CN109486148A - A kind of transparent high rigidity scratch-resistant PC/PMMA alloy - Google Patents
A kind of transparent high rigidity scratch-resistant PC/PMMA alloy Download PDFInfo
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- CN109486148A CN109486148A CN201811266852.XA CN201811266852A CN109486148A CN 109486148 A CN109486148 A CN 109486148A CN 201811266852 A CN201811266852 A CN 201811266852A CN 109486148 A CN109486148 A CN 109486148A
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- pmma
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- high rigidity
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The present invention relates to technical field of polymer materials, in particular to a kind of transparent high rigidity scratch-resistant PC/PMMA alloy.PC/PMMA alloy of the present invention mainly uses high viscosity PC, low viscosity PC and PMMA to be mixed to prepare, and limits PMMA weight average molecular weight as 60000-200000, composed of the following components in parts by weight: PC:60-90 parts；PMMA:10-40 parts；Antioxidant: 0.1-0.5 parts；UV stabilizer: 0.1-1.0 parts；Compatilizer: 0.5-2.0 parts, compared to the prior art, the invention has the benefit that being mixed using different viscosities PC with PMMA, PMMA weight average molecular weight is defined, surface hardness modifying agent is added, so that PC/PMMA alloy obtained is had both transparent good and high surface hardness excellent performance, suitable for the equipment such as phone housing, headset accessory, mobile terminal and operation panel of high surface hardness requirement, comprehensive performance is good, easy to spread；There is good weather-proof and stability under the protection of UV stabilizer, so that product is more durable, great market value.
Description
Technical field
The present invention relates to technical field of polymer materials, more particularly to a kind of transparent high rigidity scratch-resistant PC/PMMA to close
Gold.
Background technique
Polycarbonate (Polycarbonate, PC) is a kind of amorphous thermoplastic's engineering plastics of function admirable, colourless
It is transparent, it is heat-resisting, it is fire-retardant, there is impact resistance outstanding, have good mechanical performance in commonly used temperature, but do not change
The deficiency that there are scraping and wiping resistance performances is poor by the PC of property, hardness is low, limits the application of polycarbonate.
The prior art improves the hardness of PC, polymethyl methacrylate using PC to be blended with another rigid polymer
(Polymethylmethacrylate, PMMA), because it is with excellent surface hardness, scraping and wiping resistance performance and transparency, and
Good mechanical property, easy processing molding, is widely used as such rigid polymer.Preparation PC/PMMA is blended with PC and closes by PMMA
Gold can significantly improve the processing performance of PC, improve the scraping and wiping resistance performance of PC.But there are impact resistances and heat-resisting by PMMA itself
The bad defect of performance, there are the big problems that hardness and the transparency are difficult to get both when PC and PMMA are made into alloy.Specific manifestation
For high molecular weight PMMA and PC high-temperature blending when, hardness is good, but the two poor compatibility, and mixing unevenly pearly-lustre easily occurs
Effect causes the PC/PMMA alloy transparency poor；When PMMA and the PC high-temperature blending of low molecular weight, the transparency can be kept, but needle
The field more special to performance requirement, such as the shell and headset accessory of electronic products, mobile terminal or operation panel etc. are all
There is the product of high rigidity scratch-resistant demand to be then not suitable for more.
Chinese patent literature CN201410328787.4 disclose a kind of transparent scratch-resistant PC/PMMA alloy material and its
Preparation method is made of raw material from the following weight: 40-95 parts of polycarbonate, 5-60 parts of polymethyl methacrylate, and antioxygen
0.1-1 parts of agent, 0.1-1 parts of lubricant；PC/PMMA alloy material transparency obtained is high, scratch-resistant, but does not consider the hard of product
Whether degree index can meet being applicable for different field.
Summary of the invention
The purpose of the present invention is aiming at the shortcomings in the prior art, provide a kind of transparent high rigidity scratch-resistant PC/PMMA
Alloy, which is characterized in that be grouped as in parts by weight by below group:
PC:60-90 parts；
PMMA:10-40 parts；
Antioxidant: 0.1-0.5 parts；
UV stabilizer: 0.1-1.0 parts；
Compatilizer: 0.5-2.0 parts.
