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Preparation method of super-amphiphobic paint for wood-plastic composite material surface

A wood-plastic composite material and super-amphiphobic technology, applied in the coating and other directions, can solve the problems of acid-base aging of oil stains, water absorption deformation, etc., and achieve the effects of good acid resistance, low water absorption, and stable oleophobic performance

Active Publication Date: 2019-03-29
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method for superamphiphobic coatings on the surface of wood-plastic composite materials. The present invention uses wood-plastic composite materials as the base to solve the problems of water absorption deformation caused by high fiber content and oil stain acid-base aging. , prepared a super-amphiphobic coating that is widely applicable to various wood-plastic composite materials, and the coating of this invention can also be used on the surface of plastic, glass, cotton cloth, ceramics, paper, metal and other materials, expanding its application range

Method used

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  • Preparation method of super-amphiphobic paint for wood-plastic composite material surface
  • Preparation method of super-amphiphobic paint for wood-plastic composite material surface
  • Preparation method of super-amphiphobic paint for wood-plastic composite material surface

Examples

Experimental program
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Effect test

Embodiment 1

[0020] The mass ratios of glycidyl methacrylate (GMA) and heptadecanyl fluorodecyl methacrylate (FOEA) were weighed respectively to be 3g and 0.3g, azobisisobutyronitrile and sodium bisulfite to be 67mg and 42mg; All the reagents weighed were added to the reaction vessel, and 5ml of trifluorotoluene was added to the vessel. Seal the container and pass nitrogen gas for 30 minutes to remove the oxygen in the container; place the reaction container in a collector type magnetic stirrer and heat it for 60 minutes to make the reaction monomer in the reaction container fully react with the initiator and catalyst to produce a prepolymer After the reaction, the product was taken out; the prepolymer was added dropwise to the n-hexane vortex, and the flocculent precipitate was formed, the n-hexane was filtered, and the solvent was volatilized to obtain a pure prepolymer (PGMA-r-PFOEA).

[0021] Weigh the initiator azobisisobutyronitrile, catalyst NaHSO 3 The amount of each 0.1g, emulsif...

Embodiment 2

[0067] The mass ratios of glycidyl methacrylate (GMA) and heptadecanyl fluorodecyl methacrylate (FOEA) were weighed respectively to be 3g and 1.29g, azobisisobutyronitrile and sodium bisulfite to be 67mg and 42mg; All the reagents weighed were added to the reaction vessel, and 5ml of trifluorotoluene was added to the vessel. Seal the container and feed nitrogen gas for 45 minutes to remove the oxygen in the container; place the reaction container in a heat-collecting magnetic stirrer and heat it for 45 minutes to fully react the reaction monomer in the reaction container with the initiator and catalyst to produce a prepolymer After the reaction, the product was taken out; the prepolymer was added dropwise to the n-hexane vortex, and the flocculent precipitate was formed, the n-hexane was filtered, and the solvent was volatilized to obtain a pure prepolymer (PGMA-r-PFOEA).

[0068] Weigh respectively initiator azobisisobutyronitrile, catalyst NaHSO The amount is each 0.1g, emul...

Embodiment 3

[0072] The mass ratios of glycidyl methacrylate (GMA) and heptadecanyl fluorodecyl methacrylate (FOEA) were weighed respectively to be 3g and 0.3g, azobisisobutyronitrile and sodium bisulfite to be 67mg and 42mg; All the reagents weighed were added to the reaction vessel, and 5ml of trifluorotoluene was added to the vessel. Seal the container and feed nitrogen gas for 36 minutes to remove the oxygen in the container; place the reaction container in a heat-collecting magnetic stirrer and heat it for 36 minutes, so that the reaction monomer in the reaction container can fully react with the initiator and catalyst to produce a prepolymer After the reaction, the product was taken out; the prepolymer was added dropwise to the n-hexane vortex, and the flocculent precipitate was formed, the n-hexane was filtered, and the solvent was volatilized to obtain a pure prepolymer (PGMA-r-PFOEA).

[0073] Weigh respectively initiator azobisisobutyronitrile, catalyst NaHSO The amount is each 0...

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Abstract

The invention discloses a preparation method of a super-amphiphobic paint for a wood-plastic composite material surface. The method includes: weighing polymerization reaction monomers respectively, taking azodiisobutyronitrile as the initiator and adopting sodium hydrogen sulfite as the catalyst to prepare a prepolymer; weighing an emulsifier, monomers and deionized water, and mixing the substances evenly; then conducting ultrasonic dispersion and filtration to obtain surface modifiable polymer nanospheres, and placing the surface modifiable polymer nanospheres into a vacuum oven for low temperature drying to a constant weight; dissolving the obtained prepolymer with a solvent, then adding the obtained powered polymer nanospheres, and conducting magnetic stirring to complete hybridizationof the polymer nanospheres and the fluorinated polymer, thus obtaining a super-amphiphobic paint; treating a composite material substrate to obtain a clean composite material substrate, soaking the clean composite material substrate in the prepared super-amphiphobic paint, performing magnetic stirring, conducting drying in an oven, thus obtaining a layer of super-amphiphobic coating loaded on thewood-plastic composite material surface. The prepared super-amphiphobic coating has stable hydrophobic and oleophobic performance, also has good acid and alkali resistance, low water absorption and aging resistance, and can be used for the surfaces of wood-plastic composite materials, plastics, metals and other materials.

Description

technical field [0001] The invention belongs to the technical field of super-amphiphobic coatings, in particular to a preparation method of super-amphiphobic coatings used on the surface of wood-plastic composite materials. Background technique [0002] Wood-plastic composite (WPC) is a kind of green environmental protection material that has emerged in recent years, and is widely used in daily life and construction industry. The main raw materials of wood-plastic composite materials are agricultural and forestry wastes (such as wood powder, bamboo powder, etc., the main components are plant fibers) and waste plastics (such as PE, PP, etc.), and their products are mainly used as substitutes for natural wood. Wood-plastic composite materials are filled with a large number of plant fibers, and plant fibers have the disadvantage of high water absorption, so wood-plastic composite materials have certain water absorption. Water absorption will cause plant fibers to swell, change...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/14C08F220/32C08F220/24C08F212/08
CPCC08F212/08C08F220/32C09D133/16C08F220/325C08L33/14C08F220/24C08F218/08
Inventor 侯成敏李娜张效林寇艳萍
Owner XIAN UNIV OF TECH
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