The tensile strength of NEPE propellant had a little decrease but the elongation was significantly increased after adding of the chain extender.
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 chain extender is used to convert the low-activity hydroxy groups of both ends of the polydimethylsiloxane into high-activity isocyanate groups.
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。
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.
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。
The effects of type, concentration of chain extender, curing temperature and time of silicone sealants with low modulus and high elongation on their mechanical properties were studied.
制备了不同低模量高延伸率室温硫化有机硅密封材料,并考察了扩链剂类型和用量、固化温度和时间对材料性能和交联度的影响。
The function of common chain extender and it 's application status in PVC resin production has been discussed.
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 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.
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。
By adding proper crosslinking agent, chain extender and bonding agent, the mechanical properties of GAP based propellants can be tailored to a higher level.
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。
The effect of kinds of chain extender, active diluents and the structure of isocyanate on mechanical properties of the elastomer is discussed.
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。
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.
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;
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.
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。
The polyurethane glue stock used for making draft roll was investigated by using self made chain extender and modifier.
采用自制扩链剂与改性剂,通过对聚合多元醇的品种与分子量的选择,研制出了适合纺织牵伸辊用的聚氨酯胶料。
The polyurethane glue stock used for making draft roll was investigated by using self made chain extender and modifier. The varieties and molecular weight of polyester polyol were selected.
采用自制扩链剂与改性剂,通过对聚合多元醇的品种与分子量的选择,研制出了适合纺织牵伸辊用的聚氨酯胶料。
In the experiment, di-isocyanate, polyether diol and a hydrophilic chain-extender were used to synthesize aqueous urethane.
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。
The results show that the mechanical properties of polyurethane vary with polyol, mulriisocyanate and chain-extender.
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 optimal dosage of chain extender was selected to PA1010 with different melt index (MI);
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;
Securely held by a lobster clasp closure, the pendant also comes with an extender chain.
龙虾搭扣平安保险方便,并配有加长配饰。
By adding proper crosslinking agent, chain extender and bonding agent, the mechanical properties of GAP based propellants can be tailored to a higher...
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。
The results showed it might raise the heat st resistance of casting polyurethane to use the compound chain extender of MOCA ad TMP and quartz powder.
试验结果表明:MOCA与TMP并用作为交联剂及填加无机耐热填料石英粉可提高聚氨酯耐热性。
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 pendant hangs on a brown cotton cord that comes with a rhodium-plated lobster clasp closure and an extender chain.
链坠挂在一条咖啡色的棉绳上。镀白金色龙虾搭扣和一个加长配件。
The pendant hangs on a brown cotton cord that comes with a rhodium-plated lobster clasp closure and an extender chain.
链坠挂在一条咖啡色的棉绳上。镀白金色龙虾搭扣和一个加长配件。
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