The extension effect of lubrication in the processing of PVC products

1. Inhibit material degradation

PVC has a large friction heat generation characteristics of materials, materials in the

processing of local overheating and degradation and lead to degradation of materials as

a whole.
2. Modulating resin plasticizing

In plastic thermoplastic processing, the heat required for resin plasticizing comes from

the conduction from the cylinder wall and the surface of the screw and the friction of

the material during the feeding and compression stages. However, the transfer of heat

through the conduction is slow and can not meet the needs, Friction is the main source

of heat. It is not difficult to understand that PVC lubricants can reduce the interaction

between PVC molecules through internal lubrication and promote plasticization,

or through the role of external lubrication to slow down the heating rate of plastic and

reduce the transfer efficiency of mechanical forces in materials and inhibit plasticizing.

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3. Changing the melt flow behavior

The flow behavior of melt can be changed by PVC lubricant through the action of

internal and external lubricant. The internal lubrication reduced the melt viscosity but

did not affect the adhesion to the metal surface. Obviously, the stronger the internal

lubrication, the higher the melt flow rate. The external lubrication reduces the adhesion

of the melt to the metal surface but does not affect its viscosity, so the melt advances at

the same speed.

4. Eliminate melt rupture

Polymer melt fracture is a flow instability phenomenon of elastic polymer melt due to

adhesion and sliding alternation under high shear stress. The basic lubricating effect of

PVC lubricant is to reduce the melt viscosity, elasticity and the adhesion of the melt to

the metal surface of processing equipment.

Qingdao Sainuo Chemical Co.,Ltd. We are manufacturer for PE wax, PP wax, OPE

wax, EVA wax, PEMA, EBS,Zinc/Calcium Stearate…. Our products have passed the

REACH, ROHS, PAHS, FDA testing.

Sainuo rest assured wax, welcome your inquiry!

Website:https://www.sanowax.com

E-mail:sales@qdsainuo.com

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Adress:Room 2702,Block B, Suning Building, Jingkou Road, Licang District,

Qingdao,China.

 

 

 


Post time: Feb-03-2021
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