloxypropyl cage type polysilsesquioxane (being methacryloxypropyl POSS) The compound forms an interpenetrating network structure with silicone rubber and fluoropolymer, and its structural schematic is shown in Formula 1.

[0032] The preparation method of the interpenetrating network structure polymer of the above-mentioned silicone rubber-fluorocarbon coating is: add 2 g of methacryloxypropyl POSS adducts to 40 g of solvent tetrahydrofuran, and then add 40 g of hexafluorobutyl acrylate, 17 g of molecular weight 5000 hydroxyl-terminated polydimethylsiloxane, 1g initiator benzoyl peroxide, after stirring evenly, reflux at 80°C for 5 hours to obtain polymer interpenetrating network structure solution, evaporate most of the solvent and dry naturally to obtain silicon Interpenetrating network polymer of rubber-fluorocarbon coatings.

Embodiment 2

[0034] A kind of interpenetrating network structure polymer of silicone rubber-fluorocarbon coating, it is by the addition of methacryloxypropyl cage type polysilsesquioxane (being methacryloxypropyl POSS) The compound forms an interpenetrating network structure with silicone rubber and fluoropolymer, and its structural schematic is shown in Formula 1.

[0035] The preparation method of the interpenetrating network structure polymer of the above-mentioned silicone rubber-fluorocarbon coating is: add 5 g of methacryloxypropyl POSS adduct into 40 g of solvent n-heptane, and then add 5 g of hexafluorobutyl methacrylate Esters, 49.9g of hydroxyl-terminated polydimethylsiloxane with a molecular weight of 100,000, 0.1g of initiator azobisisobutyronitrile, stirred evenly, and refluxed at 90°C for 2 hours to obtain a polymer interpenetrating network solution, evaporated After removing most of the solvent and drying naturally, the interpenetrating network structure polymer of silicone ...

Embodiment 3

[0037] A kind of interpenetrating network structure polymer of silicone rubber-fluorocarbon coating, it is by the addition of methacryloxypropyl cage type polysilsesquioxane (being methacryloxypropyl POSS) The compound forms an interpenetrating network structure with silicone rubber and fluoropolymer, and its structural schematic is shown in Formula 1.

[0038] The preparation method of the interpenetrating network structure polymer of the above-mentioned silicone rubber-fluorocarbon coating is: add 2 g of methacryloxypropyl POSS adducts in 40 g of solvent toluene, and then add 20 g of dodecafluoroheptyl methacrylate , 37.5g of hydroxyl-terminated polydimethylsiloxane with a molecular weight of 50,000, 0.5g of initiator azobisisobutyronitrile, after stirring evenly, reflux at 70°C for 6h to obtain a polymer interpenetrating network structure solution, and evaporate most of the The interpenetrating network structure polymer of the silicone rubber-fluorocarbon coating is obtaine...

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Abstract

The invention discloses a silicon rubber-fluorocarbon coating interpenetrating network structure polymer, wherein the interpenetrating network structure is formed by an addition product of methyl acryloyloxypropyl cage type polysilsesquioxane, silicon rubber and a fluorine-containing polymer. With partial double bonds kept, the addition product of methylacryloyloxypropyl POSS is copolymerized witha fluorine-containing monomer at the time of crosslinking, to form a fluorine-containing polymer chain; some groups of the methylacryloyloxypropyl POSS are connected to a trimethoxyl silicon group torealize ability of crosslinking hydroxyl-terminated polydimethylsiloxane; then by taking the addition product of methylacryloyloxypropyl POSS as a bridge, the silicon rubber and the fluorine-containing polymer are organically combined to form the interpenetrating network structure. The preparation method disclosed by the invention is simple, and improves the heat resistance and strength of the polymer interpenetrating network structure; the obtained polymer system has the characteristics of high mechanical strength, high heat resistance, good weather resistance, strong adhesion, perfect elasticity and the like, and can be used as materials such as coating, adhesive and elastomer.

Description

technical field [0001] The invention relates to an interpenetrating network structure polymer of silicone rubber-fluorocarbon coating, which belongs to the technical field of macromolecule fine chemical industry. Background technique [0002] Silicone materials and fluoropolymers are the two most commonly used hydrophobic materials with good effects. Among them, silicone rubber materials are widely used in many fields due to their good hydrophobicity and good weather resistance; fluoropolymers have excellent Hydrophobic and oleophobic, good chemical stability and widely used as high temperature resistant materials, insulating materials, hydrophobic materials, etc. However, the mechanical properties of silicone rubber without fillers are poor, while the processing performance and chemical stability of silicone rubber with fillers are significantly reduced; fluoropolymers have strong crystallinity due to their high electronegativity of fluorine atoms. Machinability is relativ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/16C09D183/04C09D7/65
CPCC08L2201/08C08L2205/025C08L2205/03C08L2205/04C09D5/28C09D133/16C09D183/04C08L83/04
Inventor 黄驰胡铭杰刘张洋
Owner 湖北航泰科技有限公司
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