We all know that WPC Laminated Board plays a vital role in our production and life, so what is the impact of plastic types on WPC Laminated Board? Next, let us take a look.

Here is that the content list:

• WPC Laminated Board comparison PVC sheet

• Benefits of adding coupling agent MDI

WPC Laminated Board comparison PVC sheet

When the hot-pressing temperature is 180 ℃, when HDPE is used as the adhesive, the performance of the WPC Laminated Board composite board is higher than that of the board made of PVC as the adhesive. Among them, the elastic modulus and bonding strength of the board is the performance difference is the most obvious. The static flexural strength of the HDPE board is 3% higher than that of the PVC board. The elastic modulus of WPC Laminated Board is 1.92 times that of PVC board, and the bonding strength of WPC Lamination Board is 1.23 times that of PVC board. Therefore, WPC Laminated Board adhesive is made the performance of the board is better than that of the board made of PVC. It can be seen that the bonding strength of the two types of boards is greater than 1.5 MPa, which is greatly improved compared with traditional plywood. Studies have shown that wood is a hydrophilic material, while WPC Laminated Board is a hydrophobic material. The two materials are directly mixed for hot pressing without treatment. The interface bonding effect of the two materials is very poor, so they are hot pressed. Forming may not meet national standards, but the addition of coupling agent MDI can solve this problem well.

Benefits of adding coupling agent MDI

On the one hand, MDI molecules can improve the compatibility between HDPE/PVC molecules and wood, thereby enhancing the performance of the WPC Laminated Board; on the other hand, MDI can change the HDPE and PVC matrix through graft copolymers during the reaction process. It makes the connection between materials closer, and the overall mechanical properties are enhanced. The water-absorbing thickness expansion rate is compared. When the two plastics are used as adhesives, the water-absorbing thickness expansion rate of the sheet is almost the same, both about 3%. This is mainly because plastics are all water-repellent materials and hardly absorb water. The main factor affecting the expansion rate of water absorption thickness is wood. The preparation process is to spread WPC Laminated Board film or PVC film respectively between two layers of veneers, and the adjacent veneers are superimposed vertically and orthogonally. The mass fraction of the MDI coupling agent is 2%, and it is evenly coated on both sides of the film. The paved slab is first subjected to hot pressing treatment, the hot-pressing temperature is 160, 180, 200 ℃, and the hot-pressing time is 1.2 min/mm. After hot pressing, it is quickly sent to the cold press for cooling and shaping. The cold pressing pressure and hot-pressing pressure of the WPC Lamination Board are both 1.5 MPa, and the post-processing time is 15 minutes.

HANGZHOU JIAYING TRADE CO.LTD, specializing in the production of PVC board with its excellent quality, has continuously sold for more than ten years worldwide, such as United States, Europe, Vietnam, Thailand, Malaysia, Indonesia, the Philippines, India, Iran, Saudi Arabic, Taiwan, Fiji, etc. The above is related to the impact of plastic types on wood-plastic composite panels. If you are interested in WPC Laminated Board, you can consult our website https://www.hzpvcboard.com/.