| In the interior decoration and furniture manufacturing industry, wood cannot be completely replaced by other materials. The main reason is that wood has unique design features. In addition to the beautiful texture, it is more important that it has special luster, color and texture. In the past, research on wood properties and wood modification was mainly qualitative research, and most of the research objects were mainly solid wood . In fact, in the furniture and interior decoration industry, the use of solid wood is very limited, and A large number of wood-based panels with secondary surface processing are used . Among the surface decoration materials of wood-based panels, thin wood and thin wood are the most commonly used, high-grade appearance and most acceptable to consumers . Quantifying the surface characteristics of wood, which will greatly facilitate the computer simulation design and interior decoration simulation design of wood products. |
1 Materials and methods
1 . 1 material
Choose from 6 kinds of wood in the most common tree species in furniture and interior decoration, and plywood with its thin wood veneer. These 6 species are willow, ash, beech, eucalyptus, maple and rosewood. The tangential direction is the chord direction, and the surface is sanded with water sandpaper No. 200.
The surface of the solid wood board and the surface of the micro-thick wood were tested for gloss using a domestic DZ-type gloss tester. The DL UX color comparison system was used to analyze the above-mentioned tree species in different use states, using the color of Albert H. Munsell. Department  records. 2 Results and analysis 2.1 Solid wood and meager wood luster (see Table 1) Wood luster refers to the total reflectance (R) of the wood surface to light. Its formula is R = (R1 + R2 ) / 2 , where: R1 is the reflectivity of the incident light perpendicular to the grain direction; R2 is the reflectance of the incident light parallel to the grain direction.
Table 1 Comparison of the luster of solid wood and meager wood of several common tree species. Wood type sloppy wood willow (import) 0 . 2 2 1 0 . 2 3 8 Ash (Northeast) 0 . 3 0 0 0 . 3 2 7 Beech (import) 0 . 664 0 . 693 æ¤´æœ¨(ä¸å›½) 0 . 462 0 . 496 Maple (domestic) 0 . 517 0 . 553 Pear (domestic) 0 . 580 0 . 601It can be seen from Table 1 that: (1) the reflectivity of the wood is different, regardless of the species of wood, whether it is solid wood or meager wood, the reflectance is from small to large, followed by Liu Yan < æ›²æŸ³ <æ¤´æœ¨ <æž«æœ¨ <èŠ±æ¢¨ <Beech (2) The surface of the micro-thin wood surface coated with the surface of the wood-based board is higher than the surface of the solid wood board, which is about 8% higher. The reason is that the micro-thin wood penetrates into the fine pores of the material during the coating process. The flatness of the board surface is increased, and at the same time, the surface of the rubberized material after curing has high reflectivity, and the gloss is also improved.
In the field of interior decoration and furniture manufacturing, people often pursue the high softness effect of the wood surface. Obviously, solid wood materials are more ideal. For example, if the wood-based panel is made of wood, high-soft paint should be used and the surface should be "de-lighted".
2 . 2 color contrast between solid wood and meager wood
(1) The heart and sapwood are of different colors, the heartwood is deeper, the sapwood is lighter, the early and late materials are different, the early wood is lighter, and the late wood is darker; (2) the solid wood is similar in color to the meager wood surface. However, the purity of the latter is reduced. The main reason is that the micro-thin wood has an organic solvent penetration during the pasting process, which affects the color of the wood itself .
When using computer simulation technology to simulate the color of the wood surface, the data in Table 2 can be used to obtain satisfactory results. When the surface of the wood has coatings such as paint, the surface color is affected. When performing computer simulation, it can be filtered according to the actual situation. Color processing. 3 Conclusions and discussion (1) The color effect of wood of different tree species is very different. The wood of the same species also shows different light color effects under different conditions of use. (2) Wood is a special kind. Natural materials, some of the processing methods used in the process may affect the original surface characteristics of the wood, should be avoided, especially for precious tree species. (3) The application of wood in various designs has become more and more extensive. The research field of its material properties should be expanded accordingly. In addition to the physical and mechanical properties that people have paid attention to in the past, the research on its surface properties and decorative properties should be strengthened, and should be quantified as much as possible to adapt to the development of furniture and interior decoration. .
TPU (Thermoplastic polyurethanes) is a thermoplastic polyurethane elastomer rubber. (60HA-85HD), wear-resistant, oil-resistant, transparent, good elasticity, in the daily necessities, sporting goods, toys, decorative materials and other fields have been widely used in the field of polyester and polyester, Halogen-free flame retardant TPU can also replace the soft PVC to meet more and more areas of environmental requirements.The so-called elastomer refers to the glass transition temperature is lower than the room temperature, elongation at break> 50%, external recovery after recovery is better polymer materials. Polyurethane elastomers are a special category of elastomers. The polyurethane elastomers have a wide range of hardness and a wide range of properties. Therefore, polyurethane elastomers are a kind of polymer material between rubber and plastic.
Can be heated plasticized, chemical structure is not or rarely cross-linked, the molecules are basically linear, but there is a certain physical cross-linking. This type of polyurethane is called TPU.
The main features of TPU are:
Hardness range: by changing the TPU reaction components of the ratio, you can get different hardness of the product, and with the increase in hardness, its products still maintain good flexibility and wear resistance.
High mechanical strength: TPU products carrying capacity, impact resistance and shock absorption performance.
Cold resistance highlights: TPU glass transition temperature is relatively low, at minus 35 degrees still maintain good flexibility, flexibility and other physical properties.
Good processing performance: TPU can be a common thermoplastic materials processing methods, such as injection molding, extrusion, rolling and so on. At the same time, TPU and some polymer materials can be co-processing performance of complementary polymer alloy.
Oil, water, resistant to mold.
Good recycling efficiency.
TPU is a
thermoplastic polyurethane, polyester and polyether type, it is a wide
range of hardness (60A-85D), wear, oil, transparent, good elasticity, in
daily necessities, sporting goods, toys, decorative materials and other
fields are widely Application, halogen-free flame
retardant TPU can also replace the soft PVC to meet the environmental
requirements of more and more areas.
Tpu Leather,Tpu Synthetic Leather,Environmental Tpu Leather,Tpu Leather For Sofa
Dongguan Mulsanne Leather Company Ltd. , https://www.mulsanneleather.com