减少降解的助剂或者扩链剂会有助益。
Additives that reduce degradation or chain extenders that repolymerize degradation components may help.
讨论了常见扩链剂的功能及在聚氯乙烯树脂生产中的应用。
The function of common chain extender and it 's application status in PVC resin production has been discussed.
扩链脲的反应活性基本不受分子中聚乙二醇链段分子量的影响。
Results also showed that the molecular weight of PEG flexible spacers in chain-extended ureas basically had no influence on the reactive activity of the ureas.
剪切流变数据表明：加入一定量扩链剂能够增加熔体的表观粘度。
Shear rheological data showed that the apparent viscosity increased with the addition of a certain amount of chain extenders.
实验采用二异氰酸酯与聚醚二元醇、亲水扩链剂反应合成水性聚氨酯。
In the experiment, di-isocyanate, polyether diol and a hydrophilic chain-extender were used to synthesize aqueous urethane.
扩链剂的存在不是键合剂MAPO提高丁羟推进剂伸长率的必要条件。
The existence of any extender is not necessary for increasing the elongation of HTPB propellants by bonding agent MAPO.
研究了熔体扩链产物的相对分子质量、形态结构、热性能和力学性能。
The molecular weight, morphology, structure, thermal properties and mechanical properties were measured.
考察了扩链剂种类、活性稀释剂及异氰酸酯对聚氨酯灌封胶力学性能的影响。
The effect of kinds of chain extender, active diluents and the structure of isocyanate on mechanical properties of the elastomer is discussed.
用差示扫描量热法(dsc)研究了扩链法制备的高粘度尼龙66的热行为。
Thermal behaviors of high viscosity Nylon 66, prepared by chain extending, have been studied by DSC.
针对具有不同熔体流会指数（MI）的PA材料，得出最佳的扩链剂加入量；
The optimal dosage of chain extender was selected to PA1010 with different melt index (MI);
把扩链剂的使用作为调整丁羟推进剂粘合剂网络及其形态结构的一个重要手段。
The use of chain extenders ACTS as an important way to control the morphological structure of HTPB propellants binder matrix.
扩链剂可以在拉伸强度少量降低的情况下大幅度提高NEPE推进剂的伸长率；
The tensile strength of NEPE propellant had a little decrease but the elongation was significantly increased after adding of the chain extender.
研究了不同硬段结构和硬段含量和扩链剂对其干膜物理机械性能和吸水率的影响。
The effects of hard segment structure, hard segment content and chain extender with different structure on physical mechanical properties of dry films and water absorption were studied.
引入适当的交联剂、扩链剂及键合剂可使GAP推进剂力学性能达到较高的水平。
By adding proper crosslinking agent, chain extender and bonding agent, the mechanical properties of GAP based propellants can be tailored to a higher level.
扩链剂是用来将聚二甲基硅氧烷两端活性较弱的羟基转变为高活性的异氰酸酯基。
The chain extender is used to convert the low-activity hydroxy groups of both ends of the polydimethylsiloxane into high-activity isocyanate groups.
引入适当的交联剂、扩链剂及键合剂可使GAP推进剂力学性能达到较高的水平。
By adding proper crosslinking agent, chain extender and bonding agent, the mechanical properties of GAP based propellants can be tailored to a higher...
扩链剂的用量存在最佳值，用量不足时偶联反应不充分，用量过量时封端反应加剧。
There existed an optimal dosage of the chain extender, lack of which caused deficiency of chain extension and excess of which led to more blocking reaction.
但因扩链剂的加入，在PET 分子链中引入的柔性链段而导致聚合物弹性模量下降。
The addition of the chain-extenders would introduce the flexible segments into recycled PET and resulted in lower modulus of the plastics.
结果表明，不同的低聚物多元醇、多异氰酸酯及扩链剂对聚氨酯力学性能有较大影响；
The results show that the mechanical properties of polyurethane vary with polyol, mulriisocyanate and chain-extender.
提出可通过添加扩链剂、增塑剂、成核剂改性PHA及使用专用油剂来提高其纺丝性能。
Its spinning performance can be improved by modifying PHA with chain extender, plasticizer and nucleating agent and using special finishes.
扩链交联剂能提高聚氨酯制品的综合性能、改善生产工艺、提高制品合格率和生产效率。
The extenders and crosslinkers can improve the comprehensive performance and production techniques, increase the rate of qualified products and production efficiency of polyurethane products.
使用包括1,3 -和1,4 -环己烷二甲醇的扩链剂混合物的低雾度热塑性聚氨酯。
Low haze thermoplastic polyurethane using mixture of chain extenders including 1, 3-and 1, 4-cyclohexanedimethanol.
研究了水性聚氨酯的扩链、交联、丙烯酸酯复合等改性方法以及水性聚氨酯木器漆的研制。
The modification of waterborne polyurethane through chain extending, crosslinking and compounding with acrylate was studied. The aqueous polyurethane wood paint was also prepared.
借助扩链剂与PET的反应，形成该材料的三维网络结构，同时保留吹瓶加工时的有序结构。
Via the reaction among chain extender and PET chips, three-dimension network was formed and the crystal structure in the bottle blowing process was maintained in the new blends.
以BDO扩链为例，随其用量的增加，弹性体的性能提高，达到一定值后再增加用量性能反而下降；
With the amount of chain-extender BDO added, the performance of elastomer becomes well, but when the amount of BDO comes to a certain point it appears reverse.
BMI与二元胺扩链后，再与液晶环氧(PHBHQ)共聚，可以有效地提高BMI树脂的冲击强度。
The impact strength of BMI can be improved remarkably by copolymerizing with liquid crystalline epoxy (PHBHQ) after extending chain.
研究了乳酸熔融缩聚和溶剂回流脱水缩聚两种聚合方法及几种扩链剂对乳酸聚合物相对分子质量的影响。
The influence of melt polycondensation and solvent refluxing methods of lactide polymerization and chain extension agents on relative molecular weight of polylactide was studied.
通过对反应程度的测定，获得了扩链产物的相对分子质量，并用渤海油田稠油对其破乳性能进行了评价。
The relative molecular masses of the products are determined by the measurement of reaction degree. The demulsifying performances of them are evaluated with the viscous oil of Bohai Oilfield.
研究了尼龙66样品的特性粘度随扩链剂用量的变化规律，测定了扩链前后端羧基、端氨基含量的变化。
The effects of the amount of chain extender on intrinsic viscosity of nylon 66 was studied and the content of end groups was measured.
研究了尼龙66样品的特性粘度随扩链剂用量的变化规律，测定了扩链前后端羧基、端氨基含量的变化。
The effects of the amount of chain extender on intrinsic viscosity of nylon 66 was studied and the content of end groups was measured.
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