CN107652653A - It is a kind of can laser welding modified plastics and preparation method thereof - Google Patents
It is a kind of can laser welding modified plastics and preparation method thereof Download PDFInfo
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- CN107652653A CN107652653A CN201711005774.3A CN201711005774A CN107652653A CN 107652653 A CN107652653 A CN 107652653A CN 201711005774 A CN201711005774 A CN 201711005774A CN 107652653 A CN107652653 A CN 107652653A
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- C08K5/00—Use of organic ingredients
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- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
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Abstract
The present invention provide it is a kind of can laser welding modified plastics, the modified plastics is to add a germline black toner in the base material that can pass through to laser to be prepared, the mass percent that system's black toner accounts for the modified plastics is 0.05~5%, and modified plastics laser under 800~1100nm can pass through.Present invention also offers it is a kind of can laser welding modified plastics preparation method.According to the present invention, there is provided a kind of laser transmittance height, easy dyeing, migration are low, good weatherability, can also meet the modified plastics that is chronically exposed to outer performance and appearance requirement, greatly expand application of the laser welding technology in automobile interior exterior gorget domain.
Description
Technical field
The present invention relates to Material Field, relate more specifically to it is a kind of can laser welding modified plastics and its preparation side
Method.
Background technology
Laser welding technology is to melt plastic contact surface by heat caused by laser beam, so by thermoplastic sheets,
The technology that film or molded parts are bonded together.The most frequently used laser welding form is referred to as laser transmission welding.
The process of laser transmission welding technology is：Two plastic items to be welded are clipped together first, then by one
Then the laser orientation in beam short-wave infrared area is absorbed by subsurface material, swashed by upper layer of material to position to be bonded, laser beam
Light energy, which is absorbed, causes the rise of subsurface material temperature, upper strata and the plastics with lower floor is melted, so as to complete to weld.Wherein,
Upper layer of material can be transparent either coloured, but allow for ensureing have enough laser to pass through.
However, material modified generally based on the outward appearance of black, traditional black on automobile interior exterior decorations is applied at present
Material modified such as MODIFIED PP (polypropylene), modified PC (makrolon), but due to these materials using carbon black as face
Material, thus it is very low to the transmitance of laser, cause laser welding can not be applied on this kind of material.In recent years, nigrosine was opened
Beginning is added in 30% glass fibre reinforced nylon as a kind of dyestuff, although this material can realize near infrared band
Selective penetrated property, but such dye toxicity is stronger, and cannot be used for MODIFIED PP, migration is high, it is impossible to be used in automotive field this
In parts outside the long-term exposure of kind.
The problem of above, significantly limit application of the laser welding technology in automobile interior exterior gorget domain, therefore have very much must
Develop one kind and possess certain weatherability, and the black modified plastics that dyestuff is not easy to migrate, the performance of vehicle and outer can be met
The demand of sight, the permeable of certain near infrared band laser is provided simultaneously with, so as to realize that laser welding is adornd in automobile interior exterior
The popularization and application in field.
The content of the invention
It is an object of the invention to provide it is a kind of can laser welding modified plastics and preparation method thereof, it is existing so as to solve
Either the material modified laser transmittance in technology is low, or the problem of strong toxicity, migration are again high.
In order to solve the above-mentioned technical problem, the present invention uses following technical scheme：
According to the first aspect of the invention, there is provided a kind of modified plastics, the modified plastics are the bases that can pass through to laser
Add a germline black toner in material to be prepared, the mass percent that system's black toner accounts for the modified plastics is
0.05~5%, modified plastics laser under 800~1100nm can pass through.
Wherein, it is that black toner is a kind of black series pigments, its concrete structure can be found in Chinese invention patent application
ZL200580004522.8, the pigment are a kind of different from carbon black, nigrosine, iron oxide black, eriochrome black, three chromatic colorant agent compositions
Black pigment.
The present inventor is proposed in a kind of permeable base material of laser on the basis of groping by substantial amounts of experiment
On the basis of add a germline black toner so as to obtain a kind of modified plastics, the pigment not only meets basic coloring requirement,
Toxicity is low, and migration is low, and have substantially no effect on the laser-transmissible of base material in itself, so as to provide it is a kind of can laser welding
Modified plastics, and realize popularization and application of the laser welding in automobile interior exterior gorget domain.
It is particularly preferred that the mass percent that system's black toner accounts for the modified plastics is 0.05~2%.
