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And the time-dependent changes in molecular weights during the thermal degradation followed the kinetic model of random chain scission at ester groups. 对苯胺基POSS (OAPS)和异丁基POSS(OIBS)的进一步研究表明，由于与基体的作用不同，OAPS 可使结晶峰变尖，球晶细化，在一定程度上提高聚合物的力学性能和热稳定性，改性效果优于OIBS。
Keywords PET,microwave radiation,green chemistry,random chain scission mechanism,activation energy; 微波;绿色化学;无规解聚;活化能;
random chain scission 链无规则断裂
The reaction of chain scission is first-order reaction. 白油的断链为一级反应。
This derivation is only valid if no chain scission accompanies crosslinking. 这一关系式仅适用于交联时不伴有断链发生的情况。
This derivation is only valid if no chain scission accompanies cross linking. 这一关系式仅适用于交联时不伴有断链发生的情况。
The results show that chain scission and oxidation occurr in the whole reaction. 研究表明,白油在热氧老化过程中主要发生断链和氧化反应。
That means that in order to retain good properties and control Mooney viscosity of the products, this mixture chain scission system is preferred. 因此采用该体系可以达到在不影响产品性能的前提下;控制门尼粘度的目的.
The dependence of chain scission and racemization on temperature results from molecular motion, "cage effect" and steric hindrance during recombination. 分子量降低和消旋作用对温度的依赖性,是由于分子运动和笼罩效应以及重合的空间位阻效应所致。
With addition of different addition agents, the thermal oxidation processes of white oil were studied similarly.The results show the addition agent can inhibit chain scission and oxidation of wh... 在白油中加入多种不同类型添加剂,可以发现,白油的分解、断链和氧化均有不同程度的减弱。
Duo to the coexistence of chains scission and crosslinking, viscosity for PA66 increases to 50%, but for PP and PBT the viscosity number decrease much. 使制品变脆,机械性能严重下降;由于交联和断链并存,老化后PA66的粘数上升,而PP和PBT的粘数下降。
Soiled dishes were piled at random. 脏碟子胡乱地堆放着。
The librarian took a book at random from the shelf. 图书管理员从书架上随便拿了一本书。
Random mating within a breeding population. 自由交配在一个育种群中自由交配
This derivation is only valid if no chain scission accompanies cross linking 这一关系式仅适用于交联时不伴有断链发生的情况。
The chain has fallen foul of plants in the water. 链条已和水中的植物缠绕在了一起。
She has a gold chain about her neck. 她在脖子的周围挂着一根金项链。
Chose a card at random from the deck. 从一副牌中任意选出一张
By mere chance or fortune; at random. 碰巧; 胡乱地; 随意地
The chain has run foul of some plants in the water. 铁链缠在水中的一些植物上。