CN102441950A - Processing method for recycling fine powder material of phenolic plastic finished products - Google Patents
Processing method for recycling fine powder material of phenolic plastic finished products Download PDFInfo
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- CN102441950A CN102441950A CN2011102746605A CN201110274660A CN102441950A CN 102441950 A CN102441950 A CN 102441950A CN 2011102746605 A CN2011102746605 A CN 2011102746605A CN 201110274660 A CN201110274660 A CN 201110274660A CN 102441950 A CN102441950 A CN 102441950A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
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- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The invention discloses a processing method for recycling fine powder material of phenolic plastic finished products, which comprises the steps of: adding 6.25 to 10 parts of phenolic resin and 12.5 to 15 parts of fiberglass to 100 parts of recycled fine powder material of phenolic plastic finished products; mixing at high speed of 400 to 500 revolutions per minute for 30 to 35 minutes; adding the mixed raw material to a charging hopper of a screw extruding machine; preheating by a machine; setting the frequency of rotating speed of the screw extruding machine at 25 Hz; starting to charge; increasing the charging frequency from 0 Hz to 30 Hz; starting to freezing water when the extruding machine starts to extrude powder material; resetting the temperature of three temperature areas; measuring the temperature of the material by using an infrared temperature measuring instrument to ensure that the temperature of the material is controlled between 90 DEG C to 110 DEG C; pelleting and cooling; crushing and screening out; and recycling. The processing method has the advantages that the fine powder material of the phenolic plastic finished products is pelleted and used again; waste is reduced and production cost is reduced.
Description
Technical field
The present invention relates to a kind of processing method of recycling of phenolaldehyde moulding compound powder, particularly the processing method of phenolaldehyde moulding compound finished product fine powder material recycling.
Background technology
Phenolaldehyde moulding compound is commonly called as phenolic moulding powder, is a kind of hard and crisp thermosetting plastics, is the general name of the plastics of base material with phenolic resins, is one of most important thermosetting plastics, is widely used as electrically insulating material, furniture element, commodity, handicraft etc.
After phenolaldehyde moulding compound is mixed by raw material usually, through extruding, two roll-in in flakes, cool off carrying on the steel band, after reaching cooling and requiring, re-use pulverizer and pulverize, make through screening.
The screening situation of above-mentioned fine powder is: the mode that adopts wide-meshed screen and fine screen mesh to combine is usually screened, and the aperture of wide-meshed screen is 7 millimeters, and the aperture of fine screen mesh is 375 microns, and what the client needed is the powder of aperture between 375 microns to 7 millimeters.Greater than 7 millimeters be the meal material, generally few; Less than 375 microns be fine powder material, mainly be in crushing process, produce when grinder blade is smashed tablet, account for usually about the 10-30% of finished product powder, not so the finished product powder that just need recycle can cause very big waste.
Existing recycling mode is very simple, normally directly will pass through fine powder material after the screening and sneak in the finished product by a certain percentage and utilize.Also will pass through screening after generally sneaking into, if without screening, fine powder material will be too much in the finished product, the bad use of client.After the screening, also can add the parts of fine powder again, but can not add too much, not so can cause the fine powder material accumulation too much, can not handle.This mode does not fundamentally solve the problem that fine powder material is recycled in fact, just simply sneaks into utilization, still is fine powder material in fact.
Summary of the invention
The purpose of this invention is to provide the processing method that a kind of phenolaldehyde moulding compound finished product fine powder material is recycled,, can be recycled through the inventive method so that the granularity that produces in the phenolaldehyde moulding compound production process does not reach the fine powder material of instructions for use.
