CN106854353B - A kind of polycarbonate compositions and preparation method thereof of anti-friction noise - Google Patents
A kind of polycarbonate compositions and preparation method thereof of anti-friction noise Download PDFInfo
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- CN106854353B CN106854353B CN201611239161.1A CN201611239161A CN106854353B CN 106854353 B CN106854353 B CN 106854353B CN 201611239161 A CN201611239161 A CN 201611239161A CN 106854353 B CN106854353 B CN 106854353B
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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Abstract
The present invention relates to a kind of polycarbonate compositions and preparation method thereof of anti-friction noise, including following components and parts by weight: polycarbonate resin 50~75, the block copolymer 25~40 of polystyrene polyacrylic acid, hindered phenol 1~5, lubricant 0.1~1, it adds raw materials into mixing and blending machine and is mixed, then be blended and be granulated by double screw extruder, the polycarbonate compositions of anti-friction noise are made.Compared with prior art, the block copolymer PS-b-PAA of polystyrene polyacrylic acid provided by the present invention and hindered phenol form a large amount of hydrogen bonds, reduce brittleness while guaranteeing material property, improve the anti-friction noise immune of material；Blending compatible period is extended by the big extruder of draw ratio, PC and PS-b-PAA generation transesterification acquisition is compatible well, while the time of PAA and hindered phenol generation hydrogen bond is more, obtains the polycarbonate compositions of anti-friction noise.
Description
Technical field
The present invention relates to polymeric material fields, a kind of polycarbonate compositions more particularly, to anti-friction noise and its
Preparation method.
Background technique
Polycarbonate resin has excellent impact resistance, heat resistance and the transparency, and use temperature range is wide, and size is steady
Qualitative height, creep resistant is good, is widely used in the fields such as automobile, electronic apparatus, glass lens and medical apparatus.Increasingly
In the case where more, to the performance of material, more stringent requirements are proposed, wherein one is exactly improvement in automobile or electric equipment products
The middle frictional behavior as sliding component and mechanical component, reduce as sliding and caused by friction noise etc..
In the prior art be usually that liquid or semisolid lubricant are added in assembly, such as grease, it is such the result is that
It easily causes polycarbonate since grease corrosion leads to stress cracking, is by adding PTFE etc. in resin there are also other methods
The low substance of coefficient of friction reduces coefficient of friction, and the defect of this method is that the compatibility of additive and material is bad, easily causes
Physical property decline.
Chinese patent CN106065132A discloses a kind of composite polystyrene capacitor material, by the original of following parts by weight
Material is made: 15-35 parts of polystyrene, 5-12 parts of polypropylene, 5-9 parts of polyester, 6-14 parts of polycarbonate, 5-10 parts of aluminium chloride, four
7-13 parts of chlorination carbon, 2-7 parts of polyisobutene, 6-13 parts of bibenzene tetracarboxylic dianhydride, 3-9 parts of p-phenylenediamine, 3-7 parts of silica,
2-6 parts of manganese dioxide, 3-7 parts of heat stabilizer, 3-9 parts of organic bond, 2-6 parts of denaturant.But the composite material mainly mentions
High capacitance performance can not reduce coefficient of friction and reduce noise.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of brittleness for making material
It reduces, improves the polycarbonate compositions and preparation method thereof of the anti-friction noise of anti-acoustic capability.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of polycarbonate compositions of anti-friction noise, comprise the following components in parts by weight:
Polycarbonate resin 50~75, the block copolymer 25-40 of polystyrene polyacrylic acid, hindered phenol 1~5, lubrication
Agent 0.1~1.
The mass fraction of polyacrylic acid is 60-80% in the block copolymer of the polystyrene polyacrylic acid.
In the block copolymer of the polystyrene polyacrylic acid weight average molecular weight of polyacrylic acid be 10000~
18000, the weight average molecular weight of polystyrene is 10000~40000, and the molecular weight of two kinds of polymer is excessively high to be will lead to and poly- carbonic acid
Ester compatibility is bad, and molecular weight is too low, can not form enough hydrogen bonds.
The weight average molecular weight of the polycarbonate is 30000-42000.
