PVC Resin: PVC Generally choose SG-8 type resin, the process of gelation speed, processing temperature is relatively low, product quality is stable, density easy to control.In recent years, many manufacturers replaced SG-5 resin.
STABILIZER: The choice of stabilizer, considering the environmental protection and good effect preferred rare earth stabilizer, but because the price is relatively high, no promotion, the future with the requirements of environmental protection, rare earth Stabilizer market will usher in a bright future. The zinc-burning problem of calcium-zinc stabilizer and the low dosage of stabilization effect were also less.At present, the most used is the lead salt stabilizer, foaming board because of the mold cross-sectional width, flow length and yellow hair bubble decomposition production heat, demand stabilizer lead content is high, stable effect is good, otherwise products are prone to various problems.
Blowing agent: The selection of foaming agents, blowing-agent AC in the decomposition process to release a lot of heat, easy to lead to yellowing of the middle section, which requires a certain amount of white foaming agent, decomposition up to absorb the role of excess heat, the need for blowing agent head number to large, in order to make foam evenly without large bubble hole.
Regulator: Foaming regulator, through years of research and development and improvement, foaming regulator ACR technology more sophisticated, more stable performance quality, foam board according to the thickness, the thin plate should be selected plasticizing fast, thick plate should be used to plasticizing slow-dissolving body strength of the foaming regulator.
Lubricant: The selection of lubricants to follow the initial mid-term lubrication principle, so that the material at all stages of the protection of lubricants, adhere to a long period of stable production without precipitation scaling.
Foaming AIDS: In the production to improve the foaming quality and foam structure can be added a small amount of foaming agent zinc oxide, in order to reduce precipitation can be added a small amount of aluminum silicate.
Pigments: To achieve a more beautiful effect, you can add titanium dioxide and fluorescent brightener, in order to improve weathering resistance can add antioxidants and ultraviolet absorbent. Filler: Choose light calcium carbonate, no need to use active calcium, choose high mesh number as the main.
Post time: Jun-13-2022