CN104559121A - Modification production method of polycarbonate engineering plastic - Google Patents
Modification production method of polycarbonate engineering plastic Download PDFInfo
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- CN104559121A CN104559121A CN201510073999.7A CN201510073999A CN104559121A CN 104559121 A CN104559121 A CN 104559121A CN 201510073999 A CN201510073999 A CN 201510073999A CN 104559121 A CN104559121 A CN 104559121A
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- polycarbonate
- engineering plastic
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- modified
- producing method
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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
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/223—Packed additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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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)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Polyesters Or Polycarbonates (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention relates to a modification production method of polycarbonate engineering plastic, which comprises the following steps: melting polycarbonate with the molecular weight of 17000-21000 at 240 DEG C, and after the polycarbonate is completely molten, directly adding assistants into the molten polycarbonate to obtain a molten mixture; uniformly mixing and extruding the molten mixture through a double screw extruder, wherein the technological parameters of the extrusion are as follows: the extrusion temperature is 295 DEG C, the extrusion pressure is 4.5 MPa, the melt index of polycarbonate is 15g/10 minutes, and the specific gravity of polycarbonate is 1.2 g/cm<3>; and cooling the extruded strips with water, cooling with air, granulating in a strip granulating mill, passing through a vibrating screen to remove unacceptable granules, carrying out airing and baking on the acceptable granules, and packaging. Compared with the prior art, the modified polycarbonate engineering plastic prepared by the technique has the advantages of uniform product quality and favorable modification effect, and can be widely used in automobile electric and electronic communication machinery industry.
Description
Technical field
The present invention relates to the modified producing method of engineering plastics, particularly relate to a kind of production method of polycarbonate engineering plastic.
Background technology
Current, because energy prices are surging, under the day by day fierce environment of market competition, the general-purpose plastics raw material of world market supply is the PP Pipe Compound through modification in resin polymerization process mostly, its stable performance, easy to use, enjoy plastic working enterprise to favor, there is the very strong market competitiveness.Current most of company generally grasps at general modified plastics technical elements, the existing research and development be just devoted to modified engineered plastic kind.Flourish along with domestic automobile electric and electronic communication mechanical industry, the demand of modified engineered plastic will significantly rise, and various high strength heat resistant type engineering plastics will be used widely.Modified engineered plastic industry will towards product high performance, customizations, seriation future development.And polycarbonate is emphasis places of engineering plastic modification PRODUCTION TRAITS as a kind of important engineering plastics.
It is mostly enter forcing machine with solid state that the modification of existing polycarbonate engineering plastic is produced, and adds certain auxiliary agent simultaneously and adjusts related process parameters to reach the effect of modification.But aforementioned production method is owing to can not adopt the mode charging of continuously feeding, batch feed makes the difference between product batches overcome, make products obtained therefrom streaking, auxiliary agent and polycarbonate solid can be made can not fully to mix to reach best modified effect with feeding-in solid body simultaneously.
Summary of the invention
Object of the present invention, provides the polycarbonate modified production method that a kind of product quality is even, modified effect is good exactly in order to solve the problem.
The object of the present invention is achieved like this:
The modified producing method of a kind of polycarbonate engineering plastic of the present invention, comprises the following steps:
Step one: the polycarbonate melting under 240 DEG C of temperature condition by molecular weight being 17000-21000, after complete melting, directly add in the polycarbonate of molten state account for material total amount 0.4%wt auxiliary agent, account for the silicone master batch of material total amount 1%wt and account for the alkali-free chopped glass fiber of material total amount 20%wt, obtain molten mixture;
Step 2: molten mixture obtained for step one is mixed by twin screw extruder and extrudes, and processing parameter when extruding is as follows: extrusion temperature is 295 DEG C, extrusion pressure is 4.5Mpa, polycarbonate melt index is 15g/10min, polycarbonate proportion: 1.2g/cm
3;
Step 3: extrude material strip through water-cooled, air-cooled after enter strand pelletizer pelletizing, remove defective particle through bolting, mesh size is Φ 3mm, conforming particle through air-dry, dry after packing.
The modified producing method of above-mentioned a kind of polycarbonate engineering plastic, wherein, the auxiliary agent employing suffocated amine antioxidant described in step one and tributyl phosphate kind antioxidant in mass ratio 1:3 carry out composite obtained.