The hindered phenol is selected from (3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) propionic ester of triethylene glycol ether-two or β -
The one or two of (3,5- di-tert-butyl-hydroxy phenyl) propionic acid octadecanol ester.The structure and acrylic acid of this hindered phenol are held
Easily form hydrogen bond.
The lubricant is selected from one or more of silicone powder, pentaerythritol ester or ethylene bis stearic amide.
The preparation method of the polycarbonate compositions of anti-friction noise, using following steps:
(a) raw material is added in mixing and blending machine by formula and is mixed；
(b) gained mixture is blended by double screw extruder and is granulated, the polycarbonate composition of anti-friction noise is made
Object.
The diameter of the double screw extruder is 58mm, and draw ratio 60, extrusion temperature control is 250~300 DEG C, pressure
Power is 2~3MPa.
Brittleness is to characterize an index of toughness of material, and it is related that it with material molecule amount piles up mode.Reducing brittleness can make
Material obtains many advantageous performances, such as low creep, scratch resistance and noise reduction.The effect for introducing hydrogen bond in the molecule, can make
It is constant to obtain Tg, brittleness reduces.The ester group of PS-b-PAA and the hydroxyl of hindered phenol will form hydrogen bond, so as to so that material brittleness
It reduces, improves anti-acoustic capability.
Compared with prior art, it joined the block copolymer PS-b-PAA of polystyrene polyacrylic acid in raw material of the present invention
A large amount of hydrogen bonds are formed with hindered phenol, reduce brittleness while guaranteeing material property, improve the anti-friction noise energy of material
Power；Blending compatible period is extended by the big extruder of draw ratio, PC and PS-b-PAA occurs transesterification and obtains good phase
Hold, while the time of PAA and hindered phenol generation hydrogen bond are more, obtain the polycarbonate compositions of anti-friction noise.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
The PC weight average molecular weight selected in following embodiment and comparative example is the content of PPA in 42,000, PS-b-PAA1
PAA content is 70% in 20%, PS-b-PAA2, the hindered phenol (3- tertiary butyl-4-hydroxy -5- methylbenzene of triethylene glycol ether-two
Base) propionic ester, lubricant is just commercially available PETS.
Comparative example 1
A kind of polycarbonate compositions and preparation method thereof of anti-friction noise, method includes the following steps:
(1) each component is weighed by weight: PC:75, PS-b-PAA 1:25, hindered phenol: 5, lubricant PETS 0.3.
(2) raw material are added in mixing and blending machine and are mixed；The melting extrusion at 250~300 DEG C is granulated and obtains
Product.
(3) extruder screw diameter is 58mm, draw ratio 40.
Comparative example 2
A kind of polycarbonate compositions and preparation method thereof of anti-friction noise, method includes the following steps:
(1) each component is weighed by weight: PC:95, hindered phenol: 5, lubricant PETS 0.3.
(2) raw material are added in mixing and blending machine and are mixed；The melting extrusion at 250~300 DEG C is granulated and obtains
Product.
(3) extruder screw diameter is 58mm, draw ratio 60.
Embodiment 1
(1) each component is weighed by weight: PC:74, PS-b-PAA 2:25, hindered phenol: 1, lubricant PETS 0.3.
(2) raw material are added in mixing and blending machine and are mixed；The melting extrusion at 250~300 DEG C is granulated and obtains
Product.
(3) extruder screw diameter is 58mm, draw ratio 60.
Embodiment 2
(1) each component is weighed by weight: PC:50, PS-b-PAA 2:40, hindered phenol: 5, lubricant PETS 0.5.
(2) raw material are added in mixing and blending machine and are mixed；The melting extrusion at 250~300 DEG C is granulated and obtains
Product.
(3) extruder screw diameter is 58mm, draw ratio 60.
Embodiment 3
(1) each component is weighed by weight: PC:60, PS-b-PAA 2:37, hindered phenol: 3, lubricant PETS 0.3.
(2) raw material are added in mixing and blending machine and are mixed；The melting extrusion at 250~300 DEG C is granulated and obtains
Product.
(3) extruder screw diameter is 58mm, draw ratio 60.
