The main extrusion method parameters for the standard of PVC low-foaming solid board area unit extrusion temperature, pressure, and duration. What's the impact of PVC Foam Board method control? Next, allow us to take a glance.

Here is that the content list:

l Extrusion temperature

l Extrusion pressure

l Residence time

Extrusion temperature

Under traditional circumstances, the bubble formation of PVC Foam Board foamed vinyl polymer will be roughly divided into 3 stages: bubble core formation, bubble growth, and bubble fixation. The gas created by the reaction of the chemical processing agent within the liquefied material can type a gas-liquid (melt) answer. With the rise of the generated gas. once the soften reaches liquid saturation, the gas can type bubble nuclei within the soften. This method is named nucleation. Once the extrusion temperature of PVC Foam Board is low, the gas-containing soften can type massive bubbles with high foaming density because of the uneven mixture and fewer nucleation and uneven dispersion. Once the temperature rises to an exact worth, the materials area unit is uniformly mixed, and also the gas is well-plasticized. The solubility of the gas within the soften will increase and also the range of nucleation will increase, thus a foam with a tiny low pore size and a tiny low density is obtained. once the temperature of the PVC Foam Board continues to rise, the fabric viscoelasticity decreases because of the decrease of the soften strength. The cells will become larger because of mutual penetration and also the gas diffuses from the soften to the outer surface, which will increase the density of the froth. Once the temperature exceeds an exact worth, the extruded soften cannot face up to the inner gas growth force and quickly collapses. The cross-sectional of the solid block can seldom increase in density.

Extrusion pressure

The extrusion pressure of the PVC Foam Board includes a nice influence on the standard of the solid board. Too high or too low soft pressure can affect the uniformity of the dimensions of the solid board. In production, it's necessary to manage the acceptable soft pressure to realize the uniform size of the solid board. Because the extrusion pressure of the PVC Foam Board will increase, the cell size becomes smaller, and also the range of cells will increase.

Residence time

The duration of PVC Foam Board material within the extruder varies greatly counting on the foaming quality. The degree of decomposition of the processing agent includes a ton to try to with the magnitude relation of gas to the nucleus within the soften once it leaves the die. In an exceedingly short time, the degree of decomposition of the processing agent is low, and also the magnitude relation of gas to the nucleus is little, however, the nucleation rate is comparatively massive. That is, the density of the merchandise is higher. If the duration of the PVC Foam Board is simply too long, it'll cause the foaming agent to decompose untimely and affect the nucleation result, and also the range of cells can decrease, and also the magnitude relation of gas and nucleus can become massive, forming a foam board with shy nucleation.

Hangzhou Jiaying Trade Co., Ltd. is an associate enterprise desegregation R&D, production, and selling. It principally provides high-quality PVC boards, Foam boards, decorated boards, and alternative ornamental boards. Our company is found in Hangzhou, Zhejiang, an illustrious historical town in southern China. It's near to Shanghai, one hour by train or a pair of hours by high speed, and solely twenty minutes drive from Hangzhou International aerodrome. We've three factories in Hangzhou and Shaoxing, every one of them takes a pair of hours to load merchandise from Shanghai and Ningbo ports. The above is regarding the relevant content of PVC Foam Board method management influence. If you're fascinated by PVC Foam Board, our website is https://www.hzpvcboard.com/.