The densities , melting points and crystallinities of the copolymers were decreased compared to those of polyethylene under the same experiment conditions 所得共聚产物的密度、熔点和结晶度与相同反应条件下乙烯均聚产物相比下降。
In this paper , the crystallinity of pvc modified by homemade nucleating agent and heat treatment was increased . the maximum crystallinity reached 12 % 采用自制的成核剂对pvc进行喷液处理和热处理的各种改性，提高了pvc的结晶度，使pvc的结晶度达到了12 。
The crystallinity reach its peak when the content of epoxy is 1 % , with the increase of epoxy resin content , the crystallinity of nylon 11 alloy decreases 环氧树脂用量为1时，尼龙11共混合金体系的结晶度最大，此后随着环氧树脂的加入，尼龙11结晶度随之降低。
This structure results in very high levels of crystallinity to be achieved . these systems have been ideal models for polymer crystallization and morphological control 此外由于其高结晶度、高旋光纯度以及不含催化剂等特性，也是研究高分子结晶行为的良好模型对象。
The effects of reaction conditions ( solvent , reaction temperature and time , surfactant ) on purity , size , and morphology of the resulting products were studied 研究了反应条件(所用溶剂、反应温度、保温时间和表面活性剂等)对产物尺寸、形貌、纯度和结晶度的作用和影响。
Dsc and x - ray diffraction results show that after pan - milling , the crystallinity and the size of micro crystals of pa6 decrease . melting point increases and crystallization temperature decreases 表现为结晶度降低，微晶尺寸减小；熔融温度降低，结晶温度升高；球晶尺寸减小。
From ambient to 500 when the heat treatment temperature increases , the crystallinity of the film increases , which enhances the degradation ability of the films on the methyl orange 热处理温度在室温550oc范围内，随着热处理温度的增加，薄膜结晶度增大，薄膜降解甲基橙的性能增强。
High - performance carbon fibers must have few voids , few score region , and they also have more graphite layers which regularly piled up and highly oriented 提高碳元素的含量，提高结晶度，减少甚至消除皮芯结构，减少孔洞，从微观上提高石墨层的取向和堆叠程度是获得高性能碳纤维的必要条件。
Nano - sio2 acted as the nucleation agent in pp , and greatly upgrading the crystal temperature , nucleation rate and crystallinity when 1 % ~ 5 % nano - sio2 by weight was added 在纳米sio _ 2含量为1 5份时， pp的结晶温度以及结晶速率随着含量的增加而增加；结晶度随着纳米sio _ 2 ，粒子的含量先增加然后下降。
Two exceptional structures appear in the film . they are concentric ring of si and hollow ring of c . the former is composed of three parts : the outer belt , the medium and the heart 当退火温度升高到600后，薄膜的结晶度继续增加到60 70 ，晶粒继续长大，并发现了两种异常的结构：同心环和空心环。
