Semi-superdurable dry blend matt polyester resin (SJ4817/SJ4818) for aluminum profiles used in construction which meets the national standard(GB/T 5237.4 -- 2017) has been successfully developed and mass produced.

 

Technical Specification for Resins

Powder recipe:

Curing condition: 200℃@10分钟

60° Gloss %：20~30°   

Gloss retention time for UVB-313nm50%＞384h；

 

Note：UVB test method：

1. condesation：40℃±3℃，4hrs；

2. Exposure to light：50℃±3℃，0.75 w∕(m2· nm)，4hrs