CN103467953A - Modified scratch-resistant polycarbonate composition and preparation method thereof - Google Patents
Modified scratch-resistant polycarbonate composition and preparation method thereof Download PDFInfo
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- CN103467953A CN103467953A CN2012101836276A CN201210183627A CN103467953A CN 103467953 A CN103467953 A CN 103467953A CN 2012101836276 A CN2012101836276 A CN 2012101836276A CN 201210183627 A CN201210183627 A CN 201210183627A CN 103467953 A CN103467953 A CN 103467953A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
Abstract
The invention relates to the technical field of high polymer material, and in particular to a modified scratch-resistant polycarbonate composition and a preparation method thereof. The modified scratch-resistant polycarbonate composition comprises the following components by weight: 70- 95 parts of polycarbonate, 3-25 parts of polymethyl methacrylate, 0.2-1 part of a compatibilizer and 0.3-1 part of an antioxidant. Compared with the prior art, the invention has the following advantages: (1) the modified scratch-resistant polycarbonate composition provided by the invention employs blending of high-liquidity polymethyl methacrylate and polycarbonate, and addition of the compatibilizer, so as to improve phenomenon of a pearlescent surface caused by incompatibility of polymethyl methacrylate and polycarbonate; and (2) the modified scratch-resistant polycarbonate composition can improve scratch-resistant performance of polycarbonate and at the same time maintain excellent mechanical properties.
Description
Technical field
The present invention relates to technical field of polymer materials, particularly a kind of modification scratch resistant polycarbonate compositions and preparation method thereof.
Background technology
Polycarbonate has numerous premium propertiess, the very good and anti-creep of its impelling strength, and dimensional stability is fine, and the use temperature scope is wide, and electrical insulating property is good, and good weathering resistance and nontoxicity are arranged simultaneously.It is widely used in instrument, illuminations and electronic apparatus industry.But the well-known shortcoming of polycarbonate is that its scratch resistance is very poor, be very easy to scratch, this has the appearance component of appearance requirement can't meet the demands for some, therefore in the application of these occasions, need to carry out modification to polycarbonate.
Current modal modification is when the polycarbonate polymerizable raw material, in molecule segment, adds other unit to carry out modification, thereby improves scratch resistance.But this way program complexity, be not suitable for general.Another modification mode is by polycarbonate and inorganic filler blend, as silicon-dioxide, and magnesium oxide etc., facts have proved, the drawback of these class methods is, inorganic filler is difficult to fully be dispersed in composition, thereby affects the over-all properties of composition and outward appearance etc.Also having a kind of method is by polycarbonate and another kind of rigid polymer blend, polymethylmethacrylate can be used as optional rigid polymer because of its good surface hardness, but is with the weak tendency of polymethylmethacrylate blend: due to the polymethylmethacrylate appearance that cause pearl effect incompatible with polycarbonate.
Summary of the invention
The first purpose of the present invention is to provide a kind of modification scratch resistant polycarbonate compositions, after solving polycarbonate of the prior art and polymethylmethacrylate blend, understands due to the polymethylmethacrylate technical matters that cause the appearance of pearl effect incompatible with polycarbonate.
The second purpose of the present invention is to provide a kind of preparation method of modification scratch resistant polycarbonate, after solving polycarbonate of the prior art and polymethylmethacrylate blend, understands due to the polymethylmethacrylate technical matters that cause the appearance of pearl effect incompatible with polycarbonate.
The object of the invention is achieved through the following technical solutions:
A kind of modification scratch resistant polycarbonate compositions, by the component that comprises following weight part, made:
Polycarbonate 70-95 part;
Polymethylmethacrylate 3-25 part;
0.2 ~ 1 part of compatilizer;
Oxidation inhibitor 0.3-1 part.
Preferably, described component also comprises 0.3 ~ 1 part of additive, and described additive is selected from one or more in flame retardant, weather-proof stablizer, softening agent, photostabilizer, pigment or dyestuff.
Preferably, described component also comprises toughner, and described toughner is not more than 5 parts.
Preferably, described toughner be selected from MBS terpolymer (MBS),, one or more in acrylonitrile styrene resin (AS) (AS), ABS high glue powder, polystyrene-poly ethene-polybutene-polystyrene (SEBS) or acrylate copolymer (ACR).
