CN111875919A - Elastic powder forming feeding formula - Google Patents
Elastic powder forming feeding formula Download PDFInfo
- Publication number
- CN111875919A CN111875919A CN202010838980.8A CN202010838980A CN111875919A CN 111875919 A CN111875919 A CN 111875919A CN 202010838980 A CN202010838980 A CN 202010838980A CN 111875919 A CN111875919 A CN 111875919A
- Authority
- CN
- China
- Prior art keywords
- agent
- lubricant
- functional additive
- filler
- skeleton
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses an elastic powder forming feeding formula which comprises the following components (in percentage by mass): 0.5-2 parts of activating dispersant; 0.5-2 parts of lubricant; 0.5-6 parts of functional additive; 8-12 parts of a skeleton agent; 80-88 parts of a filling agent; according to the invention, through a scientific and reasonable proportion, the activating dispersant, the lubricant, the functional additive, the skeleton agent and the filler are dissolved and mixed together, and are extruded and granulated to form the powder forming feed, and the powder forming feed has better elasticity and strength, can uniformly fill gaps among powder, and avoids cracks in powder metallurgy products.
Description
Technical Field
The invention relates to the technical field of powder forming feeding, in particular to an elastic powder forming feeding formula.
Background
Powder form feeds are primarily used to bind fine powders together into larger agglomerates of material using binders to reduce high friction between the fine powders, possible flying and sticking to the carrier, a manner that has been well established and well known in the past.
In the existing powder forming and feeding system, the first one is a single polymer binder, which is simple and fast, and the simplest one is a wax-based binder, however, the strength of the wax is not good enough, and the effect of maintaining uniform dispersion of the powder is not good, and in addition, a powder embedding method (forming the powder into a green body with the binder) must be adopted when removing the binder, the binder in the green body is adsorbed by the capillary phenomenon of powder embedding through slow heating, and then the binder is burnt out at high temperature, and the green body is solidified into a sintered powder product, and the required time is very long; the second is a composite formula developed in the last 20 years, the five categories of activated dispersing agent, lubricant, functional additive, skeleton agent and filler are distinguished by the binder according to the molecular weight of the polymer, in the commonly used technology, no matter the metal, alloy, ceramic and intermetallic compound adopt the powder metallurgy pressing process and the powder injection molding process, improper or incomplete filling often occurs during the process of reproducing the thin-wall (the minimum thickness of a green part is more than 1mm), after the final pressure application process of compression and shape retention, the problems of defects including unfilled corners, incomplete filling, ejection cracks and the like are obtained, and the problems are revealed even after the sintering is completed, thereby causing industrial troubles to the quality problems of product manufacture.
Therefore, we have designed an elastic powder forming feed formulation based on the above experience for providing metals, alloys, ceramics and intermetallics using powder metallurgy pressing processes and powder injection molding processes as a means of resolving the defects characteristic of green compact thin parts.
Disclosure of Invention
The invention aims to provide an elastic powder forming feeding formula to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an elastic powder forming feed formula comprises the following components (in percentage by mass):
0.5-2 parts of activating dispersant;
0.5-2 parts of lubricant;
0.5-6 parts of functional additive;
8-12 parts of a skeleton agent;
and 80-88 of a filling agent.
Wherein the activating and dispersing agent is one or more polymers of stearic acid, pentaerythritol stearate, ethylene bis stearamide, ethylene glycol and an antioxidant 1010.
Wherein the lubricant is one or more polymers selected from paraffin wax, carnauba wax and microcrystalline wax.
Wherein the functional additive is one or more polymers of butadiene rubber, maleic anhydride and thermoplastic rubber.
Wherein the skeleton agent is one or two polymers of polypropylene and polyethylene.
Wherein, the filler is one or two polymers of polyformaldehyde and acryl. .
