The production formula adjustment of wood-plastic products needs to take into account multiple factors. The following are some common adjustment directions and key points:
- Wood fiber: The type (such as wood powder, bamboo powder, etc.), particle size and content of wood fiber can be adjusted. Finer wood fiber helps to improve surface smoothness, but may increase costs; changes in content will affect the strength and toughness of the product.
- Plastic resin: Common ones include polyethylene (PE), polypropylene (PP), etc. The properties of different resins are different. You can choose the appropriate type of resin according to product requirements and adjust its proportion to change the rigidity, heat resistance, etc. of the door panel.
- Additives: such as lubricants, coupling agents, antioxidants, UV inhibitors, etc. Appropriately increasing lubricants can improve processing fluidity; coupling agents help to improve the bonding strength between wood fibers and plastics.
- Mixing process: Adjust mixing time, temperature and speed to ensure that the raw materials are fully mixed and evenly mixed.
- Extrusion or injection molding process: Optimize extrusion or injection molding parameters such as temperature, pressure and speed according to equipment and product requirements.
- Strength and rigidity: Increasing the proportion of plastic resin or adding reinforcing fibers (such as glass fiber) can improve strength and rigidity.
- Water resistance: Select suitable plastic resin and add waterproofing agent to improve water resistance.
- Color and appearance: Adjust the color of the door panel by adding pigments or masterbatches, and adjust the formula to improve surface gloss and flatness.
- Under the premise of meeting performance requirements, reasonably select lower-priced raw materials or substitutes.
- Optimize the formula and reduce the use of unnecessary additives.
It should be noted that the adjustment of the formula requires multiple trials and performance tests to find the optimal combination. At the same time, the compatibility of production equipment and the stability of the production process must also be considered.
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