Preferably, described compatilizer is selected from one or more of polystyrene (PS), maleic anhydride grafted ABS (ABS-g), polystyrene-poly ethene-polybutene-polystyrene (SEBS) or epoxy resin.
Preferably, the melting index of described polymethylmethacrylate is 5 ~ 20.
Preferably, the pencil hardness of described polymethylmethacrylate is 3H ~ 5H.
Preferably, described oxidation inhibitor is selected from Hinered phenols antioxidant or phosphite ester kind antioxidant, described Hinered phenols antioxidant is selected from 2, 6-di-tert-butyl-4-methy phenol (antioxidant 264), 2, 4, 6-tri-butyl-phenol (oxidation inhibitor 246) or 2, one or more of 2'-thiobis (4-methyl-6-tert-butylphenol) (antioxidant 2246), described phosphite ester kind antioxidant is selected from β-(4 '-hydroxyl-3 ', 5 '-di-tert-butyl-phenyl) vinylformic acid octadecyl ester (antioxidant 1076), triphenyl phosphite, trisnonylphenyl phosphite, three (2, the 4-tert-butyl-phenyl) phosphorous acid ester (irgasfos 168) or four [methylene radical-3,-3 ', 5-(di-t-butyl-4-hydroxyl-phenyl) vinylformic acid] one or more in methane (antioxidant 1010).
A kind of preparation method of modification scratch resistant polycarbonate compositions comprises the following steps:
(1) take various raw materials in the ratio in formula, various raw materials are placed in to high-speed mixer, mix 5-20 minute under 60 ℃ of-90 ℃ of conditions;
(2) above-mentioned mixed material is sent in twin screw extruder, material the shearing of screw rod, mixing and carry under fully fusion, afterwards through extruding, tie rod and cooling, can be made into modification scratch resistant polycarbonate compositions pellet;
The temperature setting in each district of twin screw extruder in described step (2) is set to: 210 ℃ ~ 230 ℃, I district, 210 ℃ ~ 230 ℃, II district, 215 ℃ ~ 240 ℃, 215 ℃ ~ 245 ℃， IV district, III district, 215 ℃ ~ 250 ℃, V district, 215 ℃ ~ 250 ℃, VI district, 225 ℃ ~ 265 ℃, VII district, 225 ℃ ~ 270 ℃, VIII district, 235 ℃ ~ 275 ℃, VIIII district, 235 ℃ ~ 280 ℃, X district, 240 ℃ ~ 280 ℃ of head temperatures.
Compared with prior art, the present invention has following beneficial effect:
(1) modification scratch resistant polycarbonate compositions of the present invention adopts high workability polymethylmethacrylate and polycarbonate blending, and adds compatilizer, can improve the pearly-lustre surface phenomena caused because polymethylmethacrylate is incompatible with polycarbonate;
(2) modification scratch resistant polycarbonate compositions of the present invention can make the scraping and wiping resistance performance of polycarbonate improve, and simultaneously, also keeps good mechanical property.
Embodiment
Below in conjunction with embodiment, the invention will be further described, and its purpose only is better to understand the object of the invention, but not limits the scope of the invention.
Formula rate by embodiment 1-8 in table 1 takes various raw materials, the various raw materials that take are placed in to high-speed mixer, mix and fully mix in 15 minutes under 80 ℃ of conditions, pass through again pay-off, material is sent in twin screw extruder, material the shearing of screw rod, mixing and carry under fusion fully, afterwards through extruding, tie rod and cooling, make pellet.Pellet is made the standard batten through the screw rod injection moulding, carries out every Mechanics Performance Testing and flame retardant properties test.Testing standard and the results are shown in Table 2.
Wherein, the temperature setting in each district of screw rod is set to: 240 ℃, 241 ℃， IV district, 230 ℃， III district, 230 ℃， II district, I district, 250 ℃, 249 ℃， VII district, 245 ℃， VI district, V district, 261 ℃, VIII district, 260 ℃, VIIII district, 271 ℃, X district, 270 ℃ of head temperatures.
