CN103665815A - Low-warpage reinforced polycarbonate alloy and preparation method thereof - Google Patents
Low-warpage reinforced polycarbonate alloy and preparation method thereof Download PDFInfo
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- CN103665815A CN103665815A CN201310704151.0A CN201310704151A CN103665815A CN 103665815 A CN103665815 A CN 103665815A CN 201310704151 A CN201310704151 A CN 201310704151A CN 103665815 A CN103665815 A CN 103665815A
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- polycarbonate alloy
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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
- B29C48/92—Measuring, controlling or regulating
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Abstract
The invention relates to low-warpage reinforced polycarbonate alloy and a preparation method thereof. The low-warpage reinforced polycarbonate alloy is prepared from the following raw materials in parts by weight: 55-85 parts of matrix resin, 10-40 parts of ground glass and 0.1-5 parts of other components. The preparation method comprises the following steps: preparing the raw materials according to a formula, mixing the matrix resin with the other components in a medium-speed mixer for 20 minutes, adding a mixture into a double-screw extruder from a main feeding hole, individually adding the ground glass into the double-screw extruder from a side feeding hole according to the formula proportion, melting and extruding the raw materials in the double-screw extruder, and granulating to prepare the low-warpage reinforced polycarbonate alloy. Compared with the prior art, the preparation method has the advantages that high warpage of reinforced polycarbonate is improved on the premise of reducing the material cost, and low-warpage reinforced resin is obtained by the characteristic that horizontal and longitudinal shrinkage ratios are different as the ground glass cannot be oriented in the flowing direction during formation.
Description
Technical field
The present invention relates to polymer arts, especially relate to a kind of low warpage reinforced polycarbonate Alloy And Preparation Method.
Background technology
Along with the development of plastic industry, common engineering plastics can not meet the requirement of client to its intensity completely, so reinforced plastic alloy arises at the historic moment, glass fibre reinforcement as known to everyone, talcum powder strongthener, wollastonite strongthener etc.But glass fibre and wollastonite due to its in injection moulding process easily along with mobility direction orientation, therefore cause material transverse and longitudinal heterogeneity, thereby and shrinking percentage is inconsistent in process of cooling causes material generation buckling deformation.Although and talcum powder is without anisotropy, its intensity is not as glass fibre, and it is alkalescence conventionally, easily makes part material degradation, as the polycarbonate of mentioning in the present invention.Once polycarbonate material is degraded, will bring the massive losses of toughness, affect its use.
The product that conventionally need to increase rigidity is all large-scale or ultrathin products, because large thin product is more difficult to by its shape of support structure, part producer can be used steel disc or magnalium supporting structure in product design, but can cause the huge waste on cost like this, therefore often select strongthener injection moulding.But because material all buckling deformation can occur after moulding, these distortion can affect follow-up assembling and can introduce a large amount of internal stresss and the outward appearance that affects material performance even.Some slight distortion can be adjusted by complete processing, some moderate finite deformations must obtain higher planeness by shaping, and this has increased shaping cycle on the one hand greatly, has reduced product yield, also increased process costs, done something against one's will often simultaneously.
Application number is that 200910197243.8 Chinese patent discloses a kind of low warping high surface gloss glass fiber reinforced polyester composite material and preparation method, raw material adopts polycarbonate, poly terephthalic acid diol ester, toughner, kaolin, glass fibre, processing aid etc., thereby this patent discloses by adding armorphous PC to reduce the material that PBT degree of crystallinity is improved glass fibre orientation, and this patent is PC system for system, if same by adding the mobile crystal type material of a large amount of height to improve angularity in this system, lose to a great extent the toughness of PC.
A kind of low warpage reinforced polycarbonate alloy the present invention relates to, utilize milled glass can streamwise when moulding orientation cause transverse and longitudinal shrinking percentage inconsistent and obtain low warpage and strengthen resin.
Summary of the invention
Object of the present invention is exactly the low warpage reinforced polycarbonate Alloy And Preparation Method that provides a kind of transverse and longitudinal shrinking percentage to be consistent in order to overcome the defect of above-mentioned prior art existence.
