CN101538403A - Anti-warp glass fiber reinforced polycarbonate composition with high rigidity and toughness and good appearance - Google Patents
Anti-warp glass fiber reinforced polycarbonate composition with high rigidity and toughness and good appearance Download PDFInfo
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- CN101538403A CN101538403A CN200910038068A CN200910038068A CN101538403A CN 101538403 A CN101538403 A CN 101538403A CN 200910038068 A CN200910038068 A CN 200910038068A CN 200910038068 A CN200910038068 A CN 200910038068A CN 101538403 A CN101538403 A CN 101538403A
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Abstract
The invention discloses an anti-warp glass fiber reinforced polycarbonate composition with high rigidity and toughness and good appearance, which comprises the following components by weight percentage: 30 to 89.5 percent of polycarbonate resin, 5 to 20 percent of copolyester resin, 5 to 40 percent of alkali-free glass fiber and the balance of assistant. The composition has high rigidity and toughness, has effects on obviously improving the warping degree of injection-molded parts and the surface appearance and can be applied to the fields of precision machinery parts, office equipment parts, computer socket connectors, automobile bracket structural members, and the like.
Description
Technical field
The present invention relates to the polymer composite field, relate in particular to a kind of high rigidity and toughness and good appearance anti-warp glass fiber reinforced polycarbonate composition.
Background technology
Glass fiber reinforced polycarbonate material is because its good mechanical characteristics, electrical specification and dimensional stability are widely used in fields such as precision optical machinery component (structural part of various precision instruments such as photographic camera, video recorder and appearance component), office equipment type component (the heat resistant structure spare of printer, duplicating machine, scanner), Computer connector, automobile support structural part.In these Application Areass, need thin-walled injection molding and good outward appearance, to satisfy the requirement of precision component, it is big therefore often to run into the Injection moulded part buckling deformation, and there is " floating fine " phenomenon on the surface.
In existing technology, mainly by regulating the Shooting Technique condition and improving the mould temperature and reduce the buckling deformation degree of moulding and improve appearance.But it is little that this method can be regulated the amplitude of improvement, causes the molding technological condition harshness easily, is unfavorable for actual production, and the shaping cycle that can extend, and causes tooling cost to rise.
The glass fiber-reinforced polycarbonate resin combination is known in for example patent CN03810420.2 and CN01126385.7.The composition of these two patent disclosures mainly biases toward the high tenacity of material, and does not take into account the anti-warpage properties and the good surface outward appearance of material.
Patent CN03113958.2 discloses anti-warpage highly effective flame-retardant reinforced polycarbonate resin of a kind of environmental protection and preparation method thereof.This reinforced polycarbonate resin focuses on the anti-warpage properties and the highly effective flame-retardant of material, and is harsh to the selection of glass, and the difficult control of production technique is not easy to the actual production operation.
A kind of glass fibre enhanced poly carbonate resin composition with appearance of improvement is disclosed among the patent CN94117073.X.The defective of said composition is the toughness deficiency, and anti-warpage properties remains to be improved, particularly high glass fiber content 30～40%, and also harsh to required starting material requirement, be unfavorable for actual production and cost control.
Therefore, a kind of reinforced polycarbonate resin combination of taking into account various aspects of performance and outward appearance simultaneously of exploitation meets the demand in market.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the difficult problem of prior art, and purpose is to provide a kind of anti-buckling deformation and improves various aspects of performance and glass fiber-reinforced polycarbonate composition outward appearance, that easily produce.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of high rigidity and toughness and good appearance anti-warp glass fiber reinforced polycarbonate composition comprises following components in weight percentage: polycarbonate resin 30～89.5%, copolymer polyester resin 5～20%, alkali free glass fibre 5～40%.
Glass fiber-reinforced polycarbonate composition of the present invention also can add conventional auxiliary agent, and the weight percent that auxiliary agent adds is preferably 0.5～10% of gross weight.
