聚对苯二甲酸丙二醇酯的合成及表征

采用直接酯化缩聚合成工艺自制新型树脂—聚对苯二甲酸丙二醇酯（ＰＴＴ） 。详细讨论了聚合条件对合成反应的影响。用红外光谱、核磁共振分析表征了ＰＴＴ 的结构,并将结果同ＰＢＴ和ＰＥＴ 作了比较。研究结果表明在酯化反应转化率达到８０ ％ 左右开始进行缩聚反应有利于减少副产物,同时也不会影响制得合格的ＰＴＴ 树脂：在ＰＢＴ 大分子链节中的（ － ＣＨ２） 数是ＰＥＴ 的２ ．０４ 倍,是ＰＴＴ 的１．３４ 倍;ＰＴＴ 大分子链节中的（ － ＣＨ２） 数是ＰＥＴ 的１ ．５２ 倍。因此ＰＴＴ 大分子链的柔顺性在ＰＢＴ 和ＰＥＴ 之间     

PTT纤维的制备及应用

介绍了聚对苯二甲酸丙二酯（ＰＴＴ）纤维及其原料１，３－丙二醇、对苯二甲酸丙二酯的制备方法，综合评述了这种新型聚酯纤维的特性和用途。建议国内开展ＰＴＴ纤维的生产和研究。     

聚对苯二甲酸丙二醇酯的发展前景和技术经济分析

介绍了聚对苯二甲酸丙二醇酯（ＰＴＴ）的应用前景，并就建设一套４．５４万ｔ／ａＰＴＴ装置进行了技术经济分析。     

聚对苯二甲酸丙二醇酯纤维的制备

探讨了聚对苯二甲酸丙二醇酯（ＰＴＴ）纤维制造的干燥、纺丝、拉伸和变形工序,介绍了Ｓｈｅｌ公司的ＣｏｒｔｅｒａＰＴＴ纤维的制备条件是切片含水率必须小于５０μｇ／ｇ,纺丝温度要严格控制在２５０～２７５℃。     

可纺制纤维的新聚酯──PTT

可纺制纤维的新聚酯──ＰＴＴ周溪华（中国石化信息研究所，北京１０００２９）聚对苯二甲酸丙二酯（ＰＴＴ）是一种可纺制纤维的新聚酯。ＰＴＴ可以由对苯二甲酸二甲酯（ＤＭＴ）或精对苯二甲酸（ＰＴＡ）与１，３－丙二醇反应来制取。由于以前无法以经济方法工业生产１...     

PTT在工程塑料中的潜在用途

本文介绍了热可塑性聚酯树脂新品种聚对苯二甲酸丙二醇酯（ＰＴＴ）的合成,性能和特点,在基本性能上与ＰＴＴ和ＰＢＴ进行了比较,它具有ＰＥＴ的较好性能,又有ＰＢＴ那样易加工性,虽具有纤维之特性,并有塑料方面发展之前景,在替代尼龙６方面显示出在工程塑料方面的潜力。     

1,3-丙二醇单烯丙基醚的合成及工艺优化

以1,3-丙二醇、氢氧化钾和烯丙基氯为原料,1,3-丙二醇自身作反应介质,在相转移催化剂四丁基溴化铵作用下合成了1,3-丙二醇单烯丙基醚。实验讨论了反应物料摩尔比、碱加入量、催化剂用量、反应温度和反应时间等因素对产品收率的影响。采用三因素五水平的响应面分析法对工艺条件进行了优化,得到了合成的最佳工艺条件。结果表明：四丁基溴化铵为烯丙基氯的5%,n（1,3-丙二醇）：n（KOH）：n（烯丙基氯）=6.3:1.2:1,反应温度72℃,反应时间3h时,收率可达82.48%。通过对1,3-丙二醇的回收套用大大降低了成本。此工艺具有毒性小、副产少、反应时间短、收率高的优点。     

生物技术生产1，3-丙二醇

1，3-丙二醇（PDO）是近年迅速发展起来的一种重要的有机化工原料，是生产聚对苯二甲酸丙二醇酯（PPT）的主要原料。未来一段时期PDO将有快速发展，市场前景看好。     

丙二醇价格驻足不前

近三年来。国内1，2-丙二醇（以下简称丙二醇）售价裹足不前。平均售价2003年为7581．17元（吨价．下同），2004年为8345．65元。2005年上半年为9995．47元。而作为生产丙二醇的主原料环氧丙烷售价则是三年间迈出了三大步。平均售价从2003年的6643．12元升至今年上半年的12446．16元。翻了近一番。     

