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Preparation method of polymethyl methacrylate/titanium dioxide nano-grade composite material

A technology of polymethyl methacrylate and nanocomposite materials, which is applied in the field of composite materials, can solve problems affecting the development of industrialization, complex preparation processes, harsh reaction conditions, etc., and achieve simple preparation methods, increased refractive index, and good industrialization prospects Effect

Active Publication Date: 2014-06-18
嘉兴高正新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above methods more or less have problems such as complex preparation process, harsh reaction conditions, and many operations required, which will definitely affect the development of industrialization

Method used

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  • Preparation method of polymethyl methacrylate/titanium dioxide nano-grade composite material
  • Preparation method of polymethyl methacrylate/titanium dioxide nano-grade composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put 6.17g methyl methacrylate, 3.26g γ-methacryloxypropyl trimethoxysilane, 0.15g azobisisoheptanonitrile into the autoclave to prepare mixed solution A; weigh 10g titanium Acetate isopropyl ester, drop by drop into the reaction kettle; measure 4g of absolute ethanol, 1.65g of concentrated hydrochloric acid in a beaker and dissolve in 45mL of tetrahydrofuran (the volume ratio of it and the mixed solution A is about 4.5:1), and then Pour the mixed liquid B into the reaction kettle; pass nitrogen gas into the reaction kettle for 3 minutes, drive away the oxygen in the liquid, cover the lid, put it into a metal can, seal it and put it in a constant temperature of 140°C In the tank, react for 10 hours; after the reaction is completed, wait for the metal tank to cool down completely, and then take out the reactor. The prepared product solution was spin-coated on a silicon wafer by using a homogenizer at a rotation speed of 3000 rpm and a spin-coating time of 40 seconds. The...

Embodiment 2

[0031]Put 5.05g of methyl methacrylate, 1.43g of γ-glycidyl etheroxypropyl trimethoxysilane, 2.85g of maleic anhydride, and 0.17g of dibenzoyl peroxide into the autoclave to prepare mixed solution A; Weigh 4g of isobutyl titanate, drop by drop into the reaction kettle; measure 3g of absolute ethanol, 0.76g of concentrated hydrochloric acid, etc. in a beaker and dissolve them in 35mL of methyl ethyl ketone (the volume ratio of it to the mixed solution A is about 5: 1), then pour the mixed liquid B into the reaction kettle; pass nitrogen into the reaction kettle for 3 minutes, drive away the oxygen in the liquid, cover the lid, put it into a metal can, and put it in the temperature In a constant temperature box at 100°C, react for 12 hours; after the reaction is completed, wait for the metal tank to cool completely, and then take out the reaction kettle. The prepared product solution was spin-coated on a silicon wafer by using a homogenizer at a rotation speed of 2500 rpm and a ...

Embodiment 3

[0034] Put 7.26g of methyl methacrylate, 2.74g of vinyltrimethoxysilane, and 0.05g of azobisisobutyronitrile into a high-pressure reactor to prepare a mixed solution A; weigh 2g of n-butyl titanate, drop by drop Add it dropwise into the reaction kettle; measure 2g of absolute ethanol, 0.83g of concentrated hydrochloric acid in a beaker and dissolve it in 30mL of tetrahydrofuran (the volume ratio of it to the mixed solution A is about 3:1), and then pour the mixed solution B into In the reaction kettle; pass nitrogen into the reaction kettle for 3 minutes, drive away the oxygen in the liquid, cover the lid, put it into a metal can, and put it into a thermostat with a temperature of 120°C after closing it, and react for 8 hours ; After the reaction is completed, the metal tank is completely cooled, and then the reactor is taken out. The prepared product solution was spin-coated on a silicon wafer by using a homogenizer at a rotation speed of 3500 rpm and a spin-coating time of 5...

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Abstract

The invention provides a solvothermal polymerization method of a polymethyl methacrylate / titanium dioxide nano-grade composite material. Materials such as methyl methacrylate, an initiator, a titanic acid ester precursor, a silane-containing copolymerization monomer, a synergetic copolymerization monomer, and a solvent are placed in a high-pressure reaction vessel; deaeration is carried out by using nitrogen; and a reaction is carried out in a high-temperature sealed system; a reaction temperature and a reaction time are controlled; when reaction is finished, the obtained product solution is coated on a silicon ship, and is subject to an annealing treatment, such that a polymethyl methacrylate / titanium dioxide nano-grade composite film is obtained. With the solvothermal preparation method provided by the invention, the polymerization of methyl methacrylate and the production of titanium dioxide can be finished in one step. Therefore, the method is advantaged in less steps, simple operation, fast and controllable reaction, mild reaction conditions, and suitability for large-scale productions. The prepared polymethyl methacrylate / titanium dioxide composite film is advantaged in good transparency, high refractive index, and improved ultraviolet resistance. The material can be widely applied in the filed of optics.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a method for preparing a polymethyl methacrylate / titanium dioxide nanocomposite material. Background technique [0002] Polymethyl methacrylate is a colorless and transparent thermoplastic. It has excellent light transmission performance: the visible light transmittance is 92%, which is higher than that of ordinary glass; the ultraviolet light transmittance is 73%, which is much higher than 0.6% of ordinary glass, and the infrared light below 2800nm ​​can be very good pass. With a refractive index of 1.49, it is a suitable polymer matrix. Titanium dioxide has the advantages of low cost, good stability, and non-toxicity to the human body. It is a widely used inorganic semiconductor material. Moreover, titanium dioxide is widely used in sensors, electronic coatings, paint coatings, photocatalysts and other chemical raw materials because of its gas sensitivity, pressu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L33/12C08K3/22C08F220/14
Inventor 金婕妤戚嵘嵘
Owner 嘉兴高正新材料科技股份有限公司