CN101875767B - High gloss special composite material for meter case and preparation method thereof - Google Patents
High gloss special composite material for meter case and preparation method thereof Download PDFInfo
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- CN101875767B CN101875767B CN2009101895022A CN200910189502A CN101875767B CN 101875767 B CN101875767 B CN 101875767B CN 2009101895022 A CN2009101895022 A CN 2009101895022A CN 200910189502 A CN200910189502 A CN 200910189502A CN 101875767 B CN101875767 B CN 101875767B
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Abstract
The invention discloses a high gloss special composite material for a meter case and a preparation method thereof. The composite material is prepared from the following raw materials by weight parts: polycarbonate, glass fiber, a toughening agent, a heat stabilizer and a lubricant. The preparation method comprises the steps of: weighing raw materials in proportion; firstly mixing the polycarbonate, the toughening agent, the heat stabilizer and the lubricant at medium speed; adding the glass fiber and mixing; melting extruding by a double-screw extruder; and granulating. Aiming at the problems of poor surface gloss, surface floating fiber and the like of traditional glass fiber reinforced polycarbonate, the invention provides the high gloss special composite material special for the meter case; and the composite material has low cost and bright surface without floating fiber.
Description
Technical field
The invention belongs to technical field of polymer materials, relate to a kind of high gloss special composite material for meter case and preparation method thereof, this material can be widely used in fields such as field of electronics, field of household appliances, auto parts machinery.
Background technology
Polycarbonate (PC) is the more water white macromolecular material of a kind of present use, has excellent shock resistance.But that its defective is a melt viscosity is big, processing characteristics is relatively poor, goods are prone to stress cracking.PC has heat-resisting height after processing matrix material with the spun glass blending, the life-time service temperature can reach 130 degree, and intensity is high, can replace PA to add fibre and be used as the power tool handle.Present meter case both domestic and external mainly is to select for use this material of PC+GF to process.But because the scattering problem of spun glass in polycarbonate melt causes its product surface to be easy to generate visual defects such as floating fibre, flow liner.For addressing this problem, a lot of enterprises and research unit improve the technology of the matrix material of PC and spun glass blending.The G3310M product of serial, the Japanese Supreme Being people of the 500R of Saudi Arabia SABIC company company has solved the problem of visual defects such as floating fibre, flow liner; But this two company all has been to use special customized short glass fiber; And having adopted special production technique just to address the above problem, wherein customized starting material cause cost high especially.
Summary of the invention
The technical problem that the present invention will solve is; Bad to the dispersion of spun glass in the prior art in polycarbonate melt; Cause product surface to be easy to generate visual defects such as floating fibre, flow liner; To adopting special material to cause the high problem of cost, the high gloss special composite material for meter case that a kind of cost is low, surface-brightening does not have floating fibre is provided.
The technical problem that the present invention further will solve is, the preparation method of simple, the easy to operate high gloss special composite material for meter case of a kind of technology is provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of high gloss special composite material for meter case, process by following materials based on weight:
Polycarbonate 80～95
Toughner 3～5
Thermo-stabilizer 0.3～1
Lubricant 0.5～1.0
Spun glass 5～20.
High gloss special composite material for meter case, preferably mainly process by the raw material of following parts by weight:
Polycarbonate 85～92
Toughner 4～5
Thermo-stabilizer 0.5～1
Lubricant 0.5～0.7
Spun glass 6～15.
In the high gloss special composite material for meter case, described polycarbonate is middle adhesive aggregation carbonic ether or low adhesive aggregation carbonic ether.The molecular weight of polycarbonate is between 22000 to 25000, the middle adhesive aggregation carbonic ether of selecting for use, low adhesive aggregation carbonic ether good fluidity, and toughness is better, is easy to coat spun glass.
Described toughner is the core-shell copolymerized thing of esters of acrylic acid or ethene-a olefin copolymer.Other toughner effect in the present invention is relatively poor, and needs the deal of interpolation bigger, to heat-resisting influential.
Described thermo-stabilizer is N, N '-two-(3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionyl group) hexanediamine.The thermostable effect of this thermo-stabilizer in the polycarbonate article is very good.
Described lubricant selected fatty acid acid amides.This modified fat acid acid amides (TAF) action effect is good, cost performance is higher.