Described polycarbonate is the bisphenol A-type aromatic polycarbonate resin, its relative molecular mass M
WBe 12000～40000, preferred 20000～36000 scope, described relative molecular mass M
WBeing to adopt GPC (gel chromatography) to measure, is that standard specimen is proofreaied and correct with the polystyrene, and the polycarbonate resin of different molecular weight can use by combination collocation.
Described copolyester be in terephthalic acid (PTA) or the dimethyl terephthalate (DMT) (DMT) one or both and 1, the multipolymer that one or both copolymerizations in 4-hexanaphthene dimethyl ester (CHDM) or the ethylene glycol (EG) form; Described multipolymer is a poly terephthalic acid 1, the PCT (being called for short PCTG) of 4-hexanaphthene dimethyl ester (being called for short PCT), sour modification PCT (being called for short PCTA), pure modification or the polyethylene terephthalate (PETG) of pure modification, for example U.S. DuPont
TM 
PCT series product and the Z-of Eastman company polyester series product, wherein preferred DuPont
TM 
The PCT series product.
Described alkali free glass fibre is that the chopped glass fiber length-to-diameter ratio is 3～30 through the roving glass fiber and the chopped glass fiber of surface-treated diameter at 6～14 μ m, wherein preferred chopped glass fiber.Surface treatment agent is not limit, and can use epoxy type, polyurethane-type or coupling type surface treatment agent, as silane coupling agent, titanate coupling agent, aluminate coupling agent or their mixture.
Described conventional auxiliary agent is one or more in all kinds of toughner, fire retardant, static inhibitor, oxidation inhibitor, photostabilizer, lubricant, releasing agent, inorganic filling toughener, white mineral oil or the toner (pigment) of public offering on the present market, improving other performances of material, but be prerequisite not damage the above-mentioned characteristic performance of material.
Compared with prior art, the present invention has following beneficial effect:
Compared with prior art, the advantage of reinforced polycarbonate composition of the present invention is to have good rigidity and toughness simultaneously, can remedy the rigidity and the flexible unbalancedness of general reinforced polycarbonate material; In addition, also adopt an amount of copolyester of interpolation to improve the injection moulding flowability of material and the interface compatibility and the adhesive power of glass and base material, the internal stress and the glass fibre that have reduced thin wall parts or complex structure product expose, thereby have obviously improved the warpage and the appearance of product on the material.The present invention is not to there being very strict requirement in the raw-material selection, material therefor is all on sale on market, and it also has no particular limits and requirement production unit and technology, can be by conventional mixing extrusion equipment and explained hereafter.
Embodiment
This part content is represented Comparative Examples 1～5 with A1～A5, and B1～B5 represents embodiment 1～5.
Press each component that table 1 will be except that glass fibre at high-speed mixer and mixing 2-3 minute, then at 230～260 ℃ of following extruding pelletizations, the mode of feeding by side in this process feeds forcing machine in proportion with roving glass fiber or chopped glass fiber.Pelletizing gained pellet is injection molded into the standard bar after drying under 280 ℃ of temperature, mechanical property is according to the ASTM standard testing, and is as shown in table 2.
Buckling deformation degree and outward appearance judge that adopting enterprises to make testing method by oneself carries out:
(1) buckling deformation degree measuring method: under identical Shooting Technique condition,, at room temperature place and measure the dried up planar distance in product long mid-line position behind the 24h with the product of differing materials injection moulding growth 50cm * wide 5cm * thick 2.0cm.The big more buckling deformation degree that shows of distance is high more, otherwise then more little.
(2) elder generation is injection molded into differing materials the flat board of long 8cm * wide 5cm * thick 2.5cm under same processing condition, at first carrying out (a) range estimation passes judgment on: eyes are observed the obvious situation of planar surface glass flow liner, the obvious more outward appearance that then shows of glass line is poor more, and with good, medium, general, differ from four grades and pass judgment on; Adopt (b) adhesive tape adhesion method then: adopt 3M company to produce same model mightiness belt and be attached on dull and stereotyped same position and the surface-area, moment sees whether tape surface is stained with glass after shutting down, if any then writing down tape surface glass radical.
