CN111040366A - Metal injection molding material and processing method thereof - Google Patents
Metal injection molding material and processing method thereof Download PDFInfo
- Publication number
- CN111040366A CN111040366A CN201910238177.8A CN201910238177A CN111040366A CN 111040366 A CN111040366 A CN 111040366A CN 201910238177 A CN201910238177 A CN 201910238177A CN 111040366 A CN111040366 A CN 111040366A
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- Prior art keywords
- injection molding
- metal
- molding material
- carrier
- metal injection
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a metal injection molding material, which comprises 96-99% of carrier, 0.5-2% of auxiliary agent, 0.2-0.8% of diffusion oil and 0.1-0.5% of metal toner by weight percent, and high-gloss injection molding parts are obtained by stirring, extruding, injection molding and other processing procedures. The injection molding part obtained by the invention has strong metal texture and high glossiness, can generate diamond-grade super-bright color, is free of dust, and has good environment-friendly effect.
Description
Technical Field
The invention relates to the technical field of injection molding materials, in particular to a metal injection molding material and a processing method thereof.
Background
As plastic devices are applied more and more, plastic devices replace metal devices more and more. With the development and progress of society, people pay attention to the use performances such as mechanical strength and heat resistance of plastic instead of metal devices, and also pursue the appearance and decorative effect of the plastic parts. The common plastic products mostly show the natural color of plastic particles, such as transparent, semi-yellow or amber, and have obvious plastic characteristics, except that special color requirements do not exist. However, the metal powder added into the carrier causes serious flow marks in the injection molding process, and the metal powder coated on the carrier causes serious dust pollution to the operating environment, serious chromatic aberration, non-bright color and weak metal texture.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a metal injection molding material and a processing method thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
a processing method of a metal injection molding material comprises the following steps:
uniformly mixing and stirring 96-99% of carrier, 0.5-2% of auxiliary agent and 0.2-0.8% of diffusion oil to obtain a primarily uniformly mixed material;
uniformly stirring 0.1-0.5% of metallic toner and the primarily uniformly mixed material to obtain a final material;
and (3) sending the final material into an extruder for extrusion, and then performing injection molding through an injection molding machine to obtain the metal injection molding material.
Preferably, the temperature range of the extruder is 200-230 ℃; the rotating speed of the main machine is 380-450 r/min; the feeding frequency is 16-22 r/m.
Preferably, the steel of the injection mold on the injection molding machine is S136 or S137 of Switzerland, the polishing needs to reach 12000-mesh diamond grade, the gate is a wide gate, and the temperature is 220-240 ℃.
Preferably, the injection molding machine is matched with a mold temperature controller with quick heating and quick cooling.
Preferably, the stirrer is a low-shear stirrer, and the double-screw extruder is a low-shear screw combination.
The metal injection molding material comprises, by weight, 96-99% of a carrier, 0.5-2% of an auxiliary agent, 0.2-0.8% of diffusion oil, and 0.1-0.5% of a metal toner.
Preferably, the carrier is selected from a carrier with high melting point and high light transmittance, so that the metal texture of the product is stronger.
Preferably, the carrier is ABS resin.
Preferably, the auxiliary agent comprises 0.4-1.5% of brightening agent and 0.1-0.5% of silver powder, wherein the brightening agent can be imported, so that the appearance of the product is more beautiful.
Preferably, the toner is polyhedral metal powder.
The beneficial effects brought by the invention are as follows: by adding silver powder into the carrier, no flow mark is ensured after the injection molding piece is molded, and the metal texture is increased; the brightener can ensure that the carrier and various additives are dispersed more uniformly, and meanwhile, the glossiness is improved; the injection molding part processed according to the formula and the process has the advantages of strong metal texture, high glossiness, no dust and good environment-friendly effect, and can generate diamond-grade super-dazzling colors.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and to clearly and unequivocally define the scope of the present invention.
The first embodiment is as follows:
a metal injection molding material comprises, by weight, 98.5% of a carrier, 0.8% of a brightener, 0.3% of a diffusion oil, 0.2% of a metal toner and 0.2% of a silver powder.
A processing method of a metal injection molding material comprises the following steps:
uniformly mixing and stirring 98.5% of carrier, 0.8% of brightener, 0.2% of silver powder and 0.3% of diffusion oil to obtain a primarily uniformly mixed material;
uniformly stirring 0.2% of metallic toner and the primarily uniformly mixed material to obtain a final material;
and (3) feeding the final material into an extruder for extrusion, wherein the temperature of the extruder is 200 ℃, the rotating speed of a main machine is 390r/min, the feeding frequency is 18r/m, and then performing injection molding by using an injection molding machine to obtain the metal injection molding material.
Example two:
a metal injection molding material comprises, by weight, 98% of a carrier, 1.0% of a brightener, 0.4% of a diffusion oil, 0.3% of a metal toner and 0.3% of a silver powder.
