Total Solution for Weathering of Varied Wood Pretreatment

 

 

Everlight Chemical Ind. Corp. will hold a technical Seminar at the ChinaCoat 2011.

 

Topic: High Performance Light Stabilizers for Waterborne Wood Coatingss

                - Total Solution for Weathering of Varied Wood Pretreatment

 

 

Date: Novermber 24th, 2011      Time: 13:30 ~ 14:20

 
Venue: Shanghai New International Expo Centre (Sniec) (hall E3, Seminar Room No. M22)

 

 Speaker: Yung-Chi Yang / Engineer of Technical Dept. Specialty Chemical Business Unit, Everlight Group

 

 

 

 

Abstract:

 

Lignin, when exposed to the sunlight, can easily be degraded. To preserve the beauty of wood grain, UV absorber and light stabilizer containing waterborne clear coats are commonly applied to the surface for protection. However, the effectiveness of such application is limited. According to our studies, pre-treatment of varied wood surface prior to the application of clear top coat can effectively extend the protection of lignin from UV light degradation.

Eversorb AQ1,   a blend of UV absorber and HALS, is developed by Everlight Chemical Industrial Corporation (ECIC) specifically for waterborne clear coats. Eversorb SB1, designed for wood pretreatments, can protect lignin from UV light degradation. This paper is a comparison study of accelerated weathering of varied wood with and without SB-1 pre-treatment in different solvents. Design of Experiment (DOE) was used in this study. Our data confirmed that pre-treatment is better than not pre-treatment from UV light degradation. According to solvents test, SB-1 in isopropyl alcohol is better than butyl carbitol. The lignin content of softwoods ranges from about 25%-35%, which is greater than the lignin content of hardwoods, l8%~25%. Theory, SB-1 pre-treatment is significant to protect softwoods. Data indicates that pre-treatment with SB-1 in softwoods (Southern Pine and Douglas fir) is significant effect than hardwoods (Luanta-fir, Selegan Batu and Afrormosia).

 

More Exhibiting Info: http://chinacoat.net/2011/visit_en.htm

 

For more information, please contact us.