Description:
Hydrotalcite is layered double hydroxides (LDH), with a series of unique and excellent properties and functions as a result of special chemical composition and crystal structure; it can develop different purposed products by changing the techniques and conditions.
Applications:
It can be widely used for PVC heat stabilizers;
As acid acceptor, it can play the synergetic effect with the anti-oxidant and light stabilizer system; Ultraviolet absorbents of agricultural films, the composition and structure of the hydrotalcite enable the agricultural films to selectively absorb the ultraviolet; widely used in such materials as fire retardants, catalyzers, medical and sterilization etc.
Properties:
Good heat stability: Its unique mechanism of acid absorption brings better heat stability than lead-based products.
High clarity: It provides the same refractive index as PVC.
Excellent insulation: absorbed chloride won’t release out through the anion exchange reaction, excellent insulativity.
Good safety: It can be used in food packaging of the polymer material after relative testing.
Good weatherability: It can be used with various heat stabilizers, no the sulfurous pollutants
Technical index:
|
Index
|
LDH-A
|
LDH-B
|
|
Application
|
PVC heat stabilizer
|
Acid absorbent
|
|
Refractive index
|
1.49 – 1.51
|
1.49 – 1.51
|
|
Heavy metal (≤ppm)
|
10
|
10
|
|
Average particle diameter (μm)
|
0.65
|
0.62
|
|
Specific surface area (≤m2/g)
|
30
|
30
|
|
PH value (2% ethanol)
|
8.5 – 9.5
|
8.5 – 9.5
|
Package: 20Kg per plastic woven bag, with inner PE bag.
Storage: In cool and draught place, no exposure to rain or sun.
Shelf time: 24 months.
