Wet formed mat having improved hot wet tensile strengths

A modified and original silk felt technology, which is applied in the direction of roofing using flexible materials, synthetic cellulose/non-cellulose material pulp/paper, and non-fiber pulp addition, which can solve problems such as deterioration, increase productivity, and improve high temperature Effect of improving wet tensile strength and dry tensile strength

Inactive Publication Date: 2008-11-05
OWENS CORNING INTELLECTUAL CAPITAL LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some conventional adhesives such as urea-formaldehyde resins used to form roofing mats tend to deteriorate under wet conditions, such as in exterior environments where roofing mats would be used

Method used

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  • Wet formed mat having improved hot wet tensile strengths
  • Wet formed mat having improved hot wet tensile strengths
  • Wet formed mat having improved hot wet tensile strengths

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Example 1: Chopped Glassogen Formed Using the Two-Part Adhesive Composition of the Invention High Temperature Tensile Strength Retention of Silk Mat

[0069] The adhesive compositions listed in Tables 2-6 were generally prepared in buckets as described below. Specifically, Comparative Adhesive Composition A (Table 2) was prepared by mixing a urea formaldehyde resin (Bordon FG 472 from Bordon Chemical Co.), a latex adhesive (DL 490NA from Dow Reichhold) and water.

[0070] Adhesive prepreparations for adhesive compositions B-E (Tables 3-6) of the present invention were prepared by mixing urea-formaldehyde resin (Bordon FG 472 from Bordon Chemical Co.), latex adhesive (DL 490NA from Dow Reichhold) and water. mixture. Mix acetic acid and water to form an acidic solution. Aminosilanes A-1100 and Y-9669 (GE Silicones) were added to the acidic solutions shown in Table 3-6 and stirred moderately for hydrolysis. The hydrolyzed aminosilane was then added to the adhesive p...

Embodiment 2

[0111] Example 2: Chopped Glassogen Formed Using the Two-Part Adhesive Composition of the Invention High Temperature Tensile Strength of Silk Mats and Panels

[0112] Using the adhesive compositions A, B and D listed in Tables 2, 3 and 5, respectively, the conventional sizing composition containing one or more film formers, at least one lubricant and a coupling agent The sized Type E chopped strand glass fibers were formed into a chopped glass strand mat on a flat plate former. Chopped strand glass fibers have a length of 1 1 / 4 inches, with a moisture content of 13.22%. The chopped strand mat using Binder Composition A (comparative) was replicated to demonstrate the reproducibility of the forming process and the average data from the two experiments was used as the Binder Composition A data in Tables 9 and 10. The wet tensile strength of 2 inch wide chopped strand mat test samples containing Adhesive Compositions A, B and D was then measured on an Instron tensile test...

Embodiment 3

[0121] Example 3: Chopped Glassogen Formed Using the Two-Part Adhesive Composition of the Invention High Temperature Tensile Strength of Silk Mats and Panels

[0122] The use of adhesive compositions A, B, and D listed in Tables 2, 3, and 5, respectively, facilitates the use of conventional sizing combinations containing one or more film formers, at least one lubricant, and at least one coupling agent The sized E-type chopped strand glass fibers were formed into a chopped glass strand mat on a flat plate former. Chopped glass fibers have a length of 1 1 / 4inches, with a moisture content of 13.69%. The chopped strand mat using Binder Composition A (comparative) was replicated to demonstrate the reproducibility of the forming process and the average data from the two experiments was used as the data for Binder Composition A in Tables 11 and 12. The wet tensile strength of chopped strand mats was determined according to the procedure outlined in Example 2. The experiment...

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Abstract

Wet-laid chopped strand glass mats for use in roofing applications that have improved hot wet tensile strengths are provided. The chopped strand mats are formed by the application or inclusion of at least one coupling agent to the chopped strand mat during a wet-laid mat forming process. The coupling agent may be added to the chopped strand mat as part of a two-part binder composition that includes a binder and at least one coupling agent. Alternatively, the coupling agent may be added directly to the chopped strand mat independent of the binder. As a further alternative, the coupling agent(s) may be added to the white water in the wet-laid mat forming process and incorporated into the formed glass mat via the glass fibers. The binder may be a modified urea-formaldehyde binder, a non-modified urea-formaldehyde binder, and / or a formaldehyde-free binder. The coupling agent(s) may be silane coupling agents and / or reactive siloxanes.

Description

technical field [0001] The present invention relates generally to a chopped strand mat suitable for roofing applications, and more particularly to a chopped glass strand mat having improved high temperature wet tensile strength. Background technique [0002] Glass fibers are commonly used as reinforcements in the building composites industry because they do not shrink or stretch with changing atmospheric conditions. Roofing materials such as roofing paperboard, roofing membranes, and industrial roofing typically consist of a fiberglass mat, an asphalt coating on the fiber mat, and a particle surface layer embedded in the asphalt coating. [0003] To form chopped strand mats suitable for use in roofing materials, glass fibers are first formed by passing a stream of molten glass material through a filamentizing bushing or orifice. Molten glass can be fibrillated by collecting the aggregated filaments into a wrap-like winder or rollers that draw the fibers before collecting an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C25/40E04D5/00
CPCD21H17/47D21H13/40D21H17/49E04D5/02C03C25/16C03C25/40E04D5/00
Inventor J·H·C·李陈亮D·R·米尔斯F·C·奥布莱恩-伯尼尼
Owner OWENS CORNING INTELLECTUAL CAPITAL LLC
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