台湾开发PTT工艺化路线

台湾联合化学实验室、中国纺织研究中心和华隆公司的研究人员最近宣布,已成功地开发了工业化生产ＰＴＴ的工艺。ＰＴＴ（聚对苯二甲酸１,３－丙二醇酯）是聚酯家族的新成员,目前仅壳牌、杜邦、德吉萨实现了工业化生产。台湾联合化学实验室将负责合成ＰＴＴ的技术,中国纺织研究中心将提供技术服务,华隆公司将承担生产和销售。其初步生产能力为５０００ｔ／ａ。台湾开发PTT工艺化路线@陈秋红     

Physical characteristics and morphologies of PTT/m-iPP bi-component filaments of the island-in-sea type

The work discusses preparation, structure and selected properties of two special filaments based on poly(trimethylene terephthalate) (PTT) and metallocene isotactic polypropylene (m-iPP) bi-component filaments of the island-in-sea type. PTT microfilaments are formed by removing m-iPP from PTT (island)/m-iPP (sea) conjugated filaments. m-iPP exhaust dyeable filaments are produced from m-iPP (island)/PTT (sea) conjugated filaments. This study thoroughly investigates the physical characteristics and morphologies of PTT/m-iPP bi-component filaments of the island-in-sea type. The dye exhaustions of the fabrics made of PTT series filaments are compared. Experimental DSC results indicated that PTT and m-iPP crystallites formed an immiscible system. The tenacity of the PTT/m-iPP (and m-iPP/PTT) conjugated filaments initially declined and then increased as the proportion of m-iPP (and PTT) increased. Clearly, the 50/50 weight ratio PTT/m-iPP had the lowest tenacity. The experimental crystallinities revealed that PTT and m-iPP crystallites easily formed individual domains, indicating that PTT and m-iPP together constituted an immiscible system. On the morphology, the blends were had a dispersed phase structure. PTT and m-iPP polymers were immiscible. In this investigation, PTT microfilaments were produced and a large size from 2.3 to 2.6 μm in diameter was clearly observed. m-iPP exhaust dyeable filaments were also prepared. The dye exhaustions of various fabrics followed the order, m-iPP exhaust dyeable filaments, conventional PTT filaments, PTT microfilaments respectively.     

PTT工程塑料的开发和应用

介绍聚对苯二甲酸丙二酯(PTT)基础树脂的合成工艺路线及其主要原料1，3-丙二醇(PDO)的生产工艺路线。阐述了PTT树脂的发展概况和现状，国际主要生产商的发展动向，国内PTT树脂和原料PDO的开发状况及建设规划。比较了PTT、PET、PBT、PA66和PC的纯树脂品级和玻璃纤维增强品级的性能，概述了PTT的开发和应用状况，介绍了商业化系列PTT产品的牌号和性能，并展望了PTT的市场前景。     

阳离子染料可染PTT的性能研究

研究了聚对苯二甲酸丙二醇酯(PTT)及阳离子染料可染PTT(改性PTT)的性能。结果表明:随着第三单体间苯二甲酸丙二醇酯-5-磺酸钠(SIPP)加入量的增加,改性PTT的玻璃化转变温度、结晶温度逐渐升高,熔点呈减小趋势,而SIPP的加入对PTT的热降解影响不大;改性PTT的表观粘度随剪切速率的增加而减小,属于非牛顿流体,但其流变性变差;加入第四单体聚乙二醇(PEG)对改性PTT的流变性能有所改善;随着第三单体添加量的增加,改性PTT纤维对阳离子染料的上染率增大,加入第四单体后,上染速率及最终上染率提高。     

Miscibility and crystallization kinetics of poly(trimethylene terephthalate)/amorphous poly(ethylene terephthalate) blends

The miscibility and crystallization kinetics of the blends of poly(trimethylene terephthalate) (PTT) and amorphous poly(ethylene terephthalate) (aPET) have been investigated by differential scanning calorimetry (DSC) and polarized optical microscopy (POM). It was found that PTT/aPET blends were miscible in the melt. Thus, the single glass transition temperature (T_g) of the blends within the whole composition range and the retardation of crystallization kinetics of PTT in blends suggested that PTT and aPET were totally miscible. The nucleation density of PTT spherulites, the spherulitic growth, and overall crystallization rates were depressed upon blending with aPET. The depression in nucleation density of PTT spherulites could be attributed to the equilibrium melting point depression, while the depression in the spherulitic growth and overall crystallization rates could be mainly attributed to the reduction of PTT chain mobility and dilution of PTT upon mixing with aPET. The underlying nucleation mechanism and growth geometry of PTT crystals were not affected by blending, from the results of Avrami analysis. POLYM. ENG. SCI., 47:2005–2011, 2007. © 2007 Society of Plastics Engineers     