For realizing above-mentioned purpose, the present invention realizes through following technical scheme:
The processing method that a kind of phenolaldehyde moulding compound finished product fine powder material is recycled may further comprise the steps:
A. raw material mixes: in 100 parts of phenolaldehyde moulding compound finished product fine powder materials recycling, add 6.25 ~ 10 parts of phenolic resins, 12.5 ~ 15 parts of glass fibres, re-use high-speed mixer, above-mentioned raw materials was mixed 30 ~ 35 minutes with the speed that per minute 400 ~ 500 changes;
B. machine preheating: be added to the loading hopper of screw extruder to mixed raw materials, open the screw extruder host power supply, configure the temperature of three warm areas, preheating 20 minutes, after preheating was good, the unlatching screw extruder also was set at 25Hz with speed-frequency;
C. reinforced heat treatment: open reinforced; Be added to 30Hz to reinforced frequency from 0Hz; When extruder head begins to extrude powder, open chilled water, be used for cooling off machine barrel and axle core; Simultaneously reset three warm area temperature, guarantees actual patrol and examine temperature promptly the actual temperature in each district be controlled at that a district 30 ~ 70 degree, two districts 50 ~ 110 are spent, three districts 80 ~ 120 are spent;
D. thermometric control: with the material temperature of infrared radiation thermometer measurement extrusion, the material temperature of extrusion can be regulated by three district's design temperatures, guarantees that the material temperature control is between 90 ~ 110 degree;
E. compressing tablet cooling: the material that screw extruder comes out re-uses steel band transmission cooling through the twin-roll machine tablet forming;
F. crushing and screening: pulverize the sheet stock that cooling is good through pulverizer, screen again after pulverizing;
G. after obtaining qualified powder through screening, recycle again through said method again for the product fine powder material that specification is too small.
In addition, the initial setting temperature of three warm areas is a district 70 degree, two districts, 70 degree, three districts, 50 degree among the step b.The temperature that resets of three warm areas is a district 30 degree, two districts, 50 degree, three districts, 40 degree among the step c.Design temperature is just through controlling the setting of chilled water circulation rate; And heating system is regulated and control the temperature of three warm areas; Because material reacts very strong in extruder; Even used the chilled water cooling, the temperature of three warm areas also can not be cooled to design temperature, so the actual temperature of patrolling and examining can be higher than design temperature.But design temperature still can be controlled actual scope of patrolling and examining temperature, such as setting 20 degree, patrols and examines temperature and is about: the 25-50 degree; Set 25 degree, patrol and examine temperature and be about: the 25-70 degree; Set 50 degree, patrol and examine temperature and be about: the 50-110 degree.Through the adjusting of design temperature, can control the actual temperature of patrolling and examining in the scope that requires like this, and through finely tuning the design temperature in three districts, the material temperature of further controlling extrusion is in the scope that requires.
The temperature of chilled water is controlled at 15 ± 2 degree among the step c.Chilled water is the equiping system of necessity of extruder, and the extruder control panel has chilled water to open switch, and cooling water adopts common running water, realizes cooling through cooling system.Cooling water temperature is set by cooling system control.The effect of chilled water is cooling machine barrel and axle core, to reach reaction temperature and the drop temperature of control raw material at extruder.
Above raw material components all by weight.
Beneficial effect of the present invention is: with the granulation utilization again of phenolaldehyde moulding compound finished product fine powder material, reduced waste, reduced production cost.
The specific embodiment
Below be the concrete data list of three embodiment:
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| The finished product fine powder material | 100 | 100 | 100 |
| Phenolic resins | 10 | 7.4 | 7.1 |
| Glass fibre | 15 | 14.6 | 12.5 |
| Incorporation time | 30 | 30 | 35 |
| One district's temperature (reality) | 55 | 57 | 56 |
| Two district's temperature (reality) | 52 | 65 | 64 |
| Three district's temperature (reality) | 100 | 110 | 102 |
Above raw material components all by weight.