Described spun glass is the compound of roving glass fiber and short glass fiber; Wherein roving glass fiber is the spun glass of thermoplastics with the alkali-free assembled roving; Short glass fiber is the spun glass of thermoplastics with the alkali-free chopped strand; Short glass fiber length is 2.5～3.5 millimeters, and wherein the diameter of roving glass fiber and short glass fiber all is 3～5 microns, and the quality percentage composition of short glass fiber in spun glass is 30%～60%.
A kind of preparation method of high gloss special composite material for meter case may further comprise the steps:
(1) takes by weighing polycarbonate, toughner, thermo-stabilizer, lubricant and spun glass according to proportioning raw materials;
(2) wherein polycarbonate, toughner, thermo-stabilizer, lubricant are carried out the middling speed mixing earlier;
(3) then that raw material and spun glass mixed in the step (2) is blended together, melt extrude granulation again through twin screw extruder.
Among the preparation method of high gloss special composite material for meter case, preferably include following steps:
(1) parts by weight according to proportioning raw materials take by weighing polycarbonate, toughner, thermo-stabilizer, lubricant and spun glass;
(2) earlier polycarbonate, toughner, thermo-stabilizer and lubricant were mixed in moderate-speed mixers 3～7 minutes;
(3) then that step (2) is mixed raw material and spun glass even blend form compound, melt extrude granulation through twin screw extruder; The twin screw extruder processing condition are: twin screw extruder one district's temperature is 180～260 ℃; Two district's temperature are 180～260 ℃, and three district's temperature are 180～260 ℃, and four district's temperature are 180～260 ℃; 180～260 ℃ in five districts, compound time of delivery in screw rod is 1～2 minute.
Low adhesive aggregation carbonic ether during the present invention adopts adds auxiliary agents such as toughner, thermo-stabilizer, lubricant, spun glass low adhesive aggregation carbonic ether in common is carried out the modification processing; Ability rapid shaping under lower mould temperature (80-100 ℃), the product surface light after the moulding does not have floating fibre, the high temperature that ability is about 140 ℃.Wherein adding toughner can make matrix material when playing screw, not ftracture; It is non-yellowing that thermo-stabilizer can suppress goods; Lubricant makes product surface bright and clean not floating fine; Spun glass makes goods that very high intensity arranged.Above-mentioned auxiliary agent is the commercial goods, need not special methods and prepares or handle, and has reduced production cost, makes the product that makes have competitive edge.
Adopt roving glass fiber and the composite use of short glass fiber among the present invention, can reach the effect of product surface light.Because the good fluidity of short glass fiber in product, disperse easily, but reinforced effects is poor slightly; And the roving glass fiber reinforced effects is good, but is prone to produce orientation, can produce floating fibre at product surface, with the two composite use, learns from other's strong points to offset one's weaknesses, and has both reached certain reinforced effects, reduces floating fine the generation again.
Preparing method of the present invention can produce the product that surface-brightening does not have floating fibre, anti-comparatively high temps, and its production technique simple controllable is produced easy to operate.
Embodiment
Below in conjunction with embodiment the present invention is done detailed explanation:
Polycarbonate (PC) select molecular weight be 22000-25000 in low adhesive aggregation carbonic ether, the L1225L that Zhejiang Jiaxing Supreme Being people company produces;
Toughner is selected the core-shell copolymerized thing of esters of acrylic acid or ethene-a olefin copolymer, the EXL2691A that following examples select U.S. Rhom and Hass to produce;
Lubricant is home-made modified fat acid acid amides TAF;
Thermo-stabilizer is N, N '-two-(3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionyl group) hexanediamine, and the trade mark of selecting CIBA company to produce is the product of GX2921.
To select length be 2.5～3.5 millimeters to short glass fiber in the spun glass, is specially 2.5,3,3.5, a plurality of specifications such as 2.8mm, and the diameter of roving glass fiber and short glass fiber all is 3～5 microns, generally selects a plurality of specifications such as 3,3.5,4,4.5,5 microns.Roving glass fiber and short glass fiber that following embodiment selects megalith group to produce, the trade mark is respectively 988A and 534.
