Methods for making glass fiber reinforced materials
A glass fiber and fiber technology, applied in the field of distributable adhesives reinforced with glass fiber, can solve problems such as inability to coat, block metering holes, etc., and achieve the effects of reducing solvent emissions, improving productivity, and smoothing surfaces
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Embodiment 1-11
[0060] Eleven adhesive compositions were prepared and evaluated to demonstrate the effect of varying fiber content and tape thickness on tape performance.
[0061] The preparation process of adhesive composition is as follows:
[0062] 100 parts by weight of isooctyl acrylate (IOA) and acrylic acid (AA) are listed in the monomer ratio in Table 1 with 0.10% by weight of acryloxybenzone (ABP) crosslinking agent (with the IOA of 75 / 25 parts by weight / ABP solution form), 0.05% by weight chain transfer agent (carbon tetrabromide, CBi 4 ) and 1.0% by weight of antioxidant (octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, trade name IRGANOX 1076, purchased from Ciba-Geigy, Ardsley, NY )mix.
[0063] A high conversion slurry having a reduced molecular weight polymer molecular weight of about 700,000-1,000,000 is produced. The final slurry conversion was about 20% and the viscosity was about 3500 centipoise.
[0064] Add glass fibers (16 microns in diameter, 0.25 inches...
Embodiment 12-14
[0071] Three adhesive compositions were prepared and evaluated to demonstrate the effect of varying acrylic acid content on tape properties.
[0072] As with Examples 1-11, using the compositions listed in Table 2, the adhesive compositions of Examples 12-14 were prepared.
[0073] The bulk polymer was extruded at 350°F in an extruder equipped with a rotating rod die to an extruded thickness of 2 mils.
[0074] The components used and their amounts are listed in Table 2. Tape samples were tested for shear adhesion, 90° peel adhesion and dispensability on stainless steel (SS), acrylonitrile butadiene styrene (ABS) and polypropylene (PP) using the methods described above. The results are listed in Table 2.
[0075] implement
[0076] From these data, it can be seen that good dispensability can be obtained with widely varying concentrations of acrylic acid.
Embodiment 15-17
[0078]Three adhesive compositions were prepared and evaluated to demonstrate the effect of a tackifier available from Hercules, Wilmington, DE under the trademark FORAL 85, on the tape properties of both crosslinked and uncrosslinked tapes.
[0079] As in Examples 1-11, using the components listed in Table 2, the adhesive compositions of Examples 15-17 were prepared, except that Examples 15 and 16 were not irradiated after extrusion, and Example 17 High-intensity UV irradiation provided by a mercury arc lamp after extrusion, with a total ultraviolet (UV) energy of 900mJ / cm 2 (NIST). The tackifier was added to the extruder with the bulk polymer and the mixture was extruded at 350°F in an extruder equipped with a rotating rod die to a thickness of 5 mils.
[0080] The components used and their amounts are listed in Table 3. Tape samples were tested for cut adhesion, 90° peel adhesion on stainless steel (SS) and dispensability using the method described above. The results are ...
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Abstract
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