Calcium Zinc Stabilizer Is The Most Widely Used
The calcium-zinc stabilizer has been widely used for its non-toxic, inexpensive, good lubricity and the combination of long-term thermal stability of calcium soaps with good initial coloring of zinc soaps. However, due to thermal stability is not high, for a long time for the thermal stability of the low requirements of PVC soft products or as leaded, cadmium, barium thermal stabilizer of the auxiliary heat stable components used.
In order to improve the thermal stability of calcium-zinc stabilizer, the application range was enlarged. Since the 1960s, people on the basis of calcium and zinc composite, Ca-Zn Stabilizer the introduction of a variety of auxiliary components, including β one or two ketone, phosphite, epoxy compounds, polyols and antioxidants.
Calcium and zinc stabilizer is composed of calcium salt, zinc salt, lubricant and antioxidant, which is synthesized by special composite technology and widely used in the production of PVC resin products. Ca-Zn Stabilizer The use of calcium and zinc stabilizer has a lot of advantages, not much understanding can be with the small together to understand.
1 Calcium Zinc Stabilizer is a high efficiency, no lead, septum, barium and other heavy metals non-toxic calcium Zinc multi-functional composite stabilizer, calcium and magnesium hydrotalcite-dominated heat stabilizer with calcium and zinc organic acid salt.
2 has excellent thermal stability and lubrication, both light and stable effect.
3 has excellent initial coloring and color stability, Ca-Zn Stabilizer can improve the color brightness of products, both excellent electrical insulation.
4 has the unique coupling capacity, enhances the resin and the filler compatibility, may reduce the production cost suitably, enhances the product synthesis performance.
Calcium Zinc Stabilizer for a wide range of applications, can be used for cable materials, edge banding, calendering film, rubber shoes and other PVC resin soft products, as well as profiles, pipe, buckle board, foam board, plate and other PVC resin hard products industry.
Calcium Zinc stabilizer is usually divided into: solid calcium zinc Stabilizer and liquid calcium zinc stabilizer.
The calcium-zinc stabilizer is synthesized from calcium salts, zinc salts, Ca-Zn Stabilizer lubricants and antioxidants, which are mainly composed of special composite process. Ca-Zn Stabilizer It can not only replace the lead-cadmium salts and organic tin and other toxic stabilizers, but also has a good thermal stability, light stability and transparency and tinting power. It has been proved that in the PVC resin products, the processing performance is good, the heat stabilizing effect is equivalent to the lead salt stabilizer, and is a good non-toxic stabilizer.
1. Solid Calcium Zinc Stabilizer:
The appearance of calcium-zinc stabilizer is mainly white powdery, flaky and pasty. The powdered calcium zinc stabilizer is used as the most extensive non-toxic PVC stabilizer, often used in food packaging, medical devices, wire and cable materials. At present, we have already appeared the PVC calcium Zinc stabilizer which can be used in hard pipe.
The thermal stability of powdered calcium zinc stabilizer is not as good as lead salt, it has certain lubricity, poor transparence, and easy to spray frost. In order to improve its stability and transparence, it is often added that hindered phenol, polyol, phosphite and β-two ketone antioxidant to improve.
The two systems of calcium-zinc stabilizer are mainly divided into hydrotalcite-like system and zeolite system.
The price of powdered calcium zinc stabilizer is uneven, Ca-Zn Stabilizer without a standard standard.
2. Liquid Calcium Zinc Stabilizer:
The appearance of liquid calcium zinc stabilizer is mainly light yellow oily liquid. There is little difference between the stability of powder and liquid, the liquid CA-Zn stabilizer usually has a large solubility, and has good dispersibility in PVC resin powder, Ca-Zn Stabilizer and the effect on transparency is much less than that of powder stabilizer. However, the risk of liquid stabilizer being precipitated is greater. Need to select suitable solvents.
Liquid stabilizer is usually used for PVC products with a total plasticizer greater than 10~20PHR.
Metal soaps and auxiliaries have a greater solubility in solvents, low volatility, high flash point, low viscosity, colorless or light, no odor, non-toxic or low toxicity. For example, liquid paraffin, white oil, diesel oil, spindle oil and other mineral oils as solvents. It is noteworthy that some solvents exist polycyclic aromatic hydrocarbons, according to the relevant provisions of section 30th of the German Food and Commodities Act (LMBG), Ca-Zn Stabilizer the maximum allowable limit of total PAH is 10mg/kg (10PPM), the maximum allowable limit for pyrene (a) is 1mg/kg (1PPM), and some European Union countries are prepared to adopt this standard. The auxiliary stabilizer itself does not have the function of thermal stability, but it can improve the stability efficiency, because there is no single component assisted by cadmium, the main phosphite, epoxy compounds and phenolic antioxidants, beta-two ketone and other auxiliary substances are particularly important.