Types of styrene butadiene rubber

Emulsion styrene-butadiene rubber

Emulsion styrene butadiene rubber is the most widely consumed rubber in synthetic rubber. Emulsion styrene butadiene rubber products are divided into general and special varieties.General varieties 1000, 1500, 1600, 1700, 1800 and 1900 in total 6 series, its brand as many as hundreds of kinds.Special varieties include liquid styrene butadiene rubber, high styrene butadiene rubber, butadiene butadiene rubber and carboxyl butadiene butadiene rubber.

SBR-1500 is the most typical type of general contaminated soft emulsion polystyrene butadiene rubber. It has good adhesion and processing properties, and the vulcanized rubber has good wear resistance, tensile strength, tear strength and aging resistance.SBR-1500 is widely used in carbon black as reinforcing agent and the color requirements are not high, such as tire tread, tire tread, conveyor belt, rubber hose, molded products and pressed products.

Solubilized styrene butadiene rubber

Soluble poly styrene butadiene rubber has wear-resisting, cold resistant, low heat, low shrinkage, good color, ash content, high purity and less curing the advantages of fast speed, and with a small rolling resistance, resistance to wet and wear-resisting performance advantages, such as in the tire industry, especially the green tire, antiskid tyre, ultra-low weight tires has wide applications such as high-performance tires.In addition, because of its good touch, good weather resistance, good resilience and small permanent deformation, it can be used to make raincoats, felt, windcoats and air mattresses, as well as sponge materials with uniform foaming and dense structure.Because of its good roller operation, pressure ductility, wear resistance and high filling ability, soluble styrene butadiene rubber is also widely used in the footwear industry. The shoes made with it have the characteristics of bright color, good tactile feeling, smooth surface, clear pattern, not easy to walk and moderate hardness.Compared with emulsion styrene butadiene rubber, soluble styrene butadiene rubber has the advantages of strong adaptability of production equipment, variety of rubber, high monomer conversion, small sewage discharge, fewer varieties of polymerization auxiliaries and so on. It is one of the new synthetic rubber varieties that focus on research, development and production at present, and has a broad prospect for development and utilization.

According to the way of polymerization, the polymerization process of dissolved styrene butadiene rubber mainly includes batch polymerization process and continuous polymerization process.According to the solvent recovery method, it can be divided into direct drying method and wet (stripping) drying method.The operation flexibility of the batch process is large, and the switch between different grades is flexible.Compared with the batch process, the continuous process has the advantages of lower material consumption, higher production efficiency and stable product quality, which represents the development direction of the synthesis process of lithium-series polymers such as dissolved styrene butadiene rubber.With the increasing market demand of SBR continuous polymerization technology with more economic and technical advantages will become more and more important in the production of SBR.