Polyurethane Straight Air Hose Hardness

 The mechanical properties of polyurethane straight air hose mainly include: hardness, tensile strength, compression property, tear strength, resilience, wear resistance, flexion resistance, etc. In addition to these properties, the mechanical properties of TPU elastic plastic also include high shear strength and impact energy.

Hardness is an indicator of the resistance of the polyurethane straight air hose  to deformation, nicks and scratches. The hardness of polyurethane straight air hose is usually measured by Shore A and Shore D sclerometers. Shore A is used for softer  polyurethane straight air hose , and Shore D is used for harder  polyurethane straight air hose  Because of the nature of block copolymer TPU, its range is very wide, ranging from Shore A60 to Shore D80, which spans the hardness of rubber and plastic. The hardness of material of  the polyurethane straight air hose is related to many properties. With the increase of hardness, the following properties of the polyurethane straight air hose  change.

  Tensile modulus and tear strength increase, rigidity and compression pressure (load capacity) increase, elongation decreases, density and dynamic heat generation increase, and environmental resistance increases.

ATTENTION

1.The input medium of Pu hose is mainly gas. It is better not to have corrosive media such as water and oil, because it will affect the service life of the gas pipe

2.Do not put it in a place exposed to the sun or in a wet place, which will affect the service life of the pu hose

3.The normal operating temperature of the pu tube is 20 degrees below zero to 40 degrees above zero. Too low a temperature will make the gas tube hard and easy to break. Too high a temperature will reduce the pressure range of the gas tube and easy to burst the gas tube

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