A kind of low-density inorganic fiber reinforcement and preparation method thereof
An inorganic fiber, low density technology, applied in the field of inorganic fiber reinforcement and its preparation, can solve the problems of many overlapping points of fibers, high density of inorganic fiber mat, increase the density and quality of final material, etc. Thermal conductivity, uniform fiber dispersion, effect of reducing thermal conductivity
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[0034] An embodiment of the present invention provides a method for preparing a low-density fiber reinforced body, comprising the following steps:
[0035] Step 1: Put fibers with a diameter of 5-10 μm and a length of 3-15 cm into deionized water to form a fiber suspension with a fiber content of 2-10 g / L;
[0036] Specifically, in the embodiment of the present invention, the fiber may be an inorganic fiber such as glass fiber, quartz fiber, alumina fiber, preferably glass fiber, and the diameter of the fiber is an equivalent diameter;
[0037] In order to obtain inorganic fibers uniformly dispersed in three-dimensional directions, in the embodiment of the present invention, the preparation method of the fibers with a diameter of 5-10 μm and a length of 3-15 cm includes the following steps:
[0038] Step a: if figure 1 As shown, the fiber mat with a fiber diameter of 5-10 μm is cut into a small fiber mat with a side length of 3-15 cm;
[0039] Step b: Stir and disperse the s...
Embodiment 1
[0056] First, cut the purchased glass fiber mat into small pieces of 5*5cm with scissors. Add an appropriate amount of hydrochloric acid to the deionized water, so that the concentration of hydrochloric acid in the solution is 0.05mol / L, and use a mechanical stirrer to stir for 30 minutes to obtain a preliminary dispersed glass fiber suspension.
[0057] Then use gauze to filter the glass fiber suspension to remove impurities such as solid particles therein, and put the filtered glass fiber into an oven at 60° C. to dry for 8 hours to obtain pure and dry glass fiber.
[0058] Use an electronic balance to take 2g of dried glass fiber, put it into an ultrasonic pool, then add 1L of deionized water, the concentration of glass fiber is 2g / L, and then add 0.002mol of tetraethyl orthosilicate, and ultrasonically disperse for 20 minutes to obtain a glass Mixing system with evenly dispersed fibers;
[0059] Then pour the mixed system in which the glass fibers are evenly dispersed int...
Embodiment 2
[0062] First, cut the purchased glass fiber felt into 3*3cm pieces with scissors. The fiber diameter of the fiber felt is 5-10μm, then put the cut 3*3cm pieces into deionized water, and pour them into deionized water. Add an appropriate amount of hydrochloric acid to the water to make the concentration of hydrochloric acid in the solution 0.05mol / L, and use a mechanical stirrer to stir for 20 minutes to obtain a preliminary dispersed glass fiber suspension.
[0063] Then use gauze to filter the glass fiber suspension to remove impurities such as solid particles therein, and put the filtered glass fiber into an oven at 60° C. to dry for 8 hours to obtain pure and dry glass fiber.
[0064] Use an electronic balance to take 5g of dried glass fiber, put it into the ultrasonic tank, add 1L of deionized water, the glass fiber concentration is 5g / L, and then add 0.005mol tetraethyl orthosilicate, and ultrasonically disperse for 30 minutes to obtain glass fiber Uniformly dispersed mix...
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Abstract
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