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Comb-shaped high-strength polyester and preparation method thereof

A high-strength, polyester technology, applied in the field of comb-shaped high-strength polyester and its preparation, can solve the problems of inability to large-scale industrialization, strict condition control requirements, complicated synthesis steps, etc., and achieve good optical transparency and rheological properties. , maintain the elongation at break, the effect of simple steps

Inactive Publication Date: 2020-11-24
扬州帅帅高分子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, the synthesis of polyester materials with special structures, such as copolyesters with comb structure, star structure, and dendritic structure, cannot be industrialized on a large scale. The synthesis steps are cumbersome and the conditions are strictly controlled. The product has a low viscosity and cannot be used directly.

Method used

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  • Comb-shaped high-strength polyester and preparation method thereof
  • Comb-shaped high-strength polyester and preparation method thereof
  • Comb-shaped high-strength polyester and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The comb-shaped high-strength polyester in this example is synthesized from the following raw materials in mass ratio: dimethyl terephthalate 2000g, ethylene glycol 1500g, 1,2-hexanediol 200g, zinc acetate 0.8g, ethylene glycol 1 g of antimony alcohol, 1 g of trimethyl phosphate, 2 g of antioxidant 1010 (tetra[β-propionic acid] pentaerythritol ester).

[0025] The preparation process of the comb-shaped high-strength polyester in the present embodiment is as follows:

[0026] Dimethyl terephthalate, ethylene glycol, 1,2-hexanediol, zinc acetate, ethylene glycol antimony, trimethyl phosphate and antioxidant 1010 were weighed and mixed evenly, and added to 5L reaction In the kettle, stir for 10 minutes under the preheating condition of 80°C, then replace the air in the kettle, and repeat the vacuum pumping and nitrogen gas three times. Raise the temperature of the jacket of the reaction kettle to 230°C, and maintain the pressure inside the kettle at about 200kPa. Judge th...

Embodiment 2

[0030] The comb-shaped high-strength polyester in this example is synthesized from the following mass ratio raw materials: dimethyl terephthalate 2500g, propylene glycol 1800g, 1,2-decanediol 250g, calcium acetate 1.0g, ethylene glycol antimony 1.2 g, 1.2 g of triphenyl phosphite, 2.5 g of antioxidant 1010 (tetrakis [β-propionic acid] pentaerythritol ester).

[0031] The preparation process of the comb-shaped high-strength polyester in the present embodiment is as follows:

[0032] Weigh dimethyl terephthalate, propylene glycol, 1,2-decanediol, calcium acetate, ethylene glycol antimony, triphenyl phosphite and antioxidant 1010 and mix them evenly, and add them to a 5L reactor , stirred at 80°C for 10 minutes under preheating conditions, then replaced the air in the kettle, and repeated vacuum pumping and nitrogen gas 3 times. Raise the temperature of the jacket of the reaction kettle to 240°C, and maintain the pressure inside the kettle at about 200kPa. The degree of the tran...

Embodiment 3

[0036] The comb-shaped high-strength polyester in this example is synthesized from the following raw materials in mass ratio: 2,000 g of dimethyl isophthalate, 1,500 g of neopentyl glycol, 400 g of 1,2-decanediol, and 0.7 g of p-toluenesulfonic acid , antimony ethylene glycol 1.5g, trimethyl phosphate 1g, antioxidant 1010 (tetra[β-propionate] pentaerythritol ester) 2g.

[0037] The preparation process of the comb-shaped high-strength polyester in the present embodiment is as follows:

[0038] Dimethyl isophthalate, neopentyl glycol, 1,2-decanediol, p-toluenesulfonic acid, ethylene glycol antimony, trimethyl phosphate and antioxidant 1010 were weighed and mixed evenly, and added Put it into a 5L reaction kettle, stir for 10 minutes under the preheating condition of 80°C, then replace the air in the kettle, and repeat the vacuum pumping and nitrogen gas three times. Raise the temperature of the jacket of the reaction kettle to 245°C, and maintain the pressure inside the kettle ...

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Abstract

The invention discloses comb-shaped high-strength polyester. The comb-shaped high-strength polyester is prepared from the following raw materials in parts by mass: 2000-3000 parts of dimethyl diformate monomers, 1200-1800 parts of dihydric alcohol monomers, 200-500 parts of dihydric alcohol containing a side chain, 0.5-1 part of a catalyst 1, 0.8-1.5 parts of a catalyst 2, 1-2 parts of a stabilizer and 1-4 parts of an antioxidant. The comb-shaped high-strength polyester has extremely high tensile strength and toughness, the service life of a product can be prolonged, and meanwhile, the elongation at break and the optical transparency are kept; matrix resin prepared from the comb-shaped high-strength polyester can be directly used for stretching type film making, injection type part makingand fiber spinning; and the comb-shaped high-strength polyester is an ideal high polymer material used in the high-tech field.

Description

technical field [0001] The invention relates to the field of polyester molecular design and synthesis, in particular to a comb-shaped high-strength polyester and a preparation method thereof. Background technique [0002] The tensile strength of polyester PET is about 50MPa. At present, the common reinforcement method is to blend glass fiber, carbon fiber, plant fiber, etc., but this method has many disadvantages, such as a sharp increase in the viscosity of the melt system, co- The mixed material has high brittleness, low toughness, complete opacity, large machine wear and high processing cost. Therefore, it is necessary to find a new method of polyester reinforcement that maintains the toughness and transparency of the material. [0003] In addition, the synthesis of polyester materials with special structures, such as copolyesters with comb structure, star structure, and dendritic structure, cannot be industrialized on a large scale. The synthesis steps are cumbersome an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08G63/199C08G63/189C08G63/181C08G63/78
CPCC08G63/183C08G63/199C08G63/189C08G63/181C08G63/78
Inventor 白永平孙帅孟令辉殷晓芬李卫东
Owner 扬州帅帅高分子科技有限公司
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