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WPC Terminology

   Date:2015-09-14  Views:239
WPC, namely WPC (Wood- Plastic Composites, WPC), is booming at home and abroad in recent years, a new class of composite materials, refers to the use of polyethylene, polypropylene and polyvinyl chloride, etc., instead of the usual resin adhesive, and more than 35% -70% of wood flour, rice husk, straw and other plant waste wood fibers are mixed into a new material, and then the plastic processing extrusion, molding, injection molding process to produce the sheet or profiles. Mainly used in building materials, furniture, logistics and packaging industries. Plastic and wood powder by mixing after hot extruded sheet, called WPC sheet extrusion.

Composition

The main raw material (wood): wood, bamboo powder, rice husks, peanut shells, straw.
Plastic composition: Polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PPS), polystyrene (PS) and the like.
Additives: coupling agents, light stabilizers, pigments, lubricants, fungicides, and foaming agents.

Additives Application examples


Heat stabilizers prevent polymer degradation during processing phenolic resin (major) and phosphite (minor)
Ultraviolet light stabilizers to prevent damage to the polymer HALS (hindered amine light stabilizer); UV absorbers
Coupling agent interface combined with wood, increase strength, reduce water, keeping the mechanical properties of maleic anhydride modified polyolefin.
Lubricants to improve the flow performance, increase productivity, reduce edge wear zinc stearate, vinyl and stearamide.
Landscaping products pigment surface, and a certain dye mixing UV protection.
Insecticide to prevent the erosion of bacteria and fungi isothiazole substances.
Blowing agents reduce material density and product weight exothermic (azo carbon amine), endothermic (sodium bicarbonate).

Performance of WPC

1. The product has the same processing performance wood, nails, drilling, cutting, bonding, nails or bolts to connect fixed, the surface smooth and delicate, without sanding and painting, its good paint adhesion, also based on personal like painting.
2. Product isocyanide have better physical properties than wood, better stability than timber size, noise can produce cracks, warping, no wood knots, twill, adding a coloring agent, a coating or composite surface can be made of colorful a variety of products, so no regular maintenance.
3. will be able to a variety of specifications, size, shape, thickness and other needs, which also includes a variety of design, color and grain products, give customers more choices.
The product has a fireproof, waterproof, does corrosion, resistant to moisture, will not be moth-eaten, and excellent performance not long fungi, acid, non-toxic, pollution-free, low maintenance costs.
5. The product has a similar appearance of wood, plastic hardness than high, long life, thermoplastic molding, high strength, and energy conservation.
6. Products are hard, lightweight, insulation, smooth surface, free of formaldehyde and other harmful substances, non-toxic, non-polluting.
 
 
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