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Method for preparing complex particles of polymers with ultraviolet absorption radical and inorganic oxide by ultrasound irradiation

A technology of inorganic oxides and composite particles, which is applied in the field of preparation of polymer composite materials, can solve the problems of reduced purity, reduced anti-ultraviolet performance of composite particles, and poor particle dispersibility, etc., to achieve fast reaction speed and good anti-aging Ultraviolet light performance, high conversion effect

Inactive Publication Date: 2008-12-31
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of polymer and inorganic oxide composite particles by in-situ emulsion polymerization has fast reaction speed, high conversion rate, and environmental protection. It can make inorganic particles and polymers chemically bonded. However, due to the residue of emulsifier and initiator in the process of preparing composite particles , the purity is reduced, so that the anti-ultraviolet performance of the composite particles is reduced, and the dispersion of the prepared particles is still not very good

Method used

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  • Method for preparing complex particles of polymers with ultraviolet absorption radical and inorganic oxide by ultrasound irradiation
  • Method for preparing complex particles of polymers with ultraviolet absorption radical and inorganic oxide by ultrasound irradiation
  • Method for preparing complex particles of polymers with ultraviolet absorption radical and inorganic oxide by ultrasound irradiation

Examples

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Effect test

Embodiment 1

[0035] Weigh 1g of titanium dioxide, 0.05g of vinyltrimethoxysilane coupling agent, and 10g of ethanol, disperse the titanium dioxide particles in ethanol dissolved in coupling agent, add them to the ultrasonic irradiation reactor, and then insert the ultrasonic horn into the reaction In the container, the power is 250W ultrasonic dispersion for 10 minutes, and then the slurry is transferred to a three-necked bottle with a thermometer, agitator and reflux condenser, reacted at a temperature of 65°C for 8 hours, dried at a temperature of 75°C and then ground Modified titanium dioxide particles were obtained. Modified titanium dioxide particles 1g, deionized water 50g, methyl methacrylate 5g, polymeric emulsifier maleic anhydride derivative sodium sulfonate (M12) 0.5g, polymeric ultraviolet absorber 2-hydroxyl-4-(3 - 0.45 g of methacrylate-2-hydroxypropoxy) benzophenone (BPMA) was added to the ultrasonic irradiation reactor, and then the ultrasonic horn was inserted into the rea...

Embodiment 2

[0037]Weigh 4g of silicon dioxide, 0.75g of vinyltrimethoxysilane coupling agent, and 50g of ethanol, disperse the silicon dioxide particles in ethanol dissolved in coupling agent, add them to the ultrasonic irradiation reactor, and then transform the ultrasonic waves into The web rod was inserted into the reactor, and the power was 180W for ultrasonic dispersion for 8 minutes, then the slurry was transferred to a three-necked bottle with a thermometer, agitator and reflux condenser, and reacted at a temperature of 60°C for 6 hours, and at a temperature of 70°C Grinding after drying to obtain modified silicon dioxide particles. Modified silica particles 4g, deionized water 100g, butyl acrylate 28g, polymeric emulsifier maleic anhydride derivative sodium sulfonate 5g, polymeric UV absorber 2-hydroxy-4-allyloxydiphenyl Add 6.5 g of ketone into the ultrasonic irradiation reactor, and then insert the ultrasonic horn into the reactor. Nitrogen was fed for about 8 minutes, the rate...

Embodiment 3

[0039] Weigh 2g of silicon dioxide, 0.65g of vinyltriethoxysilane coupling agent, and 30g of ethanol, disperse the silicon dioxide particles in ethanol dissolved in coupling agent, add them to an ultrasonic irradiation reactor, and then The horn was inserted into the reactor, and the power was 300W for ultrasonic dispersion for 5 minutes, then the slurry was transferred to a three-necked bottle with a thermometer, a stirrer and a reflux condenser, and reacted at a temperature of 45°C for 7 hours, and at a temperature of 65°C After drying at ℃, the modified silicon dioxide particles are obtained by grinding. Mix 2g of modified silica particles, 80g of deionized water, 25g of methyl methacrylate, 2g of polymeric emulsifier maleic anhydride derivative sodium sulfonate, polymeric UV absorber 2-hydroxy-4-methacryloyl Add 3.5 g of oxybenzophenone into the ultrasonic irradiation reactor, and then insert the ultrasonic horn into the reactor. Nitrogen was fed for about 6 minutes at a ...

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Abstract

Disclosed is a method for preparing polymer containing ultraviolet absorption radicals and for preparing inorganic oxide composite particle through ultrasonic irradiation. The method is characterized in that ultrasonic irradiation technique is introduced to the field of the preparation of polymer containing ultraviolet absorption radicals and inorganic oxide composite particle. Activation and dispersive action of ultrasonic sound are made used of to enable polymerisable emulsifier to generate free radicals to initiate reaction under the action of ultrasonic sound to connect inorganic ultraviolet screener and polymerisable organic ultraviolet absorbent to the polymer by means of chemical bonds through emulsion polymerization; in this way, polymer containing ultraviolet absorption radicals and inorganic oxide composite particle with high purity and good dispersivity and ultraviolet resistance can be prepared. The composite particle can be added to a matrix resin as addition agent to prevent the matrix resin from being degraded by ultraviolet light.

Description

technical field [0001] The invention relates to a preparation method of polymer and inorganic oxide composite particles containing ultraviolet absorbing groups, and belongs to the field of preparation of polymer composite materials. Background technique [0002] Polymer materials such as plastics, rubber, fibers, coatings, etc., will deteriorate in appearance and physical and mechanical properties when exposed to sunlight or strong ultraviolet rays, usually in the form of discoloration, loss of luster, silver streaks, erosion, cracks, and tensile strength , impact strength, elongation and electrical properties decline, etc., and aging occurs (Edited by Shanxi Chemical Research Institute, Plastic and Rubber Processing Aids, Beijing: Chemical Industry Press, 2002). Aging is a common problem of polymer materials, and there is almost no polymer material that does not age. At present, the method of polymer anti-ultraviolet protection is generally to add ultraviolet shielding age...

Claims

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Application Information

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IPC IPC(8): C08F2/44C08F2/56C08F2/24C08K9/06C08F220/12C08F218/08C08F212/08C08F220/30C08F212/02C08F222/24
Inventor 淡宜邹江鹏江龙杨明娇赵义
Owner SICHUAN UNIV
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