不饱和聚酯钮扣

前言作为热固性树脂之一的不饱和聚酯,1942年首先由美国Bubber公司开始工业生产,广泛用于玻璃纤维增强塑料(FRP)、浇铸料、涂料及粘结剂等。浇铸用不饱和聚酯在日用杂品部门用量最大的是制造聚酯钮扣,这种钮扣     

不饱和聚酯涂料

不饱和聚酯涂料的主要应用范围是喷涂在模制品上的凝胶涂层(gelcoat)。它主要是用在船舶工业的各种类型小船,也用于浴室的装置,如制备淋浴分隔间及浴缸外壳。 另外,不饱和聚酯还可用于高耐久性、高光泽木器清漆。但是这些系统的使用受到苯乙烯毒性的严格限制。     

不饱和聚酯树脂的进展

简要总结不饱和聚酯树脂的基本要点,综述近年来有关不饱和聚酯树脂的无氧阻性、阻燃性、水可溶性以及紫外光固化等方面的文献资料,分析国内的生产情况,指出应当注意的研究和开发方向。     

GL—93不饱和聚酯腻子

研制了ＧＬ－９３不饱和聚酯腻子，其性能指标与日本同类产品相当，具有广阔的应用前景。介绍了不饱和聚酯及其腻子的法。讨论了影响腻子性能。的诸种因素及采取的相应措施。     

用烯丙基醚的不饱和聚酯

鉴于不饱和聚酯具有极佳的性能(快速固化,极佳的抗化学性及抗沾污性,高光泽及厚膜,是用于木器涂料最重要的树脂之一。Kent Sorensen在本文的第一部份阐述了如何用三羟甲基丙烷单烯丙基醚(TMPME)来配制及生产不饱和聚酯,在第二部份阐述了固化动力学及某些配方的性能。     

不饱和聚酯涂料的制法

由不饱和多元醇与多价醇经酯化后得到典型的不饱和聚酯,将它溶解于苯乙烯之类的乙烯基单体之中,待添加了合适的促进剂(例如环烷酸钴之类),以及催化剂(例如过氧化甲乙酮之类)以后,即整体固化,由此即可得到100％的固态物。但是,此种不饱和聚酯固化之际,与空气接触的部分受到氧障碍,在它的表面残留有粘着性,不能做到完全干燥。为了弥补这一缺点,往往是在涂面上铺设赛璐玢,或者添加微量的石蜡,使涂面析出,将它作为与空气的隔断膜,从而使表面完全固化。但由于添加了蜡,固化后,蜡浮起的部分就会呈现     

利用聚酯废料研制不饱和聚酯树脂

本文叙述了用ＰＥＴ废料经催化醇解和酯化缩聚制得每吨成本低于一般通用型ＵＰ树脂５００元的新型不饱和聚酯树脂，其分子量为１９００－２３００，酸值１９－２９，贮存稳定性八个月。     

不饱和聚酯树酯促进剂的研究

本文研究了一种新型复合促进剂,把它加入到不饱和聚酯树脂中使用时,只需加入固化剂(如过氧化甲乙酮或过氧化环己酮)在室温下即可固化成型,且可得胶凝速度较快,浇铸体外规颜色变浅或无色的制品,这一结果在制造无色透明浇铸品时,很有实用价值。     

不饱和聚酯树脂与模塑料

一、前言不饱和聚酯树脂(以下简称UPR)主要用于制造玻璃钢。由于玻璃钢的强度大,加工成型方便,尤其在第二次大战后发现了室温固化剂后,世界各国相继投入工业化生产,其增长速度远远超过其他塑料品种。五十至七十年代     

气干性不饱和聚酯腻子的研制

本文介绍了气干性不饱和聚酯腻子所用聚酯树脂的主要原料及合成工艺、腻子和固化剂的配方制备工艺。讨论了影响腻子性能的各种因素。     

Properties and Aggregate Structure of Unsaturated Polyester/Phenolic Resin Blends

In this study, unsaturated polyester resin (UP) is blended with resole type phenolic resin, co-crosslinking process performed and the resin blends show miscibility and interpenetration network (IPN) structure. Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) are employed to examine the aggregate structure of crosslinked network of the UP/phenolic resin blend. Tensile fractured sections of the resin blends are observed using scanning electronic microscopy (SEM) to shed light on their miscibility. Tensile and flexural tests were also conducted to examine the mechanical properties of the UP/phenolic resin blends. The results show that UP20/Ph80 and UP40/Ph60 resin blends have well-formed Interpenetrating Network (IPN) structures while phase separation is observed for UP60/Ph40 resin blend. Finally, thermal cure of UP80/Ph20 resin blend is incomplete, thus showing immiscibility. The mechanical properties of all resin blends at different mixing proportions deviate from a linear relationship and show a concave curve, indicating the non-additive effect of blending.     

