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Method for preparing polyester/SiO2 nano composite material

A nano-composite material and polyester technology, which is applied in the field of polymer-based nano-composite materials, can solve the problems of complex production process and limited application, and achieve the effect of simplifying the reaction process and saving the preparation time.

Inactive Publication Date: 2007-11-28
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this method is that one or several special coupling agents need to be used before the preparation of nano-SiO 2 Surface modification and dispersion, which complicate the production process and limit the application of this method

Method used

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  • Method for preparing polyester/SiO2 nano composite material
  • Method for preparing polyester/SiO2 nano composite material

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Experimental program
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Effect test

Embodiment 1

[0016] Sol-gel process: In the polymerization reactor, add 393 grams of terephthalic acid, 263 grams of ethylene glycol, 0.14 grams of antimony trioxide, and perform esterification reaction at 220-240 ° C, 4-5 atm for 3-6 hours, During this process, 16 grams of tetraethyl orthosilicate was gradually added dropwise; the temperature was raised to 240-280 ° C, and the vacuum was gradually reduced to below 80 Pa, and the polycondensation reaction was carried out for 1.0-3 hours to obtain SiO as shown in Figure 1. 2 1% PET / SiO 2 nanocomposites.

Embodiment 2

[0018] Sol-gel process: In a polymerization reactor, add 393 grams of terephthalic acid, 440 grams of ethylene glycol, 0.14 grams of antimony trioxide, and esterify at 220-240 ° C, 4-5 atm for 3-6 hours to obtain For BHET containing ethylene glycol, cool to 130-155°C, deflate until the air pressure is zero, add 16 grams of tetraethyl orthosilicate, 6.5 grams of deionized water, react for 0.5-1.5 hours, gradually distill out the ethanol and Excess water; heat up to 240-280°C, and gradually evacuate to below 80Pa, carry out polycondensation reaction for 1.0-3hr, and obtain SiO as shown in Figure 2 2 1% PET / SiO 2 nanocomposites.

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Abstract

The present invention provides sol-gel process for producing nanometer composite polyester / SiO2 material, and features that inorganic component precursor ethyl silicate is added into the esterification reaction system of aromatic binary carboxylic acid or its ester and glycol before the polycondensation reaction to prepare the nanometer composite polyester / SiO2 material.

Description

technical field [0001] The present invention relates to the field of polymer-based nanocomposites, more specifically polyester / SiO 2 Preparation methods of nanocomposites. Background technique [0002] Polyester is a polymer with excellent comprehensive properties, widely used in textile fibers, packaging materials and engineering plastics. However, it also has disadvantages such as easy combustion, low thermal denaturation temperature, low crystallization rate, and easy pilling when used as a fiber, which limits its wider application. Inorganic materials have excellent heat resistance and flame retardancy, high strength, and high rigidity, while inorganic nanoparticles have nanoscale effects, large specific surface areas, volume effects, and strong interfacial interactions with polymer matrices. If polymers and inorganic nanomaterials are composited at the nanometer scale, the advantages of the two materials can be combined. [0003] In Chinese patent application 2004100...

Claims

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Application Information

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IPC IPC(8): C08L67/03C08K3/36C08G63/181C08G63/78
Inventor 夏延致纪全王孝龙孔庆山
Owner QINGDAO UNIV