国产CR-244粘结型氯丁橡胶性能及加工应用

介绍了国产CR－244型氯丁橡胶技术性能和加工应用技术。其中的可接枝CR-244将是氯丁胶粘剂行业很有潜力的新产品。     

国产CR－244粘结型氯丁橡胶性能及加工应用

介绍了国产CR－244型氯丁橡胶技术性能和加工应用技术。其中可接枝的CR－244将是氯丁胶粘结剂行业很有潜力的新产品，该产品的工业化生产改善了国产CR－244不能与MMA接枝的缺陷。接枝共聚合的胶粘剂技术性能达到GB7126－86标准要求，接枝效果与A90相近。     

水相法氯化橡胶的性能试验

通过选用3种黏度相近的氯化橡胶产品：CR-2水相法氯化橡胶、KL-10国产溶剂法氯化橡胶及GW—10进口溶剂法氯化橡胶，进行对比试验，检测了3种产品的常规性能，分析了红外光谱，并分别进行了配漆试验。结果表明：水相法氯化橡胶的质量指标达到了溶剂型氯化橡胶产品的质量指标，热稳定性优于国产溶剂型氯化橡胶产品，与进口产品性能相当；配制成涂料的各项性能符合船舶漆产品的技术要求，稳定性与溶剂型产品相当。     

国产CR与MMA接枝聚合研究

以国产可接枝ＣＲ－２４４胶为接枝本体，用ＭＭＡ对其进行接枝改性制得了性能满意的接技胶粘剂。本工艺的特点：（１）国产可接枝ＣＲ代替Ａ－９０；（２）省去通氮设施；（３）重复性好     

马来酸酐接枝改性聚丙烯流变性能研究

用固相接法制得马来酸酐接枝聚丙烯，接枝率为２％～２．５％（１００ｇＰＰ含马来酸酐的克数），用国产ＸＬＹ－Ⅱ型毛细管流变仪进行了流变性能研究。     

硅丙外墙涂料述评

介绍了有机硅改性丙烯酸酯的方法（如冷拼法,接枝共聚等）。列举了接枝共聚法制备硅丙乳淮的实例,并分析了对聚合反应及乳液性能的影响因素。评价了国产有机硅改性丙烯酸酯乳液的性能。     

CR-39的试制与应用

本文讨论了CR-39单体的聚合工艺,产品性能。并对以CR-39为原料制取光学塑料镜片作了介绍。     

CaCO填充HDPE代替ABS的研究

通过偶联和接枝技术实现了超细ＣａＣＯ３与ＨＤＰＥ的接枝偶联，并在加和阻燃剂后，测定了力学性能和阻燃性。结果表明：偶联与接枝技术均能改善性能；两者协同作用时，填充复合体系力学性能改善最显著；无机和有机溴系阻燃剂在适当比例及用时产生协同作用，能极大地提高阻燃性。     

聚硅氧烷接枝共聚物

本文介绍了一些聚硅氧烷的接枝共聚物，它们的合成与普通聚合物类似，接枝共聚技术可用于橡胶，塑料及无机材料的改性，经改性后聚合物溶合了两者的性能，其应用领域进一步扩展。     

聚硅氧烷接枝共聚物

本文介绍了一些聚硅氧烷的接枝共聚物。它们的合成与普通聚合物类似，接枝共聚技术可用于橡胶、塑料及无机材料的改性，经改性后聚合物溶合了两者的性能，其应用领域进一步扩展。     

高强度难燃型输送带粘合剂的研制

选择了一种合适的预反应体系,采用9%自制接枝氯丁胶溶液与氯丁橡胶(A-90)进行配合制成的输送带粘合剂,具有粘接强度高、难燃等特点,在常温常压下固化30min后剥离强度达到145N/2.5cm,能够满足输送带快速粘接的要求。     

