CN100549071C - The preparation method of a kind of metal and plastics composite - Google Patents
The preparation method of a kind of metal and plastics composite Download PDFInfo
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- CN100549071C CN100549071C CNB2007100239991A CN200710023999A CN100549071C CN 100549071 C CN100549071 C CN 100549071C CN B2007100239991 A CNB2007100239991 A CN B2007100239991A CN 200710023999 A CN200710023999 A CN 200710023999A CN 100549071 C CN100549071 C CN 100549071C
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Abstract
The preparation method of a kind of metal and plastic composite material, raw material: 1, metal tungsten powder, 60～95 weight parts; 2, plastics, 5～40 weight parts; 3, stearic acid, 0.02～1 weight part; Technology is as follows: 1, with the plastics heat fused; Tungsten powder is put into the ball mill ball milling, make granularity full and uniform; 2, plastics and tungsten powder are packed into mixing in the twin-screw mixer machine, thorough mixing is even, and temperature is 80～250 ℃ of scopes; 3, mixture is put into double-roll rolling mill and is utilized two roller gaps extruding refining glue that rolls repeatedly, temperature is 100～300 ℃ of scopes, add the softening metal of stearic acid, refining during glue two roller gaps in 0.3～2mm scope from large to small, roll rotational speed by high step-down, is gluey end until playing glue in 50～2000 commentaries on classics/per minute scopes; 4, cool off, granulate finished product.But the present invention has obtained the anti-radiation shielding material of a kind of nontoxic, adjustable density and injection moulding, alternative lead and tungsten be as the protective material of X ray, electron radiation and electronic jamming in radiating medical and military field, and compare with tungsten and to have better processability.
Description
Technical field
The present invention relates to the preparation method of a kind of metal and plastic composite material, particularly the preparation methods of tungsten and the compound formation of plastics.This material alternative metallic lead in radiating medical and military field and is compared with the tungsten material and to be had better processability as the protective material of X ray, electron radiation and electronic jamming.
Background technology
In radiating medical and military field, use the lead metal material to make corresponding safety guard or barrier usually in order to prevent X ray, electron radiation and electronic jamming, the shielding effect of utilizing lead metal self to have is protected the safety of human body or electronics.As everyone knows, lead belongs to radioactive metal, also is a kind of poisonous element, uses this material not only very dangerous to human body, and can bring very big environmental pollution.Therefore, countries in the world government is all making great efforts to ban use of this material at present.
The tungsten material has shielding effect to X ray, electron radiation and electronic jamming, also can be used as protective material and use in radiating medical and military field.Compare the tungsten material with lead nontoxic to human body, can not cause environmental pollution, but, because tungsten forming materials difficulty, therefore production cost height, big, the complex process of energy consumption when making safety guard or barrier, and can only be processed into simple tungsten plate, can't produce the safety guard or the barrier of complicated shape.
Summary of the invention
The invention provides the preparation method of a kind of tungsten and plastics composite, its objective is and to obtain a kind of nontoxic and anti-radiation shielding material that can injection moulding, to solve in the prior art, the toxicity problem that uses lead metal to bring, and difficult forming and the high problem of production cost of using tungsten to exist.
For achieving the above object, the technical solution used in the present invention is: the preparation method of a kind of metal and plastics composite, and its content is:
Raw material comprises:
(1), metal tungsten powder, average diameter of particles is at 1～7 μ m, 60～95 weight parts;
(2), plastics are selected one of following material:
1., ABS 5～40 weight parts;
2., PA66 5～40 weight parts;
3., EVA 5～40 weight parts;
(3), stearic acid 0.02～1 weight part;
Manufacture craft is as follows:
(1), is equipped with raw material in proportion;
(2), raw material is carried out pre-treatment:
1., plastics are heated to after the melted state standby;
2., metal tungsten powder is put into the ball mill ball milling of sealing, make the granularity of metal tungsten powder full and uniform, the metal tungsten powder behind the ball milling is standby;
(3), the plastics after will melting and the metal tungsten powder behind the ball milling pack into mixingly in the twin-screw mixer machine, makes plastics and metal tungsten powder thorough mixing even, temperature is controlled at 80～250 ℃ of scopes when mixing;
(4), the mixture after mixing is directly put into double-roll rolling mill, utilize two roller gaps, the extruding mixture material that rolls repeatedly refining glue, temperature is controlled at 100～300 ℃ of scopes, add the softening tungsten of catalyzer stearic acid in the mixing process, refining during glue two roller gaps in 0.3～2mm scope from large to small, roll rotational speed by high step-down, plays glue until mixture and is gluey end in 50～2000 commentariess on classics/per minute scopes simultaneously;
(5), will refine take out behind the glue be gelationus mixture cooling, granulating obtains finished product.