Manufactured size is two types template after each comparative example and embodiment injection molding, and test piece 1 is 200mm × 150mm × 2mm
Plate, test piece 2 is that have muscle structural slab outstanding on 200mm × 150mm × 2mm plate, application meet 800g or
It moves back and forth while 1500g, investigates whether generate squeak at this time.
OO: squeak is not generated under either condition in load 800g and 1500g
O: load 800g does not generate squeak, and load 1500g generates slight squeak
●: small squeak is all generated in load 800g and 1500g
╳: apparent squeak is all generated in load 800g and 1500g
Notch impact strength is tested according to ASTM D256 standard, and notch type is A class, and batten is with a thickness of 1/8 "；
| Comparative example 1 | Comparative example 2 | Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| Anti-acoustic capability | ╳ | ╳ | ● | OO | O |
| Notch impact strength J/m | 320 | 410 | 510 | 730 | 680 |
As shown in Table 1, PS-b-PAA and hindered phenol form a large amount of hydrogen bonds, reduce while guaranteeing material property crisp
Degree, improves the anti-friction noise immune of material；Blending compatible period, PC and PS- are extended by the big extruder of draw ratio
B-PAA generation transesterification acquisition is compatible well, while the time of PAA and hindered phenol generation hydrogen bond is more, obtains anti-friction
The polycarbonate compositions of noise.
Embodiment 4
A kind of polycarbonate compositions of anti-friction noise, comprise the following components in parts by weight: polycarbonate resin 50, gather
The block copolymer 40 of styrene polyacrylic acid, hindered phenol 1, lubricant 0.1, wherein polystyrene polyacrylic acid block
The mass fraction of polyacrylic acid is 60% in copolymer, and the weight of polyacrylic acid is equal in the block copolymer of polystyrene polyacrylic acid
Molecular weight is 10000, and the weight average molecular weight of polystyrene is 10000, and the molecular weight of two kinds of polymer is excessively high to be will lead to and poly- carbon
Acid esters compatibility is bad, and molecular weight is too low, can not form enough hydrogen bonds.The weight average molecular weight of polycarbonate is 30000.By
Resistance phenol is triethylene glycol ether-two (3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) propionic ester, and lubricant is pentaerythritol ester.
The preparation method of the polycarbonate compositions of anti-friction noise, using following steps:
(a) raw material is added in mixing and blending machine by formula and is mixed；
(b) gained mixture being blended by double screw extruder and is granulated, the diameter for controlling double screw extruder is 58mm,
Draw ratio is 60, and extrusion temperature control is 250 DEG C, and the polycarbonate compositions of anti-friction noise are made in pressure 2MPa.
Embodiment 5
A kind of polycarbonate compositions of anti-friction noise, comprise the following components in parts by weight: polycarbonate resin 75, gather
The block copolymer 25 of styrene polyacrylic acid, hindered phenol 5, lubricant 1.Gather in the block copolymer of polystyrene polyacrylic acid
The mass fraction of acrylic acid is 80%.The weight average molecular weight of polyacrylic acid is in the block copolymer of polystyrene polyacrylic acid
18000, the weight average molecular weight of polystyrene is 40000, the molecular weight of two kinds of polymer is excessively high will lead to it is compatible with polycarbonate
Property is bad, and molecular weight is too low, can not form enough hydrogen bonds.The weight average molecular weight of polycarbonate is 42000.Hindered phenol is three
(3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) propionic ester of glycol ether-two and β-(3,5- di-tert-butyl-hydroxy phenyl) third
The mixture of sour octadecanol ester, lubricant are the mixture of pentaerythritol ester and ethylene bis stearic amide.
The preparation method of the polycarbonate compositions of anti-friction noise, using following steps:
(a) raw material is added in mixing and blending machine by formula and is mixed；
(b) gained mixture being blended by double screw extruder and is granulated, the diameter for controlling double screw extruder is 58mm,
Draw ratio is 60, and extrusion temperature control is 300 DEG C, and the polycarbonate compositions of anti-friction noise are made in pressure 3MPa.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (7)
1. a kind of polycarbonate compositions of anti-friction noise, which is characterized in that the composition comprises the following components in parts by weight:
Polycarbonate resin 50~75, the block copolymer 25-40 of polystyrene polyacrylic acid, hindered phenol 1~5, lubricant 0.1
~1, the mass fraction of polyacrylic acid is 60-80% in the block copolymer of the polystyrene polyacrylic acid.