Preferably, the PMMA weight average molecular weight is 60000-200000, and research finds the PMMA's and PC of high molecular weight
Compatibility is bad, and after addition, pearly-lustre hair mist phenomenon unevenly easily occurs in the two mixing, causes the alloy transparency poor；Low molecular weight
PMMA and PC between have a good compatibility, but molecular weight is too low to cause material hardness insufficient, so PMMA Weight-average molecular
When amount is between 60000-200000, the transparency and the promotion of surface hardness of alloy can be taken into account.
Preferably, the PC includes high viscosity PC(PCIt is high) and low viscosity PC(PCIt is low), high viscosity PC has preferable mechanical
Intensity, impact resistant strength are high, but since PC melt viscosity is high, mobility is poor, and the addition of low viscosity PC can improve most
The mobility of whole material.
It is further preferable that the PCIt is highFor bisphenol A homo object, the p- cumyl phenol of PCP() it blocks, weight average molecular weight is
28000-36000, melt index are 5~10g/10min under 300 DEG C, the test condition of 1.2kg.
It is further preferable that the PCIt is lowFor bisphenol A homo object, the p- cumyl phenol of PCP() it blocks, weight average molecular weight is
17000-23000, melt index are 15~25g/10min under 300 DEG C, the test condition of 1.2kg.
Preferably, melt index of the PMMA under 230 DEG C, 3.8kg test condition is 15-25g/10min.
It is further preferable that the PMMA selects the surface hardness modifying agent METABLEN of holding Co., Ltd., Mitsubishi Chemical
H-880, both ensure that the transparency (in the light transmittance ﹥ 90% that 1mm thickness measures, Haze ﹤ 1.0%) of material, while also be promoted
The surface hardness of material (under 1Kgf test condition, surface hardness reaches 1H or more).
Preferably, the antioxidant is Hinered phenols antioxidant and/or phosphite ester antioxidant.
It is further preferable that the antioxidant is 2,6- three-level butyl -4- methylphenol, bis- (3,5- three-level butyl -4- hydroxyls
Phenyl) thioether, four (β-(3,5- three-level butyl -4- hydroxy phenyl) propionic acid) pentaerythritol esters and thio-2 acid dibasic acid esters one kind
Or it is several.
Preferably, the UV stabilizer is benzophenone UV stabilizer, benzotriazole UV stabilizer and triazines UV
One or more of stabilizer.UV stabilizer can be very good to improve visible light transmittance and weatherability, stablizes PC/PMMA and closes
The performance of gold, improves service life, and material after leaching coating process is handled, stablize by property retention, under 1Kgf test condition, surface
Hardness reaches 4H or more.
Preferably, the PC/PMMA alloy further includes 0.1-0.5 parts of release agent.
Preferably, the transparent high rigidity scratch-resistant PC/PMMA alloy of described one kind is mainly used in phone housing, earphone
In attachment, mobile terminal and operation panel.
Beneficial effect explanation:
1. the PC/PMMA alloy in the present invention uses high viscosity PC, low viscosity PC and PMMA mix and match, and equal to PMMA weight
Molecular weight is defined, and surface hardness modifying agent is added, and PC/PMMA alloy obtained is made to have both transparent good and high surface hardness
Excellent performance, the equipment such as phone housing, headset accessory, mobile terminal and operation panel required suitable for high surface hardness
In, comprehensive performance is good, easy to spread；
2. PC/PMMA alloy of the invention especially has good weather-proof and stability under the protection of UV stabilizer,
So that product is more durable, great market value.
Specific embodiment
In order to which technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Embodiment, comparative example and commercial samples elaborate to specific embodiment provided by the invention.It should be appreciated that this place
The specific embodiment of description is only used to explain the present invention, is not intended to limit the present invention.
Embodiment 1-4
In following example 1-4, each raw material uses following compositions, and detailed component is referring to table 1:
Antioxidant selects 2,6 di tert butyl 4 methyl phenol；
UV stabilizer selects BASF BasfUV-P light stabilizer；
Compatilizer selects SMA maleic anhydride；
Release agent selects epoxy resin release agent；
PCIt is highFor bisphenol A homo object, the p- cumyl phenol of PCP() sealing end, select the melting under 300 DEG C, 1.2kg test condition to refer to
Number is 7g/10min, the polycarbonate that weight average molecular weight is 29600；
PCIt is lowFor bisphenol A homo object, the p- cumyl phenol of PCP() sealing end, select the melting under 300 DEG C, 1.2kg test condition to refer to
Number is 25g/10min, the polycarbonate that weight average molecular weight is 21700；
PMMA selects the surface hardness modifying agent METABLEN H-880 of holding Co., Ltd., Mitsubishi Chemical.