Object of the present invention can be achieved through the following technical solutions:
A low warpage reinforced polycarbonate alloy, adopts the raw material of following component and weight part content to make:
Matrix resin 55-85;
Milled glass 10-40;
Other component 0.1-5.
Described matrix resin is that weight-average molecular weight is the polycarbonate alloy of 25000-35000.
Described polycarbonate alloy is that dihydric phenol reacts the aromatic polycarbonate resin making with carbonate precursor,
Described dihydric phenol comprises two (4-hydroxy phenyl) propane, 1 of 2,2-, two (4-hydroxy phenyl) ethane of 1-or two (hydroxy phenyl) naphthenic hydrocarbon,
Described carbonate precursor comprises carbon phthalein halogen, carbonic ether, haloformate, phosgene or diphenyl carbonate.
Described milled glass is the E type glass fibre grinding, and particle diameter is 150 μ m-1700 μ m.
Other described component is selected from least one in toughner, oxidation inhibitor, interior lubricated and demoulding chaste tree, static inhibitor, stablizer, dyestuff or pigment.
Described toughner comprises physics plasticized modifier and/or chemical plasticized modifier.
Described physics plasticized modifier comprises acrylic acid or the like toughner, vinylformic acid-silicone rubber kinds toughner, ethylene-methyl acrylate, ethylene-propylene acid butyl ester, acrylonitrile-butadiene-styrene copolymer toughner, acrylonitrile-butadiene-acrylate copolymer or MBS
Described chemical toughner comprises ethylene-acrylate-glycidyl methacrylate terpolymer, ethylene-vinyl acetate copolymer-functionalization maleic anhydride or styrene-ethylene butylene-styrene trimer-functionalization maleic anhydride.
The preparation method of low warpage reinforced polycarbonate alloy, adopts following steps:
(1) according to formula, prepare raw material:
(2) matrix resin and other component are mixed to 20min in moderate-speed mixers, from main spout, add twin screw extruder;
(3) milled glass is added twin screw extruder by formula rate from side spout separately;
(4) above-mentioned raw materials is melt extruded in twin screw extruder, granulation, prepares low warpage reinforced polycarbonate alloy.
Described twin screw extruder comprises that ten temperature controlled region and two vacuumize place, the temperature in temperature control 1-2 district is 200-280 ℃, the temperature in temperature control 3-4 district is 200-250 ℃, the temperature in temperature control 5-6 district is 200-280 ℃, the temperature in temperature control 7-8 district is 200-280 ℃, the temperature in temperature control 9-10 district is 200-260 ℃, and the place of vacuumizing lays respectively at the end of material conveying section, the starting end of melt zone and metering zone.
Described milled glass adds from the temperature control 5-7 district of twin screw extruder.
Compared with prior art, the present invention grinds glass fiber-reinforced polycarbonate alloy planeness and is much better than and uses circular glass filling to use when very consistent, and along with the increase of toughner, planeness does not have considerable change.As previously mentioned, circular glass is bar-shaped material, in moulding process, can be orientated along flow direction, after cooling, prolong mobility direction and perpendicular flow direction shrinking percentage is inconsistent, causing buckling deformation, is sheet and grind glass, in moulding process, can not be orientated, thereby can not cause every abnormity, angularity can obtain very big degree and improve.And adding of toughner is mainly raising toughness of material, in moulding process, can not affect and grind flowing of glass, therefore can not affect the angularity of material.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
The selected PC trade mark is universal PC 1100, Korea S Hunan petroleum chemistry company.
Selected milled glass, REF-600A, Nippon Sheet Glass Co Ltd.
Remaining component all adopts commercially available auxiliary agent.
Embodiment 1
By each component by weight: PC110065, REF-600A30, toughner 5.The twin screw extruder that is 200-280 ℃ through melt temperature is extruded, granulation.Wherein each district's temperature is: the temperature in twin screw extruder 1-2 district is 200-280 ℃, and the temperature in 3-4 district is 200-280 ℃, and the temperature in 5-6 district is 200-280 ℃, and the temperature in temperature control 7-8 district is 200-280 ℃, and the temperature in temperature control 9-10 district is 200-260 ℃.
