一. Advantages and disadvantages of calcium, zinc and lead-salt stabilizer
1.Aluminum salt stabilizer
advantages
- Good thermal stability effect, especially good long-term thermal stability
- Good electrical insulation and weather resistance
- price moderate
- Good workability is suitable for all kinds of processes
shortcoming
- Color aberration, cannot be used for transparent products
2. Calcium Zinc Stabilizer
advantages
- Green environmental protection products
- Thoroughly solve the phenomenon of sulfur and lead pollution
- Good switching adaptability; if originally used with lead salt stabilizer, replacing other stabilizer may cause cross contamination, but calcium and zinc stabilizer can reassure you.
- Light weight, can appropriately increase the inorganic filler, reduce the cost
二. Use of calcium zinc stabilizer precautions
- Confirm the green environmental protection of the stabilizer formula; pay attention to whether the content of heavy metals (lead, cadmium, tin, barium) can meet the product and meet the requirements of the new national standard
- Calcium and zinc stabilizer has a strong internal lubrication effect, and more external lubricants should be added
- The thermal stability of calcium and zinc stabilizer is weaker than that of lead salt, and the processing window is narrower, and the control requirements are higher
- During the operation process, pay attention to the cleaning cycle. The amount of calcium and zinc stabilizer lubricant is added, which can easily lead to the increase of precipitation, thus affecting the cleaning cycle. For large-scale production impact is greater, we should strictly select the stabilizer varieties. If it is its own stabilizer, it needs to cooperate with PE wax or oxidation wax with good lubrication effect in the middle and late period. But also strictly control the vacuum degree, can reduce the precipitation, extend the time of cleaning the mold.
- The formula and appropriate dosage of good stabilizer have little impact on the appearance, material properties, aging resistance.
