Binder for powder injection molding and preparation method of binder
A powder injection molding and binder technology, used in applications, household appliances, clay products, etc., can solve problems such as thermal decomposition or degradation, increase process energy consumption, and foaming of molded blanks, to improve stability and improve performance. The effect of repeated use and high inorganic filling
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Embodiment 1
[0037] Injection molding: Injection molding of aluminum oxide tubes for automotive oxygen sensors
[0038] The specific preparation process is as follows, and the preparation process is as attached figure 1 Shown:
[0039] ① Binder preparation: including the following components by weight: 65 parts of paraffin, 27 parts of POE, 5 parts of fatty acid glyceride tartrate, 3 parts of stearic acid and weigh all the raw materials of the binder; then prepare the binder according to the above process method stand-by.
[0040] ② Weighing of feed materials: Weigh 2.3kg of the binder and 15.0kg of (doped with yttrium magnesium lanthanum) D50-0.5μm alumina powder.
[0041] ③Feeding and banburying granulation: put the alumina powder into the oven and heat it to 90°C / keep it for 1 hour. Put the binder into the mixing chamber of the integrated mixing and granulating machine and raise the temperature to 90°C, then add 1 / 2 of the alumina powder into the molten binder in 4 times for banburying...
Embodiment 2
[0046] Injection molding: zirconia mobile phone back panel injection molding
[0047] The specific preparation process is as follows, and the preparation process is as attached figure 1 Shown:
[0048] 1. preparation of binder: comprising the following components by weight: 54 parts of paraffin, 38 parts of POE, 4 parts of fatty acid glyceride acetate, 2 parts of fatty acid glyceride palmitate, and 2 parts of oleic acid. Weigh the binder material respectively; Prepare the binder according to the process method of Example 1 for use.
[0049] ② Weighing of feed materials: Weigh 2.1 kg of the binder and 18.9 kg of 3Y stabilized zirconia powder with D50-0.4 μm respectively.
[0050] ③Feeding and mixing granulation: put 3Y zirconia powder into an oven and heat to 90°C / keep for 1 hour. Put the binder into the mixing chamber of the integrated mixing and granulating machine and raise the temperature to 100°C, then add 1 / 2 of the 3Y zirconia powder into the molten binder in 4 times ...
Embodiment 3
[0055] Injection molding: YT5 carbide nozzle
[0056] The specific preparation process is as follows, and the preparation process is as attached figure 1 Shown:
[0057] ①Preparation of binder: Including the following components by weight: 35 parts of paraffin, 55 parts of POE, 5 parts of lauric fatty acid glycerides, and 5 parts of stearic acid. Adhesive ready to use.
[0058] ② Weighing of feeding materials: Weigh 1.5kg of the binder and 21kg of YT5 cemented carbide powder with an average particle size of 1.5μm
[0059] ③Feeding and mixing granulation: first put the YT5 cemented carbide powder into the oven and heat it to 90°C / keep it for 1 hour. Put the binder into the mixing chamber of the integrated mixing and granulating machine and raise the temperature to 90°C, then add 1 / 2 of the YT5 cemented carbide powder into the molten binder in 4 times for banburying. After the fourth addition, time internal mixing for 15 to 30 minutes, and then start granulation (feeding is ...
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