A kind of preparation method of refractory lightweight particle and wood-plastic composite board

Abstract

The invention discloses a preparation method of a refractory light particle and wood plastic composite plate. The refractory light particle and wood plastic composite plate is molded through coextrusion of a mold, the mold is provided with a cavity in the length direction, a feed end of the mold communicates with a wood plastic runner of the 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 cavity by virtue of the wood plastic runner through an extruder, the wood plastic material is cooled and molded in the cavity, and a hollow wood plastic frame is formed and is extruded from the discharge end of the mold; and refractory light particles and polyurethane are synchronously and uniformly sprayed into the wood plastic frame in the mold, the refractory light particles are sprayed into the wood plastic frame and are bound with the wood plastic frame by virtue of polyurethane, 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 refractory light particle 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 field of construction, in particular to a preparation method of refractory lightweight particles and wood-plastic composite boards. 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...

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. Foamed polystyrene board, foamed phenolic board, foamed glass and other insulation materials are often formed by wood-plastic frame, then cut rock wool etc. , The filling site is seriously polluted, and the secondary processing process not only greatly increases the production cycle and reduces production efficiency, but also causes a great increase in power consumption and labor costs

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