UHMWPE marine fender pads is light weight, impact resistance, corrosion resistance, UV resistance, aging resistance, small friction coefficient, non-toxic, pollution-free, not easy to adhere to foreign bodies, can absorb shock impact and noise, and is the best material to replace steel, copper, aluminum and other metal materials.It can effectively prevent the influence of ultraviolet radiation and hull impact on the hull and the anti-punching plate, rubber fender and wharf.
What is UHMWPE?
The full name of UHMWPE is ultra-high molecular weight polyethylene (UHMWPE for short), which is an unbranched linear polyethylene with a molecular weight of more than 1.5 million. Molecular formula: —(—CH2-CH2—)—n—, density: 0.920～0.964g/cm3. Heat distortion temperature (0.46MPa) 85℃, melting point 130～136℃.
UHMW-PE is a linear structure of thermoplastic engineering plastic with excellent comprehensive properties.
Ultra-high molecular weight polyethylene is a kind of polymer compound, which is difficult to process, and has super abrasion resistance, self-lubrication, high strength, stable chemical properties, and strong anti-aging performance. When ethylene, we must pay attention to these characteristics, the specific identification methods are as follows:
1. Weighing rule: The specific gravity of the product made of pure ultra-high molecular weight polyethylene is between 0.93-0.95, the density is small, and it can float on the water. If it is not pure polyethylene material, it will sink to the bottom.
2. Temperature measurement: Pure ultra-high molecular weight polyethylene products will not melt or deform at 200 degrees Celsius, but will become soft. If it is not pure UHMWPE material, it will deform at 200 degrees Celsius.
3. Visual inspection method: The surface of the real UHMWPE is flat, uniform, smooth and the cut surface density is very uniform, if it is not pure polyethylene material, the color is dim and the density is uneven.
4. Edge test method: the pure UHMWPE flanging end surface is round, uniform and smooth, if it is not pure polyethylene material, the flanging end surface has cracks, and slag will appear when the flanging is heated after heating.
Compared with other engineering plastics, ultra-high molecular weight polyethylene (UHMW-PE) has the disadvantages of low surface hardness and heat distortion temperature, poor bending strength and creep performance. This is due to the molecular structure and molecular aggregation morphology of ultra-high molecular weight polyethylene (UHMW-PE), which can be improved by filling and cross-linking methods.
Use glass beads, glass fiber, mica, talc, silica, aluminum oxide, molybdenum disulfide, carbon black, etc. to fill and modify the ultra-high molecular weight polyethylene (UHMW-PE), which can make the surface hardness, Rigidity, creep, bending strength, and thermal deformation temperature can be better improved. After treatment with coupling agent, the effect is more obvious. For example, the glass beads after filling treatment can increase the heat distortion temperature by 30°C.
Glass beads, glass fiber, mica, talc, etc. can improve hardness, rigidity and temperature resistance; molybdenum disulfide, silicone oil and special wax can reduce the friction factor, thereby further improving self-lubricating; carbon black or metal powder can improve resistance Static electricity, conductivity and heat transfer. However, the impact strength of the filler is slightly reduced after modification. If the content is controlled within 40%, the UHMW-PE still has a fairly high impact strength.
Ultra-high molecular weight polyethylene (UHMW-PE) resin has a long molecular chain, which is susceptible to fracture due to shearing force, or degradation by heat. Therefore, lower processing temperature, shorter processing time and reduced shear are very necessary.
In order to solve the processing problem of UHMW-PE, in addition to the special design of ordinary molding machinery, the resin formula can also be improved: blending with other resins or adding flow modifiers to make it Forming processing on ordinary extruder and injection molding machine.
Due to the numerous excellent properties of UHMWPE, it has shown great advantages in the high-performance fiber market, including from offshore oilfield mooring ropes to high-performance lightweight composite materials, in modern warfare and aviation, Aerospace, maritime defense equipment and other fields play a pivotal role.
1. Ultra-high molecular weight polyethylene can be used to make the lining of trailers, silos, and chutes for powdered documents such as coal, lime, cement, mineral powder, salt, grains, etc., because it has excellent self-lubricating and non-stick properties , Which can prevent the above-mentioned powdered documents from sticking to the storage and transportation facilities, ensuring stable sponsorship.
2. Ultra-high molecular weight polyethylene is used for liquid sponsored pipelines such as quicksand. Compared with other pipelines, the outstanding performance is: the life span is increased by 18 times compared with bamboo pipes, and the interest is reduced to 1/25, compared with nylon pipe The number is increased by 3 times, and the interest is reduced to 1/8. At the time of sponsorship, the barrier inside the tube is 25% smaller than that of non-metallic tubes, which greatly increases the frequency of sponsorship.
3. In the range of chutes, buckets and ore cabin linings, when traditional non-metal documents are used, when encountering cold and humid weather, the items will be thawed on the non-metal, and the use of polymer polyethylene sheets will never , Thereby greatly reducing the cost of unloading. After lining a layer of high molecular polyethylene sheet on the self-unloading leaks of bulk vehicles and ships, the uniform unloading time is reduced from the original 16-20h to 8h.
4. In terms of equipment for national defense, because of its good impact resistance and greater energy absorption, it can be made into protective clothing, helmets, and bulletproof materials in the military, such as armored protective panels for helicopters, tanks and ships, and radar Protective shell cover, missile cover, body armor, stab vest, shield, parachute, etc.
5. In aerospace engineering, due to its light weight, high strength and good impact resistance, it is suitable for various aircraft wingtip structures, spacecraft structures and buoy aircraft. At the same time, it can also be used as a deceleration parachute for the landing of a space shuttle and a rope for suspending heavy objects on the aircraft, replacing the traditional steel cable and synthetic fiber rope, and its development speed is extremely rapid.
6. In the civil field, the ropes, cables, sails and fishing gear made are suitable for marine engineering. The breaking length under its own weight is 8 times that of steel ropes and 2 times that of aramid. The rope is used for the fixed anchor ropes of super tankers, offshore operating platforms, lighthouses, etc., and solves the rust and the corrosion, hydrolysis, and ultraviolet degradation of nylon and polyester ropes encountered in the past using steel cables. , The problem of frequent replacement.
7. In industrial applications, it can be used as pressure container, conveyor belt, filter material, automobile buffer board, etc.; in construction, it can be used as wall, partition structure, etc., using it as a reinforced cement composite material can improve the toughness of cement , Improve its impact resistance. Because of its excellent wear resistance and impact resistance, it is widely used in the machinery manufacturing industry to produce various gears, cams, impellers, rollers, pulleys, bearings, bearings, bushings, shafts, gaskets, Mechanical components such as gaskets, elastic couplings, screws, etc.
8. Safety helmets, snowboards, windsurfing boards, fishing rods, rackets, bicycles, gliding boards, ultra-lightweight aircraft parts, etc. have been made into sports goods, and their performance is better than traditional materials.
9. In medicine, it is used in the fields of dental tray materials, medical implants and plastic sutures. It has good biocompatibility and durability, and has high stability without causing allergies. It has been used in clinical applications. . It is also used in medical gloves and other medical measures.
1. Good wear resistant
2. Corrosion&Impact resistant ;
3. Anti-Low Temperature And UV
4. Easy To use;
5. ISO9001 Certification,Good quality
6. Can be used in bad weather condition;