溶剂型氯丁胶粘剂的环保化

论述了环保型胶粘剂的基本特点，分析了溶剂型氯丁胶粘剂的毒性与污染来源，提出了溶剂型氯丁胶粘剂环保化的途径，介绍了环保型氯丁胶粘剂的配制原则，指出了溶剂型氯丁胶粘剂的惟一生路是环保化。     

氯丁橡胶胶粘剂的发展方向

从适应环保和可持续发展的要求，氯丁橡胶胶粘剂(以下简称氯丁胶)的发展方向应是实现环保化、加速水性化、推进高固含量化、研究高性能化。分析了溶剂型氯丁胶环保化的途径与可能。论述了水基型氯丁胶的性能与前景。只要注重环保，转变观念，提升技术，氯丁胶就能有旺盛的生命力和强劲的竞争力。     

Behavior of adhesion forces of the aqueous-based polychloroprene adhesive magnetically conditioned

This research is an innovation proposal for magnetic conditioning of the aqueous-based polychloroprene contact adhesive with the purpose of increasing the adherence capacity between the adhesive and the substrate. Today, the aqueous-based polychloroprene contact adhesive presents an adhesion capacity variation between 1.15 and up to 2.75 kgf/cm². On the other hand, the solvent-based polychloroprene adhesives support average tensions of shearing of 3.8 kgf/cm². To promote an increase in adhesion to the aqueous-based polychloroprene contact adhesive, we formulated one adhesive using a nano-additive, carbon dioxide as catalyst, and a magnetic conditioning process before the phase of application on the substrates. The results obtained show an average increase of 292% in the shearing tension of the adhesive magnetically conditioned when compared with an adhesive of same formulation without the magnetic conditioning and when compared to the commercial aqueous-based polichloroprene adhesive, the increase reaches 122%.     

Elastomer adhesives

Some information about the general and specific aspects of polychloroprene contact adhesive composition is given. Reference is made to application viscosity, the chemical and specific adhesive purpose of ingredients and performance related to composition and the method of stress. Some preliminary results, about the study of methods for determining how adhesive films form from complex mixtures are included.     

无苯低毒氯丁胶粘剂的研制

选用多种低毒溶剂组成了氯丁胶粘剂的溶剂体系，选择合适的氯丁橡胶、配合剂和工艺制得一种无苯低毒氯丁胶粘剂，并对其剥离强度、贮存性能等进行了考查。该胶粘剂剥离强度高，常温和低温贮存性能良好，而且有害物质含量远远低于已颁布的《室内装饰装修材料胶粘剂中有害物质限量》的国家标准(GB18583-2001)，值得在应用领域推广。     

CR-244氯丁橡胶及甲苯胶液色泽的改善

笔者从聚合配方和终止剂体系两个方面入手，介绍了改善CR-244氯丁橡胶及甲苯胶液色泽并能保证其抗老化性能的方法。     

The effect of surface properties on the adhesion of modified polychloroprene used as adhesive

The adhesion properties of polychloroprene can be improved by addition of such materials as piperylene–styrene co-polymer (PSC), VeoVa-10 polymer, VeoVa-11/methyl methacrylate/2ethylhexyl acrylate co-polymer (VeoVa-11/MMA/2EHA) and poly(vinyl acetate) waste (wPVAc). Here, the relationship between adhesion properties and surface tension of polychloroprene was investigated. Contact angle measurements have been used to study the effects of nature and content of polymeric additives on the adhesion and surface properties of polychloroprene. Low-surface-tension VeoVa-10 polymer has the tendency to migrate to the surface of polychloroprene; thus, adhesion is determined mainly by this additive property. Enrichment of polychloroprene film bottom layer by the additive was observed using high-surface-tension PSC and wPVAc. In this case, the adhesion properties of polychloroprene depend on the interactions at the interface. Adhesion properties of polychloroprene were found to depend not only on compatibility between adhesive components, but also on compatibility between the adherend and the adhesive.