Embodiment 2
By each component by weight: PC110075, REF-600A20, toughner 5.The twin screw extruder that is 200-280 ℃ through melt temperature is extruded, granulation.Wherein each district's temperature is: the temperature in twin screw extruder 1-2 district is 200-280 ℃, and the temperature in 3-4 district is 200-280 ℃, and the temperature in 5-6 district is 200-280 ℃, and the temperature in temperature control 7-8 district is 200-280 ℃, and the temperature in temperature control 9-10 district is 200-260 ℃.
Embodiment 3
By each component by weight: PC110085, REF-600A10, toughner 5.The twin screw extruder that is 200-280 ℃ through melt temperature is extruded, granulation.Wherein each district's temperature is: the temperature in twin screw extruder 1-2 district is 200-280 ℃, and the temperature in 3-4 district is 200-280 ℃, and the temperature in 5-6 district is 200-280 ℃, and the temperature in temperature control 7-8 district is 200-280 ℃, and the temperature in temperature control 9-10 district is 200-260 ℃.
Embodiment 4
By each component by weight: PC110067, REF-600A30, toughner 3.The twin screw extruder that is 200-280 ℃ through melt temperature is extruded, granulation.Wherein each district's temperature is: the temperature in twin screw extruder 1-2 district is 200-280 ℃, and the temperature in 3-4 district is 200-280 ℃, and the temperature in 5-6 district is 200-280 ℃, and the temperature in temperature control 7-8 district is 200-280 ℃, and the temperature in temperature control 9-10 district is 200-260 ℃.
Embodiment 5
By each component by weight: PC110063, REF-600A30, toughner 7.The twin screw extruder that is 200-280 ℃ through melt temperature is extruded, granulation.Wherein each district's temperature is: the temperature in twin screw extruder 1-2 district is 200-280 ℃, and the temperature in 3-4 district is 200-280 ℃, and the temperature in 5-6 district is 200-280 ℃, and the temperature in temperature control 7-8 district is 200-280 ℃, and the temperature in temperature control 9-10 district is 200-260 ℃.
Embodiment 6
By each component by weight: PC110065, g-glass fiber30, toughner 5.The twin screw extruder that is 200-280 ℃ through melt temperature is extruded, granulation.Wherein each district's temperature is: the temperature in twin screw extruder 1-2 district is 200-280 ℃, and the temperature in 3-4 district is 200-280 ℃, and the temperature in 5-6 district is 200-280 ℃, and the temperature in temperature control 7-8 district is 200-280 ℃, and the temperature in temperature control 9-10 district is 200-260 ℃.
Six formulas, by being extruded into plastic pellet, then are injection molded into the plastic of 120mm*120mm*3mm, with feeler gauge, measure each scheme warpage degree:
From experimental result, can find out, when filling very unanimously, use grinds glass fiber-reinforced polycarbonate alloy planeness and is much better than use prototype glass.And along with the increase of toughner, planeness does not have considerable change.
Claims (10)
1. a low warpage reinforced polycarbonate alloy, is characterized in that, adopts the raw material of following component and weight part content to make:
Matrix resin 55-85;
Milled glass 10-40;
Other component 0.1-5.
2. a kind of low warpage reinforced polycarbonate alloy according to claim 1, is characterized in that, described matrix resin is that weight-average molecular weight is the polycarbonate alloy of 25000-35000.
3. a kind of low warpage reinforced polycarbonate alloy according to claim 2, is characterized in that, described polycarbonate alloy is that dihydric phenol reacts the aromatic polycarbonate resin making with carbonate precursor,
Described dihydric phenol comprises two (4-hydroxy phenyl) propane, 1 of 2,2-, two (4-hydroxy phenyl) ethane of 1-or two (hydroxy phenyl) naphthenic hydrocarbon,
Described carbonate precursor comprises carbon phthalein halogen, carbonic ether, haloformate, phosgene or diphenyl carbonate.