Unsaturated polyester resin modified with poly(organosiloxanes). II. Acoustic emission study on glass-fiber-reinforced resin

This work aims to study the adhesion of an isophthalic acid based unsaturated polyester resin chemically modified by grafting copolymerization of a poly(organosiloxane) to the glass fiber. The failure mode of the single-edge notched tensile specimen, cut from pressed plates containing 50 wt % of nontreated and silane-treated milled glass fiber, was studied by acoustic emission (AE) technique. It was found that the aforementioned resin modification enhanced the adhesion between the fiber and the resin. This was suggested by a shift in the AE amplitude and energy toward higher values. On the other hand, the matrix modification had no significant effect if glass fiber with suitable unsaturated polyester resin (UP) sizing was incorporated. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 3280–3289, 2001     

Unsaturated polyester resin modified with poly(organosiloxanes). I. Preparation,dynamic mechanical properties,and impact resistance

Unsaturated polyester resins (UP) display a wide range of applications depending on the proper choice of raw materials and cure conditions. However, some applications are limited to their low-impact resistance, which can be enhanced by the incorporation of modifiers that increase the flexibility of the network. This work aims to incorporate flexible poly(organosiloxane) segments in the UP network as a graft copolymer, as a way of minimizing the low adhesion between the resin and the modifier and enhance its flexibility. Because polyester and poly(organosiloxanes) are immiscible mixtures, the grafting copolymerization during the cure can promote compatibilization between both polymers. Hence, glycidyl methacrylate (GMA) is added to the resin network by radical reaction, as well as 1,3-aminopropyltriethoxysilane (APTS), amino groups of which react with GMA. The addition of a siloxane (1,1,3,3-tetramethyl-1,3-diethoxydisiloxane) allows the poly(organosiloxane) network to grow and the addition of water guarantees the hydrolysis and polycondensation during the cure. In this way it is possible to increase its flexibility. The grafting copolymerization is evaluated by dynamic mechanical analysis and the impact resistance of pure and modified polyester resins is evaluated by the Izod test. The grafting of a flexible segment in the UP chains enhances the impact resistance of the polyester resin at low-modifier concentration. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 3272–3279, 2001     

不饱和聚酯树脂涂料的研究进展

不饱和聚酯树脂(UPR)涂料是发展最早的涂料品种之一,将UPR作为涂料的成膜树脂不但涂膜性能优良而且成本低廉,因此UPR涂料在涂料工业中应用广泛。文章就现有各种UPR涂料的研究进展进行回顾。将UPR涂料分为气干性UPR涂料、防污UPR涂料、防火UPR涂料、防腐UPR涂料、绝缘UPR涂料以及低(零)挥发性有机化合物(VOC)排放UPR涂料。分别阐述了各种涂料的特点及其发展现状,简要叙述了涂料的作用机理,并对UPR涂料的未来发展趋势和研究方向作出了展望。     

不饱和聚酯树脂的阻燃改性研究

本文用适量的阻燃剂对不饱和聚酯树脂（UP）进行改性，确定了优化的配方和工艺流程，使产品具有良好的阻燃性能（氧指数越过31％）、力学性能（抗拉伸强度没有明显降低），该项研究拓宽了不饱和聚酯树脂的应用领域。     

低苯乙烯不饱和聚酯树脂开发

综述了不饱和聚酯树脂中的各种交联剂，降低苯乙烯散发的途径及国外UPR制造商成功开发的几种低苯乙烯树脂，指出环保型低苯惭烯不饱和聚酯树脂的研制开发将是我国今后的发展方向与重要的研究领域。     

Synthesis and Characterization of a Novel Low‐Viscosity Unsaturated Hyperbranched Polyester Resin

Hyperbranched thermosetting resin is the best additive for toughening and reinforcing linear thermosetting resin. A novel low‐viscosity unsaturated hyperbranched polyester resin (UHPR) is synthesized by the reaction between maleic anhydride monoisooctyl alcohol ester and a hydroxyl‐ended hyperbranched polyester resin (HPR) prepared from phthalic anhydride (PA) and trimethylolpropane (TMP). The structure of HPR is characterized by FT‐IR and ¹H NMR, and its degree of branching is deduced by comparing with the ¹H NMR spectrum of a model compound. The molecular weights of HPR and UHPR are determined by theoretical calculation and MALDI‐TOF MS measurements. This low‐viscosity (< 10 000 cP) novel UHPR can be applied in the field of environment‐friendly coatings and in toughening and reinforcing linear unsaturated polymers.     

改性不饱和聚酯树脂的机械性能

叙述了在不饱和聚酯树脂(以下简称UP)的配方设计中,通过调节树脂的组分和添加剂以满足产品特定的要求,包括机械性能。     

Blends of Natural Rubber with Unsaturated Polyester Resin

The effect of modifying natural rubber (NR) using unsaturated polyester resin (UPR), by compounding on a two-roll mill, is investigated in this study. Both commercial resin and resins prepared in the laboratory under controlled conditions have been employed. After testing several possible catalyst systems, the benzoyl peroxide/dimethyl aniline (BPO/DMA) system was identified as a suitable catalyst system for UPR for blending with NR. The extent of unsaturation in the UPR influences the physical properties of the blend negatively. The UPR is found to have a positive effect on the aging properties of natural rubber.     

双环戊二烯合成改性不饱和聚酯表观性能研究

利用加成水解法合成了双环戊二烯型不饱和聚酯树脂,试验了各工艺条件对所得产品性能的影响。结果表明,DCPD分批加入比一次性加入效果更好．加入时间控制在1h左右为佳,最佳缩聚时间为1．5h;以1,2-丙二醇为二元醇最为理想,当n（DCPD）：n（醇）：n（酸）=6．0：6．2：17时树脂的表观性能最好,己二酸合成的树脂的柔韧性最好。改性型不饱和聚酯比通用型粘度小、流动性好,方便于玻璃钢制品的制作;良好的透明性适合制作水晶等装饰品.