玻纤增强PTT及其性能研究

初步研究了聚对笨二甲酸丙二酯(PTT)固相聚合及其玻璃纤维(GF)增强工艺,探讨了PTT的热稳定性及GF含量和树脂特性粘度对GF增强PTT性能的影响,并对PTT与聚对苯二甲酸丁二酯(PBT)增强前后的性能进行了比较。结果表明,添加GF可大幅度提高GF增强PTT的力学性能和热性能;树脂特性粘度对未增强PTT缺口冲击强度和热变形温度的影响较为明显,但对GF增强PTT的性能影响较小;高粘度PTT的热稳定性较差;GF增强PTT、PBT的综合性能相差不大。     

PTT/MMT复合材料流变性能的研究

采用熔融共混法制备了聚对苯二甲酸丙二酯/蒙脱土（PTT/MMT）复合材料,并采用毛细管流变仪对复合材料的流变性能进行了研究。结果表明,PTT和PTT/MMT复合材料均为假塑性流体,1 %~3 %的MMT就可以显著改善复合材料的流动性。复合材料的非牛顿指数大于PTT,表观黏度小于PTT,流动性优于PTT,可以在较低的温度下成型加工;复合材料的黏流活化能高于PTT,更适合通过升高温度的方法来改善其流动性。     

PET/PTT共混纤维的制备及结构性能研究

将聚对苯二甲酸乙二酯(PET)与聚对苯二甲酸丙二醇酯(PTT)共混纺丝制备PET/PTT共混纤维,研究了共混纤维的结构与性能。结果表明,随着PTT含量的增加,PET/PTT共混纤维的晶粒尺寸逐渐增大;PET/PTT共混纤维的断裂强度较PTT纤维大,回弹性较PET纤维好,沸水收缩率较PET纤维大;当PTT质量分数为50%时,共混纤维的结晶度出现最小值,沸水收缩率出现最大值。     

PET/PTT合金结晶形态的研究

采用XP-201热台偏光显微镜研究了对苯二甲酸乙二醇酯（PET）/对苯二甲酸丙二醇酯（PTT）合金等温结晶时的结晶形态及影响因素。研究结果表明：随着等温结晶温度的升高,PET/PTT(40/60)合金的结晶诱导期变长;在观察的时间范围内各样品的球晶尺寸随着时间的延长而增大;随着PTT含量的增加,样品球晶的线生长速率增大,球晶尺寸增大;对比不同温度下等温结晶的球晶形态,PET/PTT(100/0)样品在190℃结晶时球晶尺寸最大, PET/PTT(40/60)样品和PET/PTT(100/0)样品在180℃结晶时球晶尺寸最大; PET/PTT(0/100)样品等温结晶时呈现出了复杂的条带球晶。     

Structure,nonisothermal crystallization behavior,and thermal property study of poly(trimethylene terephthalate)/cellulose acetate butyrate blends

Poly(trimethylene terephthalate) (PTT)/cellulose acetate butyrate (CAB) blends were prepared by melting blending through a co‐rotating twin screw extruder. The structures of PTT/CAB blends were characterized by scanning electron microscope (SEM) and Fourier transform infrared (FTIR) spectra, and the results showed that CAB phase dispersed homogeneously in the PTT matrix and there existed evident phase interface between PTT and CAB. The nonisothermal crystallization behavior was investigated by differential scanning calorimetry (DSC) and was described with modified Avrami equation of Jeziorny and Mo equation, respectively. The results indicated that the half crystallization time (t_{1/ 2}) is much shorter, the nonisothermal crystallization kinetic rate constant (Z_c) is bigger at a given cooling rate, the cooling rate [F_z(T)] is smaller at a given relative crystallinity (X _t) of PTT/CAB blends than those of PTT, which proved that the addition of CAB improved the crystallization of PTT and made PTT crystallize more perfect and faster than pure PTT. In addition, thermogravimetric analysis (TGA) curves of PTT and PTT/CAB blends showed that effects of CAB content on the thermal decomposition of PTT/CAB blends were little. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers