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December 29, 2017

In many cases, the materials are required to have flame retardancy, the commonly used occasions are electronic appliances, and the automobile industry also has the flame retardant requirements, but generally low. Flame retardants can be achieved by adding flame retarda...

December 28, 2017

First, the mold rusty reasons

1-1, Forming material decomposition products,such as chloride ions- decomposition from the PVC production process .

1-2, mold resurgence.

1-3, sweat on hand.

1-4, other foreign matters such as circulating water, steam and so on.

Second, the ass...

December 27, 2017

In the extrusion process of the extruder, the molten material is transported to the mold through the filter net. The filter net makes the material filter, and can improve the mixing effect of the material. However, the filter can also make the process fluctuate, result...

December 25, 2017

Economic progress has promoted the development of plastics processing industry. Since the 80s of last century, plastic calendaring products have been widely concerned with high efficiency, high quality and low cost. The research work of PVC has made great progress unde...

December 21, 2017

PVC bending deformation is a common problem in the extrusion process, the main reasons are: Die material uneven; cooling, cooling material is not sufficient, after sllrinkage inconsistent equipment and other factors.

It is suggested to be solved in the following aspects...

December 20, 2017

The surface shrinkage marks on the surface of PVC profiles affect the appearance of the profile, and even affect the neat angle surface. It is a pity that the high quality level of doors and windows. The following analysis of the phenomenon of surface shrinkage marks i...

December 18, 2017

Heat stabilizer is one of the most important auxiliaries in the process of PVC processing.
The number of PVC heat stabilizers used is not much, but its effect is huge. The use of
heat stabilizers in PVC processing can ensure that PVC is not easy to degrade and is
more...

December 15, 2017

1. Color yellow problem

The reasons and solutions are as follows:

First, PVC itself is poor. If it is a new PVC resin manufacturer, it may be that the PVC itself is not stable and can be changed the PVC. However, even the used brand PVC can also be caused by PVC resin it...

December 13, 2017

1. calcium carbonate as PVC part to study its effect on plasticizing, mechanical properties;

2. by plasticizing time on the plasticizing degree of influence, to study its effect on mechanical properties.

Experimental content

  1. formula: PVC:100phr, stabilizer:4.5phr, tit...

December 11, 2017

Since early 1970s, PVC has become an environmentalist, safety advocates and mediators of concern and attack targets, the main contents are:


(1) suspected carcinogenic vinyl chloride;

(2) PVC combustion or waste ashes may form dioxins;

(3) the potential toxicity of some a...

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The role of the three functional zones of the PVC extruder

March 18, 2019

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