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。     

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。     

硅烷偶联剂改性氯丁橡胶胶粘剂耐水性的研究

本文采用可水解的含氨基的硅氧烷改进了氯丁橡胶的耐水性。经改性的氯丁橡胶与增粘剂等并用,可得到具有优异耐水性的胶粘剂。作者借助于扫描电镜、波谱和能谱对该胶粘剂的耐水机理进行了初步探讨;与此同时,还利用透射电镜,研究了该胶粘剂的微观相态结构。     

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%.     

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。     

国产CR—24粘结型氯丁橡胶性能及加工应用

介绍了国产CR-224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-224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。     

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。     

Preparation and Properties of a Waterborne Contact Adhesive Based on Polychloroprene Latex and Styrene-Acrylate Emulsion Blend

Environmental protection and legislative pressure to eliminate the use of solvents in the adhesive industry have inspired the search for safer alternatives. In the area of contact adhesives, the waterborne route has proved to be of particular interest. Based on the synergistic effect of polychloroprene latex and styreneacrylate emulsion, a waterborne contact adhesive consisting of polychloroprene latex (PCL) and styreneacrylate emulsion (SAE) blend has been developed. In order to blend PCL with SAE easily and to accelerate the drying rate of the adhesive, boric acid was chosen for use in the PCL/SAE blend system. Effects of boric acid and SAE content on the properties of PCL/SAE blends, such as pH value, storage stability and set time, were investigated. At the same time, the effect of SAE content on the mechanical properties of PCL/SAE blend films was studied. The morphology of blend films was characterized by Atomic Force Microscopy. The adhesive performance of the waterborne contact adhesive was evaluated by peel and shear tests. The results showed that when the waterborne contact adhesive formulation contained 40 wt% styrene-acrylate emulsion (dry weight) and 1.25 wt% boric acid, it had a good shelf-stability, its set time was 5 min, and the blend film with this formulation was ductile and flexible with reasonably good tensile strength and very high elongation at break. And the blend films showed structure with a sea–island morphology. The waterborne contact adhesives derived from PCL/SAE blends were found to be comparable to the commercially available solvent-based contact adhesives. The synergistic effect of polychloroprene latex and styrene-acrylate copolymer emulsion was also discussed.     

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。     

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.