热塑性聚酯弹性体海特利尔(Hytrel)的性能与应用

海特利尔(Hytrel)是美国杜邦公司1972年投入市场的热塑性聚酯弹性体,是一类兼具热塑性和弹性的高性能聚合物,在许多领域中可替代橡胶、塑料和金属,因而又被称为工程弹性体。1989年1月1日止Hytrel的年生产能力估计     

新型热塑性弹性体的开发应用

新型热塑性弹性体的开发应用据《制品特品信息》，１９９５，№３：９报道，汕头经济特区澄海永新汽车橡塑配件总厂采用聚氯乙烯和粉末丁腈橡胶等材料，开发了热塑性弹性体应用于汽车工业等领域，并形成了生产能力。该材料的配方如下：粉状ＰＶＣ１００；粉末ＮＢＲ２０；...     

产品开发

开发异戊二烯迎来最好契机；我国塑料工业的重点发展领域；优良工程塑料改性聚苯醚前景好；聚丙烯腈基碳纤维前途广阔；热塑性聚酯弹性体开发前景佳；     

PET工程塑料现状及展望

工程塑料是指可作为工程材料代替金属结构部件使用的塑料,分为通用工程塑料和特种工程塑料。热塑性聚酯(TPPE)通用工程塑料包括PET等很多品种,PET是TPPE中产量最大,价格最低廉的品种。我国PET产量居世界首位,但PET在工程塑料中的应用却很少。介绍了PET工程塑料的发展过程、改性及应用。讨论了我国聚酯企业进入热塑性聚酯材料领域的可行性。     

热塑性弹性体研究进展

综述了热塑性弹性体的基本结构、种类和发展历程；对热塑性聚氨酯弹性体、苯乙烯类热塑性弹性体、热塑性聚酯弹性体、热塑性聚烯烃弹性体和热塑性聚酰胺弹性体等几种典型弹性体的基本结构与特点、发展历程及合成方法等进行了介绍；最后，对热塑性弹性体在高性能、功能化和高附加值方面的开发及其对产业化的支持与发展进行了展望。     

美国杜邦Rynite热塑性工程塑料聚酯（PET）

介绍Ｒｙｎｉｔｅ热塑性聚酯的品级、牌号、性能及应用，影响性能的主要因素，模具设计及成型工艺条件。     

电线电缆用阻燃热塑性弹性体的研究应用进展

介绍了几种用于电线电缆的阻燃热塑性弹性体的研究及应用,主要包括聚烯烃热塑性弹性体、苯乙烯类热塑性弹性体、聚氨酯热塑性弹性体和聚酯类热塑性弹性体。     

专利摘登

脱模性能良好的聚酯的组成及其透明的耐热制品；多层聚酯膜制品；聚酯的连续水解和钌配位化合物催化剂的回收；制备改性聚酯的预缩聚及缩聚催化剂；制备聚对苯二甲酸丙二醇酯（PTT）的酯化和缩聚复合催化剂；制备改性聚酯的复合催化剂；制备高收缩性聚酯纤维的改性聚酯；制备高收缩纤维的聚酯；改性聚酯的制备；用于改性聚酯的预缩聚和缩聚复合催化剂的制备；在直接酯化制备的聚酯中加入次甲基紫外光吸收剂的方法；将呋喃基-2-次甲基紫外光吸收剂加入至聚酯中的方法；碳酸钙改性的PET；不透明包装瓶及其制造方法；以聚酯为基体的热塑性合成材料及其制造方法。以及由它制得的透明中空制品；热塑性树脂制成的液体食品包装瓶；用废涤纶生产耐侯性的塑料制品.     

热塑性聚酯橡胶材料投放市场

热塑性聚酯橡胶材料投放市场国家受力结构工程塑料工程技术研究中心研制的年产３００ｔ热塑性聚酯弹性体装置近日完成了试车。热塑性聚酯弹性体又称聚酯橡胶，它是聚酯、聚醚的嵌段共聚物，通过调整各嵌段的组成和比例，可制得从柔软的橡胶至坚硬的塑料之间的一系列产品，...     