A method of preparing a flexible powder forming feed formulation comprising the steps of:
s1, respectively weighing the activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler by an electronic scale according to the weight, and then sequentially adding the weighed activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler into a double-crankshaft mixer;
s2, adjusting the temperature of the double-crankshaft mixer to 450 ℃, heating the activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler through the double-crankshaft mixer, and after the activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler are dissolved, strongly stirring the mixture by using the double-crankshaft mixer to uniformly mix the dissolved activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler together;
s3, after the activated dispersing agent, the lubricating agent, the functional additive, the skeleton agent and the filler which are dissolved are uniformly mixed, the problem of the double-crankshaft mixer is adjusted to normal temperature, then the mixture in the double-crankshaft mixer is added into a granulator, the mixture is extruded and granulated through the granulator, and then the extruded granular feed is spread on a stainless steel disc for cooling, so that the powder forming feed is obtained.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through a scientific and reasonable proportion, the activating dispersant, the lubricant, the functional additive, the skeleton agent and the filler are dissolved and mixed together, and are extruded and granulated to form the powder forming feed, and the powder forming feed has better elasticity and strength, can uniformly fill gaps among powder, and avoids cracks in powder metallurgy products.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiment 1, this embodiment provides a technical solution: an elastic powder forming feed formula comprises the following components (in percentage by mass):
0.5 percent of stearic acid;
1.3 percent of ethylene bis stearamide;
1.0% of paraffin;
1.2% of butadiene rubber;
9.0% of polypropylene;
2.0% of polyethylene;
85.0 percent of polyformaldehyde.
The nano layer coated outside the powder can make the powder rotate and rearrange in a limited degree, release the stress accumulated in the injection process and uniformly disperse various binders.
Wherein, the addition of the lubricant fills up the rough powder surface, so that the friction force between the powder is greatly reduced.
The functional additive is used for assisting molecular chain repairing and grafting of a low-molecular-weight activating dispersant and a lubricant and a high-molecular-weight skeleton agent and a filling agent, and assisting the molecular chain length of the whole binder to keep proper so as to keep good holding force on powder.
The skeleton agent is used as a propping agent for maintaining the change of gaps and relative positions among the powder bodies when the skeleton agent is gradually decomposed at different temperatures in the degreasing process.
Wherein, the filler mainly maintains the clearance between the powders during the injection molding process and smoothly drives the powders to fill the mold cavity.
Wherein the activating dispersant is one or more polymers selected from stearic acid, pentaerythritol stearate, ethylene bis stearamide, ethylene glycol and an antioxidant 1010.
Wherein the lubricant is one or more polymers selected from paraffin wax, carnauba wax and microcrystalline wax.
Wherein the functional additive is one or more polymers of butadiene rubber, maleic anhydride and thermoplastic rubber.
Wherein the skeleton agent is one or two polymers of polypropylene and polyethylene.
Wherein, the filler is one or two polymers of polyformaldehyde and acryl.
A method of preparing a flexible powder forming feed formulation comprising the steps of:
s1, respectively weighing the activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler by an electronic scale according to the weight, and then sequentially adding the weighed activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler into a double-crankshaft mixer;
s2, adjusting the temperature of the double-crankshaft mixer to 450 ℃, heating the activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler through the double-crankshaft mixer, and after the activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler are dissolved, strongly stirring the mixture by using the double-crankshaft mixer to uniformly mix the dissolved activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler together;
s3, after the activated dispersing agent, the lubricating agent, the functional additive, the skeleton agent and the filler which are dissolved are uniformly mixed, the problem of the double-crankshaft mixer is adjusted to normal temperature, then the mixture in the double-crankshaft mixer is added into a granulator, the mixture is extruded and granulated through the granulator, and then the extruded granular feed is spread on a stainless steel disc for cooling, so that the powder forming feed is obtained.
Embodiment 2, this embodiment provides a technical solution: an elastic powder forming feed formula comprises the following components (in percentage by mass):
0.5 percent of stearic acid;
1.0% of ethylene bis stearamide;
0.5 percent of paraffin;
1.0% of butadiene rubber;
8.0% of polypropylene;
polyethylene 1.0%;
88.0 percent of polyformaldehyde.
Wherein the activating dispersant is one or more polymers selected from stearic acid, pentaerythritol stearate, ethylene bis stearamide, ethylene glycol and an antioxidant 1010.
Wherein the lubricant is one or more polymers selected from paraffin wax, carnauba wax and microcrystalline wax.
Wherein the functional additive is one or more polymers of butadiene rubber, maleic anhydride and thermoplastic rubber.
Wherein the skeleton agent is one or two polymers of polypropylene and polyethylene.
