对苯二甲酸回收料改性松香聚酯多元醇的研究

›› 2010, Vol. 44 ›› Issue (1): 5-8.

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Study on Rosin Polyester Polyol Modified by Recycled Terephthalic Acid

CHANG Xia¹, XU Bin¹, NIE Xiao-an¹, DAI Wei-di¹, XU Jun²

1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. on Forest Chemical Engineering SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;2. Collage of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China

Received:2009-07-13 Revised:1900-01-01 Online:2010-01-30 Published:2010-01-30

Abstract

Abstract: The synthesis technique and properties of rosin polyester polyol modified by terephthalic acid was studied. The factors such as dosage of terephthalic acid, reaction time, reaction temperature and dosage of catalyst were investigated. The structure of rosin polyester polyol modified by terephthalic acid was characterized by infrared spectroscopy and chemical analysis. The pro-ducts with properties of acid value ≤5 mg/g, hydoxy value 380-420 mg/g and viscocity 5.5-6.5 Pa·s was obtained under conditions of rosin 105 g, terephthalic acid 45 g, diethylene glycol 150 g,catalyst 0.5 g, reaction temperature 250℃ and reaction time 7 h. Comparing with the traditional rosin polyester polyol technology, the eserification time was reduced from 9 h to 7 h by adding the terephthalic acid. The application test showed that the properties of the modified rosin polyol foam reached the standard of GB/T 20219-2006.

Key words: terephthalic acid, modification, rosin polyester polyol

CLC Number:

TQ351.471

CHANG Xia;XU Bin;NIE Xiao-an;DAI Wei-di;XU Jun. Study on Rosin Polyester Polyol Modified by Recycled Terephthalic Acid[J]. , 2010, 44(1): 5-8.

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Study on Rosin Polyester Polyol Modified by Recycled Terephthalic Acid

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