2. a kind of polycarbonate compositions of anti-friction noise according to claim 1, which is characterized in that the polyphenyl
The weight average molecular weight of polyacrylic acid is 10000~18000 in the block copolymer of ethylene polypropylene acid, and polystyrene is divided equally again
Son amount is 10000~40000.
3. a kind of polycarbonate compositions of anti-friction noise according to claim 1, which is characterized in that the poly- carbon
The weight average molecular weight of acid esters is 30000-42000.
4. a kind of polycarbonate compositions of anti-friction noise according to claim 1, which is characterized in that described is obstructed
Phenol is selected from (3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) propionic ester of triethylene glycol ether-two or β-(3,5- di-t-butyl -4- hydroxyl
Phenyl) propionic acid octadecanol ester one or two.
5. a kind of polycarbonate compositions of anti-friction noise according to claim 1, which is characterized in that the lubrication
Agent is selected from one or more of silicone powder, pentaerythritol ester or ethylene bis stearamide.
6. the preparation method of the polycarbonate compositions of anti-friction noise as described in claim 1, which is characterized in that this method
Using following steps:
(a) raw material is added in mixing and blending machine by formula and is mixed；
(b) gained mixture is blended by double screw extruder and is granulated, the polycarbonate compositions of anti-friction noise are made.
7. a kind of preparation method of the polycarbonate compositions of anti-friction noise according to claim 6, which is characterized in that
The diameter of the double screw extruder be 58mm, draw ratio 60, extrusion temperature control be 250~300 DEG C, pressure be 2~
3MPa。
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| CN111073154B (en) * | 2019-12-13 | 2022-07-15 | 青岛海纳新材料有限公司 | Resin composite material with abnormal sound prevention function and preparation method thereof |
| CN115260847A (en) * | 2022-07-21 | 2022-11-01 | 南京工业大学 | Transparent sound-proof heat-insulation coating and preparation method thereof |
| WO2024070340A1 (en) * | 2022-09-27 | 2024-04-04 | 帝人株式会社 | Resin composition and molded article of same |
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| US4544706A (en) * | 1982-12-02 | 1985-10-01 | The Dow Chemical Company | Highly impact resistant carbonate polymer blends |
| CN104693719A (en) * | 2013-12-04 | 2015-06-10 | 青岛佳亿阳工贸有限公司 | High-strength high-resistance high-toughness modified PC/PET composite material |
| CN104830043A (en) * | 2015-05-25 | 2015-08-12 | 上海跃贝塑化科技有限公司 | Antistatic PC/ASA (polycarbonate/acrylonitrile styrene acrylate copolymer) alloy plastic for automotive interior trim parts and method for manufacturing antistatic PC/ASA alloy plastic |
| CN106065171A (en) * | 2016-08-19 | 2016-11-02 | 广东锦湖日丽高分子材料有限公司 | A kind of high durable PC ASA alloy material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010009116A (en) * | 2008-06-24 | 2010-01-14 | Sumitomo Dow Ltd | Key top for portable information terminal excellent in keying resisting strength and transparency |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4544706A (en) * | 1982-12-02 | 1985-10-01 | The Dow Chemical Company | Highly impact resistant carbonate polymer blends |
| CN104693719A (en) * | 2013-12-04 | 2015-06-10 | 青岛佳亿阳工贸有限公司 | High-strength high-resistance high-toughness modified PC/PET composite material |
| CN104830043A (en) * | 2015-05-25 | 2015-08-12 | 上海跃贝塑化科技有限公司 | Antistatic PC/ASA (polycarbonate/acrylonitrile styrene acrylate copolymer) alloy plastic for automotive interior trim parts and method for manufacturing antistatic PC/ASA alloy plastic |
| CN106065171A (en) * | 2016-08-19 | 2016-11-02 | 广东锦湖日丽高分子材料有限公司 | A kind of high durable PC ASA alloy material and preparation method thereof |
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