The modified producing method of above-mentioned a kind of polycarbonate engineering plastic, wherein, in step 3, the temperature of water-cooled is 35-45 DEG C, and air-cooled temperature is 20-30 DEG C.
The modified producing method of above-mentioned a kind of polycarbonate engineering plastic, wherein, the particle diameter of conforming particle described in step 3 is Φ 2mm-Φ 3mm.
Compared with prior art, the present invention changes when producing modified polycarbonate engineering plastics the state that polycarbonate enters forcing machine, first enters forcing machine again by after polycarbonate melt.Above-mentioned change not only solves the shortcoming of batch feed in prior art, and auxiliary agent can be made to mix more fully with polycarbonate.Based on above reason, modified polycarbonate engineering plastics of the present invention have the advantage that product quality is even, modified effect is good.
Embodiment
Comparative example
Conventionally, the polycarbonate modified production method of engineering plastics comprises the following steps:
First the polycarbonate powder of 17000-21000 molecular weight is mixed 5 minutes with glass, glass addition is the 25%wt of material total amount, after mixing, material is put into forcing machine hopper, by feed screw, material feeding is carried out granulation to main frame, then remove after defective particle through bolting again through water-cooled, air-dry, pelletizing, dry, weigh and pack.
Embodiment
A modified producing method for polycarbonate engineering plastic, comprises the following steps:
Step one: the polycarbonate melting under 240 DEG C of temperature condition by molecular weight being 17000-21000, directly add in the polycarbonate of molten state account for material total amount 0.4%wt auxiliary agent, account for the silicone master batch of material total amount 1%wt and account for the alkali-free chopped glass fiber of material total amount 20%wt, wherein, auxiliary agent adopt suffocated amine antioxidant and tributyl phosphate kind antioxidant in mass ratio 1:3 carry out composite obtaining;
Step 2: molten mixture obtained for step one is mixed by twin screw extruder and extrudes, and processing parameter when extruding is as follows: extrusion temperature is 295 DEG C, extrusion pressure is 4.5Mpa, polycarbonate melt index is 15g/10min, polycarbonate proportion: 1.2g/cm
3;
Step 3: extrude material strip and enter strand pelletizer pelletizing after water-cooled (water-cooled temperature 40 DEG C), air-cooled (wind chill temperatures 23 DEG C); defective particle is removed through bolting; mesh size is Φ 3mm, conforming particle (particle diameter is Φ 2mm-Φ 3mm) through air-dry, dry after packing.
In above-mentioned raw materials, silicone master batch selects Dow Corning Corporation, model is the product of MB50-002, alkali-free chopped glass fiber selects megalith glass company, model is the product of ECS13-4.5-510, suffocated amine antioxidant selects Ciba Fine Chemical Stock Co., Ltd of Switzerland, model is the product of 1010, and tributyl phosphate kind antioxidant selects Ciba Fine Chemical Stock Co., Ltd of Switzerland, model is the product of 168.
Following table is that the product performance of the modified polycarbonate engineering plastics that reference examples and embodiment obtain compare:
As seen from the above table, the polycarbonate engineering plastic obtained by the present invention is all high than the polycarbonate engineering plastic obtained by prior art in tensile strength, modulus in flexure, simply supported beam notched Izod impact strength three.Specifically, in tensile strength, 12.5% is improved than prior art by gained polycarbonate engineering plastic of the present invention, in modulus in flexure, improve 8.1% than prior art by gained polycarbonate engineering plastic of the present invention, in simply supported beam notched Izod impact strength, improve 22.5% than prior art by gained polycarbonate engineering plastic of the present invention.Known from above-mentioned data, significantly improved than prior art on modified effect by gained polycarbonate engineering plastic of the present invention.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, various conversion or modification can also be made, therefore all equivalent technical schemes also should belong to category of the present invention, should be limited by each claim.
