What is UHMWPE pipe?

What is UHMWPE pipe?

Material introduction: 
UHMWPE (Ultra High Molecular Weight Polyethylene) has extremely long chains, with molecular weight numbering in the millions (usually between 2 to 6 million, the pipeline  raw material we quoted you is 3.5million). In general, HDPE molecules have between 700 and 1,800 monomer units per molecule, whereas UHMWPE molecules tend to have 100,000 to 250,000 monomers each. The chains of UHMW align in the same direction. The bonds between the chains are not very strong however, because they are so long there are more bonds holding it together then polyethylene with shorter chains. These long chains give UHMW high tensile strength. The longer chains serve to transfer load more effectively to the polymer backbone by strengthening intermolecular interactions. This causes the material to be very tough and gives it the highest impact strength of the polyethylenes. It has a density of 0.928-0.941 g/cm3. 

Production flow of the UHMWPE pipe: 

Production flow of the UHMWPE pipe

The photos of the UHMWPE pipe: 

UHMWPE pipe 

lOADING OF UHMWPE pipe 

Applications of the UHMWPE pipe: 

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Collision Resistant UHMWPE Plastic Buoy

Collision Resistant UHMWPE Plastic Buoy 

UHMW-PE Navigation Buoy is kind of signal for vessel guiding, positioning, obstacles marking and warning marking. The buoy consists of light stand, floating body and tail pipe. The light stand is used for the signal light, which will provide light signal for vessels, the floating body will provide sufficient buoyancy for the buoy, and the tail pipe with ballast is to guarantee the stability of the buoy.

The raw material of the UHMWPE plastic buoy is Ultra High Molecular Weight Polyethylene, which is a polyethylene polymer with an average molecular weight greater than 1,500,000 .  This molecular weight is well above the molecular weight of most typical polymers which are between 1,000,000 and 400,000 thus earning the title Ultra-High Molecular Weight Polyethylene. Because of the ultra high molecular weight, the UHMWPE plastic buoys have the following advantages:

UHMWPE plastic buoy advantages:

a.Maintenance free:

The color of the floating body is material's color without painting(The color is moulded in, so the floating body needs no painting); the UHMWPE floating body and tail pipe is not easy to adhere to water growth, which minimize the costs for cleaning.

b. Collision Resistance:

The floating body with great resilience, stretch resistance, and inside with scientific physical structure, thus it could absorb the collision force, when it was impacted, it can rebound immediately without deformation.

c. Longer service life:

 The floating body and tail pipe material is UHMWPE and scientific formulations, with higher chemical stability and corrosive resistance, thus it could keep mechanical properties without aging for at least 20 years. Also it has passed the 200h Xenon lamp aging test without fading and aging.                                                                              
d. Environment Friendly:

The main material of UHMWPE buoy is UHMWPE, which is non-toxic and tasteless, has no pollution to the environment during the manufacturing process and operation process.

For more details about the collision resistant UHMWPE buoy, please feel free to contact cocoyuan@buoyandpipe.com,  Whatsapp/viber: 8615224285781