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Highly-impact-resistant highly-light-transmitting highly-heat-insulating polymethylmethacrylate composite material and preparation method thereof

A technology of polymethyl methacrylate and composite materials, which is applied in the field of building thermal insulation materials to achieve the effect of improving impact strength

Inactive Publication Date: 2016-05-11
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have not fundamentally solved the problem of heat dissipation of transparent enclosure structures, or the thermal insulation methods of these glass components are far from meeting our expectations (Liu Nianxiong, Qin Youguo, Building Thermal Environment, Tsinghua University Press, 2005 )

Method used

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  • Highly-impact-resistant highly-light-transmitting highly-heat-insulating polymethylmethacrylate composite material and preparation method thereof
  • Highly-impact-resistant highly-light-transmitting highly-heat-insulating polymethylmethacrylate composite material and preparation method thereof
  • Highly-impact-resistant highly-light-transmitting highly-heat-insulating polymethylmethacrylate composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Mix and stir 150g tetraethyl orthosilicate and 170g absolute ethanol at 70°C for 30min, add 0.1g hydrochloric acid, stir at room temperature for 30min and then let stand for 180min, then add 0.01g sodium hydroxide, stir until it is completely dissolved, After the above solution was left to stand for 6 hours to obtain a wet gel, add 1g of N,N'-carbonyldiimidazole to the wet gel, let it stand at 60°C for 1 hour, and then add 1g of N,N'-carbonyldiimidazole with a number average molecular weight of 5000 and a vinyl content of 5% by mole Amino single-terminated polydimethyldivinylsiloxane, let stand at 60°C for 24h, put the product in CO 2 In a supercritical high-pressure extraction device, CO 2 The medium is subjected to supercritical drying at a temperature of 50°C and an air pressure of 10MPa for 3 hours, that is, functionalized silica airgel;

[0032] (2) Add 10 g of the functionalized silica airgel obtained in step (1) to 100 g of methyl methacrylate, then ultrason...

Embodiment 2

[0034] (1) Mix and stir 80g ethyl orthosilicate and 100g absolute ethanol at 50°C for 5 minutes, add 0.1g hydrochloric acid, stir at room temperature for 5 minutes and then let it stand for 30 minutes, then add 0.01g sodium hydroxide and stir until it is completely dissolved. After the above solution was left to stand for 2 hours to obtain a wet gel, add 1g of N,N'-carbonyldiimidazole to the wet gel, let it stand at 65°C for 1 hour, then add 1g of number average molecular weight, number average molecular weight, 1000 vinyl content mole percent 0.1% amino double-terminated polydimethyldivinylsiloxane, stand at 60°C for 24h, put the product in CO 2 In a supercritical high-pressure extraction device, CO 2 The medium is subjected to supercritical drying for 3 hours at a temperature of 35°C and an air pressure of 7 MPa, that is, functionalized silica airgel;

[0035] (2) Add 5 g of the functionalized silica airgel obtained in step (1) to 100 g of methyl methacrylate, then ultrason...

Embodiment 3

[0037] (1) Mix and stir 96g ethyl orthosilicate and 145g absolute ethanol at 65°C for 24min, add 0.5g hydrochloric acid, stir at room temperature for 12min and then let stand for 87min, then add 0.13g sodium hydroxide, stir until it is completely dissolved, After the above solution was left to stand for 5 hours to obtain a wet gel, add 1g of N,N'-carbonyldiimidazole to the wet gel, let it stand at 68°C for 1 hour, and then add 1g of N,N'-carbonyldiimidazole with a number average molecular weight of 3500 and a vinyl content of 3.4% Amino single-terminated polydimethyldivinylsiloxane, let stand at 60°C for 24h, put the product in CO 2 In a supercritical high-pressure extraction device, CO 2 The medium is subjected to supercritical drying at a temperature of 44°C and an air pressure of 9 MPa for 3 hours, that is, functionalized silica airgel;

[0038] (2) Add 7g of the functionalized silica airgel obtained in step (1) to 100g of methyl methacrylate, then perform ultrasonic dispe...

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Abstract

The invention discloses a highly-impact-resistant highly-light-transmitting highly-heat-insulating polymethylmethacrylate composite material and a preparation method thereof. Silicon dioxide aerogel serving as a super heat-insulation material is adopted to be subjected to surface chemical state regulation and is composited with a PMMA (polymethylmethacrylate) bulk polymerization system to prepare the composite material, and the prepared polymethylmethacrylate composite material with the silicon dioxide aerogel being functionalized is highly resistant to impact, high in heat insulation and light transmission and the like. The highly-impact-resistant highly-light-transmitting highly-heat-insulating polymethylmethacrylate composite material and the preparation method thereof have the advantages that since the silicon dioxide aerogel serves as a PMMA functionalized phase, impact strength, heat insulation performance and visible light transmittance of PMMA can be enhanced, and conditions are created for popularizing the PMMA to the field of heat insulation of transparent building envelopes.

Description

technical field [0001] The invention belongs to the field of building thermal insulation materials, and more specifically relates to a polymethyl methacrylate composite material with high impact resistance, high light transmission and high heat insulation and a preparation method thereof. Background technique [0002] The heat loss of the transparent envelope accounts for a large proportion of the building's energy consumption, largely due to the low thermal insulation of the glass elements of the building. Especially at the moment when environmental and energy problems are becoming more and more serious, improving the thermal insulation level of building transparent envelopes and striving to promote building energy conservation have profound implications for improving building thermal environment, reducing environmental pollution, and protecting earth resources and ecological environment. significance. In fact, people have long realized the problem of large heat dissipatio...

Claims

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Application Information

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IPC IPC(8): C08F292/00C08F220/14
Inventor 李洪彦刘洪丽李婧李亚静张涛王明明程林
Owner TIANJIN CHENGJIAN UNIV
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