Claims (4)
1. a modified producing method for polycarbonate engineering plastic, is characterized in that, comprises the following steps:
Step one: the polycarbonate melting under 240 DEG C of temperature condition by molecular weight being 17000-21000, after complete melting, directly add in the polycarbonate of molten state account for material total amount 0.4%wt auxiliary agent, account for the silicone master batch of material total amount 1%wt and account for the alkali-free chopped glass fiber of material total amount 20%wt, obtain molten mixture;
Step 2: molten mixture obtained for step one is mixed by twin screw extruder and extrudes, and processing parameter when extruding is as follows: extrusion temperature is 295 DEG C, extrusion pressure is 4.5Mpa, polycarbonate melt index is 15g/10min, polycarbonate proportion: 1.2g/cm
3;
Step 3: extrude material strip through water-cooled, air-cooled after enter strand pelletizer pelletizing, remove defective particle through bolting, mesh size is Φ 3mm, conforming particle through air-dry, dry after packing.
2. the modified producing method of a kind of polycarbonate engineering plastic as claimed in claim 1, is characterized in that, the auxiliary agent employing suffocated amine antioxidant described in step one and tributyl phosphate kind antioxidant in mass ratio 1:3 carry out composite obtained.
3. the modified producing method of a kind of polycarbonate engineering plastic as claimed in claim 1, is characterized in that, in step 3, the temperature of water-cooled is 35-45 DEG C, and air-cooled temperature is 20-30 DEG C.
4. the modified producing method of a kind of polycarbonate engineering plastic as claimed in claim 1, is characterized in that, the particle diameter of conforming particle described in step 3 is Φ 2mm-Φ 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510073999.7A CN104559121A (en) | 2015-02-12 | 2015-02-12 | Modification production method of polycarbonate engineering plastic |
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| CN201510073999.7A CN104559121A (en) | 2015-02-12 | 2015-02-12 | Modification production method of polycarbonate engineering plastic |
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| CN104559121A true CN104559121A (en) | 2015-04-29 |
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| CN201510073999.7A Pending CN104559121A (en) | 2015-02-12 | 2015-02-12 | Modification production method of polycarbonate engineering plastic |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109181262A (en) * | 2018-07-24 | 2019-01-11 | 东莞市创永佳新材料有限公司 | Low-temperature-resistant, high-weather-resistant and hydrolysis-resistant PC flame-retardant material and preparation method and device thereof |
| CN110218429A (en) * | 2019-05-21 | 2019-09-10 | 品诚塑胶科技（上海）有限公司 | A kind of transparent glass fibre enhancing PC plate material and preparation method thereof |
| CN113105734A (en) * | 2021-05-21 | 2021-07-13 | 上海升广科技有限公司 | Weather-proof, high-toughness, wear-resistant and flame-retardant alloy plastic material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016411A (en) * | 2006-08-21 | 2007-08-15 | 中国神马集团有限责任公司 | On-line modified producing method for engineering plastics |
| CN103665815A (en) * | 2013-12-19 | 2014-03-26 | 上海锦湖日丽塑料有限公司 | Low-warpage reinforced polycarbonate alloy and preparation method thereof |
| CN203637129U (en) * | 2013-12-20 | 2014-06-11 | 上海玉城灿星塑料材料有限公司 | Efficient double-screw vertical plastic extruder |
-
2015
- 2015-02-12 CN CN201510073999.7A patent/CN104559121A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016411A (en) * | 2006-08-21 | 2007-08-15 | 中国神马集团有限责任公司 | On-line modified producing method for engineering plastics |
| CN103665815A (en) * | 2013-12-19 | 2014-03-26 | 上海锦湖日丽塑料有限公司 | Low-warpage reinforced polycarbonate alloy and preparation method thereof |
| CN203637129U (en) * | 2013-12-20 | 2014-06-11 | 上海玉城灿星塑料材料有限公司 | Efficient double-screw vertical plastic extruder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109181262A (en) * | 2018-07-24 | 2019-01-11 | 东莞市创永佳新材料有限公司 | Low-temperature-resistant, high-weather-resistant and hydrolysis-resistant PC flame-retardant material and preparation method and device thereof |
| CN110218429A (en) * | 2019-05-21 | 2019-09-10 | 品诚塑胶科技（上海）有限公司 | A kind of transparent glass fibre enhancing PC plate material and preparation method thereof |
| CN113105734A (en) * | 2021-05-21 | 2021-07-13 | 上海升广科技有限公司 | Weather-proof, high-toughness, wear-resistant and flame-retardant alloy plastic material and preparation method thereof |
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Application publication date: 20150429 |
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