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聚醚     
相关语句
  polyether
     Thermoregulated Polyether Ionic Liquid and Its Applications in Transition Metal Catalysis
     温控聚醚离子液体两相体系及其在过渡金属催化中的应用
短句来源
     Study on Modification, Morphology and Properties of Polyether Polyurethane(Urea)
     聚醚型聚氨酯(脲)弹性体的改性、形态结构及性能研究
短句来源
     Study on High-Pressure Crystallization Behaviors of Aromatic Polyester, Polyester Blends and Polyether
     结晶性芳香聚酯、聚酯共混物及聚醚高压结晶行为研究
短句来源
     SYNTHESIS OF POLYESTER-POLYETHER SEGMENTED COPOLYMERS FROM POLYETHER WITH ACETOXYL END GROUPS
     从端乙酰氧基聚醚合成聚酯-聚醚多嵌段共聚物
短句来源
     STUDIES ON THE POLYETHER ANTIBIOTIC 61477 Ⅰ. TAXONOMICAL AND FERMENTATION STUDIES OF ANTIBIOTIC PRODUCED BY STREPTOMYCES STRAIN 61477.
     聚醚类抗生素61477的研究 Ⅰ.链霉菌61477菌株的分类鉴定与发酵研究
短句来源
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  polyether polyols
     It is found that the optimum formulation(mass) is polyether polyols(average functionality ≈ 4) 100 parts,mixed delay catalyst YC-1 0.8 parts,water 0.6 ̄1.0 parts,physical foaming agent 5 ̄8 parts,foam stabilizer B8870 1.0 ̄ 2.0 parts; the isocyanate index is 1.05 ̄1.15;
     得出较佳配方(质量份)为:聚醚多元醇(平均官能度4左右)100,复配延迟催化剂YC-10.8,水0.6 ̄1.0,物理发泡剂5 ̄8,泡沫稳定剂B88701.0 ̄2.0,异氰酸酯指数1.05 ̄1.15;
短句来源
     Study on Rheology of Carbon Black/Polyether Polyols
     炭黑/聚醚多元醇体系流变研究
短句来源
     REMOVAL OF K~+ AND Na~+ FROM POLYETHER POLYOLS BY ADSORPTION
     吸附法脱除聚醚多元醇中的K~+及Na~+
短句来源
     In comparison with unmodified epoxy resin,the impart strength of modified epoxy resin by FH type polyether polyols has increased by124%,the fracture toughness ratio by89%,and the fracture energy ratio by260%.
     与未改性的环氧树脂相比 ,用FH聚醚多元醇改性环氧树脂的冲击强度增加124 % ,断裂韧性比增加89 % ,断裂能比增加260 %
短句来源
     The experimental results showed that the relation between temperature and viscosity of polyether polyols agreed with the Arrhenius formula, and the flow activation energy of the polyether polyols was 51.4kJ/mol;
     结果表明:聚醚多元醇的粘度与温度的关系符合Arrhenius公式,粘流活化能为51·4kJ/mol;
短句来源
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  polyether polyol
     The viscosity of polyether polyol at 25℃ is 3500 - 4400 mPa's, theoretical functionality is 5. 6 - 6. 4, hydroxyl value is 500 mgKOH/g approximately.
     该聚醚多元醇25℃粘度为3500~4400mPa· s,理论官能度为5.6~6.4,羟值约为500mgKOH/g。
短句来源
     The optimum reaction conditions are reaction temperature of (80±5)℃,prepolymerization time of 1.5 ̄2h,water mass fraction of <0.05% in polyether polyol,molar ratio of NCO to OH of 1.00 ̄1.03,post curing time ≥4h.
     较佳反应条件为:反应温度为(80±5)℃,预聚反应时间1.5 ̄2h。 聚醚多元醇含水质量分数<0.05%,NCO与OH摩尔比1.00 ̄1.03,后熟化时间≥4h。
短句来源
     The properties of a flexible polyurethane foam made from the graft polyether polyol and conventional soft polyether 3010 (mass ratio 50/50) and other material are below: density 27 kg/m 3, tensile strength 128 kPa, tear strength 175 N/m, compression load (at 65% ILD) 598 N/(0.0323 m 2), elongation 107%, rebound 27%.
     用接枝聚醚聚醚 30 10以 5 0 / 5 0质量比制得的密度为 2 7kg/m3 的块泡 ,65 %ILD为 5 98N/ (0 .0 32 3m2 ) ,拉伸强度 12 8kPa ,撕裂强度为 175N/m ,伸长率 10 7% ,回弹率 2 7%。
短句来源
     The result shows that,the foam plastic prepared with coordinate mix of polyol including polyether polyol OH value(410±30) mgKOH/g and OH value (450±30) mgKOH/g,and polyester polyol OH value(400±30) mgKOH/g has better density and compressive strength and meets the requirement of multifunction sandwich production.
     结果表明,用羟值为(410±30)mgKOH/g和(450±30)mgKOH/g的聚醚多元醇与羟值为(400±30)mgKOH/g的聚酯多元醇配合使用,制得的泡沫塑料密度和压缩强度较好,符合多功能复合板材生产要求;
短句来源
     The results show that a polyether polyol with good physical properties is obtained when starting temperature is about 130℃, mass fraction of catalyst DMC is 30 × 10-6 and starting pressure of PO is low.
     结果表明,起始温度在130℃左右、催化剂质量分数为30×10~(-6)、PO起始压力较低时,得到的聚醚物性较好。
短句来源
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  polyether-polyol
     The polyether type polyurethane elastomers based on polyether-polyol, 4,4'-diphenylmethane diisocyanate and 1,4- butanediol were synthesized.
     以聚醚多元醇、4,4'-二苯基甲烷二异氰酸酯和1,4-丁二醇为原料合成了聚醚型聚氨酯弹性体。
短句来源
     The Factors that Influence Synthesis of Polyether-Polyol Polyurethane Prepolymer
     影响聚醚型聚氨酯预聚体合成的因素
短句来源
     Study on Mechanical Properties of Polyether-polyol Type PU Elastomer
     聚醚型聚氨酯弹性体力学性能的研究
短句来源
     Synthesis of polyether-polyol type polyurethane elastomer by quasi-prepolymer method
     半预聚体法合成聚醚型聚氨酯弹性体
短句来源
     Weight loss of the PU was monitored gravimetrically along with time changing, tensile properties monitored as a function of degradation time that indicated the modified PU could be degraded, when the weight ratio of polyether-polyol and lactic acid was 1.25, and the temperature is 80 the sample became fragments and lost the properties of utilization after 50 hours of degradation in water.
     热分解温度随体系中乳酸含量的增加而下降; 但其降解性却随乳酸的加入而明显改善,降解对材料的重量和力学性能均产生影响,当聚醚2000与乳酸重量比为1.25/1,80℃条件下,降解50h已完全破碎,丧失使用性能,并通过SEM验证了降解性能。
短句来源
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  polyether
Hydrogen bonds between surface silanol groups and oxygen atoms of the polyether ring of the crown ether play an important role in the immobilization of the reagent.
      
