聚酯废水处理技术研究现状

结合聚酯废水处理现状,介绍了聚酯废水处理技术的研究进展,并对聚酯废水处理的方法进行了展望。     

含氟聚酯的制备及其应用研究进展

含氟聚酯具有优异的疏水性、耐溶剂性和热稳定性等性能,能够延长聚酯产品的使用寿命、拓宽其应用领域.本文介绍了含氟聚酯的主要合成方法、总结了含氟聚酯的主要特性,就氟化改性聚酯研究现状及其应用前景进行了展望.     

阻燃聚酯现状及发展趋势

简要介绍了国内外阻燃聚酯的发展概况,聚酯阻燃机理,聚酯纤维阻燃化方法以及用于阻燃聚酯的阻燃剂,并指出了阻燃聚酯的发展趋势。     

聚酯聚合物多元醇的制备方法

介绍了聚酯聚合物多元醇以及大分子分散剂端羟基预聚体、巯基改性聚酯多元醇和顺丁烯二酸酐(MA)改性聚酯多元醇的制备方法,对合成聚酯聚合物多元醇所需的原料提出了具体要求。聚酯聚合物多元醇用于制备聚氨酯软质泡沫具有一定的价格优势。     

阻燃剂FR—101在不饱和聚酯树脂中的应用效果

本文首先叙述了不饱和聚酯的阻燃化目的、意义和阻燃化方法。然后介绍了阻燃剂FR—101的性能特点及在不饱和聚酯中的使用方法。并着重介绍了添加阻燃剂FR—101的阻燃不饱和聚酯玻璃钢的阻燃性能、机械性能和电性能、耐化学药品腐蚀性能等。     

聚酯酰胺的应用及合成研究

根据聚酯酰胺的用途,介绍了用于热熔黏合剂、纤维、可生物降解材料、片材/包装材料等领域的聚酯酰胺的合成方法。     

聚酯的剖析

本文对聚酯剖析的方法作了概括介绍。利用化学降解法对聚酯样品进行分解和分离,再配合红外光谱分析、核磁共振波谱、光谱分析等方法就能对聚酯的组成作出正确的判断。本文对聚酯的化学组成分析、助剂与添加剂的测试以及聚集态结构对剖析工作的影响都做了叙述。     

不饱和聚酯银粉钮扣的剥色与移染

本文着重介绍了不饱和聚酯银粉钮扣的剥色方法、应用工艺和适用条件.初步探讨了聚酯钮扣的移染方法.     

水系聚酯纺织助剂的合成与应用

本文简述了水系聚酯作为纺织助剂的重要性和可行性,介绍了水系聚酯的原料、合成方法及在纺织上的应用。     

环保型聚酯材料的发展及应用

介绍了聚酯和聚酯材料的概念和分类,并概述了再生聚酯、石油基可降解聚酯、生物基聚酯、生物基可降解聚酯等四类环保型聚酯材料的发展、应用领域、问题与展望。     

10-(2,5-二羟基苯基)-9,10-二氢-9-氧杂-10-膦菲-10-氧化物的合成

以三氯化磷、邻苯基苯酚和对苯醌为主要原料,通过三步反应合成了含磷阻燃剂10-(2,5-二羟基苯基)-9,10-二氢-9-氧杂-10-膦菲-10-氧化物(ODOPB)。首先将酯化、酰基化、水解反应连续进行,得到了中间体2-(2-羟基苯基)苯基膦酸(HPPA),收率92.5%。然后HPPA分子内脱水成环反应得到9,10-二氢-9-氧杂-10-膦菲-10-氧化物(DOPO),收率93.2%。最后DOPO与对苯醌进行加成反应得到ODOPB,收率90.2%。三步合成总收率77.8%。HPPA的合成原料配比为n(三氯化磷)∶n(邻苯基苯酚)=1.3,以三氯化磷部分加入部分滴加的方式,且n(直接加入三氯化磷)∶n(滴加三氯化磷)=5.5,于150~200℃滴加反应。用红外光谱、元素分析、核磁氢谱、质谱对产物进行了表征。ODOPB已在覆铜板环氧树脂中成功应用,该合成方法已申请国家专利,正在进行产品中试。     

Preparation and physical properties of polyurethane flame retardant coatings using phosphorus-containing lactone modified polyesters