Related content in the technique scheme is explained as follows:
1, in the such scheme, feed metal tungsten powder particles mean diameter is at 1～7 μ m, and best average diameter of particles is 3～3.5 μ m, and the uniform particles degree of metal tungsten powder is high more good more behind the ball milling.ABS is a trade(brand)name, its chemistry acrylonitrile-butadiene-styrene copolymer by name.PA66 is a nylon 66.EVA is a trade(brand)name, base chemistry ethylene-vinyl acetate copolymer by name.The stearic acid another name is stearic acid or octadecanoic acid, molecular formula: CH
3(CH
2)
16COOH.
2, in the such scheme, for the technology that simplifies the operation, described mixing process is divided into two stages at least, and the fs is adjusted at two rollers gap between 1～2mm, and two roller rotating speeds are controlled at 1000～2000 commentaries on classics/per minute scopes; Final stage is adjusted at two rollers gap between 0.3～1mm, and two roller rotating speeds are controlled at 50～300 commentaries on classics/per minute scopes.About refining during glue two roller gaps in 0.3～2mm scope from large to small, roll rotational speed by high step-down, also can be realized by continuous adjustment in 50～2000 commentaries on classics/per minute scopes simultaneously.Continuous adjustment is had relatively high expectations to equipment, needs to be equipped with automatic control device.
3, in the such scheme, the best moment that stearic acid adds in mixing process is after the fs, and disposable adding before the stage in the end.
4, in the such scheme, the ball milling time of described metal tungsten powder was added raw spirit 0.2～1 weight part at 12～60 hours during ball milling, prevent that metal tungsten powder causes the tungsten oxidation after heating up in the ball milling.
5, in the such scheme,, antioxidant 1010 can be added or/and oxidation inhibitor 168,0.05～1 weight part in order to prevent metal tungsten powder oxidation when the ball milling.
6, in the such scheme,, can in mixing process, add the toughner nano-calcium carbonate, 0.05～1 weight part in order to improve the performance of plastics.
7, in the such scheme, obtain the matrix material of different densities by the ratio of adjusting metal tungsten powder and plastics.The density range of matrix material is between 13.5～1 gram/cubic centimetres.
Because the technique scheme utilization, the present invention compared with prior art has following advantage and effect:
1, the present invention has obtained a kind of tungsten and plastics composite, and this material had both had plastic plasticity, has metallic character again simultaneously, and can produce the product of different densities according to different proportionings, has filled up between the blank density region of metallic substance.
2, material of the present invention has good moulding processability, can moulding produce difform product on injection moulding machine.Product after the moulding need not be processed in the road, back, and its product strength is good, and hardness is higher, precision size, and smooth surface can directly be used.
3, material non-toxic of the present invention, pollution-free, and the recovery that can circulate is used.
4, material of the present invention alternative lead and tungsten in radiating medical and military field and compared with tungsten and to be had better processability as the protective material of X ray, electron radiation and electronic jamming.Can also substitute the application of product in other various fields such as lead, zinc, such as ocean operation, shielding material etc.
Description of drawings
Accompanying drawing 1 is used to refine the double-roll rolling mill schematic diagram of glue for the present invention.
In the above accompanying drawing, 1, roll; 2, electric heating tube; 3, two roller gap.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment one: the preparation method of a kind of tungsten and ABS plastic matrix material
1, major ingredient and additive formulations are as follows:
| Major ingredient and |
1 content of filling a |
2 content of filling a |
3 content of filling a prescription |
| Metal tungsten powder | 95 weight parts | 60 weight parts | 80 weight parts |
| ABS | 5 weight parts | 40 weight parts | 20 weight parts |
| Stearic acid | 0.8 weight part | 0.1 weight part | 0.4 weight part |
| Raw spirit | 0.7 weight part | 0.2 weight part | 0.5 weight part |
| Antioxidant 1010 | 0.7 weight part | 0.2 weight part | 0.5 weight part |
| The toughner nano-calcium carbonate | 0.7 weight part | 0.2 weight part | 0.5 weight part |
Average diameter of particles 3～3.5 μ m of metal tungsten powder.
