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Thermoplastic polyurethanes

Thermoplastic polyurethanes

Thermoplastic polyurethanes

TPU has high modulus, high strength, high elongation and high elasticity, excellent wear resistance, oil resistance, low temperature resistance, and aging resistance. At the same time, because of its environmental protection concept, it is becoming more and more popular. Therefore, it is now widely used in processing methods such as injection, extrusion, calendering, and dissolution into solution resins, and has become a plastic material often used by plastic processing industries.  
TPU performance
 
Thermoplastic elastomer represented by TPU and TPE is a new concept and multi-functional material. It has the characteristics of superior performance than general-purpose plastics and has attracted people's great attention. Although its start was late around 1960 , But has become the pride of new materials science in the 21st century, and there will be great room for development.
   Compared with general-purpose plastics, TPU has eight superior properties:
   •Strong wear resistance
   •Strong tear resistance
   •Excellent bending performance
   • High tensile strength and elongation at break
   • Low temperature resistance -35-50℃ and high temperature resistance performance up to 150℃
   •Long-term compression deformation rate is low
   • Resistant to oil, lubricating oil and aliphatic hydrocarbon solvents
   • Resistant to oxygen and ozone and anti-aging properties
 
Ordinary series (hardness 60A-64D)
Conventional products suitable for injection, extrusion and blow molding generally refer to TPU products for general use.
This type of product requires the basic physical properties of TPU: high mechanical strength, good moldability. In extrusion molding, even if the molding time is very long,
There will be no crystallization in this series of grades. Main applications include wear-resistant products such as casters, heels, handles, buttons, pneumatic tubes and bellows. 
 
Rapid prototyping series (hardness 60A-64D)
This series of grades is specially developed for sports shoe soles.
They have UV protection while meeting the stringent requirements of top sports shoe manufacturers.
In addition, these grades are also known for rapid prototyping, easy demolding and excellent fluidity during injection molding, making injection molding of thin-walled and long-process products easy.
 
Food grade series (hardness 60A-64D)
It is suitable for blow molding and coating molding, and can be used for food contact.
And can provide detailed information on the application of "food contact".
 
High transparent series (hardness 60A-85A)
This series of grades all have superior hydrolysis stability and special UV protection performance.
They can be used for the molding of transparent injection products with a wall thickness of up to 6 mm. These grades can also be used for hose, flat-extrusion film and profile extrusion molding.
 
UV resistance (yellowing) series (hardness 70A-64D)
In the use of TPU, yellowing is undoubtedly the most troublesome thing, especially for highly transparent or white products.
In addition to good physical properties, the products in this series are specially added with anti-yellowing ingredients, and their yellowing resistance grade is 4.5 or higher.
Ensure that there is no worries when using products with high requirements for UV resistance (yellowing). 
 
Extrusion (extrusion) grade series (hardness 75A-64D)
The surface gloss is divided into two types: smooth and matte, with good moldability and no pitting on the surface.
Used in elastic shoulder straps, various wires, decorative materials, sports equipment, clothing accessories, sealing materials and other fields.
 
Film series (hardness 70A-95A)
Waterproof and moisture-permeable membrane, environmental protection, excellent moisture permeability, 10000mm, water resistance above H2O, good elasticity, high strength, no shortcomings of microporous membranes
 
Modified series (hardness 70A-95A)
It is usually added directly to PA as a toughening masterbatch, and the effect is good.
 
Hydrolysis and corrosion resistance series (hardness 60A-64D)
The injection and extrusion grades have high mechanical strength, and at the same time have improved hydrolysis resistance and good low temperature flexibility, and have very little swelling in oil, grease and solvents.
This series of grades is often used in various extruded products and structural components with high stress requirements.
Improved compression deformation rate, elasticity, heat resistance, hydrolysis resistance, grease resistance, antimicrobial properties, etc.
These injection grades are first and foremost used in some functional parts in automobiles, mechanical engineering and factory equipment.
 
Adhesive series (hardness 70A-95A)
Used for various rubber, ABS, PVC, PS, PC, PMMA and other plastics, various steel, aluminum, copper and other metals, wood, resin, TPU and other materials can be bonded,
Typical application areas: mobile phone keys, precision electronics, plastic hardware industry, automobile industry, machinery industry, household appliances, wood, craft gifts, toys, audio equipment and other fields. 
Features: medium viscosity, fast curing, low whitening, high strength, wide application, low dosage, single component, simple to use.
 
TPU applications:
Car parts
Ball coupling; dust cover; pedal brake; door lock striker; bushing
Leaf spring bushings; bearings; shockproof parts; interior and exterior decorative parts; snow chains, etc.
 
Machinery and industrial parts
Various gears; seals (mainly for wear and oil resistance); anti-vibration parts; mold-taking needles; bushes; bearings
Covers; connectors; rubber screens; printing rubber rollers, etc.
 
Clothing accessories
Ladies' bra straps, clothing elastic bands, etc.
 
Footwear
Softball shoes, baseball shoes, golf shoes, soccer shoes soles and shoe forefoot
Ladies' heels; ski boots; safety boots, high-end soles, etc.
 
other
Self-positioning wheel; handle; watch strap, etc.
 
Pipes·Hose
High pressure tube; medical tube; oil pressure tube; pneumatic tube; fuel tube; coating tube
Conveying pipe; fire hose, etc.
 
Film and sheet
Rotating belt (with a certain stretching effect); air cushion; diaphragm; keyboard board; composite cloth, etc.
 
Wire and Cable
Power communication cables; computer wiring; automobile wiring; exploration cables, etc.
 
other
Various loop pipelines; round belts; V-belts; timing belts; anti-skid belts, etc.
 
Calender
Soft tanks, cans; film composite sheet, luggage fabrics, etc.
 
Blow molding
Various types of containers for vehicles; various types of containers
Blown film
Ultra-thin, wide-format film (medical and sanitary products)
Solution
 
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