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Gypsum products with fortified glass fiber mat

A technology of glass fiber mat and glass fiber, which is applied in the field of composition of glass fiber mat, and can solve problems such as not being able to solve

Inactive Publication Date: 2017-02-22
USG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although these methods fill the voids of the fiberglass mat, they do not solve various problems caused by brittle glass fibers, such as suboptimal nail pull strength

Method used

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  • Gypsum products with fortified glass fiber mat
  • Gypsum products with fortified glass fiber mat
  • Gypsum products with fortified glass fiber mat

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0044] Mix Na in the dish 2 SO 4 X10H 2 O(0.1M) and CaCl 2 (0.1M) solution. The reaction product is CaSO 4 X2H 2 O (gypsum) and NaCl. It was observed that the mixture was cloudy within about 3 minutes due to the crystallization of gypsum. Just after mixing, immerse a 6-inch x 6-inch piece of fiberglass mat in the mixture and soak for 3 minutes. After the saturation reaction is completed, the glass fiber mat is dried by one of the following methods:

[0045] -Method A: 1 hour at 110°F; or

[0046] -Method B: In an oven at 400°F for 3 minutes to dehydrate the gypsum crystals into insoluble CaSO 4 .

[0047] A sample gypsum panel was then prepared using glass fiber mat. A control gypsum panel was prepared using glass fiber mat that was not treated with the concentrated gypsum solution.

[0048] All sample gypsum panels were subsequently subjected to nail pull tests. The results from these tests are reported in Table 1, where samples 5-1 and 6-1 represent glass that has been saturate...

example 2

[0050] The glass fiber mat saturated with calcium sulfate crystals was prepared as described in Example 1. A piece of glass fiber mat without salt crystal treatment was used as a control. Use 3M Super 77 spray adhesive to glue the untreated glass fiber mat and the glass fiber mat saturated with calcium sulfate crystals to the paper-faced gypsum board for nail pull test.

[0051] image 3 A 12-inch x 12-inch gypsum board with two pieces of 5” x 10” glass mat is shown: untreated fiberglass mat is on top ( image 3 A), glass fiber mat saturated with calcium sulfate crystals at the bottom ( image 3 B). Two gypsum wallboards undergo a nail pull test.

[0052] image 3 A and image 3 The three black circles in each glass fiber material in B indicate the location of the nail pull test. The greater the force applied to pull the nail through the gypsum panel, the stronger the fiberglass mat. These nail pull tests were performed on multiple samples to provide statistical information on t...

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Abstract

A gypsum product with a fortified glass fiber mat is provided in which the glass fiber mat is strengthened by crystallization of salt crystals on the glass fiber mat prior to the glass fiber mat use in the gypsum product. Methods for making a glass fiber mat saturated with salt crystals and gypsum products with the glass fiber mats are provided as well.

Description

[0001] Cross references to related applications [0002] This application claims the priority rights of US application 14 / 306,859 filed on June 17, 2014, the entire content of which is incorporated herein by reference. Technical field [0003] The present invention provides a gypsum product having improved nail pull strength and prepared as a reinforced fiberglass mat, and a composition and method for manufacturing the reinforced fiberglass mat. Background technique [0004] Various gypsum products, including wall panels, ceiling panels and tiles, are commonly used in the construction industry. Many of these gypsum products are prepared by preparing an aqueous gypsum slurry with calcined gypsum (calcium sulfate alpha hemihydrate, calcium sulfate beta hemihydrate and / or anhydrous calcium sulfate), and shaping the slurry , And then harden the slurry by rehydrating the calcined gypsum into gypsum (calcium sulfate dihydrate). [0005] Gypsum panels can be made by sandwiching gypsum slur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/14B32B5/26B32B13/14C03C25/16C03C25/52C03C25/64
CPCB32B5/145B32B5/26B32B13/14C03C25/16C03C25/52C03C25/64B32B2250/03B32B2250/40B32B2255/02B32B2255/20B32B2260/02B32B2260/023B32B2260/044B32B2262/101B32B2607/00B32B2419/00Y10T442/2008Y10T442/2525Y10T442/2992Y10T442/665B32B5/14
Inventor A·李N·阿尔达巴伊贝
Owner USG CORP