In specific embodiment, polycarbonate is from strange U.S., and model is 110U; Polymethylmethacrylate, from the LG chemistry, is selected melting index 5,15,3 kinds of models of 20; Toughner 1 is MBS, and from the Taihu Lake chemical industry, model is M51; Toughner 2 is AS, and from strange U.S., model is P107.
Data representation weight part in table 1(table)
Table 2
Table 2 can be found out, the pure polycarbonate with respect to ratio, modification scratch resistant polycarbonate compositions of the present invention shows good scraping and wiping resistance performance, when pressing the scratch resistance raising that increases composition shown in embodiment 1,2,3,4 below 20% addition along with the addition of polymethylmethacrylate, while adding because of toughner, its its mechanical properties can keep, adding of polymethylmethacrylate that can be not poor because of impact property and make the mechanical property of composition sharply descend.Shown in the comparison of embodiment 6,7,8, at used additive auxiliary agent, be all under the prerequisite of equal conditions, the polymethylmethacrylate that melting index is high more is conducive to the blend of polycarbonate and polymethylmethacrylate, all more favourable to mechanical property and the scratch resistance of composition.From the detected result of surperficial pearly-lustre, it is favourable that the high PMMA of melting index improves for surperficial pearly-lustre, and simultaneously, and mostly the amount of PMMA is more easily to form surperficial pearly-lustre, adds compatilizer can improve this situation.
Above disclosed be only several specific embodiments of the application, but the application is not limited thereto, the changes that any person skilled in the art can think of, all should drop in the application's protection domain.
Claims (10)
1. a modification scratch resistant polycarbonate compositions, is characterized in that, by the component that comprises following weight part, made:
Polycarbonate 70-95 part;
Polymethylmethacrylate 3-25 part;
0.2 ~ 1 part of compatilizer;
Oxidation inhibitor 0.3-1 part.
2. modification scratch resistant polycarbonate compositions as claimed in claim 1, it is characterized in that, described component also comprises 0.3 ~ 1 part of additive, and described additive is selected from one or more in flame retardant, weather-proof stablizer, softening agent, photostabilizer, pigment or dyestuff.
3. modification scratch resistant polycarbonate compositions as claimed in claim 1, is characterized in that, described component also comprises toughner, and described toughner is not more than 5 parts.
4. modification scratch resistant polycarbonate compositions as claimed in claim 3, is characterized in that, described toughner is selected from one or more in MBS, MAS, AS, ABS high glue powder, SEBS or ACR.
5. modification scratch resistant polycarbonate compositions as claimed in claim 1, is characterized in that, described compatilizer is selected from one or more in PS, ABS-g, SEBS or epoxy resin.
6. modification scratch resistant polycarbonate compositions as claimed in claim 1, is characterized in that, the melting index of described polymethylmethacrylate is 5 ~ 20.
7. modification scratch resistant polycarbonate compositions as claimed in claim 1, is characterized in that, the pencil hardness of described polymethylmethacrylate is 3H ~ 5H.
8. modification scratch resistant polycarbonate compositions as claimed in claim 1, is characterized in that, described oxidation inhibitor is selected from Hinered phenols antioxidant or phosphite ester kind antioxidant one or both.
9. modification scratch resistant polycarbonate compositions as claimed in claim 8, it is characterized in that, described Hinered phenols antioxidant is selected from 2, the 6-di-tert-butyl-4-methy phenol, 2, 4, 6-tri-butyl-phenol or 2, one or more of 2'-thiobis (4-methyl-6-tert-butylphenol), described phosphite ester kind antioxidant is selected from β-(4 '-hydroxyl-3 ', 5 '-di-tert-butyl-phenyl) vinylformic acid octadecyl ester, triphenyl phosphite, trisnonylphenyl phosphite, three (2, the 4-tert-butyl-phenyl) phosphorous acid ester or four [methylene radical-3,-3 ', 5-(di-t-butyl-4-hydroxyl-phenyl) vinylformic acid] one or more in methane.
