Method for detecting floor substrate water absorption expansion rate and water absorption height

Abstract

The invention discloses a detection method for floor substrate water absorption expansion rate and water absorption height, which comprises the following steps: (1) according to the same order, the same specifications, and the same date, a sheet of floor substrate is extracted, two test pieces of the floor substrate with the 150 mm multiplied by 50 mm are prepared, and then are set aside for 24 hours; (2) the height of the 50mm upward from the bottom of the test piece is lined out with an immersion line; and then the thickness of the three points being marked at the edge of the test piece mark is measured; (3) the test piece is soaked in water for about three hours; the test piece is taken out every half hour; the thickness of the three points at the edge of the test piece and the height of the moisture rising of the edge are measured and recorded; and then the relative expansion rate of the water absorption of the floor thickness is calculated and is compared with the standard value of the invention to determine whether the floor is qualified or not. In the method, the project which measuring the water absorption of the test piece is added, thus further perfecting the detection method. The method changes the original 24 hour soaking of the test piece into the 3 hour soaking, thus shortening the waiting time of detecting and increasing the working efficiency of the test piece detection of the floor substrate.

Description

technical field [0001] The invention relates to a detection method for a composite floor, in particular to a detection method for the water absorption expansion rate and water absorption height of the edge of a composite floor base material, and belongs to the technical field of architectural decoration. Background technique [0002] Composite flooring is more and more widely used for its advantages of high simulation, durability, low price and high quality. The base material of composite flooring is mainly medium and high density fiberboard. Due to the gaps inside the medium and high density fiberboard, although the The balance layer on the bottom surface and the wear-resistant layer on the top surface have been waterproofed, and the tenons and grooves of the locks around them are also coated with a waterproof layer. However, because the locks are not covered with a protective layer, water is easy to Penetrates into the substrate from the joints of the composite floor, caus...

AI Technical Summary

Problems solved by technology

In practical application, the 24-hour water absorption expansion index of some composite floor base material specimens with poor quality meets the industry standard, but the water absorption speed of the composite floor base material specimens is very fast, reaching the state of water absorption saturation in about 2 hours after absorbing water , and then prolonging the soaking time, the composite floor base material specimen will not absorb water further; at the same time, the position where the composite floor base material specimen absorbs water and expands is not in the center of the floor, but concentrated on the edge of the floor,

Images