4. a kind of low warpage reinforced polycarbonate alloy according to claim 1, is characterized in that, described milled glass is the E type glass fibre grinding, and particle diameter is 150 μ m-1700 μ m.
5. a kind of low warpage reinforced polycarbonate alloy according to claim 1, is characterized in that, other described component is selected from least one in toughner, oxidation inhibitor, interior lubricated and demoulding chaste tree, static inhibitor, stablizer, dyestuff or pigment.
6. a kind of low warpage reinforced polycarbonate alloy according to claim 5, is characterized in that, described toughner comprises physics plasticized modifier and/or chemical plasticized modifier.
7. a kind of low warpage reinforced polycarbonate alloy according to claim 6, is characterized in that,
Described physics plasticized modifier comprises acrylic acid or the like toughner, vinylformic acid-silicone rubber kinds toughner, ethylene-methyl acrylate, ethylene-propylene acid butyl ester, acrylonitrile-butadiene-styrene copolymer toughner, acrylonitrile-butadiene-acrylate copolymer or MBS
Described chemical toughner comprises ethylene-acrylate-glycidyl methacrylate terpolymer, ethylene-vinyl acetate copolymer-functionalization maleic anhydride or styrene-ethylene butylene-styrene trimer-functionalization maleic anhydride.
8. the preparation method of the low warpage reinforced polycarbonate alloy as described in any one in claim 1-7, is characterized in that, the method adopts following steps:
(1) according to formula, prepare raw material:
(2) matrix resin and other component are mixed to 20min in moderate-speed mixers, from main spout, add twin screw extruder;
(3) milled glass is added twin screw extruder by formula rate from side spout separately;
(4) above-mentioned raw materials is melt extruded in twin screw extruder, granulation, prepares low warpage reinforced polycarbonate alloy.
9. the preparation method of a kind of low warpage reinforced polycarbonate alloy according to claim 8, it is characterized in that, described twin screw extruder comprises that ten temperature controlled region and two vacuumize place, the temperature in temperature control 1-2 district is 200-280 ℃, the temperature in temperature control 3-4 district is 200-280 ℃, the temperature in temperature control 5-6 district is 200-280 ℃, the temperature in temperature control 7-8 district is 200-280 ℃, the temperature in temperature control 9-10 district is 200-260 ℃, and the place of vacuumizing lays respectively at the end of material conveying section, the starting end of melt zone and metering zone.
10. the preparation method of a kind of low warpage reinforced polycarbonate alloy according to claim 8, is characterized in that, described milled glass adds from the temperature control 5-7 district of twin screw extruder.
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| CN201310704151.0A CN103665815A (en) | 2013-12-19 | 2013-12-19 | Low-warpage reinforced polycarbonate alloy and preparation method thereof |
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| CN201310704151.0A CN103665815A (en) | 2013-12-19 | 2013-12-19 | Low-warpage reinforced polycarbonate alloy and preparation method thereof |
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Cited By (5)
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| CN104559121A (en) * | 2015-02-12 | 2015-04-29 | 上海玉城灿星塑料材料有限公司 | Modification production method of polycarbonate engineering plastic |
| CN105504738A (en) * | 2014-09-22 | 2016-04-20 | 苏州汉扬精密电子有限公司 | Halogen-free flame-retardant polycarbonate composite material and product thereof |
| CN105647142A (en) * | 2014-11-14 | 2016-06-08 | 苏州汉扬精密电子有限公司 | Halogen-free flame-retardant polycarbonate composite material and product thereof |
| CN108290404A (en) * | 2015-12-01 | 2018-07-17 | 三菱瓦斯化学株式会社 | Transparent resin laminate body |
| CN112852055A (en) * | 2021-01-06 | 2021-05-28 | 珠海格力新材料有限公司 | Filling modified PP material and preparation method thereof |
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| CN112852055A (en) * | 2021-01-06 | 2021-05-28 | 珠海格力新材料有限公司 | Filling modified PP material and preparation method thereof |
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