Two-component polyurethane flame retardant coatings were prepared using phosphorus-containing lactone modified polyesters (PLMPs) and polyisocyanate. PLMPs were synthesized by poly-condensation of dimethyl phenylphosphonate, a flame retardant component with polycaprolactone, adipic acid, and trimethylolpropane. PLMPs were prepared with dimethyl phenylphosphonate content from 10 to 20 wt%. It was found that various physical properties of these new flame retardant coatings were comparable to non-flame retardant coatings. The flammability of coatings depends strongly on the dimethyl phenylphosphonate content in PLMP. Coatings with 20 wt% dimethyl phenylphosphonate content did not burn in the vertical burning test. Dept. of Chem. Eng., Yongin 449-728, Korea. Ansan 425-110, Korea.     

Preparation and characteristics of two-component polyurethane flame retardant coatings using 2,3-dibromo modified polyesters

Two-component polyurethane flame retardant coatings were prepared by blending 2,3-dibromo modified polyesters (2,3-DBPOs) and polyisocyanate. 2,3-DBPOs were synthesized by polycondensation of 2,3-dibromopropanoic acid, a flame retardant aliphatic carboxylic acid, with 1,4-butanediol, trimethylolpropane, and adipic acid. The content of 2,3-dibromopropanoic acid was varied at 10, 20, and 30 wt % for the polycondensation reaction. Various physical properties of these new flame retardant coatings were comparable to non-flame-retardant coatings. They showed desirable properties for a flame retardant coating such as rapid drying and 9–12 h of pot life. Coatings with 30 wt % 2,3-dibromopropanoic acid did not burn using the vertical burning test. © 1996 John Wiley & Sons, Inc.     

Flame‐retardant polyesters. II. Polyester polymers

Two flame‐retardant polyesters were polymerized with two types of phosphorous flame retardants. 3‐(Hydroxyphenyl phosphinyl)propanoic acid (HPP) was used as a main‐chain type, and 9,10‐dihydro‐9‐oxa‐10‐2,3‐dicarbonylpropyl‐10‐phosphophenanthrene‐10‐oxide (DI) was used as a pendant type. Polymerization was accomplished on a commercial scale with a three‐reactor system to exclude the compositional variation of oligomeric ethylene terephthalate. A longer polycondensation time and a higher dosage of the catalyst were necessary for DI with respect to HPP because of the high content and relatively low reactivity of the flame retardant. However, the content of diethylene glycol (DEG) in the polyester, which formed during the polymerization, was much higher in the case of HPP. The produced polyesters had almost the same molecular weight, but the DEG contents in the polyesters were quite different. The higher DEG content in the HPP polyester reduced the thermal stability. The greater flexibility of the HPP polyester chain resulted in easier crystallization and a lower crystalline temperature. The HPP polyester had higher susceptibility to thermal degradation because of low resistance to thermal chain scission, degraded at a lower temperature, and was more easily degraded because of a weak P? O bond linkage in the main chain. The DI polyester, whose phosphorous atom was highly sterically hindered, showed better alkaline resistance than the HPP polyester because of the lower acidity and lower hydrophilic DEG content. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007     

Syntheses and characterizations of two-component polyurethane flame retardant coatings using 2,4-dichloro modified polyesters

Polyurethane flame retardant coatings are composed of polyols and polyisocyanates. Flame retardant groups are usually introduced to the polyol structure. In this research intermediates were obtained by esterification of 2,4-dichlorobenzoic acid and trimethylolpropane for the purpose of introducing a flame retardant group to the polyol structure. Then chlorine-containing modified polyesters were synthesized by polycondensation of trimethylolpropane, adipic acid, 1,4-butanediol, and the intermediate. The content of 2,4-dichlorobenzoic acid in the intermediate was varied with 10, 20, and 30 wt%. Two-component polyurethane flame retardant coatings were prepared by blending the products with polyisocyanate. Various physical properties of these new flame retardant coatings were comparable to non-flame retardant coatings. They showed drying times of four to seven hours and pot life times of 14–20 hr, which could belong to the flame retardant coatings with long pot life time. The coating with 30 wt% 2,4-dichlorobenzoic acid showed a self-extinguishing property in the vertical burning test. Dept. of Chemical Engineering, Yongin 449-728, Korea. Ansan 425-110, Korea.     

