ptmg

The Global PTMG Production and Its Market Situation

全球PTMG生产和市场形势

Effect of End - closing Rate on Performance of PTMG Polyurethane Plastic Adhesive

封端率对PTMG型聚氨酯胶黏剂性能的影响

Preparation and Application of PTMG NEW PROGRESS ON TECHNOLOGY FOR SYNTHESIS OF GLYCOL ETHERS

聚四氢呋喃醚二醇的合成和应用二醇醚工艺技术的新进展

The mechanical properties of PU elastomer based on PTMG are introduced .

介绍四氢呋喃均聚醚（PTMG）聚氨酯弹性体的力学性能。

PTMG is widely used in the field of chemical industry , for example synthesis PU .

该产品广泛应用于合成聚氨酯、聚氨酯弹性纤维（氨纶）等许多化工产品的生产领域。

PU Elastomer Based on PTMG & Factors Affecting the Mechanical Properties of PTMG-PU

四氢呋喃均聚醚聚氨酯弹性体&影响PTMG-PU力学性能的因素

Study on HTPB / PTMG Polyurethane Elastomers

HTPB/PTMG聚氨酯弹性体的研究

The recycled Polytetrahydrofuran ( PTMG ) can be obtained from the glycolysis product .

醇解反应主要以氨酯键断裂方式进行，从降解产物上层分离物中可回收聚四氢呋喃（PTMG）。

The recycled polyurethane film has been synthesized by mixing the degraded product with fresh PTMG and then reacting with TDI .

降解产物与新鲜的分子量为2000的PTMG混合，然后加入TDI进行反应，可制成再生聚氨酯薄膜。

The synthesis of polyoxytetramethylene glycol ( PTMG ) from tetrahydrofuran was investigated , using fuming sulfuric acid as catalyst .

本工作以四氢呋喃为原料、发烟硫酸为催化剂合成了聚四甲撑二醇（PTMG）。

The results indicated that the elastomer of PTMG / MDI / DMTDA by quasi-propolymer process had good mechanical and technological properties .

结果表明，采用PTMG/MDI/DMTDA半预聚物法制备的弹性体具有优良的物理性能及工艺性能。

The results showed that high mechanical properties and transparent properties were available by raising slightly NCO / OH ratio and the appropriate 1,4 - BD / PTMG ratio .

结果表明：NCO/OH摩尔比略大于1，适当的1,4-BD与PTMG比例能获得力学、光学性能优良的PU胶粘剂。

Dynamical mechanical properties analysis ( DMA ) revealed that the heat generation also decreased with increasing HTPB / PTMG mass ratio , and the microphase separation weakened .

动态力学性能测试研究表明，HTPB／PTMG质量比的提高使聚氨酯弹性体动态内生热依次降低，微相分离程度减弱。

The results showed that the comprehensive properties of PU synthesized with PTMG were excellent , so PTMG was chosen to synthesize aqueous PU finishing agents .

研究结果表明：PTMG型的水性聚氨酯综合性能较好。

The influences of reaction conditions such as reaction time , reaction temperature , ratios of reactants , etc on the purity of the recycled PTMG are discussed by FTIR measurements .

应用FTIR分析，研究了反应温度、反应时间、反应物比例、催化剂加入量等不同反应条件对回收PTMG纯度的影响。

The results showed that the tire model of PU with 80 ~ 90 ° Shore A hardness and using PTMG as soft segment and TDI-MOCA as hard segment respectively featured good heat resistance ;

结果表明，以PTMG为软段、TDIMOCA为硬段、邵尔A型硬度为80～90度之间的聚氨酯弹性体模型负重轮具有良好的耐热性能。

A series of siloxane-containing polyurethanes were synthesized using polytetramethylene ether glycol ( PTMG ) and hydroxyl terminated polydimethylsiloxane ( PDMS ) as mixed soft segments .

以末端基为羟基的聚二甲基硅氧烷（PDMS）与聚四甲基醚二醇（PTMG）为混合软段合成出一系列含硅氧烷的聚氨酯弹性体。

Medical thermoplastic polyether urethanes ( TPU ) based on MDI / PTMG / BDO system were prepared by one-shot , prepolymer and semi-prepolymer processes with equivalent stoichiometries respectively .

在系统中，以一步法和预聚法为对照，研究了半预聚法对医用热塑性聚氨酯（TPU）结构和性能影响。

The proportion of soft and hard segment in PTMG / PU , solvent , soft segment molecular weight , dosage of expanding - chain agent and influence of AKD content to emulsion stability and sizability were studied .

研究了PTMG/PU中软硬段比例、溶剂、软段相对分子质量、扩链剂用量、AKD含量对乳液稳定性和施胶性的影响。

The result shows that in the PU elastomer the Tg of polyester soft segment is higher than that of polyether soft segment , the elastic modulus increases in the order of PPG , PEG , PTMG .