A processing method of a metal injection molding material comprises the following steps:
uniformly mixing and stirring 98% of carrier, 1.0% of brightener, 0.3% of silver powder and 0.4% of diffusion oil to obtain a primarily uniformly mixed material;
uniformly stirring 0.3% of metallic toner and the primarily uniformly mixed material to obtain a final material;
and (3) feeding the final material into an extruder for extrusion, wherein the temperature of the extruder is 210 ℃, the rotating speed of a main machine is 420r/min, the feeding frequency is 20r/m, and then performing injection molding by using an injection molding machine to obtain the metal injection molding material.
Example three:
a metallic injection-moulding material comprises 97.6 wt% of carrier, 0.8 wt% of brightener, 0.6 wt% of diffusion oil, 0.5 wt% of metallic toner and 0.5 wt% of silver powder.
A processing method of a metal injection molding material comprises the following steps:
uniformly mixing and stirring 97.6% of carrier, 0.8% of brightener, 0.5% of silver powder and 0.6% of diffusion oil to obtain a primarily uniformly mixed material;
uniformly stirring 0.5% of metallic toner and the primarily uniformly mixed material to obtain a final material;
and (3) feeding the final material into an extruder for extrusion, wherein the temperature of the extruder is 230 ℃, the rotating speed of a main machine is 440r/min, the feeding frequency is 22r/m, and then performing injection molding by using an injection molding machine to obtain the metal injection molding material.
Comparative example:
the existing processing method of the metal injection molding material comprises the following steps:
1. adding white oil into metal powder, adding plastic carrier, and stirring in a color mixer.
2. And directly beating the mixed material into a product in an injection molding machine.
The results of the performance tests on the molded injection-molded parts of examples one to three and comparative example are shown in Table 1:
table 1 binder composition performance test results
The experimental data show that the paint has the advantages of high glossiness, uniform dispersion, no color lines, no color points, small color difference and scratch resistance.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be made by those skilled in the art without inventive work within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (10)
1. The processing method of the metal injection molding material is characterized in that the metal injection molding material comprises 96-99% of carrier, 0.5-2% of auxiliary agent, 0.2-0.8% of diffusion oil and 0.1-0.5% of metal toner in percentage by weight, and the processing method of the metal injection molding material further comprises the following steps:
uniformly mixing and stirring 96-99% of carrier, 0.5-2% of auxiliary agent and 0.2-0.8% of diffusion oil to obtain a primarily uniformly mixed material;
uniformly stirring 0.1-0.5% of metallic toner and the primarily uniformly mixed material to obtain a final material;
and (3) sending the final material into an extruder for extrusion, and then performing injection molding through an injection molding machine to obtain the metal injection molding material.
2. The processing method of the metal injection molding material as claimed in claim 1, wherein the temperature of the extruder is in a range of 200 to 230 ℃; the rotating speed of the main machine is 380-450 r/min; the feeding frequency is 16-22 r/m.
3. The method as claimed in claim 1, wherein the steel material of the injection mold of the injection molding machine is selected from S136 or S137 of Switzerland, the polishing is performed to 12000-mesh diamond grade, the gate is selected from wide gate, and the temperature is 220-240 ℃.
4. The method as claimed in claim 3, wherein the injection molding machine is equipped with a mold temperature controller for rapid heating and cooling.
5. A method as claimed in claim 1, wherein the low shear mixer is used for the mixing process.
6. The metal injection molding material is characterized by comprising 96-99% of carrier, 0.5-2% of auxiliary agent, 0.2-0.8% of diffusion oil and 0.1-0.5% of metal toner in percentage by weight.
7. A metal injection molding material as claimed in claim 6, wherein the carrier is selected from the group consisting of high melting point, high light transmittance carriers.
8. A metal casting material according to claim 7, wherein the carrier is ABS resin.
9. The metal casting material according to claim 6, wherein the assistant comprises 0.4-1.5% of the brightener and 0.1-0.5% of the silver powder.
10. The metal injection molding material of claim 6, wherein the toner is polyhedral metal powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910238177.8A CN111040366A (en) | 2019-03-27 | 2019-03-27 | Metal injection molding material and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910238177.8A CN111040366A (en) | 2019-03-27 | 2019-03-27 | Metal injection molding material and processing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111040366A true CN111040366A (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910238177.8A Pending CN111040366A (en) | 2019-03-27 | 2019-03-27 | Metal injection molding material and processing method thereof |
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| Country | Link |
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| CN (1) | CN111040366A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304292A (en) * | 2011-06-17 | 2012-01-04 | 马旭民 | Method for replacing painting on surface of injection product |
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2019
- 2019-03-27 CN CN201910238177.8A patent/CN111040366A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304292A (en) * | 2011-06-17 | 2012-01-04 | 马旭民 | Method for replacing painting on surface of injection product |
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Application publication date: 20200421 |
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