Embodiment 1; Select 86.2 parts of the raw material of following parts by weight: PC (L1225L), 0.3 part of thermo-stabilizer (GX2921), 3 parts of toughner (EXL2691A) for use; 0.5 part of lubricant (TAF) is middling speed stirrer for mixing 5 minutes, again with 5 parts glass (roving glass fiber 988A contains 3 parts, short glass fiber 534 and contains 2 parts) blending; Through melt temperature is that 200～260 ℃ of twin screw extruders are extruded granulation.Wherein each zone temperatures of twin screw extruder is set at: 200 ℃ in a district, and 240 ℃ in two districts, 255 ℃ in three districts, 260 ℃ in four districts, 245 ℃ in five districts, the residence time was 90 seconds.
Embodiment 2, select 86.1 parts of the raw material of following parts by weight: PC (L1225L) for use, 0.3 part of thermo-stabilizer (GX2921); 3 parts of toughner (EXL2691A); 0.6 part of lubricant (TAF) is middling speed stirrer for mixing 5 minutes, again with 20 parts glass (roving glass fiber 988A contains 10 parts, short glass fiber 534 and contains 10 parts) blending; Through melt temperature is that 200～260 ℃ of twin screw extruders are extruded granulation.Wherein each zone temperatures is: 200 ℃ in a district, and 240 ℃ in two districts, 255 ℃ in three districts, 260 ℃ in four districts, 245 ℃ in five districts, the residence time was 90 seconds.
Embodiment 3, select 85.0 parts of the raw material of following parts by weight: PC (L1225L) for use, 0.3 part of thermo-stabilizer (GX2921); 3 parts of toughner (EXL2691A); 0.7 part of lubricant (TAF) is middling speed stirrer for mixing 5 minutes, again with 6 parts glass (roving glass fiber 988A contains 4 parts, short glass fiber 534 and contains 2 parts) blending; Through melt temperature is that 200--260 ℃ of twin screw extruder extruded granulation.Wherein each zone temperatures is: 200 ℃ in a district, and 240 ℃ in two districts, 255 ℃ in three districts, 260 ℃ in four districts, 245 ℃ in five districts, the residence time was 90 seconds.
Embodiment 4, select 84.9 parts of the raw material of following parts by weight: PC (L1225L) for use, 0.3 part of thermo-stabilizer (GX2921); 3 parts of toughner (EXL2691A); 0.8 part of lubricant (TAF) is middling speed stirrer for mixing 5 minutes, again with 10 parts glass (roving glass fiber 988A contains 7 parts, short glass fiber 534 and contains 3 parts) blending; Through melt temperature is that 200--260 ℃ of twin screw extruder extruded granulation.Wherein each zone temperatures is: 200 ℃ in a district, and 240 ℃ in two districts, 255 ℃ in three districts, 260 ℃ in four districts, 245 ℃ in five districts, the residence time was 90 seconds.
Embodiment 5, select 84.8 parts of the raw material of following parts by weight: PC (L1225L) for use, 0.3 part of thermo-stabilizer (GX2921); 3 parts of toughner (EXL2691A); 0.9 part of lubricant (TAF) is middling speed stirrer for mixing 5 minutes, again with 10 parts glass (roving glass fiber 988A contains 6 parts, short glass fiber 534 and contains 4 parts) blending; Through melt temperature is that 200--260 ℃ of twin screw extruder extruded granulation.Wherein each zone temperatures is: 200 ℃ in a district, and 240 ℃ in two districts, 255 ℃ in three districts, 260 ℃ in four districts, 245 ℃ in five districts, the residence time was 90 seconds.
Embodiment 6, select 84.7 parts of the raw material of following parts by weight: PC (L1225L) for use, 0.3 part of thermo-stabilizer (GX2921); 3 parts of toughner (EXL2691A); 1.0 parts of lubricants (TAF) are middling speed stirrer for mixing 5 minutes, again with 10 parts glass (roving glass fiber 988A contains 5 parts, short glass fiber 534 and contains 5 parts) blending; Through melt temperature is that 200--260 ℃ of twin screw extruder extruded granulation.Wherein each zone temperatures is: 200 ℃ in a district, and 240 ℃ in two districts, 255 ℃ in three districts, 260 ℃ in four districts, 245 ℃ in five districts, the residence time was 90 seconds.