Comparative example 1-2
In comparative example 1-2 once, with embodiment 1-4 institute the difference is that, the PMMA in comparative example 1-2 select 230 DEG C,
Melt index under 3.8kg test condition is 3.3g/10min, the poly-methyl methacrylate of weight average molecular weight more a height of 300000
Ester (PMMAIt is high).
Commercially available sample 1
Commercially available sample 1 is SABIC ER007515.
Commercially available sample 2
Commercially available sample 2 is Iupilon KH3410UR.
Each PC/PMMA alloy material component of table 1
The performance test of PC/PMMA alloy material
Test method:
Referring to ASTM D1238, PC/PMMA alloy material melt index (g/10min) is tested under 300 DEG C, 1.2kg load.
Referring to ASTM D638, PC/PMMA alloy material tensile strength (MPa) is measured under the conditions of 50 mm/min and is broken
Productivity (%).
Referring to ASTM D790, it is strong that the bending of PC/PMMA alloy material is measured under the conditions of 1.3 mm/min, 50 mm spans
Spend (MPa) and bending modulus (MPa).
Referring to ASTM D648, PC/PMMA alloy material is tested under 1.82MPa load, heat distortion temperature (DEG C) occurs.
Referring to ASTM D3363, PC/PMMA alloy material pencil hardness@1Kgf is measured at normal temperature.
Referring to ASTM D1003, PC/PMMA alloy material light transmittance 1mm(% is measured).
Visual observations PC/PMMA alloy material surface state.
PC/PMMA alloy material the performance test results
From each embodiment of table 2, the performance test results of comparative example and commercially available sample: in comparative example 1 and comparative example 2, PCIt is high、PCIt is low
And PMMAIt is highAfter mixing, pencil hardness can achieve HB or more, but surface has pearly-lustre to send out mist phenomenon, and the transparency is poor.Using this
Invention is defined PMMA weight average molecular weight, selects the surface hardness modifying agent METABLEN of holding Co., Ltd., Mitsubishi Chemical
H-880, by it can be seen from embodiment 1-4 suitable molecular weight PMMA and PC mixing after, light transmittance can reach 88% with
On, and pencil hardness majority can reach B or more.It can be obtained by embodiment 1, when PMMA and PC proportion more optimum range, pencil
Hardness can reach 1H, illustrate that the selection of surface hardness modifying agent PMMA has humidification to the pencil strength of PC/PMMA alloy,
The transparency of PC/PMMA alloy can be kept simultaneously, can be suitable for the field of electronic device more demanding to hardness and the transparency,
Such as phone housing, headset accessory, mobile terminal and operation panel.It can be very good to improve after being especially added to UV stabilizer
The weatherability of alloy, retention property stability, the heat distortion temperature of embodiment 1-4 may be up to 100 DEG C, can satisfy Special Ring
Application under border extends product service life, has preferable market popularization value.
Each embodiment of table 2, the performance test results of comparative example and commercially available sample
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is exemplary,
It is not considered as limiting the invention, those skilled in the art are not the case where departing from the principle of the present invention and objective
Under can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (9)
1. a kind of transparent high rigidity scratch-resistant PC/PMMA alloy, which is characterized in that be grouped in parts by weight by below group
At:
PC:60-90 parts；
PMMA:10-40 parts；
Antioxidant: 0.1-0.5 parts；
UV stabilizer: 0.1-1.0 parts；
Compatilizer: 0.5-2.0 parts；
The PMMA weight average molecular weight is 60000-200000；
The PC includes high viscosity PC(PCIt is high) and low viscosity PC(PCIt is low).
2. transparent high rigidity scratch-resistant PC/PMMA alloy as described in claim 1, which is characterized in that the PCIt is highFor bis-phenol
A homopolymer, the p- cumyl phenol of PCP() sealing end, weight average molecular weight 28000-36000, melt index at 300 DEG C, 1.2kg's
It is 5-10g/10min under test condition.
