Do you know how artificial hedges be protected from ultraviolet ray? Let us share the truth hidden within the artificial hedges.Firstly, let us know something about ultraviolet absorbent which plays the key role in the whole course.
The ultraviolet absorbent is that right element absorbing ultraviolet rays, it includes aromatic compounds of benzene ring which can absorb ultraviolet ray. Benzene ring absorb ultraviolet rays energy via resonant interaction, and then transform it into thermal energy or harmless luminous energy which will be released, after that, the molecular structure of aromatic compounds of benzene ring returned to its original condition, this is the whole complete circulation. After one circulation, the ultraviolet absorbent enters new circulation and repeates this procedure again and again without harming itself to realize UV protection purpose.
Now we are familiar with its working procedure, at the same time, we need to know one fact, that is, different ultraviolet absorbent absorbs ultraviolet ray with different wave length, and the wave length of harmful ultraviolet ray that degrade polymer is different, so the choice of aromatic compounds of benzene ring should be considered based on the types of polymer.
With ultraviolet absorbent added in artificial hedges materials during production, artificial hedge can keep its original color for 3 to 5 year till all absorbent exhaust itself. While those hedges without absorbent can only keep its color for 1 year. That is why artificial hedges can go against ultraviolet ray and keep its original color.
Origin from: http://www.fakefence.com/blog/ProView.asp?ProId=140