Catalysis degreasing type adhesive for powder injection moulding and preparation of material feeding thereof
A technology of powder injection molding and catalytic degreasing, applied in the direction of adhesives, etc., can solve the problems of high production cost, achieve low cost, promote wide application, and simple preparation
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[0038] Example 1:
[0039] A catalytic degreasing binder suitable for 17~4PH stainless steel powder injection molding. It consists of the following components (volume percentage): 89% homopolyoxymethylene 100P, 5% high density polyethylene, 3% paraffin, 1% ethylene-vinyl acetate copolymer (EVA) with a vinyl acetate (VA) content of 26, 1% dibutyl phthalate, 1% zinc stearate.
[0040] Such as figure 1 As shown, the preparation method of this embodiment includes the following steps:
[0041] (1) 89% homopolyoxymethylene 100P, 5% high-density polyethylene, 1% ethylene-vinyl acetate copolymer (EVA) with 26 VA content and 17-4PH with 62% powder loading The stainless steel powder was added to the three-dimensional rotator and dry mixed for 1 hour to obtain a uniform powder and binder mixture.
[0042] (2) Put the above homogeneous mixture into an internal mixer, raise the temperature to 185°C, and mix for 30 minutes.
[0043] (3) Lower the mixing temperature to 170°C, then add 3% paraffi...
Example Embodiment
[0045] Example 2:
[0046] A catalytic degreasing binder suitable for zirconia ceramic powder injection molding. It is composed of the following components (volume percentage): 90% homopolyoxymethylene 500P, 4% high-density polyethylene, 3% paraffin, 1 Ethylene-vinyl acetate copolymer (EVA) with a% vinyl acetate (VA) content of 24, 1.5% dibutyl phthalate, 0.5% zinc stearate.
[0047] The preparation method of this embodiment:
[0048] (1) 90% homopolyoxymethylene 500P, 4% high-density polyethylene, 1% vinyl acetate (VA) content of 24 ethylene-vinyl acetate copolymer (EVA) and 53% powder loading zirconia ceramics The powder is added to the three-dimensional rotator and dry-mixed for 1 hour to obtain a uniform powder and binder mixture.
[0049] (2) Put the above homogeneous mixture into an internal mixer, raise the temperature to 190°C, and mix for 25 minutes.
[0050] (3) Lower the mixing temperature to 165°C, then add 3% paraffin, 1.5% dibutyl phthalate and 0.5% stearic acid into ...
Example Embodiment
[0052] Example 3:
[0053] A catalytic degreasing binder suitable for YG12 hard powder injection molding. It is composed of the following components (volume percentage): 89% homopolyoxymethylene 100P, 5% high-density polyethylene, 3% paraffin, 1 % Vinyl Acetate (VA) content of 26 ethylene-vinyl acetate copolymer (EVA), 1% dibutyl phthalate, 1% zinc stearate.
[0054] The preparation method of this embodiment:
[0055] (1) 89% homopolyoxymethylene 100P, 5% high-density polyethylene, 1% vinyl acetate (VA) content of 26 ethylene-vinyl acetate copolymer (EVA) and 56% powder loading YG12 hard The powder is added to the three-dimensional rotator and dry mixed for 1 hour to obtain a uniform powder and binder mixture.
[0056] (2) Put the above homogeneous mixture into an internal mixer, raise the temperature to 185°C, and mix for 30 minutes.
[0057] (3) Lower the mixing temperature to 170°C, then add 3% paraffin, 1% dibutyl phthalate and 1% stearic acid into the internal mixer and mix f...
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