3. transparent high rigidity scratch-resistant PC/PMMA alloy as described in claim 1, which is characterized in that the PCIt is lowFor bis-phenol
A homopolymer, the p- cumyl phenol of PCP() sealing end, weight average molecular weight 17000-23000, melt index at 300 DEG C, 1.2kg's
It is 15-25g/10min under test condition.
4. transparent high rigidity scratch-resistant PC/PMMA alloy as described in claim 1, which is characterized in that the PMMA exists
230 DEG C, the melt index under 3.8kg test condition be 15-25g/10min.
5. transparent high rigidity scratch-resistant PC/PMMA alloy as claimed in claim 4, which is characterized in that the PMMA is selected
The surface hardness modifying agent METABLEN H-880 of holding Co., Ltd., Mitsubishi Chemical.
6. transparent high rigidity scratch-resistant PC/PMMA alloy as described in claim 1, which is characterized in that the antioxidant is
Hinered phenols antioxidant and/or phosphite ester antioxidant.
7. transparent high rigidity scratch-resistant PC/PMMA alloy as described in claim 1, which is characterized in that the UV stabilizer
For one or more of benzophenone UV stabilizer, benzotriazole UV stabilizer and triazines UV stabilizer.
8. a kind of transparent high rigidity scratch-resistant PC/PMMA alloy as described in claim 1, which is characterized in that the PC/
PMMA alloy further includes 0.1-0.5 parts of release agent.
9. as the described in any item transparent high rigidity scratch-resistant PC/PMMA alloys of claim 1-8 are attached in phone housing, earphone
Application in part, mobile terminal and operation panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811266852.XA CN109486148A (en) | 2018-10-29 | 2018-10-29 | A kind of transparent high rigidity scratch-resistant PC/PMMA alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811266852.XA CN109486148A (en) | 2018-10-29 | 2018-10-29 | A kind of transparent high rigidity scratch-resistant PC/PMMA alloy |
Publications (1)
| Publication Number | Publication Date |
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| CN109486148A true CN109486148A (en) | 2019-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811266852.XA Pending CN109486148A (en) | 2018-10-29 | 2018-10-29 | A kind of transparent high rigidity scratch-resistant PC/PMMA alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109825058A (en) * | 2019-03-27 | 2019-05-31 | 深圳三羊塑胶五金有限公司 | A kind of mobile terminal rear cover and its manufacturing method |
| CN111808410A (en) * | 2020-06-29 | 2020-10-23 | 山东国瓷功能材料股份有限公司 | PC/PMMA composite material, preparation method thereof and electronic terminal shell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086969A (en) * | 2014-07-11 | 2014-10-08 | 上海锦湖日丽塑料有限公司 | Transparent scratch-resistant PC/PMMA (Poly Carbonate/Polymethyl Methacrylate) alloy material and preparation method thereof |
| CN105623230A (en) * | 2014-11-24 | 2016-06-01 | 乐天化学株式会社 | Polycarbonate resin composition with improved compatibility having good scratch resistance and transparency and product thereof |
| CN105860487A (en) * | 2016-06-13 | 2016-08-17 | 上海锦湖日丽塑料有限公司 | Transparent scratch-resistant PC resin composition and preparation method thereof |
-
2018
- 2018-10-29 CN CN201811266852.XA patent/CN109486148A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086969A (en) * | 2014-07-11 | 2014-10-08 | 上海锦湖日丽塑料有限公司 | Transparent scratch-resistant PC/PMMA (Poly Carbonate/Polymethyl Methacrylate) alloy material and preparation method thereof |
| CN105623230A (en) * | 2014-11-24 | 2016-06-01 | 乐天化学株式会社 | Polycarbonate resin composition with improved compatibility having good scratch resistance and transparency and product thereof |
| CN105860487A (en) * | 2016-06-13 | 2016-08-17 | 上海锦湖日丽塑料有限公司 | Transparent scratch-resistant PC resin composition and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109825058A (en) * | 2019-03-27 | 2019-05-31 | 深圳三羊塑胶五金有限公司 | A kind of mobile terminal rear cover and its manufacturing method |
| CN111808410A (en) * | 2020-06-29 | 2020-10-23 | 山东国瓷功能材料股份有限公司 | PC/PMMA composite material, preparation method thereof and electronic terminal shell |
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Application publication date: 20190319 |