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Preparation method of organic silicon-polymethyl methacrylate composite materials

A technology of polymethyl methacrylate and composite materials, which is applied in the field of preparation of LED optical materials, can solve problems such as PMMA modification, and achieve the effects of strong water resistance and aging resistance, excellent optical properties, and excellent mechanical strength

Active Publication Date: 2014-04-30
GUANGDONG UNILUMIN ENERGY SAVINGS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In reality, it is found that silicone resin and liquid PMMA resin are two completely incompatible systems, so it is impossible to modify PMMA by blending and other methods

Method used

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  • Preparation method of organic silicon-polymethyl methacrylate composite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step a. Under nitrogen protection, add KH-571, dimethyldiethoxysilane and 1% sulfuric acid (also hydrochloric acid, phosphoric acid or trifluoroacetic acid) aqueous solution into the reactor at a mass ratio of 100:200:38 Mix evenly, stir and react quickly at room temperature for 2 hours to obtain a transparent solution system; slowly heat up the system and start vacuuming, control the system temperature below 50°C, and thoroughly vacuum out the alcohol and excess water generated by the reaction to obtain a transparent and viscous solution Oil; after cooling to room temperature, add 100 parts of 30-60°C boiling range petroleum ether and 1.5g NaHCO to the oil 3 Powder, stirred evenly and then suction filtered, the obtained liquid was heated to 50°C to remove the petroleum ether in a vacuum, and a highly transparent and high-purity acryloyloxy silicone resin was obtained.

[0035] Step b. Mix the acryloyloxy silicone resin prepared in step a, methyl methacrylate (MMA) and ...

Embodiment 2

[0038] Step a, under nitrogen protection, KH-571, dimethyldiethoxysilane, diphenyldimethoxysilane, 1% sulfuric acid (also can be hydrochloric acid, phosphoric acid or trifluoroacetic acid) aqueous solution at 150: Add the mass ratio of 100:100:37 into the reactor and mix evenly, stir and react quickly at room temperature for 2 hours to obtain a transparent solution system; raise the temperature of the system slowly and start vacuuming, control the temperature of the system below 50°C, and remove the alcohol generated by the reaction and excess The water was vacuumed thoroughly to obtain a transparent viscous oil; after cooling to room temperature, 100 parts of 30-60°C boiling range petroleum ether and 1.5g NaHCO were added to the oil 3 Powder, stirred evenly and then suction filtered, the obtained liquid was heated to 50°C to remove the petroleum ether in a vacuum, and a highly transparent and high-purity acryloyloxy silicone resin was obtained.

[0039] Step b. Mix the acrylo...

Embodiment 3

[0042] Step a. Under nitrogen protection, mix KH-570, dimethyldiethoxysilane, diphenyldimethoxysilane, and 1% sulfuric acid (also hydrochloric acid, phosphoric acid or trifluoroacetic acid) aqueous solution at 150: Add the mass ratio of 100:100:44 into the reactor and mix evenly, stir and react quickly at room temperature for 2 hours to obtain a transparent solution system; raise the temperature of the system slowly and start vacuuming, control the temperature of the system below 50°C, and remove the alcohol generated by the reaction and excess The water was vacuumed thoroughly to obtain a transparent viscous oil; after cooling to room temperature, 100 parts of 30-60°C boiling range petroleum ether and 1.5g NaHCO were added to the oil 3 Powder, stirred evenly and then suction filtered, the obtained liquid was heated to 50°C to remove the petroleum ether in a vacuum, and a highly transparent and high-purity acryloyloxy silicone resin was obtained.

[0043] Step b. Mix the acryl...

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Abstract

The invention discloses a preparation method of organic silicon-polymethyl methacrylate composite materials. The preparation method comprises the steps as follows: a, preparing acryloyl silicone resin; b, uniformly mixing the acryloyl silicone resin prepared in the step a with methyl methacrylate and free radical polymerization initiators, adding the mixed materials into a mould, heating to 65 to 75 DEG C for solidification for 2 hours, and slowly heating up to 120 DEG C for aging for 0.5 to 1 hour, thereby obtaining the organic silicon-polymethyl methacrylate composite materials. The method of the invention utilizes acryloyl siloxane and various organosilicone monomers to polymerize high-transparency silicone resin which has the advantages of good mechanical strength, and strong water resistance and aging resistance and can be formed through injection molding, thereby being suitable for the preparation of precision optical components belonging to the fields of LEDs. The method solves the problems that common organic glass has poor aging resistance, anti-cold and hot shock, water resistence, transmittance, mechanical strength and the like.

Description

technical field [0001] The invention relates to a preparation process of an LED optical material, in particular to a preparation method of an organic silicon-polymethyl methacrylate composite material. Background technique [0002] LED is a new type of green and energy-saving light source. It can not only directly convert electrical energy into light energy with high efficiency, but also has a service life of up to tens of thousands of hours to 100,000 hours. It is also energy-saving, environmentally friendly and mercury-free. , small size, fast response, strong earthquake resistance, less maintenance, no infrared radiation and no mercury pollution, good color rendering, rich color gamut, etc., have become the active development direction of countries all over the world, and become the most popular in people's daily life. , The most eye-catching light source is the inevitable trend of international lighting and display development. Whether it is an LED lamp bead package or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/12C08F220/14C08L51/08
Inventor 孙自才张春旺林洺锋
Owner GUANGDONG UNILUMIN ENERGY SAVINGS TECH