New type polyurethane castor castor industry to develop

Pu castor is mainly used in welded vehicle manufacturing, logistics, automation, mechanical industry, warehouse sorting, etc. Caster wheel tires made of has the excellent dynamic mechanical properties of polyurethane materials, and the wheel support good adhesion, high wear resistance, low endogenous heat, compression deformation resistance, high temperature resistance, rolling resistance is small, is helpful to realize flexible feet. The advantage of pu castor features: 1, low rolling resistance, good steering flexibility; 2, high wear resistance, good tensile performance, long service life. 3, hydrolysis resistance, high temperature resistant, oil resistant; 4, low endogenous heat, high overloading, compression deformation resistance. Polyurethane casters to help new castor industry developing in logistics transportation equipment, polyurethane casters because of their excellent high wear resistance, tear resistance, resist the corrosion of the oil lubricating oil, can prolong the service life, maintenance cost is reduced greatly. At the same time, the NDI polyurethane can hydrolysis resistance, resistance to mold and uv and ozone, in all kinds of high temperature and wet, long-term sun exposure, exposure in the harsh conditions of the oil can maintain stable performance. Pu castor package color there are many kinds of rubber products, mainly according to customer requirements. It is in use process, often appear yellowing phenomenon, which is caused by the affected by external oxidation factors, greatly affect the aesthetics of the product, rubber products and yellow bag is hard to find the problems, so we have to solve and prevent from the root. Here, a simple introduction for everybody solution to pu castor encapsulates the yellow. 1, hot pressing temperature control, prevent heat aging. 2, add promoter for ammonia ester castor plastic bags. Promoter can use DM and M to achieve yellowing level 4, but the system need to be adjusted. With resistance to yellowing promoter as dithiocarbamate salts are good for yellowing, but sacrifice a great deal of property and operations. The faster the curing rate, the less chance the chain scission, acquired inhibit aging degree. But at the same time at the expense of the comprehensive physical properties. Because of fast curing and slow sulfide generated crosslinking key is different. Such as pull apart are affected by a lot of. But the elastic brittle will increase. 3, should be slightly less sulfur, the more to the point of is sulfide, broken, cause yellowing. 4, the use of oil, add less, especially the more can not be added to the chain alkyl polyurethane used plastic bags, because of poor compatibility, as well as on the surface of the oil spill to dissolve in oil additives are also brought to the surface. 5, the control of heavy metal, such as, zinc oxide, light calcium, how much oil contain heavy metals. If the heavy metal content is high, the heavy metals will produce oxidation and discoloration, yellowing easily happened. 6, ph adjustment. Ammonia ester castor encapsulates the weak acid, can have slight inhibitory effect on curing reaction, also control the broken chain. To sum up, many aspects of ammonia ester castor encapsulates the processing production produces yellowing phenomenon, we can according to the quality control of the above methods in processing technology, make its physical and mechanical performance is stable, thereby gaining the right to improve. Install casters in some mobile shelves can easily move them, castor has a variety of categories, such as nylon caster wheel, rubber and polyurethane casters, and so on. So, what is the difference between pu castor with rubber casters? 1, load heavy rubber caster wheel load in 300 & ndash; 400 kg, tear resistance and tear resistance is poor. Pu castor carrying capacity is about 2 times the size of rubber wheel, pu castor has excellent resistance to crack growth, tearing resistance and oxidation resistance impellers in performance and wearability. 2, ground mark rubber wheel, in use process is easy to make carbon black mark on the ground. The basic chemical composition of polyurethane material determines the polyester castor won't leave print on the ground, even the wheels of the colorful will not left any stain mark on the surface of the ground. 3, ageing resistance rubber casters long time contact with organic solvent, prone to swelling phenomenon, tensile strength and the metal shed ability to collapse resistance can also be reduced. Pu castor even if its long-term exposure to these solvents, various performance will remain the same, also won't corrode the wheels. 4, hardness and resilience rubber wheel Shao Er usually in the 67 - type A hardness 75 degrees, hardness is relatively low. Pu castor hardness up to 83 - 95 degrees. Premise in terms of safety, the use of polyurethane casters, can not only guarantee the buffering capacity, at the same time carrying large, rolling resistance is small, and the wheels of the polyurethane material hardness and resilience, can be adjusted according to customer's requirements and the use of the environment. 5, castor raw material rubber wheel production pollution, low production efficiency, material can be mixed reworked material, and have peculiar smell. Pu castor wheel surface the demand is higher, use of raw materials, no peculiar smell, and can't be doped reworked material.