Processing Methods And Application Of UHMWPE

August 12, 2024

UHMWPE processing method:

Since the viscosity of UHMWPE in the molten state is as high as 108Pa-s and the fluidity is extremely poor, it is difficult to be processed by general mechanical processing methods. However, with the development of technology, through the modification of common processing equipment and material modification, it has been possible to realize extrusion, blow molding, injection molding and other special methods of molding.

Specific processing methods include:

Pressing and sintering: This is the most primitive processing method of UHMWPE, with low production efficiency and easy oxidation and degradation. In order to improve efficiency, direct electric heating or ultra-high-speed fusion processing method can be used, the latter can make the material to the processing temperature in a few seconds.

Extrusion molding: extrusion molding equipment are mainly plunger extruder, single-screw extruder and twin-screw extruder, of which the twin-screw extrusion more isotropic rotary twin-screw extruder. China in 1994 at the end of the development of φ45-type UHMWPE special single-screw extruder, and in 1997 to obtain φ65-type single-screw extrusion pipe industrialized production line success.

Injection molding: Japan developed this process in 1974 and commercialized it in 1976, and then developed reciprocating screw injection molding technology. China in 1983 on the domestic XS-ZY-125A injection molding machine modification, successfully injected out of beer canning production line with UHMWPE wheels, pump bushings and so on.

Blow molding: material extruded from the mouth of the mold due to the elastic recovery back to shrink, and almost no sagging phenomenon, conducive to hollow containers, especially large containers of blow molding, can be made in the longitudinal and transverse direction of the strength of a balanced high-performance film.

Special method: freeze gel spinning: it is a novel spinning method to prepare high strength and high modulus Polyethylene fiber. Specific strength is the highest among chemical fibers, and has good wear resistance, impact resistance, corrosion resistance, light resistance and other excellent properties, can be made directly into ropes, cables, fishing nets and a variety of fabrics, as well as bullet-proof undershirts and clothes, cut-proof gloves, etc., of which the bullet-proof effect is even better than that of aramid. Internationally, it has been used to weave into different fiber ropes to replace the traditional steel cables and synthetic fiber ropes.

Ultra High Strength UPE Rope

Application Fields

UHMWPE has been widely used in textile, paper, packaging, transportation, machinery, chemical, mining, petroleum, agriculture, construction, electrical, food, medical, sports and other fields, and began to enter the field of conventional weapons, ships, automobiles and so on.

Specific applications include:

1.Wear-resistant and impact-resistant applications: textile machinery: such as bobbin thrower, shuttle bar, gears, couplings, flower sweeping rod, buffer blocks, eccentric wheels, rod bushings, oscillating rear beam and other impact-resistant wear parts. Paper machinery: such as paper machine scraper, suction box cover, deflector, water wings, pressure sealing parts, joints, sealing shaft, deflector, scraper, filter, etc.. Packaging machinery: instead of modified fluoroplastics to make guide rails, conveyor slider seat, fixed plate, etc.. General machinery: making gears, cams, impellers, rollers, pulleys, bearings, axle tiles, bushings, pins, gaskets, gaskets, elastic couplings, screws, pipe cards, etc., as well as wharves, bridge piers, protective plates.

UPE gears and other drive applications

2.Self-lubricating and non-adhesive-based applications: material storage and transportation: making powdery class lining, such as silos, hoppers, chutes and other reflux devices, sliding surfaces, rollers, etc., as well as coal hoppers, powder product hoppers and other hoppers such as hopper lining storage bin hopper liner. Agricultural and construction machinery: making anti-wear plates and brackets for agricultural tools. Sporting goods: making skateboards for ice skating, sled towing boards, etc.

UPE wear parts

3.Corrosion-resistant and non-absorbent applications: Container packaging: making warm water containers for solar energy equipment. Chemical equipment: to make chemical industry parts, such as sealing filler plate, filler material, vacuum mold box, pump parts, bearing lining tile, gear, sealing bond. Conveying pipes.

UPE boards, molded boxes

4.Hygienic and non-toxic applications: food and beverage industry: manufacture of various gears, cams, conveyor line wear-resistant guardrails, gaskets, guide rails, and a variety of friction-reducing, self-lubricating bushings, linings, etc., such as guard rails, star wheels, guided kun gears, bearing linings and so on for food machinery.

UPE high strength sand slurry pipe

Who are the manufacturers of UHMWPE?

International Manufacturers

Honeywell: Honeywell is one of the world's leading manufacturers of UHMWPE fibers, and its Spectra brand is well known in the field of high-performance fibers.

DSM: DSM is a Dutch company with Dyneema as its brand name for high-performance UHMWPE fibers, which are widely used in areas such as bulletproof vests, ropes and composites.

Celanese: One of the world's largest and most complete UHMWPE manufacturers.

Quadrant: "Quadrant AG": formerly headquartered in Zurich, Switzerland, acquired by Mitsubishi in 2019 and renamed Mitsubishi Chemical Advanced Materials AG on April 1 of the same year.

KPIC: a major UHMWPE producer in South Korea.

Asahi Kasei: a Japanese company that produces UHMWPE products for the food processing and handling, power, railcar, steel, cement, food, chemical, battery, minerals and metals industries.

Mitsui Chemicals: A Japanese chemical company with UHMWPE products supplied in the Asia Pacific region.

Braskem: One of Brazil's leading plastics and chemicals companies. UTEC is the trade name for Ultra high molecular weight polyethylene (UHMWPE) produced by Braskem.

Chevron Phillips Chemical: an international chemical company involved in the production of UHMWPE.

Thailand Petrochemicals (IRPC): produces POLIMAXX UHMWPE in a variety of grades.

LyondellBasell: the world's largest producer of polyolefins with LUPOLEN UHMWPE materials.

Murtfeldt: German manufacturer of high-performance engineering plastics.

Author:

Ms. Tina

E-mail:

sales@honyplastic.com

Phone/WhatsApp:

+8618680371609