TPU plastic properties and injection molding process requirements

TPU performance profile

Use: 1, a variety of machinery (PU): corrosion-resistant, hydrolysis-resistant, abrasion-resistant PU polyether seals, diaphragms, oil seals, etc.;

2, general-purpose polyurethane plates, rods, tubes, belts;

3, printing presses, photocopying machines, textile machinery dedicated to the resistance of various solvents rollers, wheels, etc., the hardness of the Shore A60 to Shore A98;

4, industry-specific (PU); wheel, forklift wheels, skateboard wheels, smoke machine wheels, bearing wheels, drive wheels, etc.

5, pumps and valves (PU); corrosion resistance, abrasion resistance, water resistance, methane-alcohol-resistant valve lining, seals, couplings,

Diaphragm, muffler layer, floats, and other products can be made to withstand low temperatures (-40 ° C) products;

6, shoe machine special (PU): wheel, mold, press pads, with the help of the hand, in 50T-100T pressure, punch, compression, never change

shape;

7, mining machine special (PU): water-resistant, alkali, highly wear-resistant conveyor belt wheels, sieves, boards, etc.;

8, the automotive industry (PU): steering wheels, armrests, dashboards, cushions, sunroofs, bumpers, floats, and other products. PU accessories: steering wheel, armrest, instrument panel, seat cushion, sunroof, bumper, float and crafts class interior

pieces, picture frames, etc.;

9, hydraulic machine special (PU) accessories: various specifications USH, UNS, DHS, YX type YA type, J type, polyurethane seal

ring, oil seal king;

10, electrical appliances (PU): muffler layer, seals, pneumatic floats and so on.

Product characteristics: 1, abrasion resistance is generally rubber 3 to 5 times

2, wide range of hardness, Shore A60 ~ Shore D75?

3, oil resistance, corrosion resistance, solvent resistance, high temperature resistance, aging-resistant special materials

4, tensile strength, tear strength is high 5, high elasticity, compression permanent deformation rate is low

Thermoplastics Polyurethane elastomer (TPU) between rubber and plastic, with many excellent characteristics:

1, excellent abrasion resistance: its Taber abrasion value of 0.35-0.5mg, the smallest in plastic. Add lubricants can reduce friction,

thus further improving the degree of abrasion resistance;

2, tensile strength and tensile rate: TPU's

Tensile strength of natural and synthetic rubber 2-3 times, polyester-type TPU tensile strength〉60Mpa, elongation of 410% , polyether-type

TPU tensile strength of 50Mpa, elongation 550% ;

Polyether-type

TPU tensile strength of 50Mpa, elongation 550%. Elongation 550%;

3, oil resistance: TPU oil resistance is superior to nitrile rubber, has excellent oil resistance life;

4, low temperature resistance, weather resistance, ozone resistance, TPU's weather resistance is better than natural rubber and other synthetic rubbers, and it's odor

Oxygen resistance, ray resistance in the aerospace industry has a special application;

5, food and health care: TPU is biocompatible and anti-coagulant, medical TPU applications are becoming more and more widespread. Such as blood vessels, urinary

tubes, infusion tubes. TPU does not contain enhancers, non-toxic and tasteless, widely used in the food industry;

6, hardness range: TPU hardness of 10A-80D, in the 15A or less have similar compression deformation characteristics. In the hardness of 85A or more when still

Keep elasticity, which is not a characteristic of other elastomers, so TPU has a high load support capacity and good suction and discharge effect;

7, TPU is generally divided into polyester-type TPU, polyether-type TPU and poly several, polycaprolactone-type TPU:

ⅰ polyester-type TPU performance characteristics

Polyester-type TPU: has a high mechanical temperature, good abrasion resistance, oil resistance, fuel and solvent resistance, high temperature performance and excellent

Ultraviolet resistance and hydrolytic stability. Have the above requirements of the application, the recommended use of polyester-type TPU series;

ⅱ polyether-type TPU performance characteristics:

Polyether-type thermoplastic polyurethane elastomers TPU, has a low-temperature flexibility, good weathering, excellent toughness, abrasion resistance, hydrolysis resistance

and anti-microbial properties, to meet the cold climate, hydrolysis, or mechanical damage under the environment Maintain the basic performance requirements of the product needs

Requirements; more typical applications in the cable industry: need to be coiled, stored and rewinding of cables in extremely harsh climatic conditions, the need to drag in the rocky

rocky terrain and in the desert or in the Arctic ice, need to be immersed in water or be twisted, bent, rough handling of electric

cables; but also seals, straps, tubing, and profiles; also ideal for seals, straps, tubing, and profiles.

ⅲPolycaprolactone TPU Performance Characteristics

Polycaprolactone TPU: not only has the mechanical strength and high temperature performance of polyester TPU, but also has the hydrolysis resistance and low temperature resistance of polyether TPU

Performance, good resilience, suitable for special industry applications.

Properties: TPU material is used to produce plastic rods with tensile strength, strong tension, high tear strength, abrasion resistance, bending resistance, penetration resistance, resistance to

low temperature, hydrolysis resistance and other properties, and has a very good resilience and long service life. This product does not contain plasticizers, non-toxic and tasteless, is a high

performance environmentally friendly materials. It is the best alternative to PVC and rubber materials. Types: polyester TPU, polyether TPU, polycaprolactone type

TPU.

Product characteristics: TPU has superior mechanical properties, good abrasion resistance, low-temperature resistance, resistance to aging, high strength impact resistance and

tear resistance, and has a high degree of elongation and tensile strength. It is non-toxic, environmentally friendly materials, abrasion resistance (more wear-resistant than POM and nylon);

High softness, mute, higher modulus of elasticity than similar hardness of the rubber, in solvents and fuels in the swelling of a small, good weathering resistance, does not contain plasticizers.