2, manufacture craft is as follows:
(1), is equipped with major ingredient and additive in one of above prescription ratio.
(2), respectively major ingredient is carried out pre-treatment:
1., the ABS material is put into baking oven baking or microwave oven heats, it is standby to make it melt the back fully.Press the corresponding fusing point controlled temperature of material during heating, combustion phenomena can not take place.The purpose that this step will reach is to make plastic molting be convenient to fully combine with metal tungsten powder.
2., metal tungsten powder is put into the ball mill ball milling 48 hours of sealing, make the granularity of metal tungsten powder full and uniform, add raw spirit and antioxidant 1010 during ball milling and prevent that metal tungsten powder causes the tungsten oxidation after heating up in the ball milling, the metal tungsten powder behind the ball milling is standby.The purpose that this step will reach is to make the granularity of metal tungsten powder full and uniform.
(3), the ABS after will melting and the metal tungsten powder behind the ball milling packed in the twin-screw mixer machine mixing 1.5 hours, makes ABS and metal tungsten powder thorough mixing even, temperature is controlled at 200～230 ℃ of scopes when mixing, does not make tungsten oxidized, otherwise reduces effect.The purpose that this step will reach is to make two kinds of full and uniform combinations of differing materials.
(4), the mixture after mixing is directly put into double-roll rolling mill, utilize two roller gaps, the extruding mixture material that rolls repeatedly refining glue is referring to shown in Figure 1, two rolls 1 rotate by direction as shown, mixture in the direction of arrows by two roller gaps 3 by the extruding of rolling repeatedly of two rolls 1.Temperature is controlled at 200～240 ℃ of scopes during refining glue, and temperature is controlled automatically by the electric heating tube 2 that is placed in hollow two rolls 1.Mixing process is divided into two stages, and the fs is adjusted to 1.5mm with two rollers gap 3, and two roller rotating speeds are 1600 commentaries on classics/per minutes, moves 30～40 minutes.Fs finishes the back and adds the softening tungsten of catalyzer stearic acid, and adding toughner nano-calcium carbonate improves the ABS performance.Then, subordinate phase is adjusted to 0.5mm with two rollers gap, and two roller rotating speeds are 100 commentaries on classics/per minutes, moves 10～20 minutes, plays glue ivory cream until mixture and equally is gluey end.This step is a committed step of the present invention, and the purpose that reach is by the extruding of rolling repeatedly mixture to be softened to be smelt gluey bonding state.
(5), will refine take out behind the glue be gelationus mixture cooling, granulating obtains finished product.
Embodiment two: the preparation method of a kind of tungsten and PA66 plastics composite
1, major ingredient and additive formulations are as follows:
| Major ingredient and |
1 content of filling a |
2 content of filling a |
3 content of filling a prescription |
| Metal tungsten powder | 95 weight parts | 60 weight parts | 80 weight parts |
| PA66 | 5 weight parts | 40 weight parts | 20 weight parts |
| Stearic acid | 0.8 weight part | 0.1 weight part | 0.4 weight part |
| Raw spirit | 0.7 weight part | 0.2 weight part | 0.5 weight part |
| Oxidation inhibitor 168 | 0.7 weight part | 0.2 weight part | 0.5 weight part |
| The toughner nano-calcium carbonate | 0.7 weight part | 0.2 weight part | 0.5 weight part |
Average diameter of particles 3～3.5 μ m of metal tungsten powder.
2, manufacture craft is as follows:
Manufacture craft and embodiment one are basic identical, and difference is:
Temperature was controlled at 240～250 ℃ of scopes when (1), (3) step was mixing.
Temperature was controlled at 250～280 ℃ of scopes when (2), (4) step was refined glue.
Embodiment three: the preparation method of a kind of tungsten and EVA plastics composite
1, major ingredient and additive formulations are as follows:
| Major ingredient and |
1 content of filling a |
2 content of filling a |
3 content of filling a prescription |
| Metal tungsten powder | 95 weight parts | 60 weight parts | 80 weight parts |
| EVA | 5 weight parts | 40 weight parts | 20 weight parts |
| Stearic acid | 0.8 weight part | 0.1 weight part | 0.4 weight part |
| Raw spirit | 0.7 weight part | 0.2 weight part | 0.5 weight part |
| Oxidation inhibitor 168 | 0.7 weight part | 0.2 weight part | 0.5 weight part |
| The toughner nano-calcium carbonate | 0.7 weight part | 0.2 weight part | 0.5 weight part |
Average diameter of particles 3～3.5 μ m of metal tungsten powder.
