CN106854353A - A kind of polycarbonate compositions of friction resistant noise and preparation method thereof - Google Patents
A kind of polycarbonate compositions of friction resistant noise and preparation method thereof Download PDFInfo
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- CN106854353A CN106854353A CN201611239161.1A CN201611239161A CN106854353A CN 106854353 A CN106854353 A CN 106854353A CN 201611239161 A CN201611239161 A CN 201611239161A CN 106854353 A CN106854353 A CN 106854353A
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- friction resistant
- polycarbonate compositions
- resistant noise
- polyacrylic acid
- block copolymer
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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Abstract
The present invention relates to a kind of polycarbonate compositions of friction resistant noise and preparation method thereof, including following components and weight portion：Polycarbonate resin 50~75, the block copolymer 25~40 of polystyrene polyacrylic acid, hindered phenol 1~5, lubricant 0.1~1, add raw materials into and mixed in mixing and blending machine, then be blended by double screw extruder and granulate, the polycarbonate compositions of friction resistant noise are obtained.Compared with prior art, the block copolymer PS b PAA of polystyrene polyacrylic acid provided by the present invention form a large amount of hydrogen bonds with hindered phenol, and brittleness is reduced while material property is ensured, improve the friction resistant noise immune of material；Blending compatible period is extended by the big extruder of draw ratio, PC and PS b PAA occur ester exchange and obtain compatible well, while PAA produces the time of hydrogen bond more with hindered phenol, obtain the polycarbonate compositions of friction resistant noise.
Description
Technical field
The present invention relates to polymeric material field, a kind of polycarbonate compositions more particularly, to friction resistant noise and its
Preparation method.
Background technology
Polycarbonate resin has excellent impact resistance, heat resistance and the transparency, and temperature in use scope 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 of many, the performance to material proposes requirement higher, wherein one is exactly to improve in automobile or electric equipment products
It is middle as sliding component and the frictional behavior of mechanical component, friction noise that reduction is caused due to slip etc..
It is usually in the prior art to add liquid or semisolid lubricant, such as grease in assembling, such result is
Makrolon is easily caused because grease corrosion causes stress cracking, also other method is by adding PTFE etc. in resin
The low material of coefficient of friction, reduces coefficient of friction, and the defect of this method is additive bad with the compatibility of material, is easily caused
Physical property declines.
Chinese patent CN106065132A discloses a kind of composite polystyrene capacitor material, by the original of following weight portion
Material is made：Polystyrene 15-35 parts, polypropylene 5-12 parts, polyester 5-9 parts, makrolon 6-14 parts, aluminium chloride 5-10 parts, four
7-13 parts of chlorination carbon, polyisobutene 2-7 parts, bibenzene tetracarboxylic dianhydride 6-13 parts, p-phenylenediamine 3-9 parts, silica 3-7 parts,
Manganese dioxide 2-6 parts, heat stabilizer 3-7 parts, organic bond 3-9 parts, denaturant 2-6 parts.But the composite is mainly carried
High capacitance performance, can not reduce coefficient of friction and reduce noise.
The content of the invention
The purpose of the present invention is exactly to provide a kind of to make the brittleness of material for the defect for overcoming above-mentioned prior art to exist
Reduce, improve polycarbonate compositions of friction resistant noise of anti-acoustic capability and preparation method thereof.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of polycarbonate compositions of friction resistant noise, including following weight portion component：
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 described polystyrene polyacrylic acid.
In the block copolymer of described polystyrene polyacrylic acid the 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 too high to be caused and poly- carbonic acid
Ester compatibility is bad, and molecular weight is too low, it is impossible to form enough hydrogen bonds.
The weight average molecular weight of described makrolon is 30000-42000.
Described hindered phenol be selected from (3- tertiary butyl-4-hydroxy -5- aminomethyl phenyls) propionic ester of triethylene glycol ether-two or β -
(3,5- di-tert-butyl-hydroxy phenyls) propionic acid octadecanol ester one or two.The structure of this hindered phenol is held with acrylic acid
Easily form hydrogen bond.
Described lubricant is selected from one or more in silicone powder, pentaerythritol ester or ethylene bis stearic amide.
The preparation method of the polycarbonate compositions of friction resistant noise, using following steps：
A () is mixed during raw material is added into mixing and blending machine by formula；
B by double screw extruder be blended gained mixture and granulated by (), the polycarbonate composition of friction resistant noise is obtained
Thing.
A diameter of 58mm of described double screw extruder, draw ratio is 60, and extrusion temperature is controlled to 250~300 DEG C, pressure
Power is 2~3MPa.
