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A kind of pmma board that blocks infrared energy and saves energy and preparation method thereof

A sheet and infrared technology, applied in the field of infrared blocking and energy saving PMMA sheet and its preparation, can solve the problems of low room temperature, sacrificing the visible light utilization rate, reducing the full-spectrum light transmittance, etc., and achieves good permeability and strong weather resistance. , reduce the effect of infrared radiation

Active Publication Date: 2021-12-31
ZHEJIANG LONGYOU ZHANYU ACRYLIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat in the atmosphere is mainly transmitted through infrared rays. At present, there are high-transmittance daylighting panel products on the market that can transmit a large amount of visible light, as well as a large amount of ultraviolet rays and almost all infrared rays; if the product is to be resistant to The effect of ultraviolet rays and anti-infrared rays must reduce the light transmittance of the full spectrum, thus sacrificing the utilization rate of visible light
As far as the current existing technology is concerned, for PMMA sheets that block infrared and ultraviolet rays, it is still difficult to block part or all of the infrared rays in sunlight according to different heat requirements, so as to ensure sufficient light while maintaining relative low room temperature

Method used

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Examples

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preparation example Construction

[0049] The second aspect of the present invention provides a kind of preparation method of the PMMA sheet material of described barrier infrared energy-saving, and step comprises at least:

[0050] (1) Take by weighing MMA, mold release agent, auxiliary devolatilization agent and mix, obtain pre-mixture;

[0051] (2) Add infrared blocking agent, initiator, release agent, devolatizer, and chain transfer agent to the pre-mixture, stir and mix until uniform, heat to 65°C-95°C, pre-polymerize for 15min-60min and then cool to 20 ℃-40℃ to get mixed slurry;

[0052] (3) Pour the mixed slurry into the mold, polymerize in a water bath at 40°C-60°C for 12h-48h, then continue to react at 100°C-125°C for 1.5h-2.5h, then cool naturally to room temperature, and the mold is ready have to.

[0053] Preferably, the preparation method of the PMMA sheet material that blocks infrared energy saving, the steps include:

[0054] (1) Take by weighing MMA, mold release agent, auxiliary devolatiliza...

Embodiment 1

[0063] A PMMA plate material for blocking infrared energy and saving energy. The raw materials include, by weight, 100 parts of MMA, 0.3 part of an initiator, 0.15 parts of a chain transfer agent, 0.6 part of a release agent, and 0.15 parts of a volatilization aid.

[0064] The raw material also includes an infrared blocking agent, and the weight ratio of the MMA to the infrared blocking agent is 1:0.05; the infrared blocking agent is an inorganic ceramic powder; the inorganic ceramic powder is selected from a combination of silicon nitride and titanium nitride , a series of nano-ceramic powder products purchased from Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences, the average particle size of the silicon nitride is 25nm, and the average particle size of the titanium nitride is 20nm. The weight ratio of titanium nitride and silicon nitride is 1:3. The initiator is benzoyl peroxide. The transfer agent is n-butylmercaptan. Described release agent is pentaeryt...

Embodiment 2

[0069] A PMMA plate material for blocking infrared energy and saving energy. The raw materials include: 90 parts of MMA, 0.2 part of initiator, 0.1 part of chain transfer agent, 0.4 part of release agent, and 0.1 part of devolatization aid in parts by weight.

[0070] The raw material also includes an infrared blocking agent, and the weight ratio of the MMA to the infrared blocking agent is 1:0.01; the infrared blocking agent is an inorganic ceramic powder; the inorganic ceramic powder is selected from a combination of silicon nitride and titanium nitride , a series of nano-ceramic powder products purchased from Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences, the average particle size of the silicon nitride is 100nm, and the average particle size of the titanium nitride is 20nm. The weight ratio of titanium nitride and silicon nitride is 1:1. The initiator is benzoyl peroxide. The transfer agent is n-butylmercaptan. Described release agent is pentaerythrito...

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Abstract

The invention relates to the technical field of PMMA plates, and provides a PMMA plate for blocking infrared energy and saving energy. In parts by weight, the raw materials at least include: 80-120 parts of MMA, 0.5-15 parts of infrared blocking agent, 0.1-0.5 parts of initiator, 0.05-0.3 part of chain transfer agent, 0.1-1 part of release agent, 0.05-0.3 part of devolatizing agent. The invention also provides a preparation method of the PMMA board which blocks infrared energy and saves energy.

Description

technical field [0001] The present invention relates to the technical field of PMMA plates, in particular to a PMMA plate for blocking infrared and energy saving and a preparation method thereof. Background technique [0002] Polymethyl methacrylate (PMMA for short), commonly known as acrylic or plexiglass, is a thermoplastic with high transparency and a density of about 1170-1200kg / m 3 , It is half of glass, and its strength is higher than that of glass. It is corrosion resistant, has certain UV resistance, weather resistance, good insulation, and the glass transition temperature is about 85-165 ° C, easy to process. These properties make PMMA useful in many fields, such as automobiles, advertising signs, medicine, electronics, etc. The heat in the atmosphere is mainly transmitted through infrared rays. At present, there are high-transmittance daylighting panel products on the market that can transmit a large amount of visible light, as well as a large amount of ultraviole...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F120/14C08F2/38C08F2/44C08K3/34C08K3/28C08K5/103
CPCC08F120/14C08F2/38C08F2/44C08K3/34C08K3/28C08K5/103C08K2201/011C08K2201/003
Inventor 袁凯云傅立忠夏志方徐汝清
Owner ZHEJIANG LONGYOU ZHANYU ACRYLIC
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