New environmental protection profiles for Handern doors and windows in Wuhan
DATE：2020/5/27 8:32:30 / READ： / SOURCE：This station
New environmental protection profiles for Handern doors and windows in Wuhan
1. Main raw materials
The main raw materials are PVC resin, waste wood powder, titanate coupling agent. www.handern.com Plastic building template
2. Main production equipment
(1) Wood raw material processing part: chipper, chipper, side cutter, grinder, sander, sieving machine, dryer, silo. www.handern.com Plastic building template
(2) Granulation part: screw extruder, high-speed mixer, tractor, cooler, cutting machine, kneader, granulator
(3) Forming part: profile extruder, vacuum setting machine, cooling machine, tractor, cutting machine. www.handern.com Plastic building template
3. Preparation process
The production process of the profiled material can be divided into two steps. The first step is the production of plastic wood pellets, and the second step is to process the plastic wood pellets into various profiles with specific shapes and specifications. www.handern.com Plastic building template
Plastic wood pellet production process: www.handern.com plastic building template
Pulverization of wood materials → activation → drying one → mixing of wood filler and plastics → hot melt extrusion granulation
Production process of environmentally friendly profiles for doors and windows:
Feeding-foaming → vacuum setting-cooling- → drawing-cutting-packing
The foaming temperature of products with different formulas is slightly different. Under normal circumstances, the foaming temperature is about 170 ℃; the cooling method is tap water cooling, and the water temperature is kept at about 5 ℃. www.handern.com Plastic building template
4. Matters needing attention
The key technology for the production of environmentally friendly profiles for doors and windows is to ensure a high filling amount of wood powder to achieve lower production costs and higher performance of products. In addition, in order to ensure that PVC has high fluidity and permeability, and promote PVC to fully bond with wood powder to achieve composite performance, the following key issues must be solved
First, the appropriate wood powder must be used to ensure that the product has sufficient mechanical strength; second, the particle size of the wood powder must be controlled within a certain range to ensure that it can be closely arranged in the wood plastic. Although the filling amount is very high, it does not show a large volume, which can make the wood powder particles well infiltrated by PNC; thirdly, the moisture content of all raw materials should be controlled below 2.0%. The activation energy has a great influence. When the water content is high, the electrostatic activation energy is low. When the water content is low, the electrostatic activation energy is high. The larger electrostatic activity energy can increase the surface charge interaction between PVC wood powder particles. , Promote the fluidity and wettability of PC, promote the uniformity of extruded products, improve the performance of the product; Finally, we must ensure the compatibility of the wood powder and PC, by adding intrinsic powder quality 1% -10% The method of titanate coupling agent or polyacrylate coupling agent to increase compatibility. These coupling agents are formulated into an aqueous solution and added to the wood powder under spray agitation to make it evenly distributed on the surface of the wood powder. The wood powder is dried to a moisture content of less than 2%, and then mixed with PVC, thereby greatly improving the wettability of PVC to the wood powder and improving the bonding force of the interface. www.handern.com Plastic building template
5. Advantages of environmental protection profiles for doors and windows
The environmentally friendly profiles for doors and windows are homogeneous materials, without the inherent defects of wood products such as knots, diagonal texture, cracks, warpage, stains, mildew spots, decay, anisotropic mechanical properties, anisotropic shrinkage, etc. , You can use low-quality wood to prepare environmentally-friendly profiles for doors and windows that have higher performance than high-quality wood. www.handern.com Plastic building template
The environmentally friendly profiles for doors and windows are smooth, flat, and strong. Adding various colorants or coatings can also make various colorful products. In addition, environmentally friendly profiles for doors and windows do not need to be painted, which greatly reduces the post-processing costs.
The doors and windows are mechanically shaped with environmentally friendly profiles at one time, basically no processing residues, not only have the texture and grain of natural wood, but also have the advantages of water resistance, acid and alkali resistance, no insects, no fungi, no pollution, convenient processing and other advantages For the technical performance of wood.
In terms of processing, the environmentally-friendly special-shaped products for doors and windows are the same as logs, which can be nailed, pasted, planed, and glued, and the surface is smooth and delicate, without sanding and paint; if painted, its adhesion is very good.
Author：admin