Wherein, the filler is one or two polymers of polyformaldehyde and acryl. .
A method of preparing a flexible powder forming feed formulation comprising the steps of:
s1, respectively weighing the activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler by an electronic scale according to the weight, and then sequentially adding the weighed activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler into a double-crankshaft mixer;
s2, adjusting the temperature of the double-crankshaft mixer to 450 ℃, heating the activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler through the double-crankshaft mixer, and after the activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler are dissolved, strongly stirring the mixture by using the double-crankshaft mixer to uniformly mix the dissolved activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler together;
s3, after the activated dispersing agent, the lubricating agent, the functional additive, the skeleton agent and the filler which are dissolved are uniformly mixed, the problem of the double-crankshaft mixer is adjusted to normal temperature, then the mixture in the double-crankshaft mixer is added into a granulator, the mixture is extruded and granulated through the granulator, and then the extruded granular feed is spread on a stainless steel disc for cooling, so that the powder forming feed is obtained.
In conclusion, the activating dispersant, the lubricant, the functional additive, the skeleton agent and the filler are dissolved and mixed together through a scientific and reasonable proportion, and are extruded and granulated to form the powder forming feed, and the powder forming feed has better elasticity and strength, can uniformly fill gaps among powder, and avoids cracks in powder metallurgy products.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An elastic powder forming feed formula is characterized by comprising the following components (in percentage by mass):
0.5-2 parts of activating dispersant;
0.5-2 parts of lubricant;
0.5-6 parts of functional additive;
8-12 parts of a skeleton agent;
and 80-88 of a filling agent.
2. A resilient powder form feed formulation as claimed in claim 1 wherein: the activating and dispersing agent is one or more polymers of stearic acid, pentaerythritol stearate, ethylene bis stearamide, ethylene glycol and an antioxidant 1010.
3. A resilient powder form feed formulation as claimed in claim 1 wherein: the lubricant is one or more polymers selected from paraffin wax, carnauba wax and microcrystalline wax.
4. A resilient powder form feed formulation as claimed in claim 1 wherein: the functional additive is one or more polymers of butadiene rubber, maleic anhydride and thermoplastic rubber.
5. A resilient powder form feed formulation as claimed in claim 1 wherein: the skeleton agent is one or two polymers of polypropylene and polyethylene.
6. A resilient powder form feed formulation as claimed in claim 1 wherein: the filler is one or two polymers of polyformaldehyde and acryl.
7. A method of preparing a resilient powder forming feed formulation as claimed in any one of claims 1 to 6 comprising the steps of:
s1, respectively weighing the activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler by an electronic scale according to the weight, and then sequentially adding the weighed activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler into a double-crankshaft mixer;
s2, adjusting the temperature of the double-crankshaft mixer to 450 ℃, heating the activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler through the double-crankshaft mixer, and after the activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler are dissolved, strongly stirring the mixture by using the double-crankshaft mixer to uniformly mix the dissolved activated dispersing agent, the lubricant, the functional additive, the skeleton agent and the filler together;
s3, after the activated dispersing agent, the lubricating agent, the functional additive, the skeleton agent and the filler which are dissolved are uniformly mixed, the problem of the double-crankshaft mixer is adjusted to normal temperature, then the mixture in the double-crankshaft mixer is added into a granulator, the mixture is extruded and granulated through the granulator, and then the extruded granular feed is spread on a stainless steel disc for cooling, so that the powder forming feed is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010838980.8A CN111875919A (en) | 2020-08-19 | 2020-08-19 | Elastic powder forming feeding formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010838980.8A CN111875919A (en) | 2020-08-19 | 2020-08-19 | Elastic powder forming feeding formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111875919A true CN111875919A (en) | 2020-11-03 |