Embodiment 7, select 84.7 parts of the raw material of following parts by weight: PC (L1225L) for use, 0.3 part of thermo-stabilizer (GX2921); 3 parts of toughner (EXL2691A); 1.0 parts of lubricants (TAF) are middling speed stirrer for mixing 5 minutes, again with 10 parts glass (roving glass fiber 988A contains 4 parts, short glass fiber 534 and contains 6 parts) blending; Through melt temperature is that 200--260 ℃ of twin screw extruder extruded granulation.Wherein each zone temperatures is: 200 ℃ in a district, and 240 ℃ in two districts, 255 ℃ in three districts, 260 ℃ in four districts, 245 ℃ in five districts, the residence time was 90 seconds.
Embodiment 8; High gloss special composite material for meter case is 80 parts of the raw material of selecting following parts by weight for use: PC (L1225L); 0.3 part of thermo-stabilizer (GX2921); 3 parts of toughner (EXL2691A), the glass that lubricant (TAF) is 1.0 parts, 10 parts (roving glass fiber 988A contains 4 parts, short glass fiber 534 and contains 6 parts).
The preparation method is with embodiment 1.
Embodiment 9; High gloss special composite material for meter case is 95 parts of the raw material of selecting following parts by weight for use: PC (L1225L); 1.0 parts of thermo-stabilizers (GX2921); 5 parts of toughner (EXL2691A), the glass that lubricant (TAF) is 0.6 part, 15 parts (roving glass fiber 988A contains 10 parts, short glass fiber 534 and contains 5 parts).
The preparation method is with embodiment 1.
Embodiment 10; High gloss special composite material for meter case is 85 parts of the raw material of selecting following parts by weight for use: PC (L1225L); 0.5 part of thermo-stabilizer (GX2921); 3.5 parts of toughner (EXL2691A), the glass that lubricant (TAF) is 0.8 part, 12 parts (roving glass fiber 988A contains 6 parts, short glass fiber 534 and contains 7 parts).
The preparation method is with embodiment 1.
Embodiment 11; High gloss special composite material for meter case is 92 parts of the raw material of selecting following parts by weight for use: PC (L1225L); 0.8 part of thermo-stabilizer (GX2921); 4.5 parts of toughner (EXL2691A), the glass that lubricant (TAF) is 0.9 part, 8 parts (roving glass fiber 988A contains 5 parts, short glass fiber 534 and contains 3 parts).
The preparation method is with embodiment 1.
Performance evaluation mode and implementation standard
Select particle that embodiment 1～7 accomplishes granulation for use in 130～150 ℃ convection oven dry 4～6 hours,, keep the mould temperature in the sample making course between 70～100 ℃ again with the injection moulding sample preparation on the 80T injection moulding machine of exsiccant particle.
1, tensile strength is tested by GB/T 1040 standards.Specimen types is the I type, batten size (mm): 170 (length) * (20 ± 0.2) (end width) * (4 ± 0.2) (thickness), draw speed is 50mm/min.
2, flexural strength and modulus in flexure are tested by GB 9341/T standard.Specimen types is specimen size (mm): (80 ± 2) * (10 ± 0.2) * (4 ± 0.2), rate of bending are 20mm/min.
3, notched Izod impact strength is tested by GB/T 1043 standards.Specimen types is the I type, specimen size (mm): (80 ± 2) * (10 ± 0.2) * (4 ± 0.2); The breach type is a category-A, and the breach residual thickness is 3.2mm.
4, heat-drawn wire is tested by GB/T 1634.2 standards.Load is 100mm for the 1.80MPa. span.