新结构环保型阻燃聚酯研究进展

对近几年环保型阻燃聚酯的种类进行了综述,分析探讨了其阻燃机理、     

Synthesis of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide derivative grafted polyethylene films for improving the flame retardant and anti-dripping properties

Two novel flame retardant and anti-dripping PE films were successfully synthesized in three steps. PE-g-GMA film was first prepared by simultaneous electron beam irradiation to graft glycidyl methacrylate (GMA) onto PE film. 4,4′-[1,4-phenyl-bis(9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-yl)dimethyneimino)]diphenol (DOPO-t) and 4,4′-[1,3-phenyl-bis (9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-yl)dimethyneimino)]diphenol (DOPO-m) were then fabricated via a one-pot method. Finally, two DOPO derivative functionalized PE films were obtained through the ring opening reactions of PE-g-GMA film with DOPO-t and DOPO-m, respectively. Combustion properties, flame retardancy, thermal performance, and thermal shrinkage of these films were evaluated. Compared with pure PE film, the burning rate of anti-dripping DOPO-t/DOPO-m functionalized PE films was reduced by 13.2% and 50.0%, and the limiting oxygen index value climbed to 18.5 and 19.5, respectively. The residual chars from DOPO-t/DOPO-m functionalized PE films at 700°C were increased, and the shrinkage ratio decreased remarkably, which could effectively prevent the spread of fire. We also discussed the effect of structural difference between DOPO-t and DOPO-m on the above properties and the flame retardant mechanism of two DOPO derivative functionalized PE films preliminarily. This work provides a method for introducing DOPO derivatives into PE molecules to improve their flame retardancy and anti-dripping properties.     

10-(异丙基-2-醇)-9,10-二氢-9-氧杂-10-膦杂菲-10-氧化物的合成

以9,10-二氢-9-氧杂-10-膦杂菲-10-氧化物(DOPO)和丙酮为原料,合成10-(异丙基-2-醇)-9,10-二氢-9-氧杂-10-膦杂菲-10-氧化物。考察了原料摩尔比、反应温度和反应时间对产物收率的影响。结果表明,较优工艺条件为:n(丙酮)∶n(DOPO)=12∶1,反应温度为50℃,反应时间为30 min时,DOPO的转化率为99%,目标产物收率为90%。     

以聚C_(9-13)二元酸乙二醇酯为基础的粘接型聚氨酯树脂的合成与研究

:采用菜油脂肪酸氧化裂解所得 C9 13混合二元酸与乙二醇缩聚 ,制备了线型聚酯 ,以此为基础合成了全热塑的端羟基聚氨酯树脂。聚酯的分子量、聚酯与扩链剂、二异氰酸酯的配比对聚氨酯的溶解性、粘接强度均有显著影响。用分子量 30 0 0的聚C9 13二元酸乙二醇酯 ,按聚酯∶扩链剂∶二异氰酸酯 =1∶ 1∶ 2 ( mol比 )的投料 ,制得的聚氨酯树脂具有最佳的综合性能 ,适于多种鞋材的粘合。     

Studies on hexolic anhydride based polyesters,II. Thermogravimetric analysis

Unsaturated polyesters based on hexolic anhydride (5,6,7,8,9,9-hexachloro-1,2,3,4,4a,5,8,8a-octahydro-5,8-methanonaphthalene-2,3-dicarboxylic anhydride), maleic anhydride, phthalic anhydride, cis-2-butene-1,4-diol, 2,3-dichloro-2-butene-1,4-diol and 2,3-dibromo-2-butene-1,4-diol were synthesized. The thermal behaviour of the polyesters was studied using thermogravimetric technique. The results were compared with those available for other hexolic anhydride and HET-acid (1,4,5,6,7,7-hexachlorobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid) based polyesters. The direct study and comparative study of the polyesters revealed that the bromodiol is prominent in increasing the flame retardant character of the polyesters in which it is incorporated; alkenic diols are inferior compared to saturated diols regarding the thermal stability of the polyesters; as the number of carbon atoms in the saturated diol increases, the stability and flame retardancy of the polyesters decrease; branching in the diol part decreases the stability of the polyesters, with hexolic anhydride based polyesters being thermally more stable than HET-acid based polyesters.