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Insect-resistant polymethyl methacrylate and preparation method thereof

A technology of polymethyl methacrylate and methyl methacrylate, which is applied in the field of insect-proof polymethyl methacrylate and its preparation, can solve the problems of poor scratch resistance, low application value, and small application range, etc. Achieve the effect of simple process, good quality and good economic value

Inactive Publication Date: 2020-11-17
SICHUAN MONARCH SANITARY WARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The insect repellant involved in this patent was developed by Sumitomo Chemical Company of Japan. The 1-methyl-nitro-[(3-tetrahydrofuryl) methyl]guanidine is a non-volatile insect repellent, although its stability is stronger than that of The above-mentioned patent, but its effect is far less than the insect repellent with a certain volatility, that is to say, the patent only chooses to sacrifice a certain insect-proof performance in terms of safety, environmental protection and insect-proof performance to improve safety and environmental protection, but does not improve it at the same time. Therefore, the The patent only provides an insect-repellent resin composition with a small application range, and its practical application value is not high
[0006] Polymethyl methacrylate is a polymer material with a wide range of applications. It has excellent weather resistance and impact resistance, but its scratch resistance is poor, which means that it is necessary to prevent external insect activities from defacing its surface and reduce maintenance. work, prolonging its light transmission and aesthetics
However, there is no technically mature and effective polymethyl methacrylate insect repellent material on the market.

Method used

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  • Insect-resistant polymethyl methacrylate and preparation method thereof
  • Insect-resistant polymethyl methacrylate and preparation method thereof
  • Insect-resistant polymethyl methacrylate and preparation method thereof

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preparation example Construction

[0024] Concrete, the preparation method of insect-proof polymethyl methacrylate material described in the application comprises the following steps:

[0025] 1) Mix 9-11 parts of methyl methacrylate and 0.005-0.015 parts of initiator uniformly at a temperature not exceeding 40°C, and after fully dissolving, add them to the reaction kettle and heat the reaction to obtain a reaction liquid; wherein, the reaction temperature is set to 85°C-95°C, the sign of the end of the reaction is: when the viscosity of the reaction liquid at 25°C is greater than or equal to 1000Pa·S, stop heating and allow the reaction liquid to cool naturally. This step is a pre-polymerization process used to control the polymerization process of polymethyl methacrylate. During the reaction, in order to better control the degree of polymerization, we should pay close attention to its viscosity change after the reaction is carried out for 5-10 minutes, so as to Appropriate frequency to test its viscosity at 2...

Embodiment 1

[0034] The application provides an insect-proof polymethyl methacrylate and a preparation method thereof, the preparation method comprising the steps of:

[0035] 1) Mix 9-11 parts of methyl methacrylate and 0.005-0.015 parts of azobisisobutyronitrile initiator uniformly at a temperature not exceeding 40°C, fully dissolve them, put them into a reaction kettle and heat to react to obtain a reaction liquid; Among them, the reaction temperature is set at 90°C. After reaching the preset temperature and reacting for 5 minutes, take the reaction liquid every 5 minutes and keep the temperature at 25°C, and use a viscometer to test its viscosity. When the viscosity of the reaction liquid is greater than or equal to When the temperature is 1000Pa·S, stop heating and let the reaction liquid cool down naturally;

[0036] 2) Add 66-88 parts of methyl methacrylate, 0.02-0.24 parts of azobisisobutyronitrile initiator, 2 parts of divinylbenzene, and 2-5 parts of insect repellent to the react...

Embodiment 2

[0055] The application provides an insect-proof polymethyl methacrylate and a preparation method thereof, the preparation method comprising the steps of:

[0056] 1) Mix 9-11 parts of methyl methacrylate and 0.005-0.015 parts of azobisisobutyronitrile initiator uniformly at a temperature not exceeding 40°C, fully dissolve them, put them into a reaction kettle and heat to react to obtain a reaction liquid; Among them, the reaction temperature is set at 85°C. After reaching the preset temperature and reacting for 5 minutes, take the reaction solution every 5 minutes and keep the temperature at 25°C, and use a viscometer to test its viscosity. When the viscosity of the reaction solution is greater than or equal to When the temperature is 1000Pa·S, stop heating and let the reaction liquid cool down naturally;

[0057] 2) Add 66-88 parts of methyl methacrylate, 0.02-0.24 parts of azobisisobutyronitrile initiator, 2 parts of divinylbenzene, and 2-5 parts of insect repellent to the r...

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Abstract

The invention relates to the technical field of polymer modification, particularly to insect-proof polymethyl methacrylate and a preparation method thereof. The insect-resistant polymethyl methacrylate is prepared from natural plant extraction essential oil as an insect-resistant agent through specific components and processes. The insect-proof polymethyl methacrylate has mechanical properties andlight transmittance similar to those of a conventional polymethyl methacrylate material, and has a good insect expelling effect, so that the use feeling can be improved, and the cleaning of the surface of the material can be reduced. Furthermore, although the natural plant extracted essential oil insect-resist agent is high in volatility, the natural plant extracted essential oil insect-resist agent is harmless to a human body and can play a role in refreshing. According to the invention, the insect-proof polymethyl methacrylate is excellent in performance, non-toxic, harmless and good in quality, and the preparation method of the insect-proof polymethyl methacrylate material is relatively simple in process and can be used for production by adopting conventional equipment, so that the insect-proof polymethyl methacrylate material has a very good economic value.

Description

technical field [0001] The application relates to the technical field of polymer modification, in particular to an insect-proof polymethyl methacrylate and a preparation method thereof. Background technique [0002] Polymethyl methacrylate (PMMA), known as plexiglass or acrylic material, is an organic polymer with good light transmittance, weather resistance, electrical insulation and processing properties. Because polymethyl methacrylate has good thermoplasticity and is easy to process, it is widely used in sanitary ware, soundproof doors and windows, lighting bodies, light boxes, signs, vehicle doors and windows and other fields, and has broad market prospects. In the United States, Japan and other developed countries, there are even mandatory regulations in the law that polymethyl methacrylate sheets must be used as glass substitutes for ordinary glass in primary and secondary schools and kindergartens. [0003] Since polymethyl methacrylate is often used in sanitary war...

Claims

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Application Information

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IPC IPC(8): C08L33/12C08L91/00C08F220/14C08F212/36C08F2/44
CPCC08L33/12C08F220/14C08F2/44C08L91/00C08F212/36
Inventor 陈伟吴志雄陈安
Owner SICHUAN MONARCH SANITARY WARE
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