Composite hollow grid-like flat plate and manufacturing method

Abstract

The invention provides a composite hollow grid-like flat plate and a manufacturing method. Continuous fiber is adopted in a strengthening layer for strengthening the strengthening layer, the strengthening layer is embedded in a template through a pultrusion process and is fused into a whole, and the product performance is improved. Under the situation that the section area is the same, compared with the prior art, the strength of the composite hollow grid-like flat plate is higher. Under the situation that the consistent strength is guaranteed, the section area of the composite hollow grid-like flat plate is smaller so that the weight of the composite hollow grid-like flat plate can be reduced. The continuous fiber is adopted in the strengthening layer for strengthening, firstly, the bending modulus is greatly increased, secondly, the anti-impact performance of the composite hollow grid-like flat plate is effectively improved, thirdly, the rebound resilience is greatly improved, and fourthly, the service life is prolonged. The composite technology is adopted in the manufacturing method, and integral continuity of the continuous fiber is guaranteed not like shearing due to meshing of a screw in the prior art. By adoption of the manufacturing method, structure adjustment is simple and easy, the width can be customized through a die, and cutting can be conducted freely in the length direction.

Description

technical field [0001] The invention relates to the field of building templates, in particular to a composite hollow flat plate and a manufacturing method thereof. Background technique [0002] The slabs used in the original building mainly include wood formwork, plywood, and plastic-coated formwork. The main problem is that the service life is relatively low, generally 3 to 5 times. In addition to the heavy weight of the product itself, it is easy to absorb water, resulting in water absorption and expansion after cement pouring , which will eventually lead to increased product weight, surface cracks, and bulges that directly affect service life, installation efficiency, and use costs. [0003] The existing plastic-coated formwork, due to the production process of injection molding, cannot use continuous long fibers in the production of the formwork, and the length of the fiber directly affects the strength of the product. The ordinary hollow building formwork has a shear ef...

AI Technical Summary

Problems solved by technology

[0002] The slabs used in the original building mainly include wood formwork, plywood, and plastic-coated formwork. The main problem is that the service life is relatively low, generally 3 to 5 times. In addition to the heavy weight of the product itself, it is easy to absorb water, resulting in water absorption and expansion after cement pouring , which will eventually lead to increased product weight, surface cracks, and bulges that directly affect service life, installation efficiency, and use costs

[0003] The existing plastic-coated formwork, due to the production process of injection molding, cannot use continuous long fibers in the production of the formwork, and the length of the fiber directly affects the strength of the product. The ordinary hollow building formwork has a shear effect on the glass fiber due to the engagement of the screw during production. effect, resulting in the longest fiber length of 1 to 2 cm, which cannot be laid along the length or width of the formwork, resulting in the need to increase the cross-sectional area of ​​the product to improve the strength of the product itself.

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