The component of table 1 embodiment and comparative example and proportioning
(annotate: each component sum is 100%)
Table 2 The performance test results
From the performance of above comparative example and embodiment as can be seen, glass fiber-reinforced polycarbonate composition of the present invention has better rigidity and toughness, and anti-simultaneously warpage properties and outward appearance all improve significantly.Therefore, said composition can be widely used in surperficial appearance requirement height and need simultaneously in good rigidity and the flexible thin-walled injection molding part.
Claims (7)
1. high rigidity and toughness and good appearance anti-warp glass fiber reinforced polycarbonate composition, it is characterized in that forming: polycarbonate resin 30～89.5% by following components in weight percentage, copolymer polyester resin 5～20%, alkali free glass fibre 5～40%, surplus is an auxiliary agent.
2. composition as claimed in claim 1 is characterized in that described auxiliary agent comprises one or more in toughner, fire retardant, static inhibitor, oxidation inhibitor, photostabilizer, lubricant, releasing agent, inorganic filling toughener, white mineral oil or the toner.
3. composition according to claim 1 is characterized in that described polycarbonate resin is the bisphenol A-type aromatic polycarbonate resin, and its relative molecular mass is 12000～40000.
4. composition according to claim 1, it is characterized in that described copolyester be in terephthalic acid or the dimethyl terephthalate (DMT) one or both and 1, the multipolymer that one or both copolymerizations in 4-hexanaphthene dimethyl ester or the ethylene glycol form.
5. as composition as described in the claim 4, it is characterized in that described multipolymer is a poly terephthalic acid 1,4-hexanaphthene dimethyl ester, sour modification poly terephthalic acid 1, the poly terephthalic acid 1 of 4-hexanaphthene dimethyl ester, pure modification, the polyethylene terephthalate of 4-hexanaphthene dimethyl ester or pure modification.
6. composition according to claim 1 is characterized in that described alkali free glass fibre is the diameter crossed through surface treatment agent coating processing roving glass fiber or the chopped glass fiber at 6～14 μ m, and described chopped glass fiber length-to-diameter ratio is 3～30.
7. as composition as described in the claim 6, it is characterized in that described surface treatment agent is selected from a kind of or both the above mixtures in silane coupling agent, titanate coupling agent, the aluminate coupling agent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910038068A CN101538403A (en) | 2009-03-20 | 2009-03-20 | Anti-warp glass fiber reinforced polycarbonate composition with high rigidity and toughness and good appearance |
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|---|---|---|---|
| CN200910038068A CN101538403A (en) | 2009-03-20 | 2009-03-20 | Anti-warp glass fiber reinforced polycarbonate composition with high rigidity and toughness and good appearance |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875772A (en) * | 2010-07-14 | 2010-11-03 | 深圳市科聚新材料有限公司 | Glass fiber reinforced PC composite material and preparation method thereof |
| CN102093685A (en) * | 2009-12-12 | 2011-06-15 | 拜尔材料科学股份公司 | Polycarbonate compositions with improved surface hardness |
| CN102558807A (en) * | 2010-12-27 | 2012-07-11 | 重庆工商大学 | Formula of glass fiber reinforced flame-retardant antistatic polycarbonate (PC) plastic for oil treatment |
| CN104072964A (en) * | 2013-03-26 | 2014-10-01 | 上海杰事杰新材料(集团)股份有限公司 | A continuous-glass-fibre-reinforced polycarbonate composite material and a preparing method thereof |
