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Finishing type stone protection agent based on fluorosilicone acrylic resin, and preparation method thereof

A technology of fluorosilicone acrylic acid and acrylic resin, which is applied in the field of protective agents, can solve the problems of poor oil pollution protection ability, and achieve the effects of avoiding biological hazards, good water resistance, and shortening the curing time

Active Publication Date: 2020-01-03
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese invention patent application CN 104017488 A discloses a silicone stone protective agent, which is simple in process, low in cost, and has a good waterproof effect, but its protection ability to oil stains is poor; Chinese invention patent application CN 109233478 A discloses a Fluorosilicone stone protective agent introduces fluorine-containing compounds into the silicone protective agent, which improves the protective effect on oil pollution, but the fluorine-containing compound used is a perfluoroalkyl polymer with a fluorocarbon chain length

Method used

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  • Finishing type stone protection agent based on fluorosilicone acrylic resin, and preparation method thereof
  • Finishing type stone protection agent based on fluorosilicone acrylic resin, and preparation method thereof
  • Finishing type stone protection agent based on fluorosilicone acrylic resin, and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0046] Preparation of fluorosilicone acrylic resin solution: add 44.7g of butyl acetate into the reaction kettle and heat to 75°C, then add 0.2g of azobisisobutyronitrile once. Then 14.5g perfluorohexyl ethyl acrylate, 5.5g DCA-2208 (Guangzhou Ruiju Chemical Co., Ltd., molecular weight ≈ 1900) silicone monomer, 1.0g lauryl methacrylate, 1.0g cyclohexyl methacrylate , 2.5g of methyl methacrylate, 0.5g of hydroxypropyl methacrylate and 15.0g of butyl acetate were uniformly mixed to obtain a mixture, and the mixture was added dropwise to the reactor. After 2.5 hours of dripping, keep warm for 0.5 hours. Subsequently, 0.1 g of azobisisobutyronitrile dissolved in 10.0 g of butyl acetate was added dropwise to the reaction kettle, and the drop was completed in 0.5 hours. Finally, the temperature was raised to 95° C., kept at a constant temperature for 1.5 hours, and cooled to room temperature to obtain a fluorosilicone acrylic resin solution.

[0047] The structural formula of DCA-...

Embodiment 2

[0050] Preparation of resin solution: After heating 42g of methyl isobutyl ketone to 75°C, add 0.24g of azobisisobutyronitrile at one time, then add 17.3g of perfluorohexylethyl methacrylate, 6.6g of silane-modified ethylene Base monomer SMV (Guangzhou Double Bond Trading Co., Ltd., molecular weight ≈1500), 1.2g lauryl methacrylate, 4.2g methyl methacrylate, 0.6g hydroxyethyl methacrylate and 14g methyl isobutyl ketone After mixing, add the above-mentioned mixed solution dropwise to the methyl isobutyl ketone containing azobisisobutyronitrile, drop it in 2.5 hours, keep warm for 0.5 hour after the dropwise addition is completed, then dissolve 0.06g of azobisisobutyronitrile in 14g of formaldehyde In methyl isobutyl ketone, add above-mentioned methyl isobutyl ketone containing initiator dropwise in the solution that insulation finishes, 0.5 hour drops. Finally, the temperature was raised to 95° C., kept at a constant temperature for 1.5 hours, and cooled to room temperature to ...

Embodiment 3

[0055] Preparation of resin solution: Mix 24.5g butyl acetate and 24.5g methyl isobutyl ketone evenly, heat to 85°C, add 0.28g dibenzoyl peroxide at one time, then add 21.6g perfluorohexyl ethyl acrylate , 7.5g DCA-2206 (Guangzhou Ruiju Chemical Co., Ltd., molecular weight ≈ 1200), 4.9g isobornyl methacrylate, 1.0g hydroxyethyl methacrylate and 16.3g methyl isobutyl ketone are evenly mixed, and the Add the above mixed solution dropwise to the butyl acetate containing dibenzoyl peroxide, drop it in 3.5 hours, keep it warm for 1.5 hours after the addition is completed, then dissolve 0.07g of dibenzoyl peroxide in 16.3g of butyl acetate , Add dropwise the above-mentioned butyl acetate containing initiator in the solution that the insulation finishes, and finish dropping in 0.5 hour. Finally, the temperature was raised to 99° C., kept at a constant temperature for 2 hours, and the reaction was completed after cooling to room temperature to obtain the target polymer solution.

[0...

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Abstract

The invention discloses a finishing type stone protection agent based on fluorosilicone acrylic resin, and a preparation method thereof. The finishing type stone protection agent comprises, by weight,5-20 parts of a fluorosilicone acrylic resin solution, 10-50 parts of a silane coupling agent, 1-10 parts of low molecular weight hydroxyl-terminated silicone oil, 20-85 parts of a diluent and 0.5-2parts of a catalyst. The preparation method comprises the following steps: uniformly mixing the fluorosilicone copolymer resin solution, the silane coupling agent, the hydroxyl-terminated silicone oil, the diluent and the catalyst, and spraying the obtained mixture on the surface of a stone. A perfluorohexyl side group, a long siloxane side group, methacrylate and a side group containing a crosslinkable functional group exist in the molecular structure of the fluorosilicone acrylic resin. The preparation method has the advantages of reasonable cost, simple process and facilitation of large-scale production, and the prepared stone protection agent has good waterproof and oil-repellent effects, does not change the natural appearance or the air permeability of the stone, does not contain eight or more perfluoro chain segments, and meets the environmental protection requirement.

Description

technical field [0001] The invention relates to a stone protective agent, in particular to a decorative stone protective agent based on fluorosilicone acrylic resin and a preparation method thereof, belonging to the technical field of protective agents. [0002] technical background [0003] Decorative stone is an important decoration material for modern buildings. my country is a big importer of stone blocks and a big exporter of processed stone products. It is a veritable stone processing factory. According to the statistics of the China Stone Association, in 2016, 32% of the global stone production came from China, and there were 3,158 enterprises above designated size nationwide, achieving a main business income of 446.8 billion yuan, an increase of 11.6% year-on-year. With the continuous improvement of domestic urbanization and the popularization of commercial housing, domestic demand is also rising, and the demand for decorative stone cleaning, protection, renovation, ...

Claims

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Application Information

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IPC IPC(8): C09D151/08C09D183/04C09D7/63C09D5/16C08F283/12C08F220/24C08F220/20C08F220/18C08F220/14C04B41/49
CPCC04B41/4961C08F283/124C08L2201/08C09D5/1675C09D5/1687C09D151/085C09D183/04C08L83/04C08K5/5419C08L51/085C08F220/24C08F220/20C08F220/14C08F220/18C04B41/495C04B41/4922C04B41/4543
Inventor 任碧野金志利
Owner SOUTH CHINA UNIV OF TECH
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