Application of ultra high molecular weight polyethylene
UHMWPE, known as ultra-high Molecular weight polyethylene(UHMWPE for short), is a linear polyethylene with a molecular weight of more than 1.5 million without branched chains. Molecular formula: -- (-- CH2-CH2 --) -- N --, density: 0.920 ~ 0.964g/cm3. Thermal deformation temperature (0.46mpa)85℃, melting point 130 ~ 136℃.
Application:
Due to its many excellent properties, UHMWPE has shown great advantages in the high-performance fiber market, from mooring lines in offshore oil fields to high-performance lightweight composite materials, playing a pivotal role in modern warfare and aviation, aerospace, maritime defense equipment and other fields.
1. Ultra-high molecular weight polyethylene can create the lining of coal, lime, cement, mineral powder, salt, grain and other powdery documents of the bucket, silo, chute, because it has excellent self-lubrication, non-viscosity, can make the powdery documents for storage and transportation facilities do not adhere to the picture, to ensure a stable guarantee.
2. Compared with other pipelines, the outstanding performance of uHMWPE liquid guarantee pipeline used for sand flow is as follows: compared with bamboo tube, the life is 18 times higher and the interest is reduced to 1/25; compared with nylon tube, the life is 3 times higher and the interest is reduced to 1/8. In the recommendation, the pipe barrier is 25% smaller than the non-metallic pipe, greatly improving the recommendation frequency.
3. In the chute, bucket and ore compartment lining areas, when using traditional non-metallic documents, in cold and wet weather, the items will thaw on the non-metallic, while using polymer polyethylene sheet will not, thus greatly reducing the unloading cost. After lining a layer of molecular polyethylene sheet on the dump leakage of the bulk truck and ship, the symmetrical unloading time is reduced from the original 16 ~ 20h to 8h.
4. In terms of national defense munitions equipment, due to its good impact resistance and large energy absorption, it can be made into protective clothing, helmets and bulletproof materials in the military, such as armor protection plate of helicopters, tanks and ships, radar protective shell cover, missile cover, body armor, stab clothing, shield, parachute and so on.
5. In space engineering, because of its light weight, high strength and good impact resistance, it is suitable for all kinds of aircraft wing tip structure, spacecraft structure and buoy aircraft. It can also be used as parachutes for space shuttle landings and ropes to suspend heavy objects from aircraft, replacing traditional steel cables and synthetic fiber ropes.
6. In the civil field, made ropes, cables, sails and fishing gear are suitable for Marine engineering, breaking length under dead weight is 8 times that of steel rope and 2 times that of aramid fiber. The rope is used as the fixed anchor rope of supertanker, offshore operation platform and lighthouse, etc. It solves the problems that the strength of the rope is reduced and broken due to the corrosion of steel cable and the corrosion, hydrolysis and ultraviolet degradation of nylon and polyester cable, which need to be replaced frequently.
7. In industrial applications, can be used as pressure vessel, conveyor belt, filter material, automobile buffer plate, etc.; Construction can be used as wall, partition structure and so on, using it as reinforced cement composite material can improve the toughness of cement, improve its impact resistance. Because of its excellent wear resistance, impact resistance, it is widely used in the machinery manufacturing industry, can make all kinds of gear, CAM, impeller, roller, pulley, bearing, bearing, bearing, shaft sleeve, cutting shaft, gasket, gasket, elastic coupling, screw and other mechanical parts.
8. It has been made into safety helmet, snowboard, sail wheel board, fishing rod, racket and bicycle, glide board, ultra-light aircraft parts and so on. Its performance is better than traditional materials.
9. In medicine, it has been used in dental tray materials, medical implants, plastic sutures and other fields with good biocompatibility and durability, high stability and no allergy, so it has been used in clinical applications. It is also used in medical gloves and other medical measures.