2, manufacture craft is as follows:
Manufacture craft and embodiment one are basic identical, and difference is:
Temperature was controlled at 150～180 ℃ of scopes when (1), (3) step was mixing.
Temperature was controlled at 130～170 ℃ of scopes when (2), (4) step was refined glue.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1, the preparation method of a kind of metal and plastics composite is characterized in that:
Raw material comprises:
(1), metal tungsten powder, average diameter of particles is at 1～7 μ m, 60～95 weight parts;
(2), plastics are selected one of following material:
1., ABS 5～40 weight parts;
2., PA66 5～40 weight parts;
3., EVA 5～40 weight parts;
(3), stearic acid 0.02～1 weight part;
Manufacture craft is as follows:
(1), is equipped with raw material in proportion;
(2), raw material is carried out pre-treatment:
1., plastics are heated to after the melted state standby;
2., metal tungsten powder is put into the ball mill ball milling of sealing, make the granularity of metal tungsten powder full and uniform, the metal tungsten powder behind the ball milling is standby;
(3), the plastics after will melting and the metal tungsten powder behind the ball milling pack into mixingly in the twin-screw mixer machine, makes plastics and metal tungsten powder thorough mixing even, temperature is controlled at 80～250 ℃ of scopes when mixing;
(4), the mixture after mixing is directly put into double-roll rolling mill, utilize two roller gaps, the extruding mixture material that rolls repeatedly refining glue, temperature is controlled at 100～300 ℃ of scopes, add the softening tungsten of catalyzer stearic acid in the mixing process, refining during glue two roller gaps in 0.3～2mm scope from large to small, roll rotational speed by high step-down, plays glue until mixture and is gluey end in 50～2000 commentariess on classics/per minute scopes simultaneously;
(5), will refine take out behind the glue be gelationus mixture cooling, granulating obtains finished product.
2, preparation method according to claim 1 is characterized in that: described mixing process is divided into two stages at least, and the fs is adjusted at two rollers gap between 1～2mm, and two roller rotating speeds are controlled at 1000～2000 commentaries on classics/per minute scopes; Final stage is adjusted at two rollers gap between 0.3～1mm, and two roller rotating speeds are controlled at 50～300 commentaries on classics/per minute scopes.
3, preparation method according to claim 2 is characterized in that: in the described mixing process, stearic acid is after the fs, and disposable adding before the stage in the end.
4, preparation method according to claim 1 is characterized in that: the ball milling time of described metal tungsten powder was added raw spirit 0.2～1 weight part at 12～60 hours during ball milling, prevent that metal tungsten powder causes the tungsten oxidation after heating up in the ball milling.
5, preparation method according to claim 4 is characterized in that: add antioxidant 1010 during the ball milling of described metal tungsten powder or/and oxidation inhibitor 168,0.05～1 weight part.
6, preparation method according to claim 1 is characterized in that: in the described mixing process, add the toughner nano-calcium carbonate, 0.05～1 weight part.
7, preparation method according to claim 1 is characterized in that: obtain the matrix material of different densities by the ratio of adjusting metal tungsten powder and plastics, its density range is between 13.5～1 gram/cubic centimetres.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100239991A CN100549071C (en) | 2007-07-02 | 2007-07-02 | The preparation method of a kind of metal and plastics composite |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100239991A CN100549071C (en) | 2007-07-02 | 2007-07-02 | The preparation method of a kind of metal and plastics composite |
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| Publication Number | Publication Date |
|---|---|
| CN101113202A CN101113202A (en) | 2008-01-30 |
| CN100549071C true CN100549071C (en) | 2009-10-14 |
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Cited By (1)
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| CN102977448A (en) * | 2012-12-13 | 2013-03-20 | 江苏技术师范学院 | Plastic metal alloy composite material and method for preparing section bar by using same |
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| CN102585341B (en) * | 2012-02-08 | 2013-11-20 | 上海交通大学 | Preparation method for anti-radiation ethylene-vinyl acetate copolymer composite material |
| CN103824605B (en) * | 2014-02-24 | 2017-02-15 | 湖北三禾建材科技发展有限责任公司 | Unleaded ionizing-radiation-resistant composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102977448A (en) * | 2012-12-13 | 2013-03-20 | 江苏技术师范学院 | Plastic metal alloy composite material and method for preparing section bar by using same |
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