热塑性聚酯弹性体

介绍了热塑性聚酯弹性体的合成、性能、加工和应用。TPEE是由聚对苯二甲酸丁二醇酯硬段和聚醚或脂肪族聚酯软段组成的嵌段共聚物，具有优异的力学性能、热性能和耐化学介质性能，可在-70～200℃使用，采用挤出、注射、吹塑等成型工艺进行加工。TPEE广泛用于汽车、制造、体育、薄膜、生物材料及高分子改性剂等领域。     

Blends of thermoplastic polyesters with amorphous polyamide. I. Thermal and crystallization behavior

The thermal and crystallization behavior of blends of three thermoplastic polyesters with different degrees of crystallizability, with an amorphous aromatic polyamide is reported. The thermoplastic polyesters used in the investigation were poly(butylene terephthalate) (PBT), poly(ethylene terephthalate) (PET) and a co-polyester of 1,4 cyclohexane-dimethanol, ethylene glydol and terephthalic acid (PETG). The blends exhibited a single glass transition temperature indicating mlseibility in the amorphous phase. The results of thermal analysis indicated that the crystallization of all the three polyesters is facilitated in the molten phase as a result of blending. The blending significantly Increased the degree of crystallinity of PET, but there was no change in the crystallinity of PBT. It is thus observed that the extent of change in both the crystallization rate and the degree of crystallinity of polyesters depend on the inherent crystallizability of the individual polyester.     

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。     

Association between plasticized starch and polyesters: Processing and performances of injected biodegradable systems

Different formulations of wheat thermoplastic starch (TPS) have been processed with various plasticizer/starch ratios and moisture contents. The biodegradable polyesters tested are polycaprolactone (PCL), polyester amide (PEA), polybutylene succinate adipate (PBSA) and polybutylene adipate co terephtalate (PBAT). TPS and polyesters are melt blended in different proportions by extrusion and then injected to obtain dumbbell specimens. Various properties are evaluated such as the mechanical properties (tensile and impact tests), and the hydrophilic character with contact angle measurements. Additionally, uniaxial shrinkage is evaluated. Results show that the addition of polyester to TPS increases the dimensional post‐injection stability. Blend modulus values are close to the results of the classical rule of mixture. Elongation at break, resilience values and SEM observations seem to give some indications about the compatibility between both polymeric systems. PBAT and PEA present better results than PCL and PBSA. Contact angle measurement show that we have a drastic increase of the hydrophobic character from 10% of polyester in the blend. The different combinations of TPS and polyesters give a wide range of mechanical behavior for compostable materials, to be developed in specific applications.     

Thermoplastic polyester resins for containers

An overview of the use of polyesters for containers is presented. The market for polyethylene terephthalate container resin should reach 760 million pounds by 1989. Diethylene glycol, a polymerization by-product, and other comonomers reduce the polymer melting point and crystallization tendency, yielding wider container processing latitude. The effect of these modifications on creep and tensile strength is discussed. Improved gaseous barrier approaches and hot-fillable container opportunities are presented, Newer applications for thermoplastic polyester containers are summarized.     

全消光阻燃聚酯切片工业制造及性能表征

采用2-羧乙基苯基次磷酸(CEPPA)、[(6-氧(6H)-二苯并(c,e)(1,2)-氧磷杂己环-6-酮)甲基]-丁二酸(DDP),在连续化聚酯装置上工业化生产全消光阻燃聚酯切片。介绍了全消光阻燃聚酯切片的生产过程,并对产品性能进行了表征。结果表明:生产过程稳定,产品质量优异,全消光阻燃聚酯切片的结晶性能低于常规全消光切片,热稳定性能优于常规全消光切片,阻燃性能优良。     

Synthesis and physical properties of lipid-based poly(ester-urethane)s,I: Effect of varying polyester segment length

