New environmental protection profiled materials for Wuhan modern doors and windows
DATE：2020/9/1 9:00:09 / READ： / SOURCE：This station
New environmental protection profiled materials for Wuhan modern doors and windows
1. Main raw materialsPVC resin, waste wood powder, titanate coupling agent. www.handern.com Non-woven equipment
2. Main production equipment
(1) Wood material processing part of chipper, cutting machine, cutter, crusher, beater, screening machine, dryer, silo. www.handern.com Non-woven equipment
(2) The granulation part: screw extruder, high-speed mixer, chapter machine, cooler, cutter, kneader, pelletizer. www.handern.com Non-woven equipment
(3) Forming part of profile extruder, vacuum setting machine, cooling machine, tractor, cutting machine. www.handern.com Non-woven equipment
3. Preparation process
The production process of the profiled material can be divided into two steps. The first step is the production of green plastic wood pellets. The second step is to process the green plastic wood pellets into profiles of various specific shapes and specifications. www.handern.com Non-woven equipment
The production process of green plastic wood pellets: pulverization of wood materials → activation of one thousand dry one wood filler and plastic mixing → hot melt extrusion granulation. www.handern.com Non-woven equipment
The production process of the profiled materials for Lvke doors and windows: feeding→foaming→vacuum setting→cooling→traction→cutting→packaging.
The foaming temperature of products with different formulations is slightly different. Generally, 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 Non-woven equipment
4. Matters needing attention
The key technology for the manufacture of profiled materials for Lvke doors and windows is to ensure a high filling amount of wood powder, so as to achieve lower production costs and higher use performance. In addition, in order to ensure that C has high fluidity and permeability, and promote PNC to fully bond with wood powder to achieve composite performance, the following key issues must be resolved. www.handern.com Non-woven equipment
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 the closest arrangement in the wood plastic. Although the filling amount is high, it does not show a large volume, so that the wood powder particles can be well infiltrated by the PNC; third, the moisture content of all raw materials should be controlled below 2.0%. The residual moisture of wood powder has a great influence on the electrostatic activation energy. When the moisture content is high, the electrostatic activation energy is low; when the moisture content is low, the electrostatic activation energy is high. Larger electrostatic activity can increase the surface charge interaction between PVC wood powder particles, promote the fluidity and wettability of FC, promote the uniformity of extruded products, and improve product performance.
Finally, the compatibility of wood powder and PVC must be ensured, and the compatibility can be increased by adding a titanate coupling agent or polyacrylate coupling agent of 1%-10% of the mass of the wood powder. These coupling agents are formulated into an aqueous solution and added to the wood powder under spray stirring to make it evenly distributed on the surface of the wood powder. Dry wood powder to moisture content below 2%
Then it is mixed with PVC to greatly improve the infiltration of PVC to wood powder and improve the bonding force of the interface. www.handern.com Non-woven equipment
Author：admin