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It happened that there are a lot of people don't understand the use of pu castor skills

It happened that there are a lot of people don't understand is a use of the polyurethane casters, a number of physical and mechanical performance indexes can be adjusted through the selection of raw materials and formulations, within a certain range of change, to meet the different requirements of users on the product performance. Such as hardness, is often the user an important index of products, polyurethane elastomer can be made into Shao Er A hardness of the 20 or so soft printing rubber roller, and can be made more than 70 Shao Er D rigidity rolling roller, this is the general elastomer material is difficult to do. Polyurethane elastomer is composed of many flexible chain segment and rigid chain segments of the polarity of polymer materials, with the improvement of rigid chain segment ratio and the increase of density of polar group, elastomer original strength and hardness will be increased accordingly. Its flow components through a large amount of sediment scouring metal ring and skirts, in less than a few hundred hours serious wear is leaking, and use the mouth of the polyurethane elastomer coating is the continuous running 1800 small ring and skirts into still not wear. Other rice huller rubber roller, such as milling, coal preparation with sieve sieve plate, stadium track the runway, forklift truck crane dynamic oil seal, elevator wheels and wheel roller skates, etc are also polyurethane elastomer. Need to mention here is that to improve the low and middle hardness, the friction coefficient of polyurethane elastomer parts, improve the bearing under the load of wear-resisting performance, can add a small amount of sulfide in this type of polyurethane elastomer aluminum and graphite or silicone oil lubricant. Easy burning, light plastic, uniform surface melt during burning, and viscous filaments. Nylon is not easy to burning, burning with the smell of burning hair, after burning surface of the bubble, and viscous filaments. High temperature nylon PA combustion status with PA material, but after burning surface of white powder. Pu yi burning, burning light white smoke from time to tome, easy to melt, without stimulating smell, sticky filaments. Polyvinyl chloride (PVC) combustion, the combustion with a thick black smoke, have a pungent odor, non sticky filaments, after burning surface of black carbon powder. It happened that there are a lot of people don't understand the use of pu castor skills, more news and information about pu castor please click: hynews / 254. html

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