Electrochemical properties of membranes based on macrocyclic compounds containing two sulfur atoms in a polyether ring were studied.
      
The electrochemical properties of membranes based on dibenzo-crown ethers bearing hydroxyl and chloromethyl groups in polyether rings were studied.
      
Selective Oxidation of Ethylbenzene by Molecular Oxygen: Effect of Macrocyclic 18-Crown-6 Polyether Additives on Catalysis by Bi
      
The catalytic activity of the two-component catalytic system based on nickel bis(enaminoacetonate) (enamac) and 18-crown-6 (18C6) macrocyclic polyether is studied in ethylbenzene oxidation by molecular oxygen.
      
更多          
  polyether polyols
These copolymers were prepared via direct polycondensation reaction of an aromatic diacid based on L-leucine (1), 4,4'-methylene-bis-(4-phenylisocyanate) (MDI) (2) and different polyether polyols.
      
Two kinds of polyether polyols were synthesized by the DMC catalysts.
      
High-resolution 13C?NMR and 1H?NMR spectra were employed to identify the sequence and stereoirregular structure of the polyether polyols.
      
The results showed that head-tail addition and a random stereoirregular structure were dominant in the microstructure of the polyether polyols which were made by DMC catalysts.
      
Phase separation in segmented polyurethanes derived from mixtures of polyether polyols with different functionality
      
更多          
  polyether polyol
The results show that the viscosity of polyether polyol increases exponentially from 62 mPa·s to 6 000 mPa·s with the increase of functionality from 2 to 5.6, respectively.
      
This decrease in bond strength is due to a change in the OH number of the polyether polyol used.
      
Highly oil-absorbent polyurethane foam (PUF) materials were obtained by polymerizing polyether polyol mixture and carbodiimide-modified d-methyl diisocyanate in a weight ratio of 10:2.
      
Two tetrafunctional poly-isocyanate energetic curing agents with different molecular weight (EO03-1 and EO03-3) were synthesized via reaction of azido polyether polyol with hexamethylene diisocyanate (HDI).
      
PCS is based on the synthesis of a hydrophilic polyether polyol and a polyisocyanate to the isocyanate-pre-polymer.
      
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