Family
ID=73204009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010838980.8A Pending CN111875919A (en) | 2020-08-19 | 2020-08-19 | Elastic powder forming feeding formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111875919A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113523284A (en) * | 2021-05-25 | 2021-10-22 | 宁波市鑫瑞鸿新材料科技有限公司 | Rapid thermal desorption sintering integrated forming metal feed and application method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103911100A (en) * | 2014-04-14 | 2014-07-09 | 上海尤因新材料技术有限公司 | Polyoxymethylene-based binder for powder injection molding and preparation method of polyoxymethylene-based binder |
| CN105252008A (en) * | 2015-11-04 | 2016-01-20 | 深圳艾利门特科技有限公司 | Method for preparing porous heat conduction copper pipes through powder extrusion forming technology |
| CN106270522A (en) * | 2016-09-23 | 2017-01-04 | 江西悦安超细金属有限公司 | A kind of for metal injection molded feeding and preparation method thereof |
| CN109014213A (en) * | 2018-09-03 | 2018-12-18 | 深圳市贝斯特精工科技有限公司 | A kind of production method of the powder injection forming sintering feeding with special odor |
| CN109513916A (en) * | 2018-12-04 | 2019-03-26 | 深圳市众德祥科技有限公司 | A kind of high fluidity metal powder injection molding feeding and preparation method thereof |
-
2020
- 2020-08-19 CN CN202010838980.8A patent/CN111875919A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103911100A (en) * | 2014-04-14 | 2014-07-09 | 上海尤因新材料技术有限公司 | Polyoxymethylene-based binder for powder injection molding and preparation method of polyoxymethylene-based binder |
| CN105252008A (en) * | 2015-11-04 | 2016-01-20 | 深圳艾利门特科技有限公司 | Method for preparing porous heat conduction copper pipes through powder extrusion forming technology |
| CN106270522A (en) * | 2016-09-23 | 2017-01-04 | 江西悦安超细金属有限公司 | A kind of for metal injection molded feeding and preparation method thereof |
| CN109014213A (en) * | 2018-09-03 | 2018-12-18 | 深圳市贝斯特精工科技有限公司 | A kind of production method of the powder injection forming sintering feeding with special odor |
| CN109513916A (en) * | 2018-12-04 | 2019-03-26 | 深圳市众德祥科技有限公司 | A kind of high fluidity metal powder injection molding feeding and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113523284A (en) * | 2021-05-25 | 2021-10-22 | 宁波市鑫瑞鸿新材料科技有限公司 | Rapid thermal desorption sintering integrated forming metal feed and application method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7390567B2 (en) | Soft magnetic composite powder comprising an inorganic insulating coating, production method of the same, and production method of soft magnetic compact | |
| JPS61251576A (en) | Manufacture of sintered carbide ceramic product | |
| JPH07508076A (en) | Method for producing metal powder treated with binder containing organic lubricant | |
| JPH01500909A (en) | Method for manufacturing porous shaped products | |
| KR20100132455A (en) | Method for producing powder mixture for powder metallurgy, and method for producing sintered body | |
| EP0296552B1 (en) | Metal binder and molding composition | |
| TWI331632B (en) | Metal powder composition and preparation thereof | |
| CN1279630A (en) | Lubricant for metallurgical powder compositions | |
| JPH0647684B2 (en) | Degreasing method for injection molded products | |
| WO2020200426A1 (en) | Sinterable feedstock for use in 3d printing devices | |
| CN111875919A (en) | Elastic powder forming feeding formula | |
| JP2012167302A (en) | Powdery mixture for powder metallurgy and method for producing the same | |
| CN1067615C (en) | Method for producing high-gravity alloy manufactured product | |
| CN112846186A (en) | Tungsten alloy feed for MIM and preparation method thereof | |
| US6355207B1 (en) | Enhanced flow in agglomerated and bound materials and process therefor | |
| US5030677A (en) | Composition for injection moulding | |
| EP0409646A2 (en) | Compound for an injection molding | |
| WO1997038811A1 (en) | Injection moulding processes, especially metal injection moulding processes | |
| CN113787190A (en) | Preparation method of feed for metal injection molding, feed and metal part | |
| EP1730321B1 (en) | Powder metal mixture including micronized starch | |
| TW200523053A (en) | Powder metal mixture including micronized cellulose fibers | |
| US20230128986A1 (en) | Iron-Based Mixed Powder and Method for Manufacturing the Same | |
| JPH036302A (en) | Manufacture of sintered product composed of binder for forming powder and metal powder or ceramic powder | |
| CN112719261B (en) | Iron-based powder metallurgy lubricant and preparation method thereof | |
| JPH0456702A (en) | Raw material powder for powder metallurgy and manufacture thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201103 |