Sizing compositions for wet-use chopped strand glass fibers
A technology of chopped glass fiber and sizing composition, which is applied in the direction of building elements, building structures, hydraulically setting material layered products, etc., and can solve problems such as failure of fiber gypsum boards
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Embodiment 1 and 2
[0073] Examples 1 and 2 illustrate exemplary sizing compositions according to the general inventive concept disclosed herein. The sizing compositions were prepared according to the formulations given in Table 1. The amounts of materials used to prepare the sizing compositions are listed in kg per 1000 kg of sizing composition. The sizing composition was prepared in the following manner. Add deionized water and acetic acid to the vessel. The silane coupling agent (A-1100) was then added to the vessel with stirring to hydrolyze the silane coupling agent (A-1100). After hydrolysis of the silane coupling agent (A-1100), polyvinylpyrrolidone film former (PVP K-90), lubricant (Lubesize K12) and surfactant (PEG400MO) were added and mixed to form a sizing composition. The sizing composition is then diluted with water to achieve the desired total solids content (mixed solids). The final sizing composition is then mixed to obtain a homogeneous solution.
[0074] Table 1
[0075] ...
Embodiment 3
[0078] In this example, a series of fiber feed tests were performed to evaluate the use of fiberglass in accordance with the general inventive concepts disclosed herein as compared to commercially available WUCS glass fibers sized with conventional sizing compositions. Fiber Flow Rate and Fiber Flow Consistency of WUCS Glass Fibers Sized with Exemplary Sizing Compositions.
[0079] The fiber flow rate and fiber flow consistency were measured by feeding WUCS glass fibers through a Schenck AccuRate SolidsFlow feeding system. The first feed test was performed by feeding WUCS glass fibers at a target rate of 4 lbs / min and recording the motor magnitude required to maintain the target rate. A second feed test was performed by feeding WUCS glass fibers at a fixed motor value of 12.64 mA and measuring the amount of fiber fed per minute over a 20 minute time period. A third feed test was conducted by feeding WUCS glass fibers at a target rate of 14 lbs / min and recording the motor volu...
Embodiment 4
[0090] In this example, the fiber bulk densities of Gyp-39 WUCS glass fibers and CE1 WUCS glass fibers from Example 3 were qualitatively compared. as in Figure 8A Fill the hopper with 200 lbs of CE1WUCS fiberglass as shown in . as in Figure 8B The same feed hopper was also filled (in the same manner) with 200lbs of Gyp-39WUCS fiberglass as shown in . Figure 8A and Figure 8B The comparison clearly shows that the Gyp-39WUCS glass fibers are much denser packed than the CE1WUCS glass fibers. The dense packing of the Gyp-39WUCS glass fibers indicated significantly better bundle integrity of the Gyp-39WUCS glass fibers compared to the CE1WUCS glass fibers, which resulted in better fiber flow and feeding.
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Abstract
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