Most of the past wood used in the garden, but now there are some bold designers use it in the home, for consumers who just contact how to identify their quality is indeed a problem, here gives a way to help everyone Make your own choice in a simple way.
1. Identify the material quality:
From an intuitive point of view, the finer the wood rings are, the better the materials generally are. Because the annual rings show that the wood grows slowly, simply saying that the wood that is not “squeaky†from the cut surface should be a better wood.
2. Identify the quality of wood processing:
Uniform specifications, small error, good processing quality. You can first look at the specification of the wood as a whole, and there is not much error in correctness and orderliness. Generally thinner plate errors should be less than 0.5-1mm; the overall error of larger size materials should not exceed 2mm. Generally, there is no error in the specifications because of the material under the production line. Hand-processed materials, however, have large errors and can cause construction difficulties. In addition, for the planer material, you also need to look at the quality of the surface planing, smooth and natural is better.
Sun drying life to open the secret of preservative wood
Typical wood outdoor applications
3. Identify the stability of wood preservatives:
The color change of the soaking water is the smallest, and the preservative stability is good. Take samples of different preserved wood (same specifications, same moisture content), soak in the same temperature, the same volume of water, after the same soaking time, observe the color of the water, the color of the smallest changes in the stability of the best preservative . This is not an absolutely accurate method because the concentration of preservatives at the time of processing may also vary widely. After the wood is treated with anti-corrosion treatment, the stability of the different preservatives varies greatly. After the pressurization treatment, the stability in the wood is also greatly different. The use of preservatives with unqualified quality does not have anticorrosive properties to the wood. Too much improvement, on the contrary will cause major potential harm.
4. Identify the quality of wood antiseptic pressure treatment:
The sapwood is fully immersed in preservatives and the surface is clean and even. From the aspect of wood, the quality of preservatives immersed in sapwood is good, because the heartwood part of the tree species has natural durability, but most other species should generally be immersed in preservatives.
5. Screening for the quality of anticorrosion and pressure treatment of wood (high reliability of products with complete supporting documents):
Anticorrosive wood should generally provide supporting documents:
A. Corrosion-proof pressurization production license (because the preservative is used under special protective conditions)
B. Environmental Protection Certificate (ISO14001)
C. Product Quality Certification System Certificate (ISO9001)
D. Inspection certificate (imported product)
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High Purity Level Zinc Phosphate/Pure Zinc Phosphate
PRODUCT NEAME:Zinc Phosphate Zinc Orthophosphate
PRODUCT TYPE:Anti-corrosion Pigment
PRODUCT APPREANCE:White powder
CHEMICAL CALSS: Zn3(PO4)2·2H2O
CAS No．7779-90-0
PRODUCT APPLICATION: Zinc phosphate helps the formation of passivation layer on the metal surface to be protected. Material for anti-corrosion paint used in container, ship and steel structures.Also for electronic materials
CHEMICAL ANALYSIS
★ Product grade: High purity-level
|
TEST ITEM |
UNIT |
REQUIREMENT |
|
Whiteness |
% |
88-93 |
|
Zn(on ignited) |
wt.% |
45-50 |
|
PO4(on ignited) |
wt.% |
46-50 |
|
Moisture |
wt.% |
Max1.5 |
|
Oil absorption |
ml/100g |
25-35 |
|
The PH Value |
- |
6-8 |
|
Residue on sieve (800mesh) |
wt.% |
Max0.5 |
High Purity Level Zinc Phosphate
High Purity Level Zinc Phosphate,Zinc Phosphate Pz20,Epoxy Paint,Anti-Rust Pigment,Pure Zinc Phosphate
shijiazhuang city xinsheng chemical co.,ltd , http://www.xsphos.com