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Preparation method of epoxidized soybean oil modified PMMA (polymethylmethacrylate)

A technology of polymethyl methacrylate and epoxidized soybean oil, applied in the field of polymer materials, can solve the problems of difficult industrialization, insufficient material toughness, complicated preparation methods, etc., and achieves improved impact strength, maintained transparency and heat resistance. performance effect

Active Publication Date: 2016-06-15
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] These methods can modify PMMA and improve the thermal and mechanical properties of PMMA, but the toughness of the obtained material is still insufficient, and its preparation method is complicated, the control is difficult, the raw materials required for preparation are expensive, and it is not easy to realize industrialization. change

Method used

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  • Preparation method of epoxidized soybean oil modified PMMA (polymethylmethacrylate)
  • Preparation method of epoxidized soybean oil modified PMMA (polymethylmethacrylate)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A. Preparation of Epoxy Soybean Oil Acrylate

[0026] (1), first add 100g epoxy soybean oil and 0.1050g polymerization inhibitor nitroxide free radical piperidinol in the 250 milliliter three-neck round-bottomed flask equipped with strong stirrer and thermometer, be heated to 80 ℃ and drop 5.1654g formazan Based on the mixture of acrylic acid and 0.1050g catalyst triethylamine, the rate of addition is controlled, and the addition is constant.

[0027] (2), after 30 minutes of dropwise addition, the temperature rose to 100° C., and after the esterification rate reached 90%, the reaction was stopped.

[0028] (3), after the reaction finishes, the product is passed through the column with basic alumina, and the underpressure distillation removes the polymerization inhibitor therein to obtain light yellow transparent oily thing epoxy soybean oil acrylate.

[0029] B. Polymerization of epoxy soybean oil acrylate and methyl methacrylate

[0030] (1), add 95g of toluene as s...

Embodiment 2

[0034] A. Preparation of Epoxy Soybean Oil Acrylate

[0035] (1), first add 100g epoxy soybean oil and 0.3207g polymerization inhibitor p-tert-butylcatechol to a 250ml three-necked round-bottomed flask equipped with a strong stirrer and a thermometer, heat to 85°C and add 6.8872g methyl The mixture of acrylic acid and 0.4276g catalyst tetrabutylammonium bromide, the rate of addition is controlled, and is added dropwise constantly.

[0036] (2), after 30 minutes of dropwise addition, the temperature rose to 105° C., and after the esterification rate reached 90%, the reaction was stopped.

[0037] (3), after the reaction finishes, the product is passed through the column with basic alumina, and the underpressure distillation removes the polymerization inhibitor therein to obtain light yellow transparent oily thing epoxy soybean oil acrylate.

[0038] B. Polymerization of epoxy soybean oil acrylate and methyl methacrylate

[0039] (1), add 95g of acetone as solvent in a 500ml f...

Embodiment 3

[0043] A. Preparation of Epoxy Soybean Oil Acrylate

[0044] (1), first add 100g epoxy soybean oil and 0.5350g polymerization inhibitor hydroquinone to a 250ml three-neck round bottom flask equipped with a strong stirrer and a thermometer, and add 7.2060g acrylic acid and 0.6430g dropwise when heated to 90°C The mixture of catalyst triphenylphosphine, control the rate of addition, constant drop.

[0045] (2) After 30 minutes of dropwise addition, the temperature rose to 110° C., and after the esterification rate reached 90%, the reaction was stopped.

[0046] (3), after the reaction finishes, the product is passed through the column with basic alumina, and the underpressure distillation removes the polymerization inhibitor therein to obtain light yellow transparent oily thing epoxy soybean oil acrylate.

[0047] B. Polymerization of epoxy soybean oil acrylate and methyl methacrylate

[0048] (1), add 95g of ethyl acetate as a solvent in a 500ml four-neck round bottom flask e...

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Abstract

The invention relates to a preparation method of epoxidized soybean oil modified PMMA (polymethylmethacrylate). Epoxidized soybean oil acrylate is firstly synthesized, then, epoxidized soybean oil acrylate and methyl methacrylate are polymerized, and modified methyl methacrylate is obtained. The preparation method has the benefits as follows: (methyl) acrylate epoxidized soybean oil serving as a modified comonomer can remarkably improve the impact strength of organic glass under the condition that little (methyl) acrylate epoxidized soybean oil is used, and the transparency and the heat resistance of PMMA are kept.

Description

technical field [0001] The invention belongs to the field of polymer materials and relates to a preparation method of epoxy soybean oil modified polymethyl methacrylate. Background technique [0002] Polymethyl methacrylate (PMMA), also known as plexiglass, has good transparency, chemical stability and weather resistance, and PMMA has low density, good processing adaptability, and is easy to make transparent in various shapes and colors. Products, therefore, are widely used in various lamps, optical glass, aviation, electronic appliances and other fields. However, PMMA has poor toughness and low impact strength, which limits its application in many aspects. Therefore, it is particularly important to modify PMMA. [0003] In recent years, there are many researches on the modification of PMMA, such as: CN1113936C discloses modified organic glass: by adding plasticizer, accelerator and initiating the polymerization of methyl methacrylate and styrene, unsaturated polyester resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F289/00C08F220/14
CPCC08F289/00C08F220/14
Inventor 李坚唐宝坤任强汪称意
Owner CHANGZHOU UNIV
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