Brittleness is an index for characterizing toughness of material, and it is relevant that it piles up mode with material molecule amount.Reducing brittleness can make
Material obtains many favourable performances, such as low creep, scratch resistance and noise reduction.The effect of hydrogen bond is introduced in intramolecular, can be made
Obtain Tg constant, brittleness reduction.The ester group of PS-b-PAA can form hydrogen bond with the hydroxyl of hindered phenol, such that it is able to make the brittleness of material
Reduce, improve anti-acoustic capability.
Compared with prior art, the block copolymer PS-b-PAA of polystyrene polyacrylic acid is added in raw material of the present invention
A large amount of hydrogen bonds are formed with hindered phenol, brittleness is reduced while material property is ensured, improve the friction resistant noise energy of material
Power；Blending compatible period is extended by the big extruder of draw ratio, PC and PS-b-PAA occurs ester exchange and obtains good phase
Hold, while PAA produces the time of hydrogen bond more with hindered phenol, obtain the polycarbonate compositions of friction resistant noise.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the ordinary skill of this area
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 domain.
The PC weight average molecular weight selected in following examples and comparative example is 42, the content of PPA in 000, PS-b-PAA1
PAA contents are 70%, the hindered phenol (3- tertiary butyl-4-hydroxy -5- methylbenzenes of triethylene glycol ether-two in 20%, PS-b-PAA2
Base) propionic ester, lubricant is exactly commercially available PETS.
Comparative example 1
A kind of polycarbonate compositions of friction resistant noise and preparation method thereof, the method is comprised 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) mixed in raw material being added into mixing and blending machine；The melting extrusion at 250~300 DEG C, granulation is obtained
Product.
(3) a diameter of 58mm of extruder screw, draw ratio is 40.
Comparative example 2
A kind of polycarbonate compositions of friction resistant noise and preparation method thereof, the method is comprised the following steps：
(1) each component is weighed by weight：PC：95, hindered phenol：5, lubricant PETS 0.3.
(2) mixed in raw material being added into mixing and blending machine；The melting extrusion at 250~300 DEG C, granulation is obtained
Product.
(3) a diameter of 58mm of extruder screw, draw ratio is 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) mixed in raw material being added into mixing and blending machine；The melting extrusion at 250~300 DEG C, granulation is obtained
Product.
(3) a diameter of 58mm of extruder screw, draw ratio is 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) mixed in raw material being added into mixing and blending machine；The melting extrusion at 250~300 DEG C, granulation is obtained
Product.
(3) a diameter of 58mm of extruder screw, draw ratio is 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) mixed in raw material being added into mixing and blending machine；The melting extrusion at 250~300 DEG C, granulation is obtained
Product.
(3) a diameter of 58mm of extruder screw, draw ratio is 60.
Manufactured size is two types model after each comparative example and embodiment injection, and test piece 1 is 200mm × 150mm × 2mm
Flat board, test piece 2 is that have prominent muscle structural slab on the flat board of 200mm × 150mm × 2mm, apply meet 800g or
Moved back and forth while 1500g, whether investigation now produces squeak.
OO：In load 800g and 1500g squeak is not produced under either condition
O：Load 800g does not produce squeak, load 1500g to produce slight squeak
●：Small squeak is all produced in load 800g and 1500g
╳：Obvious squeak is all produced in load 800g and 1500g
Notch impact strength is tested according to ASTM D256 standards, and breach type is A classes, and batten thickness is 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 forms a large amount of hydrogen bonds with hindered phenol, is reduced while material property is ensured crisp
Degree, improves the friction resistant noise immune of material；Blending compatible period, PC and PS- are extended by the big extruder of draw ratio
There is ester exchange and obtain compatible well in b-PAA, while PAA produces the time of hydrogen bond more with hindered phenol, obtain friction resistant
The polycarbonate compositions of noise.
Embodiment 4
A kind of polycarbonate compositions of friction resistant noise, including following weight portion component：Polycarbonate resin 50, gathers
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 too high to be caused and poly- carbon
Acid esters compatibility is bad, and molecular weight is too low, it is impossible to form enough hydrogen bonds.The weight average molecular weight of makrolon is 30000.Receive
Resistance phenol is triethylene glycol ether-two (3- tertiary butyl-4-hydroxy -5- aminomethyl phenyls) propionic ester, and lubricant is pentaerythritol ester.
