Preparation method of inorganic fiber and wood plastic composite plate

Abstract

The invention discloses a preparation method of an inorganic fiber and wood plastic composite plate. The inorganic fiber and wood plastic composite plate is molded through coextrusion of a mold, the mold is provided with a hollow cavity in the length direction, a feed end of the mold communicates with a wood plastic runner of the hollow cavity, and an outlet of the wood plastic runner faces a discharge end of the mold. The preparation method comprises the steps that a molten wood plastic material is sent into the hollow cavity by virtue of the wood plastic runner through an extruder, the wood plastic material is cooled and molded in the hollow cavity, and a hollow wood plastic frame is formed and is extruded from the discharge end of the mold; and inorganic fibers and a binder are synchronously and uniformly sprayed into the wood plastic frame in the mold, the inorganic fibers are blown to the wood plastic frame and are bound with the wood plastic frame by virtue of the binder, the wood plastic frame is filled, and a filled layer is formed. The invention relates to the field of buildings, and provides the preparation method of the inorganic fiber and wood plastic composite plate. According to the preparation method, procedures can be simplified, and the composite plates are synchronously molded at a time.

Description

technical field [0001] The invention relates to the construction field, in particular to a preparation method of inorganic fiber and wood-plastic composite board. Background technique [0002] Solid clay bricks are often used for traditional building walls, which is not conducive to the protection of cultivated land; at present, wall materials such as aerated concrete blocks and hollow bricks need to be constructed on site, requiring cement wet work, generating a lot of construction waste on site and consuming a lot of labor. , The dimensional accuracy of the wall is also difficult to control, and the construction period is long, ranging from more than half a year to more than one year or even more than two years to complete. [0003] In order to meet the needs of industrialization, ecology, energy saving and green environmental protection of new buildings, Chinese patent CN102650367A provides metal and resin composite co-extrusion profiles with holes or pits, and the metal ...

AI Technical Summary

Problems solved by technology

[0004] Wood-plastic hollow materials can also be used as wall panels. In order to meet the thermal insulation performance, it is often necessary to fill the interior with thermal insulation materials. However, although polyurethane foam and polystyrene foam are easy to process and shape, they aggravate the fire hazard, while filling rock wool and mineral wool , glass wool, expanded perlite and other thermal insulation materials are usually formed by wood-plastic frame, then rock wool, mineral wool, etc. are cut into the shape and size suitable for the wood-plastic inner chamber and filled piece by piece. The pollution is serious, and the secondary processing process not only greatly increases the production cycle and reduces the production efficiency, but also causes a great increase in power consumption and labor costs

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