结果表明，在PU弹性体中，聚酯软段比聚醚软段的Tg高，弹性模量按PPG、PEG、PTMG软段顺序增加。

The thermoplastic polyester-ether elastomer ( TPEE ) was synthesized with dimethyl terephthalate ( DMT ), 1,4-butylene-glycol ( BG ), polytetrahydrofuran ( PTMG ) as raw materials .

以对苯二甲酸二甲酯（DMT）、1,4-丁二醇（BG）、聚四氢呋喃（PTMG）为主要原料，合成热塑性聚酯弹性体（TPEE）。

The polyamide-polyether multiblock copolymers are the kind of Nylon block copolymers which consist of crystallizable aliphatic polyamide ( PA ) as hard segments and amorphous aliphatic polyether ( PTMG ) as soft segments .

聚酰胺-聚醚多嵌段共聚物是以结晶型饱和脂肪聚酰胺为硬链段（PA）和无定型脂肪聚醚（PTMG）为软链段的一种尼龙多嵌段共聚物。

The reactive polyurethane hot-melt adhesive was synthesized by using polytetramethylene glycol ( PTMG ), methylene-4,4 ' - diphenylene diisocyanate ( MDI ) and ethylene-vinyl acetate copolymer ( EVA ) as main raw materials .

以聚四氢呋喃二醇（PTMG）、二苯基甲烷4,4'-二异氰酸酯（MDI）和乙烯-醋酸乙烯共聚物（EVA）为主要原料合成了反应性聚氨酯热熔胶。

Aqueous polyurethane emulsion was prepared with polyoxytetramethylene glycol ( PTMG ) , isophorone diisocyanate ( IPDI ), dimethylol propionic acid ( DMPA ) and ethylene diamine ( EDA ) as primary materials .

以聚四氢呋喃醚二醇（PTMG）、异氟尔酮二异氰酸酯（IPDI）、亲水单体二羟甲基丙酸（DMPA），乙二胺为主要原料，制备了稳定的水性聚氨酯乳液。

The minimal flux and the maximal flux occurred at the DMAc concentration of75 % and95 % respectively . The pure water fluxes and microstructures of PVC hollow fiber membranes were improved by adding PTFE and PTMG separately to casting solution .

d铸膜液中单独添加PTFE或PTMG只能分别改善PVC中空纤维超滤膜的纯水通量或微观结构，同时加入二者可以得到膜结构和纯水通量都较好的超滤膜。

A kind of cationic waterborne polyurethane dispersion was synthesized by isophorone diisocyanate ( IPDI ), polytetrahydrofuran ( PTMG ), and N-methyl diethanolamine ( MDEA ) . Its dissociative NCO during preparation were measured .

以异佛尔酮二异氰酸酯（IPDI），聚四氢呋喃醚二醇（PTMG）和N-甲基二乙醇胺（MDEA）为主要原料合成了阳离子水性聚氨酯分散液，并对合成过程中游离NCO基含量进行了测定。

Polyurethane coating having waterproof function and moisture permeation was synthesized by the pre-polymerization of mixed polyols from ( PEA , PTMG and PPG ) / PEG with MDI , followed by the chain extension with 1,4-butylene glycol .

以（PEA、PTMG、PPG）/PEG混合多元醇作为聚醚二醇组分与MDI进行预聚，然后用1,4-丁二醇扩链合成具有防水、透湿性的聚氨酯涂层剂。

The influence of chemical structure factors on mechanical properties of PU elastomer is discussed . The factors include relative molecular mass of PTMG , diisocyanates , chain extenders , mass fraction of hard segment , NCO mass fraction and chemical crosslink in prepolymer , etc.

讨论了化学结构因素对聚氨酯弹性体力学性能的影响，化学结构因素包括PTMG相对分子质量、二异氰酸酯、扩链剂、硬段质量分数、预聚体NCO基质量分数和化学交联等。

With the increasing of the mass ratio of HTPB / PTMG , the loss of mechanical properties of PU elastomers prepared by prepolymer method is less than that by the improved one-step method , and that of the latter is less than that by the one-step method .

随HTPB／PTMG质量比加大，预聚体法制备的聚氨酯弹性体的力学性能的下降幅度小于改进的一步法，改进的一步法小于原一步法。

The novel points of the article contain three aspects in the following : ( 1 ) With thiol sealing end polysulfide , poly tetrahydrofuran ether ( PTMG ), diphenyl methane diisocyanate ( MDI ) as raw materials , to prepare polysulfide-based polyurethane composite material .

本研究的新颖点主要包含以下三方面：（1）以巯基封端聚硫橡胶（PS）、聚四氢呋喃醚（PTMG）、二苯基甲烷二异氰酸酯（MDI）为原料，合成聚硫聚氨酯复合材料。