Embodiment 1:
The processing method that a kind of phenolaldehyde moulding compound finished product fine powder material is recycled may further comprise the steps:
A. raw material mixes: in 100 parts of phenolaldehyde moulding compound finished product fine powder materials recycling, add 10 parts of phenolic resins, 15 parts of glass fibres, re-use high-speed mixer, above-mentioned raw materials was mixed 30 minutes with the speed that per minute 500 changes;
B. machine preheating: the loading hopper that is added to mixed raw materials screw extruder; Open the screw extruder host power supply; Configure the temperature of three warm areas, the initial setting temperature of three warm areas is a district 70 degree, two districts, 70 degree, three districts, 50 degree, preheating 20 minutes; After preheating is good, opens screw extruder and speed-frequency is set at 25Hz;
C. reinforced heat treatment: open and feed in raw material, be added to 30Hz to reinforced frequency from 0Hz, when extruder head begins to extrude powder, open chilled water, the temperature of chilled water is controlled at 15 ± 2 degree; Simultaneously reset three warm area temperature, the temperature that resets of three warm areas is that a district 30 is spent, two districts 50 are spent, three districts 40 are spent, and guarantees that the actual temperature of patrolling and examining is that each actual temperature of distinguishing is that a district 55 is spent, two districts 52 are spent, three districts 100 are spent;
D. thermometric control: with the material temperature of infrared radiation thermometer measurement extrusion, the material temperature of extrusion can be regulated by three district's design temperatures, guarantees that the material temperature control is between 90 ~ 110 degree;
E. compressing tablet cooling: the material that screw extruder comes out re-uses steel band transmission cooling through the twin-roll machine tablet forming;
F. crushing and screening: pulverize the sheet stock that cooling is good through pulverizer, screen again after pulverizing;
G. after obtaining qualified powder through screening, recycle again through said method again for the product fine powder material that specification is too small.
Embodiment 2:
The processing method that a kind of phenolaldehyde moulding compound finished product fine powder material is recycled may further comprise the steps:
A. raw material mixes: in 100 parts of phenolaldehyde moulding compound finished product fine powder materials recycling, add 7.4 parts of phenolic resins, 14.6 parts of glass fibres, re-use high-speed mixer, above-mentioned raw materials was mixed 30 minutes with the speed that per minute 500 changes;
B. machine preheating: the loading hopper that is added to mixed raw materials screw extruder; Open the screw extruder host power supply; Configure the temperature of three warm areas, the initial setting temperature of three warm areas is a district 70 degree, two districts, 70 degree, three districts, 50 degree, preheating 20 minutes; After preheating is good, opens screw extruder and speed-frequency is set at 25Hz;
C. reinforced heat treatment: open and feed in raw material, be added to 30Hz to reinforced frequency from 0Hz, when extruder head begins to extrude powder, open chilled water, the temperature of chilled water is controlled at 15 ± 2 degree; Simultaneously reset three warm area temperature, the temperature that resets of three warm areas is that a district 30 is spent, two districts 50 are spent, three districts 40 are spent, and guarantees that the actual temperature of patrolling and examining is that each actual temperature of distinguishing is that a district 57 is spent, two districts 65 are spent, three districts 110 are spent;
D. thermometric control: with the material temperature of infrared radiation thermometer measurement extrusion, the material temperature of extrusion can be regulated by three district's design temperatures, guarantees that the material temperature control is between 90 ~ 110 degree;
E. compressing tablet cooling: the material that screw extruder comes out re-uses steel band transmission cooling through the twin-roll machine tablet forming;
F. crushing and screening: pulverize the sheet stock that cooling is good through pulverizer, screen again after pulverizing;
G. after obtaining qualified powder through screening, recycle again through said method again for the product fine powder material that specification is too small.
