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A kind of hollow sandwich panel with honeycomb structure core panel and preparation method thereof

A honeycomb structure and hollow technology, applied in the field of materials, can solve the problems of easy corrosion, poor water resistance, high quality, etc., and achieve the effect of high porosity and uniform pore size distribution

Active Publication Date: 2016-12-07
LIAONING LIAOJIE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The core boards of the existing honeycomb structure sandwich panels mainly include: one is the core board made of paper and wood, the main defects are poor water resistance, poor mechanical performance, and poor practicability; the other is the core board made of metal, The main defect is that the quality is large and it is easy to corrode

Method used

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  • A kind of hollow sandwich panel with honeycomb structure core panel and preparation method thereof
  • A kind of hollow sandwich panel with honeycomb structure core panel and preparation method thereof
  • A kind of hollow sandwich panel with honeycomb structure core panel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) The PP resin is spun into PP hollow fibers with a diameter of 0.1 mm by means of melt-spinning spinning with an annular hollow spinneret with a diameter of 0.1 mm;

[0039] (2) Dip the polyurethane glue at 500g / m 2 Fix the PP hollow fiber into a hollow fiber bundle with a circular cross-section and a porosity of 70%, surround the hollow fiber bundle with a baffle, and apply 200N / mm evenly to the surface of the baffle. 2 The force lasts for 24 hours;

[0040] (3) After the polyurethane glue is solidified, place the firmly bonded hollow fiber bundles in an environment filled with liquid nitrogen, and perform transverse brittle fracture on the upper and lower sides of the hollow fiber bundles according to the thickness of the core plate of 50mm, and remove the upper and lower parts of the truncated , the upper and lower surfaces of the remaining middle part will maintain the hollow channels of the hollow fibers intact, that is, a circular core material of the sandwich...

Embodiment 2

[0043] (1) A C-shaped hollow spinneret with a spinneret aperture of 10 mm is used to spin the PP resin into a PP hollow fiber with an aperture of 10 mm by the method of melt spinning;

[0044] (2) Dip the polyurethane glue at 500g / m 2 Fix and glue the PP hollow fiber into a hollow fiber bundle with a circular cross-section and a porosity of 20%, and surround the hollow fiber bundle with a baffle, and apply 200N / mm uniformly to the surface of the baffle 2 The force lasts for 24 hours;

[0045] (3) After the polyurethane glue is solidified, place the firmly bonded hollow fiber bundles in an environment filled with liquid nitrogen, and perform transverse brittle fracture on the upper and lower sides of the hollow fiber bundles according to the thickness of the core plate of 50mm, and remove the upper and lower parts of the truncated , the upper and lower surfaces of the remaining middle part will maintain the hollow channels of the hollow fibers intact, that is, a circular core ...

Embodiment 3

[0048] (1) The PET resin is spun into a PET hollow fiber whose aperture is 1 mm by solution spinning with a spinneret aperture of 1 mm in an annular hollow spinneret;

[0049](2) Dip the impregnating glue at 550g / m 2 The amount of glue used is to fix the PET hollow fiber into a hollow fiber bundle with a square cross-section and a porosity of 30%, surround the hollow fiber bundle with a baffle, and apply 250N / mm evenly to the surface of the baffle 2 The force lasts for 24 hours;

[0050] (3) After the impregnation gel is solidified, place the firmly bonded hollow fiber bundles in an environment filled with liquid nitrogen, and carry out transverse brittle fracture on the upper and lower sides of the hollow fiber bundles according to the thickness of the core plate of 30mm, and the upper and lower parts of the truncated After removal, the upper and lower surfaces of the remaining middle part will maintain intact hollow fiber hollow channels, that is, a square core material of ...

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Abstract

The invention belongs to the technical field of materials, and relates to a hollow sandwiched plate and a preparation method thereof. The hollow sandwiched plate comprises a cellular core plate, which comprises hollow fibers bonded together side by side; an upper side and a lower side of the core plate are covered with a metal sheet or a polymeric material sheet. The hollow plate manufactured from the core plate provided by the invention has basic properties of a general hollow plate, such as heat insulation, insulation, sound insulation, and light weight. The method employed by the invention is simple and convenient, and the hollow sandwiched plate prepared by the invention can be endowed with more properties through selection of hollow fibers made of different materials.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a hollow sandwich panel and a preparation method thereof. Background technique [0002] The sandwich panel has beautiful appearance, bright color and good overall effect. It integrates load-bearing, heat preservation, fire prevention and waterproof, and does not need secondary decoration. It is a kind of widely used, especially suitable for temporary facilities on construction sites such as offices, warehouses, Fences, etc., also reflect the civilized construction of modern construction sites, especially in terms of rapid installation and use, and have obvious advantages in terms of detachable and reusable materials, and the turnover and reuse index of materials, which greatly reduces the cost of temporary facilities on construction sites. It will be an indispensable new lightweight building material. [0003] The core boards of the existing honeycomb structure sandwich panels m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B3/12B32B27/06
Inventor 韩笑
Owner LIAONING LIAOJIE SCI & TECH
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