Environmental protection into focus ecological wood composite material instead of solid wood material

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Eco-wood composites, referred to as wood-plastic composites (WPC), are composites made primarily of wood or cellulose-based materials and plastics. The fiber part was originally based on wood flour as the main raw material. In recent years, it has gradually expanded to other plant fiber materials, such as bamboo powder, rice husk, wheat straw and cotton stalk, which are rich in natural plant fiber materials. The plastic part is made of thermoplastic, mainly polyethylene (PE), polypropylene (PP) and other polyolefins and polystyrene (PS), polyvinyl chloride (PVC) including new materials, recycled materials and a mixture of the two. material. A reversible recycling multi-purpose green environment-friendly material made of various plant fibers and various plastics as main raw materials through a certain process. In practical applications, eco-wood composites can produce products with different properties and shapes according to user and market demand. Since the 1990s, eco-wood composites have been used in various fields as alternative solid wood materials.

I. Classification, performance and use of ecological wood composite materials

Eco-wood composite materials can be divided into polyethylene, polypropylene, polyvinyl chloride, ABS plastic and plasticized wood materials according to different plastics; they can be divided into wire, profile, plate, sheet and foreign material according to different forms of products; According to different manufacturing processes, it can be low foaming, medium foaming, hollow structure and solid material; it can be divided into structural type, decorative type and special type according to different performances.

Because ecological wood composite material has the characteristics of wood and plastic, it has the following excellent characteristics: (1) resistance to insects, corrosion, aging, water absorption, no water absorption and deformation, long life; (2) similar appearance to wood Material, better dimensional stability than wood, no cracks, warpage and other defects, no wood scars; secondary processing similar to wood, can be cut, pasted, fixed with metal connectors; (3) smooth surface It is flat, sturdy, and can suppress the three-dimensional pattern and other shape requirements. It can add various coloring agents or coatings to produce various colorful products with good decorative effect. (4) It has higher hardness than plastic, has the processability of thermoplastics, can be reused and recycled, is also biodegradable, and is environmentally friendly (table physical properties of ecological wood composites).

Eco-wood composites are widely used in building products, such as flooring, siding, building formwork, door and window profiles, guardrails, blinds and roofing panels; in the automotive industry, such as interior trim panels, driver glove boxes, Spare tire cover, seat backing, roof lining, etc.; packaging and transportation, furniture, garden landscape, interior decoration, office equipment and sports equipment.

Second, the application of ecological wood composite materials in the field of furniture

In recent years, with the strengthening of environmental awareness and the shortage of energy shortages, ecological wood composite materials have gradually become one of the materials for furniture manufacturing, and have received global attention. However, due to the lack of necessary communication and understanding between the ecological wood industry and the furniture industry, it is still a long time to promote the large-scale promotion of ecological wood furniture. Nevertheless, the development of ecological wood furniture is imperative. Exploring the characteristics of ecological wood composites and their current application in the furniture market are mainly concentrated in the following areas:

1) Outdoor furniture

Because the ecological wood composite material has good weather resistance and strong aging resistance, the ecological wood furniture has a long service life in the outdoor. From an economic point of view, eco-wood composites have low loss, no paint, and can be maintenance-free. Therefore, eco-wood outdoor furniture has been recognized by many countries and is gradually replacing the use of wood in outdoor furniture.

2) Bathroom furniture

Eco-wood composites have excellent water and insect-repellent properties, which determine their unique properties in wet environments. Japan's EINEngineering has also developed an ecological wood composite with antibacterial properties, which greatly accelerates the pace of eco-wood bathroom furniture. At present, ecological wood composite materials are mainly used in bathroom furniture such as saunas, bathtub racks, washbasin racks, changing wardrobes and changing stools. With the extensive use of bathroom furniture, eco-wood bathroom furniture has a wider market.

3) Kitchen cabinet furniture

Eco-wood composites have excellent waterproof performance, flame retardancy, surface oil resistance, easy to clean and non-toxic, making them a place in the current high-priced kitchen. At present, manufacturers have begun to produce ecological wood kitchen cabinets. As people begin to use them in large quantities, it can be predicted that ecological wood kitchen cabinets will become the development trend of kitchen cabinet furniture in the future.

4) Table and stool furniture

Eco-wood composite material has the texture of natural wood and beautiful wood grain. It has a lower bending deformation temperature than wood, can be easily bent and can be connected by hardware, which makes the ecological wood furniture design get bigger. space.

Third, the application of ecological wood composite materials in interior decoration

At present, people are increasingly demanding interior decoration. The wooden materials are not limited to the living room and bedroom floor. In order to meet the psychological needs of people advocating nature and returning to basics, the application of ecological wood composite materials in interior decoration is also becoming more and more diverse. Here, the application of several ecological wood interior materials is introduced:

1) Ecological wood mouldings and decorative panels

Ecological wood mouldings and decorative panels, with all the installation properties of wooden decorative panels and strips, and no formaldehyde is a green environmentally friendly material. It has been thoroughly tested by the national environmental protection department to solve the problem of decoration pollution and toxic gases. . The decorative wood has a strong sense of wood, which can print the color and wood grain of various tree species, eliminating the trouble of color difference.

2) Ecological wood flooring

Internationally regarded as the 21st century innovative technology of polymer ecological wood flooring, the combination of healthy and comfortable living, green, beautiful, and convenient decoration, the up-and-coming has been welcomed by the decoration enterprises and heads of households, become indoor decoration protagonist. Eco-wood composite flooring has good performance, moisture and water resistance, acid and alkali resistance, tasteless, fungistatic, antistatic, anti-mite and paint-free. It is not only used in home, but also used in some public places.

3) Ecological wooden doors and windows

The production of ecological wood door and window profiles plays an important role in the use of ecological wood composite materials. The ecological wood doors and windows have a quick-loading structure, which saves time and labor, and can print various wood grain films on the surface of the ecological wooden door. There are various kinds of wood such as cherry wood, eucalyptus, and ash, which can be matched with different colors. Its products have both realistic and solid wood resistance, as well as water and corrosion resistance, anti-mite and mildew resistance, sound insulation, heat preservation and flame retardancy, and environmental protection (without formaldehyde).

The above is just the cornerstone of eco-wood composites used in the furniture and interior decoration industry. As a new type of composite material, it has brought new opportunities to the furniture and interior decoration industry. As ecological wood composite materials have no adverse effects on the human body and the environment, and meet the requirements of sustainable development, it will become the mainstream and direction of development. However, we also noticed that there are still some problems to be solved in ecological wood composites, such as surface scratch resistance, creep resistance and special joints for ecological wood composites, which require multi-disciplinary and multi-disciplinary people to work together. .

With the gradual recognition and use of ecological wood composite materials, the application of new ecological wood composite materials and environmental protection materials in furniture and interior design, to give new features and connotations of products, then it will have a broader application prospects.

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