The preparation method of the polycarbonate compositions of friction resistant noise, using following steps：
A () is mixed during raw material is added into mixing and blending machine by formula；
B by double screw extruder be blended gained mixture and granulated by (), control a diameter of 58mm of double screw extruder,
Draw ratio is 60, and extrusion temperature is controlled to 250 DEG C, and pressure is 2MPa, and the polycarbonate compositions of friction resistant noise are obtained.
Embodiment 5
A kind of polycarbonate compositions of friction resistant noise, including following weight portion component：Polycarbonate resin 75, gathers
The block copolymer 25 of styrene polyacrylic acid, hindered phenol 5, lubricant 1.Gather in the block copolymer of polystyrene polyacrylic acid
Acrylic acid mass fraction 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 too high can cause it is compatible with makrolon
Property is bad, and molecular weight is too low, it is impossible to form enough hydrogen bonds.The weight average molecular weight of makrolon is 42000.Hindered phenol is three
(3- tertiary butyl-4-hydroxy -5- aminomethyl phenyls) propionic ester of glycol ether-two and β-(3,5- di-tert-butyl-hydroxy phenyls) third
The mixture of sour octadecanol ester, lubricant is the mixture of pentaerythritol ester and ethylene bis stearic amide.
The preparation method of the polycarbonate compositions of friction resistant noise, using following steps：
A () is mixed during raw material is added into mixing and blending machine by formula；
B by double screw extruder be blended gained mixture and granulated by (), control a diameter of 58mm of double screw extruder,
Draw ratio is 60, and extrusion temperature is controlled to 300 DEG C, and pressure is 3MPa, and the polycarbonate compositions of friction resistant noise are obtained.
Specific embodiment of the invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can within the scope of the claims make various deformations or amendments, this not shadow
Sound substance of the invention.
Claims (8)
1. a kind of polycarbonate compositions of friction resistant noise, it is characterised in that said composition includes the component of following weight portion：
Polycarbonate resin 50~75, the block copolymer 25-40 of polystyrene polyacrylic acid, hindered phenol 1~5, lubricant 0.1
~1.
2. a kind of polycarbonate compositions of friction resistant noise according to claim 1, it is characterised in that described polyphenyl
The mass fraction of polyacrylic acid is 60-80% in the block copolymer of ethylene polypropylene acid.
3. a kind of polycarbonate compositions of friction resistant noise according to claim 1, it is characterised in that described polyphenyl
The weight average molecular weight of polyacrylic acid is 10000~18000 in the block copolymer of ethylene polypropylene acid, and polystyrene is again divided equally
Son amount is 10000~40000.
4. a kind of polycarbonate compositions of friction resistant noise according to claim 1, it is characterised in that described poly- carbon
The weight average molecular weight of acid esters is 30000-42000.
5. polycarbonate compositions of a kind of friction resistant noise according to claim 1, it is characterised in that described is obstructed
Phenol is selected from (3- tertiary butyl-4-hydroxy -5- aminomethyl phenyls) propionic ester of triethylene glycol ether-two or β-(3,5- di-t-butyl -4- hydroxyls
Phenyl) propionic acid octadecanol ester one or two.
6. a kind of polycarbonate compositions of friction resistant noise according to claim 1, it is characterised in that described lubrication
Agent is selected from one or more in silicone powder, pentaerythritol ester or ethylene bis stearic amide.
7. the preparation method of the polycarbonate compositions of friction resistant noise as claimed in claim 1, it is characterised in that the method
Using following steps：
A () is mixed during raw material is added into mixing and blending machine by formula；
B by double screw extruder be blended gained mixture and granulated by (), the polycarbonate compositions of friction resistant noise are obtained.
8. a kind of polycarbonate compositions of friction resistant noise according to claim 7, it is characterised in that described double spiral shells
A diameter of 58mm of bar extruder, draw ratio is 60, and extrusion temperature is controlled to 250~300 DEG C, and pressure is 2~3MPa.
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| CN201611239161.1A CN106854353B (en) | 2016-12-28 | 2016-12-28 | A kind of polycarbonate compositions and preparation method thereof of anti-friction noise |
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| CN106854353B CN106854353B (en) | 2019-03-08 |
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Cited By (3)
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| CN111073154A (en) * | 2019-12-13 | 2020-04-28 | 青岛海尔新材料研发有限公司 | 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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111073154A (en) * | 2019-12-13 | 2020-04-28 | 青岛海尔新材料研发有限公司 | Resin composite material with abnormal sound prevention function and preparation method thereof |
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| 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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| CN106854353B (en) | 2019-03-08 |
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