A flame-retardant and toughened bifunctional ionomer additive and its preparation method and application

An ionomer and dual-function technology, which is applied in the field of polymer compound preparation, can solve the problem that it is difficult to effectively improve the flame retardancy and toughening effect of polylactic acid at the same time, and achieve the effect of improving flame retardancy, low investment, and simple operation

Active Publication Date: 2022-03-18
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention intends to provide a flame retardant and toughening dual-functional ionomer auxiliary agent and its preparation method and application to solve the difficulty in the prior art that it is difficult to achieve the flame retardant and toughening effects of polylactic acid simultaneously and effectively by adding only one auxiliary agent. raised questions

Method used

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  • A flame-retardant and toughened bifunctional ionomer additive and its preparation method and application
  • A flame-retardant and toughened bifunctional ionomer additive and its preparation method and application
  • A flame-retardant and toughened bifunctional ionomer additive and its preparation method and application

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Embodiment 1

[0039] This embodiment is used to illustrate the preparation method of flame-retardant and toughened bifunctional ionomer additives in the present invention:

[0040] Put about 2000g / mol of hydroxyl-terminated polydecanediol malonate and N-methyldiethanolamine in the reaction device at a mass ratio of 9:1, stir and heat up to its complete melting under the protection of nitrogen, and then add bicyclic Hexylmethane diisocyanate, and the amount of dicyclohexylmethane diisocyanate added is 0.9 times the total hydroxyl molar ratio of hydroxyl-terminated polydecanediol malonate and N-methyldiethanolamine, reacted at 150°C for 0.5 hours to obtain chain extension product. Subsequently, after cooling down to room temperature, dichloromethane was added to the reaction device to dissolve the chain extension product, and then phenylphosphonic acid in an equimolar ratio to N-methyldiethanolamine was added, and an acid-base reaction was carried out at 20°C for 0.5h to obtain the isolated ...

Embodiment 2

[0042] This embodiment is used to illustrate the preparation method of flame-retardant and toughened bifunctional ionomer additives in the present invention:

[0043] Put about 4000g / mol hydroxyl-terminated polybutylene sebacate and N-butyldiethanolamine in the reaction device at a mass ratio of 5:5, stir and heat up to its complete melting under nitrogen protection, then add 1,6-hexamethylene diisocyanate, and the amount of 1,6-hexamethylene diisocyanate added is 1 times the total hydroxyl molar ratio of hydroxyl-terminated polybutylene sebacate and N-butyldiethanolamine , and reacted at 80°C for 1 hour to obtain chain extension products. Subsequently, after cooling down to room temperature, chloroform was added to the reaction device to dissolve the chain extension product, and then phenylphosphinic acid in an equimolar ratio to N-butyldiethanolamine was added, and an acid-base reaction was carried out at 20°C for 5 hours to obtain an ionomer Auxiliary agent, the yield is 9...

Embodiment 3

[0045]This embodiment is used to illustrate the preparation method of flame-retardant and toughened bifunctional ionomer additives in the present invention:

[0046] Put about 6000g / mol hydroxyl-terminated poly(trimethylene sebacate) and N-hexadecyldiethanolamine in the reaction device at a mass ratio of 9:1, stir and heat up to its complete melting under the protection of nitrogen, then add Diphenylmethane diisocyanate, and the addition amount of diphenylmethane diisocyanate is 1 time of the total hydroxyl molar ratio of hydroxyl-terminated polypropylene sebacate and N-hexadecyldiethanolamine, reacted at 160 ° C for 3 hours, and obtained expanded chain product. Then, cool down to room temperature, add dimethyl sulfoxide to the reaction device to dissolve the chain extension product, then add diphenylphosphinic acid in an equimolar ratio to N-hexadecyldiethanolamine, and carry out acid-base reaction at 40°C for 24h , the ionomer additive was obtained with a yield of 96% and a...

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Abstract

The invention relates to the field of polymer compound preparation, and discloses a flame-retardant and toughening dual-functional ionomer additive and its preparation method and application. The flame-retardant and toughening dual-functional ionomer additive is a prepolymer with dual After the tertiary amine with hydroxyl group is melted and stirred, diisocyanate is added, and the chain extension product is obtained after melting reaction, or the prepolymer, tertiary amine with double hydroxyl group and diisocyanate are mixed, and then extruded after reaction in the extruder The chain-extended product is obtained, and then the chain-extended product is dissolved in an organic solvent, and organic phosphoric acid is added for reaction. When the ionomer additive is used in the modification of polylactic acid, it can not only improve the toughness and flame retardancy of polylactic acid, but also improve its hydrophilicity, which is beneficial to the degradation and recovery of polylactic acid products. Moreover, in the present invention, by adjusting the ratio between the prepolymer and the tertiary amine, it is possible to obtain flame-retardant and plasticized bifunctional ionomer additives with different requirements for use, thereby obtaining modified polymers with different requirements for use. Lactic acid products.

Description

technical field [0001] The invention relates to the field of polymer compound preparation, in particular to a flame-retardant and toughening bifunctional ionomer additive, a preparation method and application thereof. Background technique [0002] In today's increasingly serious energy and environmental crisis, the research and development of bio-based and biodegradable polymer materials has important strategic significance for energy conservation, environmental protection and sustainable development. Polylactic acid (PLA) is a biodegradable polymer material with excellent physical properties and processing properties. It is widely used in packaging materials, agricultural films, biomedical materials and other fields. However, the limiting oxygen index (LOI) of polylactic acid is only 19vol%, which is not only flammable but also has serious droplet phenomenon; at the same time, compared with other traditional polyolefins, polylactic acid is very brittle, and the elongation a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/83C08G18/66C08G18/42C08G18/32C08L67/04C08L75/06
CPCC08G18/836C08G18/6655C08G18/4238C08G18/3275C08G18/4277C08G18/4272C08L67/04C08L2201/02C08L75/06
Inventor 吴芳朱江田国强晋芹
Owner CHONGQING UNIV OF ARTS & SCI
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