Four aliphatic thermoplastic poly(ester-urethane)s (PEUs) with similar molecular weights but varying polyesters molecular weight (534–1488 g/mol) were prepared from polyester diols, obtained by melt condensation of Azelaic acid and 1,9-Nonanediol, and 1,7-heptamethylene di-isocyanate (HPMDI) all sourced from vegetable oil feedstock. The thermal, and mechanical properties, and crystal structure of PEUs were investigated using DSC, TGA, DMA, tensile analysis and WAXD. For sufficiently long polyester chain, WAXD data indicated no hydrogen bonds polyethylene (PE)-like crystalline packing and for short polyester chains, small crystal domains with significant H-bonded polyamide (PA)-like packing. Crystallinity decreased with decreasing polyester molecular weights. The polymorphism of PEUs and consequently their melting characteristics were found to be largely controlled by polyester segment length. TGA of the PEUs indicated improved thermal stability with decreasing polyester chain length, suggesting a stabilization effect by urethane groups. Mechanical properties investigated by DMA and tensile analysis were found to scale predictably with the overall crystallinity of PEUs.     

不饱和脂肪族聚酯生物降解性的研究

以1，4-反丁烯二酸和一缩二乙二醇（DEG）为原料，采用缩聚法合成端羟基不饱和聚酯，并采用红外光谱分析（FT—IR）、羟值、酸值、黏度等对所得聚合物进行表征，确认了其分子结构．对其降解性进行研究，并且与1，4-丁二酸与一缩二乙二醇合成的饱和脂肪族聚酯进行了对比。研究结果表明，不饱和脂肪族聚酯和饱和脂肪族聚酯的生物降解性差别不大，也就是双键的引入对其生物降解性没有大的影响；但是不饱和脂肪族聚酯膜经过高温处理后，双键会打开发生交联，而交联后的不饱和脂肪族聚酯的生物降解性变差，而且交联度越高，生物降解性越差。     

Shape memory polyester-based nanomaterials: cutting-edge advancements

ABSTRACT

Shape memory polymers have gained immense importance across technical industries ranging from aerospace and electronics to biomedical fields. This article presents state-of-the-art overview of versatile shape memory polyesters and derived nanocomposites. Shape memory polyesters such as polylactic acid, polyhydroxyalkanoate, polycarbonate, and polyester blends have been identified. Shape memory polyesters have also been reinforced with nanoreinforcements including fullerene, graphene, carbon nanotube, and polyhedral oligomeric silsesquioxane (POSS). Consequently, different groups of stimuli-responsive polyester nanocomposites have been discussed such as polyester/graphene, polyester/carbon nanotube, polyester/fullerene, and polyester/POSS. Future development of shape memory polyesters may reveal superior electrical, mechanical, and thermal performance for technical applications.     

Reactive blending of thermosets: Molecular,morphological and mechanical analysis

A number of different approaches were used to enhance the toughness of tri- and tetrafunctional epoxies and of unsaturated polyester resins. In the case of epoxies, tough, thermally stable, engineering thermoplastics, namely a bisphenol-A polycarbonate and a thermoplastic poly(ether imide) (Ultem 1000) were employed as modifiers. For unsaturated polyesters a different approach was adopted: two commercial liquid rubbers were chemically modified to enhance their reactivity towards the matrix functionalities. In particular, a hydroxy-terminated polybutadiene and an aminoterminated butadiene-acrylonitrile copolymer were transformed into isocyanate-terminated and maleimide-terminated rubbers, respectively. A further system which is described in the present contribution is aimed at mitigating another deficiency of the polyester matrix, namely its rapidly decreasing rigidity at temperatures above room temperature. In this case, a thermosetting bismaleimide was incorporated into the resin as a co-reactive second component.     

热塑性弹性体最新发展现状

介绍了苯乙烯类、烯烃类、聚氨酯类、聚酯类等主要的热塑性弹性体研究大类,列举了国内外关于这几大类的部分最新研究发现,并总结前人的实践与经验,指出未来热塑性弹性体的生产及研发趋势。