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March 18, 2019

The role of the three functional zones of the PVC extruder

The melting temperature and degradation temperature of PVC compound are relatively close, and good plasticization is required to prevent degradation of the melt. Therefore, generally according to the work functi...

June 15, 2018

Dispersant is an interfacial active agent with both hydrophilic and hydrophilic properties. The solid particles of inorganic and organic pigments which are difficult to dissolve in liquid can be uniformly dispersed. At the same time, the settling and condensation of so...

June 13, 2018

1. Grade of flame-retardant

Flame retardancy is a process that prevents or suppresses the rate of physical / chemical change during combustion of polymer materials. The flame-retardant grade of plastics was gradually increased from HBV-2V-1 to V-0, and the flame-retarda...

June 8, 2018

There are many auxiliaries in PVC pipe processing, the most important thing is that the selection is wrong and it is not used correctly. We should look at the material used for the performance of the pipe and the prescription for the material performance, otherwise, th...

June 7, 2018

Water immersion whitening. Many types of transparent PVC products show a white haze turbid appearance when they are in contact with water or steam for a long time. Soft goods are more powerful than hard ones. Due to water permeation, plasticizers, stabilizers, etc., ar...

June 6, 2018

PVC is widely used in shoes because of its high cost performance. However, the white soles often appear the phenomenon of color change and yellowing, especially in summer high temperature weather. In order to prevent the soles from yellowing, we should first make clear...

May 31, 2018

Colored plastic PVC products will fade due to many factors. The discoloration of colored plastic  products is related to the light resistance, oxygen resistance, heat resistance, acid resistance of color powder as well as the properties of the resin used.

The...

May 31, 2018

The degree of plasticization of PVC hard goods is between 60% and 70%. Excessive or too low degrees of plasticization will affect the physical and other properties of the products. Judging whether the processing technology is suitable and the plasticizing degree of the...

May 15, 2018

Calcium stearate,white powder, calcium content: 6.4%-7.0%, free acid is less than 0.1%, volatile content is less than 2%. Melting point is 149-155 degrees. Insoluble in water and most solvents. When heated, it is slightly soluble in ethanol, aromatic compounds, chlorin...

May 14, 2018

PVC material, because of low price, is inborn with anti-inflammatory properties, strong and strong, good anti chemical ability, the shrinkage rate is 0.2-0.6%, products in electrical appliances, machinery, construction, daily necessities, toys, packaging, the character...

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The role of the three functional zones of the PVC extruder

March 18, 2019

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