Embodiment 1-7 raw material weight umber and the composite property table of processing
| Form (part) | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 |
| PC | 86.2 | 86.1 | 85.0 | 84.9 | 84.8 | 84.7 | 84.7 |
| Thermo-stabilizer | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Lubricant | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 | 1.0 |
| Toughner | 3 | 3 | 4 | 4 | 4 | 4 | 4 |
| Roving glass fiber 988A | 3 | 12 | 4 | 7 | 6 | 5 | 4 |
| Short glass fiber 534 | 2 | 8 | 2 | 3 | 4 | 5 | 6 |
| Heat-drawn wire | 134 | 134 | 132 | 132 | 132 | 132 | 132 |
| Notched Izod impact strength | 123 | 120 | 132 | 135 | 136 | 146 | 150 |
| Tensile strength | 80.8 | 80.9 | 78.9 | 77.8 | 76.0 | 75.6 | 70 |
| Modulus in flexure | 3200 | 3150 | 3040 | 2950 | 2850 | 2790 | 2600 |
| Surface gloss | Better | Good | Better | Better | Better | Good | Good |
See that from last table increasing thermo-stabilizer, lubricant, toughner, glass among the PC, product has kept higher heat resisting temperature, has stronger shock strength, tensile strength, and surface floating fiber is few, and is highly polished.
Use short glass fiber that the glass of product surface is uniformly dispersed, increased production cost, in actual manufacturing processed, only need to add the demand that 5% short glass fiber can reach the client, so the cost increase seldom.And selected other auxiliary agent raw materials are the commercial goods, need not special methods and prepare or handle, and have reduced production cost, make the product that makes have competitive edge.
Claims (6)
1. a high gloss special composite material for meter case is characterized in that, is processed by the raw material of following parts by weight:
Described spun glass is the compound of roving glass fiber and short glass fiber; Wherein roving glass fiber is the spun glass of thermoplastics with the alkali-free assembled roving; Short glass fiber is the spun glass of thermoplastics with the alkali-free chopped strand; Short glass fiber length is 2.5～3.5 millimeters, and wherein the diameter of roving glass fiber and short glass fiber all is 3～5 microns, and the quality percentage composition of short glass fiber in spun glass is 30%～60%.
2. high gloss special composite material for meter case according to claim 1 is characterized in that, is processed by the raw material of following parts by weight:
3. high gloss special composite material for meter case according to claim 1 is characterized in that, described polycarbonate is middle adhesive aggregation carbonic ether or low adhesive aggregation carbonic ether.
4. high gloss special composite material for meter case according to claim 1 is characterized in that, described toughner is the core-shell copolymerized thing of esters of acrylic acid or ethene-a olefin copolymer.
5. high gloss special composite material for meter case according to claim 1 is characterized in that, described thermo-stabilizer is N, N '-two-(3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionyl group) hexanediamine.
6. high gloss special composite material for meter case according to claim 1 is characterized in that, described lubricant is a fatty acid amide.
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| CN2009101895022A CN101875767B (en) | 2009-11-23 | 2009-11-23 | High gloss special composite material for meter case and preparation method thereof |
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| CN101875767B true CN101875767B (en) | 2012-06-13 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974218B (en) * | 2010-11-12 | 2012-07-11 | 大河宝利材料科技(苏州)有限公司 | Special plastic/acrylonitrile butadiene styrene (PC/ABS) alloy for notebook computer shell |
| CN102702614B (en) * | 2012-04-26 | 2014-04-23 | 长城汽车股份有限公司 | Composite polypropylene automobile door panel module |
| CN105131547B (en) * | 2015-08-28 | 2016-11-09 | 金发科技股份有限公司 | A kind of polycarbonate compositions and preparation method thereof |
| CN105182025B (en) * | 2015-09-08 | 2017-07-11 | 国网山东沂南县供电公司 | Anti-electricity-theft age inhibiting New electricity meter case |
| CN105255131A (en) * | 2015-10-16 | 2016-01-20 | 国网山东莒南县供电公司 | Polymer composite material for electric meter casing |
| CN109206875A (en) * | 2018-07-25 | 2019-01-15 | 天津金发新材料有限公司 | A kind of polycarbonate compositions and preparation method thereof |
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| CN101089046A (en) * | 2007-06-08 | 2007-12-19 | 深圳市科聚新材料有限公司 | Transparent polycarbonate alloy composite material and its prepn process |
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| CN101089046A (en) * | 2007-06-08 | 2007-12-19 | 深圳市科聚新材料有限公司 | Transparent polycarbonate alloy composite material and its prepn process |
| CN101134839A (en) * | 2007-09-30 | 2008-03-05 | 深圳市科聚新材料有限公司 | Flame-proof glass fibre reinforced polycarbonate material and method for making same |
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