Embodiment 3:
The processing method that a kind of phenolaldehyde moulding compound finished product fine powder material is recycled may further comprise the steps:
A. raw material mixes: in 100 parts of phenolaldehyde moulding compound finished product fine powder materials recycling, add 7.1 parts of phenolic resins, 12.5 parts of glass fibres, re-use high-speed mixer, above-mentioned raw materials was mixed 35 minutes with the speed that per minute 400 changes;
B. machine preheating: the loading hopper that is added to mixed raw materials screw extruder; Open the screw extruder host power supply; Configure the temperature of three warm areas, the initial setting temperature of three warm areas is a district 70 degree, two districts, 70 degree, three districts, 50 degree, preheating 20 minutes; After preheating is good, opens screw extruder and speed-frequency is set at 25Hz;
C. reinforced heat treatment: open and feed in raw material, be added to 30Hz to reinforced frequency from 0Hz, when extruder head begins to extrude powder, open chilled water, the temperature of chilled water is controlled at 15 ± 2 degree; Simultaneously reset three warm area temperature, the temperature that resets of three warm areas is that a district 30 is spent, two districts 50 are spent, three districts 40 are spent, and guarantees that the actual temperature of patrolling and examining is that each actual temperature of distinguishing is that a district 56 is spent, two districts 64 are spent, three districts 102 are spent;
D. thermometric control: with the material temperature of infrared radiation thermometer measurement extrusion, the material temperature of extrusion can be regulated by three district's design temperatures, guarantees that the material temperature control is between 90 ~ 110 degree;
E. compressing tablet cooling: the material that screw extruder comes out re-uses steel band transmission cooling through the twin-roll machine tablet forming;
F. crushing and screening: pulverize the sheet stock that cooling is good through pulverizer, screen again after pulverizing;
G. after obtaining qualified powder through screening, recycle again through said method again for the product fine powder material that specification is too small.
The examination criteria of following evaluating characteristics carries out according to standard GB 1404-1995 and GB1404.3-2008, and evaluating data is following:
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Relative density (g/cm 3） | 1.79-1.82 | 1.80-1.82 | 1.70-1.95 |
| Bending strength (Mpa) | 160-190 | 180-220 | 150-250 |
| Heat distortion temperature (℃) | 180-220 | 190-230 | 160-250 |
| Conclusion | Qualified | Qualified | Qualified |
Claims (4)
1. the processing method recycled of a phenolaldehyde moulding compound finished product fine powder material is characterized in that may further comprise the steps:
A. raw material mixes: in 100 parts of phenolaldehyde moulding compound finished product fine powder materials recycling, add 6.25 ~ 10 parts of phenolic resins, 12.5 ~ 15 parts of glass fibres, re-use high-speed mixer, above-mentioned raw materials was mixed 30 ~ 35 minutes with the speed that per minute 400 ~ 500 changes;
B. machine preheating: be added to the loading hopper of screw extruder to mixed raw materials, open the screw extruder host power supply, configure the temperature of three warm areas, preheating 20 minutes, after preheating was good, the unlatching screw extruder also was set at 25Hz with speed-frequency;
C. reinforced heat treatment: open reinforced; Be added to 30Hz to reinforced frequency from 0Hz; When extruder head begins to extrude powder, open chilled water, be used for cooling off machine barrel and axle core; Simultaneously reset three warm area temperature, guarantees actual patrol and examine temperature promptly the actual temperature in each district be controlled at that a district 30 ~ 70 degree, two districts 50 ~ 110 are spent, three districts 80 ~ 120 are spent;
D. thermometric control: with the material temperature of infrared radiation thermometer measurement extrusion, the material temperature of extrusion can be regulated by three district's design temperatures, guarantees that the material temperature control is between 90 ~ 110 degree;
E. compressing tablet cooling: the material that screw extruder comes out re-uses steel band transmission cooling through the twin-roll machine tablet forming;
F. crushing and screening: pulverize the sheet stock that cooling is good through pulverizer, screen again after pulverizing;
G. recycle: after the process screening obtains qualified powder, recycle again through said method again for the product fine powder material that specification is too small.
2. the processing method that phenolaldehyde moulding compound finished product fine powder material as claimed in claim 1 is recycled, the initial setting temperature that it is characterized in that three warm areas among the step b are a district 70 degree, two districts, 70 degree, three districts, 50 degree.
3. the processing method that phenolaldehyde moulding compound finished product fine powder material as claimed in claim 1 is recycled is characterized in that the temperature that resets of three warm areas is a district 30 degree, two districts, 50 degree, three districts, 40 degree among the step c.
