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A kind of rapid crystallization polyester and preparation method thereof

A crystalline polyester, fast technology, applied in the field of polyester with a fast crystallization rate and its preparation, can solve the problems of polyester degradation, lower polyester polymerization rate, polyester intrinsic viscosity difficult to meet the use requirements, etc., to achieve a large specific surface area , the effect of high surface energy

Active Publication Date: 2015-11-18
CHINA RESOURCES PACKAGING MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above three methods all have their disadvantages: Method 1 is difficult for the nucleating agent and crystallization accelerator to disperse evenly in the matrix resin, and it will cause polyester degradation during the blending process, which will affect the mechanical properties of the material; Method 2 The process control requirements for polyester polymerization process are high, and the physical and chemical properties of the material will be changed after the modifying group is connected to the macromolecular chain, and the application range of the material will be limited; the additive in method 3 will reduce the polymerization rate of polyester, and the obtained The intrinsic viscosity of polyester is generally difficult to meet the requirements of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Example 1. Mix 1g of methacryloxypropyltrimethoxysilane with 11.5g of ethylene glycol, add 100g of nano-zirconium boride into a high-speed mixer, stir at high speed for 10 minutes, and then mix the above-mentioned mixed solution After heating to 60°C, add it into the high-speed mixer in the form of spray, and the whole adding process takes 1.5 hours to obtain surface-treated nano-zirconium boride;

[0017] Prepare 8.5KG of purified terephthalic acid, 3.8L of ethylene glycol, 5.6g of catalyst antimony acetate, and 0.4g of heat stabilizer polyphosphoric acid to form a slurry, then carry out esterification reaction at a temperature of 270°C and a pressure of 2MPa. The time is 2.5 hours; after the esterification reaction, add the above-mentioned surface-treated nano-zirconium boride to the esterified product, stir at normal pressure for 10 minutes, and carry out polycondensation reaction at a temperature of 280°C and a pressure of 20-40Pa. The time is 3 hours; after the pol...

example 2

[0018] Example 2. Mix 2.5g of methacryloxypropyltrimethoxysilane with 35g of ethylene glycol, add 300g of nano-zirconium boride into a high-speed mixer, stir at a high speed for 10 minutes, and then heat the above-mentioned mixed solution to 60 After ℃, add it into the high-speed mixer in the form of spray, and the whole adding process takes 2 hours to get the surface-treated nano zirconium boride;

[0019] 8.3KG of purified terephthalic acid, 3.7L of ethylene glycol, 5.6g of catalyst antimony acetate, and 0.4g of heat stabilizer polyphosphoric acid were prepared into a slurry, and then the esterification reaction was carried out at a temperature of 270°C and a pressure of 2MPa. The time is 2.5 hours; after the esterification reaction, add the above-mentioned surface-treated nano-zirconium boride to the esterified product, stir at normal pressure for 10 minutes, and carry out polycondensation reaction at a temperature of 280°C and a pressure of 20-40Pa. The time is 3 hours; a...

example 3

[0020] Example 3: Mix 5g of methacryloxypropyltrimethoxysilane with 57.5g of ethylene glycol, add 500g of nano-zirconium boride into a high-speed mixer, stir at high speed for 10 minutes, and then mix the above-mentioned mixed solution After heating to 60°C, add it into the high-speed mixer in the form of spray, and the whole adding process takes 2.5 hours to obtain surface-treated nano-zirconium boride;

[0021] Prepare 8.1KG of purified terephthalic acid, 3.7L of ethylene glycol, 5.6g of catalyst antimony acetate, and 0.4g of heat stabilizer polyphosphoric acid to form a slurry, then carry out esterification reaction at a temperature of 270°C and a pressure of 2MPa. The time is 2.5 hours; after the esterification reaction, add the above-mentioned surface-treated nano-zirconium boride to the esterified product, stir at normal pressure for 10 minutes, and carry out polycondensation reaction at a temperature of 280°C and a pressure of 20-40Pa. The time is 3 hours; after the pol...

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Abstract

The invention relates to fast crystallized polyester which is characterized by containing nano zirconium boride with particle sizes ranging from 100 nm to 300 nm, wherein the weight content of the nano zirconium boride in the polyester accounts for 1%-5%. The fast crystallized polyester and the preparation method thereof have the advantages that the crystallization rate is high, the production and preparation process is not complicated, and superior physicochemical performance of the polyester can be maintained simultaneously.

Description

technical field [0001] The invention relates to a polyester with a fast crystallization rate; in particular, it relates to a polyester with a fast crystallization rate containing nano zirconium boride and a preparation method thereof. Background technique [0002] Polyester has been widely used in fibers, films, film bases and polyester bottles due to its excellent mechanical properties, wear resistance, creep resistance, high hardness, good rigidity, low water absorption and good dimensional stability. field, but its application as engineering plastics is still very limited, mainly due to the slow crystallization rate of polyester and the long molding cycle. In addition, the crystallization temperature of polyester is high, and its injection mold temperature reaches 150-180 ° C, so it is economical. Poor sex. The crystallization rate is slow at the usual molding processing temperature, and the half-crystallization period reaches 62 seconds at 160°C, which hinders its appli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/183C08G63/86C08K9/06C08K9/04C08K3/38
Inventor 朱振达宗建平陈旭陈小雷徐梅
Owner CHINA RESOURCES PACKAGING MATERIALS CO LTD
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