10. the preparation method as arbitrary described modification scratch resistant polycarbonate compositions in claim 1-9, is characterized in that, comprises the following steps:
(1) take various raw materials in the ratio in formula, various raw materials are placed in to high-speed mixer, mix 5-20 minute under 60 ℃ of-90 ℃ of conditions;
(2) above-mentioned mixed material is sent in twin screw extruder, material the shearing of screw rod, mixing and carry under fully fusion, afterwards through extruding, tie rod and cooling, can be made into modification scratch resistant polycarbonate compositions pellet;
The temperature setting in each district of twin screw extruder in described step (2) is set to: 210 ℃ ~ 230 ℃, I district, 210 ℃ ~ 230 ℃, II district, 215 ℃ ~ 240 ℃, 215 ℃ ~ 245 ℃， IV district, III district, 215 ℃ ~ 250 ℃, V district, 215 ℃ ~ 250 ℃, VI district, 225 ℃ ~ 265 ℃, VII district, 225 ℃ ~ 270 ℃, VIII district, 235 ℃ ~ 275 ℃, VIIII district, 235 ℃ ~ 280 ℃, X district, 240 ℃ ~ 280 ℃ of head temperatures.
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| CN2012101836276A CN103467953A (en) | 2012-06-06 | 2012-06-06 | Modified scratch-resistant polycarbonate composition and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086969A (en) * | 2014-07-11 | 2014-10-08 | 上海锦湖日丽塑料有限公司 | Transparent scratch-resistant PC/PMMA (Poly Carbonate/Polymethyl Methacrylate) alloy material and preparation method thereof |
| CN104448760A (en) * | 2014-12-11 | 2015-03-25 | 苏州禾昌聚合材料股份有限公司 | Scratch-resistant high-light PC/ABS (Polycarbonate/Acrylonitrile-Butadiene-Styrene) material and preparation method thereof |
| CN105754315A (en) * | 2016-05-16 | 2016-07-13 | 苏州新区华士达工程塑胶有限公司 | Modified polycarbonic ester plastic |
| CN106883581A (en) * | 2017-04-24 | 2017-06-23 | 泉州信息工程学院 | A kind of antibacterial drinking water apparatus |
| CN110437599A (en) * | 2019-08-29 | 2019-11-12 | 常州威材新材料科技有限公司 | A kind of PC/PMMA alloy material and preparation method thereof |
| CN113831717A (en) * | 2021-10-18 | 2021-12-24 | 天津长芦海晶集团有限公司 | Flame-retardant high-gloss high-hardness polycarbonate composite material and preparation method thereof |
| CN114230998A (en) * | 2021-09-17 | 2022-03-25 | 无锡德塑新材料科技有限公司 | PC/PS/PMMA ternary alloy material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104086969A (en) * | 2014-07-11 | 2014-10-08 | 上海锦湖日丽塑料有限公司 | Transparent scratch-resistant PC/PMMA (Poly Carbonate/Polymethyl Methacrylate) alloy material and preparation method thereof |
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| CN104448760A (en) * | 2014-12-11 | 2015-03-25 | 苏州禾昌聚合材料股份有限公司 | Scratch-resistant high-light PC/ABS (Polycarbonate/Acrylonitrile-Butadiene-Styrene) material and preparation method thereof |
| CN105754315A (en) * | 2016-05-16 | 2016-07-13 | 苏州新区华士达工程塑胶有限公司 | Modified polycarbonic ester plastic |
| CN106883581A (en) * | 2017-04-24 | 2017-06-23 | 泉州信息工程学院 | A kind of antibacterial drinking water apparatus |
| CN110437599A (en) * | 2019-08-29 | 2019-11-12 | 常州威材新材料科技有限公司 | A kind of PC/PMMA alloy material and preparation method thereof |
| CN110437599B (en) * | 2019-08-29 | 2021-10-08 | 常州威材新材料科技有限公司 | PC/PMMA alloy material and preparation method thereof |
| CN114230998A (en) * | 2021-09-17 | 2022-03-25 | 无锡德塑新材料科技有限公司 | PC/PS/PMMA ternary alloy material and preparation method thereof |
| CN113831717A (en) * | 2021-10-18 | 2021-12-24 | 天津长芦海晶集团有限公司 | Flame-retardant high-gloss high-hardness polycarbonate composite material and preparation method thereof |
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Application publication date: 20131225 |