| CN104411124A (en) * | 2014-10-30 | 2015-03-11 | 天津三星通信技术研究有限公司 | Electronic equipment assembly and manufacturing method thereof |
| CN104672847A (en) * | 2013-11-28 | 2015-06-03 | 上海杰事杰新材料(集团)股份有限公司 | Glass fiber reinforced polycarbonate (PC) composite material and preparation method thereof |
| CN104672846A (en) * | 2013-11-28 | 2015-06-03 | 上海杰事杰新材料(集团)股份有限公司 | Glass fiber reinforced polycarbonate (PC) composite material and preparation method thereof |
| CN104693788A (en) * | 2013-12-10 | 2015-06-10 | 合肥杰事杰新材料股份有限公司 | Low-warpage heat-resistant nylon composition and preparation method thereof |
| CN104693767A (en) * | 2014-12-15 | 2015-06-10 | 深圳市富恒新材料股份有限公司 | Glass fiber reinforced PC alloy material and preparation method thereof |
| CN106317827A (en) * | 2016-08-24 | 2017-01-11 | 王鹏 | PC alloy material and preparing method and application thereof |
| CN109370191A (en) * | 2018-09-30 | 2019-02-22 | 句容峰岭科技有限公司 | A kind of polyester alloy and preparation method thereof for auto parts and components |
| CN111484716A (en) * | 2019-09-27 | 2020-08-04 | 四川鑫达企业集团有限公司 | High-melt-index PC composite material for 3D printing and preparation method thereof |
| CN112574544A (en) * | 2019-09-27 | 2021-03-30 | 比亚迪股份有限公司 | Polycarbonate composition, polycarbonate material and housing |
-
2009
- 2009-03-20 CN CN200910038068A patent/CN101538403A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093685A (en) * | 2009-12-12 | 2011-06-15 | 拜尔材料科学股份公司 | Polycarbonate compositions with improved surface hardness |
| CN101875772A (en) * | 2010-07-14 | 2010-11-03 | 深圳市科聚新材料有限公司 | Glass fiber reinforced PC composite material and preparation method thereof |
| CN101875772B (en) * | 2010-07-14 | 2012-01-18 | 深圳市科聚新材料有限公司 | Glass fiber reinforced PC composite material and preparation method thereof |
| CN102558807A (en) * | 2010-12-27 | 2012-07-11 | 重庆工商大学 | Formula of glass fiber reinforced flame-retardant antistatic polycarbonate (PC) plastic for oil treatment |
| CN104072964A (en) * | 2013-03-26 | 2014-10-01 | 上海杰事杰新材料(集团)股份有限公司 | A continuous-glass-fibre-reinforced polycarbonate composite material and a preparing method thereof |
| CN104672847A (en) * | 2013-11-28 | 2015-06-03 | 上海杰事杰新材料(集团)股份有限公司 | Glass fiber reinforced polycarbonate (PC) composite material and preparation method thereof |
| CN104672846A (en) * | 2013-11-28 | 2015-06-03 | 上海杰事杰新材料(集团)股份有限公司 | Glass fiber reinforced polycarbonate (PC) composite material and preparation method thereof |
| CN104693788A (en) * | 2013-12-10 | 2015-06-10 | 合肥杰事杰新材料股份有限公司 | Low-warpage heat-resistant nylon composition and preparation method thereof |
| CN104693788B (en) * | 2013-12-10 | 2018-01-26 | 合肥杰事杰新材料股份有限公司 | A kind of heat-resisting nylon composition of low warpage and preparation method thereof |
| CN104411124A (en) * | 2014-10-30 | 2015-03-11 | 天津三星通信技术研究有限公司 | Electronic equipment assembly and manufacturing method thereof |
| CN104693767A (en) * | 2014-12-15 | 2015-06-10 | 深圳市富恒新材料股份有限公司 | Glass fiber reinforced PC alloy material and preparation method thereof |
| CN106317827A (en) * | 2016-08-24 | 2017-01-11 | 王鹏 | PC alloy material and preparing method and application thereof |
| CN109370191A (en) * | 2018-09-30 | 2019-02-22 | 句容峰岭科技有限公司 | A kind of polyester alloy and preparation method thereof for auto parts and components |
| CN111484716A (en) * | 2019-09-27 | 2020-08-04 | 四川鑫达企业集团有限公司 | High-melt-index PC composite material for 3D printing and preparation method thereof |
| CN112574544A (en) * | 2019-09-27 | 2021-03-30 | 比亚迪股份有限公司 | Polycarbonate composition, polycarbonate material and housing |
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