What are the advantages and disadvantages of poplar board?
1, boxwood is strong, with high compressive strength and strong corrosion resistance in structural mechanics; Moderate strength and compressive strength, suitable for hand carving, generally suitable for carving relief patterns.
2. The sapwood of boxwood is significantly different, the sapwood is dark yellow and the root is dark gray purple.
3. Boxwood is smooth and clear in grain, smooth in plane, beautiful in chord pattern, and has a pattern similar to "Boxwood". Logs can be carved, polished and painted, and can be made into exquisite painted works of art.
4. Boxwood furniture in China is mainly Ming style, with simple design, roundness and fullness, and elegant design style. The decorative design of furniture in Ming dynasty is suitable, and it is suitable quickly, and some decorative designs are just right.
Disadvantages of poplar board
1, boxwood is different from the old one. The defects of boxwood furniture are easy deformation, insect-loving and serious folding. The main disadvantages of old boxwood are old moth-eaten, old cracks, old mortises and tenons.
2. Boxwood furniture that is severely dried in the drying room is not easy to crack, but boxwood is not easy to dry. At present, there are many boxwood boards in the market because of many problems in cost or equipment, the drying treatment of wood is not in place, and the boxwood furniture produced is easy to crack and deform.
What are the waterproof sheets?
There is PVC board: soft material, which can prevent insects; Colored steel tile: it can achieve waterproof and erosion-resistant effect; There is also xps extruded board: made of polystyrene particles heated; EVA waterproof board: it has good tensile plasticity and deformation resistance; There is also extruded polystyrene board: strong impact resistance and good thermal insulation performance. The main contents are as follows:
1, PVC sheet is soft, low in price, insect-proof, heat-insulating and waterproof.
2. Color steel tile is to add a layer of organic chemicals to the thick steel plate to achieve waterproof and anti-corrosion effect. Generally used for the top floor of simple houses, it will not corrode easily even if it is eroded by rain.
3.xps extruded board is made of polystyrene particles as raw materials, supplemented by some auxiliary materials, through a new heating process.
4.EVA waterproof board has good tensile plasticity and deformation resistance. These materials are very common in daily life, and the raw materials used in everyone's sports soles are EAV raw materials, which are wear-resistant and waterproof and have good adjustment effect.
5. Extruded polystyrene board is made of polyethylene by new technology. There is no difference in structural stability, and it can deal with many problems such as water seepage and infiltration well, with strong impact resistance and good thermal insulation performance.