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Quick Details
Specifications
What is new generation - CRA impact modifier?
CRA is our unique PVC impact modifier developed by our R&D Center, which is an interpenetrating network copolymer (IPN),Its main function is to enhance the impact strength of PVC finished products under low temperature and to promote the fusion property of PVC blend. It can endow the best impact-resistance and toughness to PVC final products than other PVC impact modifiers.
In addition CRA series have better weatherability owing to it has not any chemical double bond. CRA series are insoluble in water and ethanol, but soluble in acetone and chloroform
Classifications:
(1)CRA-01M:replace opaque MBS
(2)CRA-02A:replace AIM(acrylic impact modifier)
(3)CRA-03CA:replace CPE+AIM(acrylic impact modifier) with less dosage
(4)CRA-04CP:replace CPE+PA(processing aid)or 100% CPE with less dosage
CRA's benefits:
● Excellent impact strength under low temperature
● Excellent toughness and hardness for PVC products.
● Excellent corner welding strength for PVC profile
● Excellent nail-force for WPC.
● Better weather-resistance
● better surface glossiness for PVC finished products
Technical specifications:
Specification | CRA-01M | CRA-02A | CRA-03CA | CRA-04CP | Test Method |
Appearance -- | White Powder | White Powder | White Powder | White Powder | |
Bulk density g/cm3 | 0.45-0.55 Min | 0.30 Min | 0.30 Min | 0.30 Min | GB/T1636-2008 |
Sieve residue (30mesh) % | 98 Min | 98 Min | 98 Min | 98 Min | GB/T 2916 |
Volatile Content, % | 1.0 | 1.5 | 1.5 | 1.5 | ASTMD5668 |
Izod Impact Strength |
Higher----------------------Lower | GB/T1843-2008 | |||
Application fields:
CRA series are mainly used to produce opaque PVC products,such as PVC profiles, PVC pipes, PVC sheet ,PVC panel , WPC etc.
How to use CRA to replace other PVC impact modifier?
If you use CRA to replace other PVC impact modifier,Normally you don't need change your current formulation except for reducing the using dosage of impact modifier.
Please just let us have your below answers,our technician will recommend the correct CRA type and using dosage to you.
1. What kind of PVC products are you producing? PVC pipe, PVC profile or others?
2.What kind of stabilizer are you using? Tin stabilizer, Ca-Zn stabilizer or lead compound stabilizer?
3.What the filler content are you using in present formulation?
4.Currently how many impact modifier are you adding per 100kg PVC ?
For example: we are using 8kg CPE plus 1kg processing aid per 100kg PVC resin to produce PVC window profile ,the filler content is 10kg per 100kg PVC.
Packaging and Storage:
25kg/bag PP valve bag with PE liner ,550kg/sack PP bag with PE liner or requirement by customer.
It should be stored in cool and dry surroundings with shelf life of two years, it can be still used if qualified by inspection after shelf life.