4. the processing method that phenolaldehyde moulding compound finished product fine powder material as claimed in claim 1 is recycled is characterized in that the temperature of chilled water among the step c is controlled at 15 ± 2 degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102746605A CN102441950B (en) | 2011-09-16 | 2011-09-16 | Processing method for recycling fine powder material of phenolic plastic finished products |
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| CN2011102746605A CN102441950B (en) | 2011-09-16 | 2011-09-16 | Processing method for recycling fine powder material of phenolic plastic finished products |
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| CN102441950B CN102441950B (en) | 2013-09-18 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085214A (en) * | 2013-01-09 | 2013-05-08 | 无锡创达电子有限公司 | Method of processing phenolic moulding plastic by adopting novel cooling technique |
| CN107312291A (en) * | 2017-06-13 | 2017-11-03 | 广西信和新合成材料有限公司 | The processing method that phenolaldehyde moulding compound waste recovery is utilized |
| TWI647251B (en) * | 2018-03-08 | 2019-01-11 | Syndyne Industrial Co., Ltd. | Application method of reactive polymer phenolic resin |
| CN109486101A (en) * | 2018-11-27 | 2019-03-19 | 江苏中鹏新材料股份有限公司 | Recoverying and utilizing method without ammonia phenolaldehyde moulding compound fine powder |
| CN111363302A (en) * | 2020-03-18 | 2020-07-03 | 常熟东南塑料有限公司 | Phenolic molding compound reinforced by phenolic molding compound reclaimed material powder |
| CN112454715A (en) * | 2020-11-24 | 2021-03-09 | 南京未霞科技有限公司 | Pretreatment method of polypropylene resin granulation raw material |
| CN113043493A (en) * | 2021-03-19 | 2021-06-29 | 常熟东南塑料有限公司 | High-yield preparation process of phenolic molding plastic |
| CN116041899A (en) * | 2022-12-21 | 2023-05-02 | 开化瑞达塑胶科技有限公司 | Method for preparing ammonia-free phenolic moulding material by efficiently utilizing waste phenolic moulding material products |
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| EP1281497A1 (en) * | 2001-07-30 | 2003-02-05 | Sumitomo Bakelite Co., Ltd. | Method and apparatus for granulating thermosetting resins |
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| CN1143541A (en) * | 1995-08-24 | 1997-02-26 | 上海欧亚合成材料有限公司 | Phenolics milling roller disintegrating technique |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085214A (en) * | 2013-01-09 | 2013-05-08 | 无锡创达电子有限公司 | Method of processing phenolic moulding plastic by adopting novel cooling technique |
| CN103085214B (en) * | 2013-01-09 | 2014-11-26 | 无锡创达电子有限公司 | Method of processing phenolic moulding plastic by adopting novel cooling technique |
| CN107312291A (en) * | 2017-06-13 | 2017-11-03 | 广西信和新合成材料有限公司 | The processing method that phenolaldehyde moulding compound waste recovery is utilized |
| TWI647251B (en) * | 2018-03-08 | 2019-01-11 | Syndyne Industrial Co., Ltd. | Application method of reactive polymer phenolic resin |
| CN109486101A (en) * | 2018-11-27 | 2019-03-19 | 江苏中鹏新材料股份有限公司 | Recoverying and utilizing method without ammonia phenolaldehyde moulding compound fine powder |
| CN111363302A (en) * | 2020-03-18 | 2020-07-03 | 常熟东南塑料有限公司 | Phenolic molding compound reinforced by phenolic molding compound reclaimed material powder |
| CN112454715A (en) * | 2020-11-24 | 2021-03-09 | 南京未霞科技有限公司 | Pretreatment method of polypropylene resin granulation raw material |
| CN113043493A (en) * | 2021-03-19 | 2021-06-29 | 常熟东南塑料有限公司 | High-yield preparation process of phenolic molding plastic |
| CN116041899A (en) * | 2022-12-21 | 2023-05-02 | 开化瑞达塑胶科技有限公司 | Method for preparing ammonia-free phenolic moulding material by efficiently utilizing waste phenolic moulding material products |
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| CN102441950B (en) | 2013-09-18 |
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