Preparation method for silicon carbide preform based on water-based adhesive
A technology of water-based binder and prefabricated parts, which is applied in the field of electronic packaging metal matrix composite materials, can solve the problems of high sintering temperature, poor fluidity of granulated powder, and low strength of prefabricated parts, and achieve high opening porosity and sintering Low temperature and good fluidity
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[0027] (1) Example 1 and Comparative Example 1:
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[0028] Example 1: Weigh silicon carbide particles A (produced by Shandong Kaihua Silicon Carbide Micropowder Co., Ltd.: W63, average particle size: 55μm) 3000g, solid content of 40wt% aluminum dihydrogen phosphate solution (Zhuzhou City, Hunan Zhongtian Phosphate Chemical Co., Ltd.) 150g and 30wt% paraffin wax emulsion (Dongguan Aoda Chemical Co., Ltd.) 210g and 300g deionized water; the silicon carbide particles are heated to 50℃ for about 10min while stirring in the kneader, preheated, dihydrogen phosphate The aluminum, paraffin emulsion and deionized water are fully stirred in a water bath at a constant temperature of 50℃ for about 10 minutes to preheat, and then the water-based binder is slowly added to the silicon carbide particles being stirred, the cylinder cover is opened, and the kneader heating temperature is set Stir and mix at 50℃; when the moisture content of the mixture measured by the moisture meter is 4.2%, put the mixture into the tray, the thickness of the mixt...
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