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Bio-based unsaturated polyester cured product and preparation method thereof

An unsaturated, bio-based technology, applied in the preparation of carboxylic acid esters, chemical instruments and methods, and the preparation of organic compounds, can solve the problems of molecular chain flexibility and high-performance polymer materials, and achieve easy reaction conditions and overcome flexibility Effects that are too large and source renewable

Active Publication Date: 2013-03-20
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a kind of bio-based unsaturated polyester cured product, which is formed by polymerization of propylene pimarate dipropylene and epoxy soybean oil acrylate, and fully utilizes the relatively strong phenanthrene ring structure in propylene pimarate dipropylene The advantage of strong mechanical rigidity overcomes the shortcomings of the molecular chain flexibility of epoxy soybean oil acrylate, which makes it difficult to directly obtain high-performance polymer materials, and prepares a bio-based unsaturated compound with better performance and higher bio-based content. Polyester cured product

Method used

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  • Bio-based unsaturated polyester cured product and preparation method thereof
  • Bio-based unsaturated polyester cured product and preparation method thereof
  • Bio-based unsaturated polyester cured product and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1 (Synthesis of propylene pimaric acid dipropylene)

[0047] 1) 60g of industrial rosin (Chengdu Grecia Chemical Technology Co., Ltd., purity>99%) is ground and passed through a 50-mesh sieve to obtain a powder, 30g of acrylic acid and 2g of hydroquinone are added as polymerization inhibitors, under the protection of nitrogen, The reaction was stirred at 160°C for 12 hours. After the reaction, the temperature was lowered to 25°C, and 100 mL of ether was added and dissolved in an ultrasonic instrument. Then add 400mL petroleum ether, filter to obtain white precipitate, rinse with petroleum ether and deionized water several times, and finally vacuum dry to obtain 42g white solid product (namely propylene pimaric acid);

[0048] 2) Add 96g of bromopropylene, 56g of potassium carbonate and 100mL of acetone to the 37.4 white solid product, and react with magnetic stirring at 70°C for 24 hours. The resulting product is washed with water, separated, and the organic phase is...

Embodiment 2

[0052] Example 2 (Synthesis of propylene pimaric acid dipropylene)

[0053] 1) 60g of industrial rosin (Chengdu Grecia Chemical Technology Co., Ltd., purity>99%) was ground and sieved to 50 mesh to obtain powder, 15g of acrylic acid and 0.3g of hydroquinone were added as polymerization inhibitors, under nitrogen protection , The reaction was stirred at 180°C for 12 hours. After the reaction, the temperature was lowered to 20°C, and 100 mL of ether was added and dissolved in an ultrasonic instrument. Then add 400 mL petroleum ether, filter to obtain a white precipitate, rinse with petroleum ether and deionized water several times, and finally vacuum dry to obtain 43 g of white solid product (ie, propylene pimaric acid).

[0054] 2) Add 48g of bromopropylene, 28g of potassium carbonate and 100mL of acetone solvent to 37.4g of white solid product, and react with magnetic stirring at 70°C for 6 hours. The resulting product is washed with water, separated into liquids, and the organic p...

Embodiment 3

[0056] Example 3 (Synthesis of propylene pimaric acid dipropylene)

[0057] 1) Grind 1kg of industrial rosin (Chengdu Grecia Chemical Technology Co., Ltd., purity>99%) and pass through a 50-mesh sieve to obtain powder, add 300g acrylic acid and 20g hydroquinone as polymerization inhibitors, under nitrogen protection, The reaction was stirred at 140°C for 2 hours, and then heated to 180°C for 12 hours. After the reaction, the temperature was lowered to 30°C, and 1L of ether was added and dissolved under shaking. Then add 3.5L of excess petroleum ether, filter to obtain a white precipitate, rinse with petroleum ether and deionized water several times, and finally vacuum dry to obtain 650 g of white solid product (ie, propylene pimaric acid).

[0058] 2) Then add 1.5kg of bromopropene and 1L of acetone solvent to 600g of white solid product, add dropwise a concentrated sodium hydroxide aqueous solution (10mol / L) containing 500g of sodium hydroxide at 60°C, and react for 24 hours unde...

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Abstract

The present invention discloses a bio-based unsaturated polyester cured product, which is prepared from the raw materials including by weight: 40-94% of epoxidized soybean oil acrylate, 4-59.5% of acrylpimaric dipropylene ester, and 0.5-2% of an initiator. The advantage that the hydrogen phenanthrene ring structure in acrylpimaric dipropylene ester has strong mechanical rigidity is fully played. The shortcomings that the epoxidized soybean oil acrylate molecular chain is too flexible and difficult to get high-performance polymer directly are overcome. The bio-based unsaturated polyester cured product with excellent performance and high bio-based components is prepared. The present invention also discloses a preparation method of the bio-based unsaturated polyester cured product. The method includes mixing the epoxidized soybean oil acrylate, the acrylpimaric dipropylene ester and the initiator, and removing into a mold. The bio-based unsaturated polyester cured product is obtained after copolymerization curing at 80-200 DEG C. The preparation conditions are easy to implement and control, and easy for mass industrial production.

Description

Technical field [0001] The invention belongs to the field of polymer materials, and particularly relates to a bio-based unsaturated polyester cured product and a preparation method thereof. Background technique [0002] Bio-based polymer materials mainly use some natural renewable resources such as starch, protein, cellulose, chitin, vegetable oil, etc. as starting materials, focusing on the biological source and renewability of the raw materials. This type of bio-based polymer material uses renewable resources as the main raw material. While reducing the consumption of petrochemical products in the plastics industry, it also reduces the environmental pollution of petroleum-based raw materials during the production process. It has the advantages of saving petroleum resources and protecting the environment. The dual function is an important development direction of current polymer materials, and it is also one of the important means to realize "energy saving and emission reduction...

Claims

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Application Information

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IPC IPC(8): C08F222/14C08F222/26C08F4/34C07C67/10C07C69/753
Inventor 刘小青马强强朱锦
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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