The permeable base material of the laser can be any one commonly used in the art, here by citing rather than limit
System ground, mainly includes：Modified polypropene (PP) and modified polycarbonate (PC).
It is particularly preferred that the present invention provide it is a kind of can laser welding modified plastics, by weight percentage, the modification
Plastics include following components：48~98% polypropylene, 0~25% toughener, 0~50% glass fibre and 0.05~2%
It is black toner, each component sum is equal to 100%.
It is further preferred that by weight percentage, the modified plastics includes following components：50~84% polypropylene, 0~19%
Toughener, 0~20% glass fibre and 0.05~2% be black toner, each component sum is equal to 100%.
It is particularly preferred that by weight percentage, the modified plastics includes following components：50~80% polypropylene, 0~
19% toughener, 0~20% glass fibre and 0.05~2% be black toner, each component sum is equal to 100%.
Preferably, the toughener is selected from：Ethylene-propylene copolymer, ethylene-butene copolymer or ethylene-octene copolymerization
Any one in thing.
The glass fibre is conventional circular glass or flat glass.Glass can be selected according to the performance requirement of material
The addition of glass fiber does not add glass fibre.
Preferably, the present invention provide another can laser welding modified plastics, it is by weight percentage, described to change
Property plastics include following components：20~80% makrolon, 15~75% modified resins, 0.1%~5% interfacial compatibilizer and
0.05~5% is black toner, and each component sum is equal to 100%.
It is further preferred that by weight percentage, the modified plastics includes following components：45~80% makrolon, 15~
50% modified resin, 0.1%~5% interfacial compatibilizer and 0.05~5% be black toner, each component sum is equal to
100%.
It is particularly preferred that by weight percentage, the modified plastics includes following components：45~65% makrolon, 30
~50% modified resin, 0.1%~5% interfacial compatibilizer and 0.1~0.2% be black toner, each component sum is equal to
100%.
Preferably, the makrolon is bisphenol A polycarbonate.
The modified resin can be acrylonitrile-styrene-butadiene (ABS), polyethylene terephthalate (PET)
Or any one in poly terephthalic acid hexylene glycol ester (PBT).
The polypropylene can be a kind of polypropylene of model or the polypropylene miser of Multiple Type.Different model is gathered
The melt index of propylene has difference, meets primarily to allowing matrix to have good processability and compare the mechanical performance of balance
The specification of outer exterior material, it is inherently permeable with certain laser also for matrix is made in addition.
Acrylonitrile-styrene-the butadiene (ABS) can be the ABS of latex A BS or mass polymerization, wherein each chain
The ratio of section can be combined according to the requirement of performance.
Preferably, above-mentioned modified plastics also includes at least one of antioxidant, lubricant and weather-proof auxiliary agent.
According to the second aspect of the invention, a kind of preparation of the modified plastics as described above for laser welding is also provided
Method, comprise the following steps：After system's black toner is put into high-speed mixer mixing together with the base material, in double spiral shells
Melting mixing is disperseed in bar extruder, and extrusion temperature is 200~250 DEG C, extruding pelletization, finally gives product.
Preferably, when the component of the modified plastics includes glass fibre, comprise the following steps：Will be except glass fibre
Outside other materials put into together high-speed mixer mix after, with side feed glass fibre together with double screw extruder melt
It is scattered to melt mixing, extrusion temperature is 200~250 DEG C, extruding pelletization, finally gives product.
According to the present invention, there is provided it is a kind of can laser welding modified plastics, creativeness of the invention essentially consists in, first
First passing through formulation optimization provides a kind of laser permeable base material, has the permeable basis of certain laser in itself in the base material
On, add a kind of laser-transmissible for not weakening the base material substantially is black toner, can laser welding so as to obtain one kind
Modified plastics, the modified plastics can either overcome conventional black material without laser-transmissible, while and can overcomes aniline
Class dyestuff can not to the material modified dyeing such as PP, and it is easy to migrate, weatherability is poor, it is impossible to meet that performance exposed for a long time and outward appearance will
The defects of asking.
In a word, the invention provides a kind of laser transmittance height, easy dyeing, migration be low, good weatherability, can also meet to grow
Phase is exposed to the modified plastics of outer performance and appearance requirement, is adornd so as to greatly expand laser welding technology in automobile interior exterior
The application in field.
Brief description of the drawings
Fig. 1 is the material prepared respectively with comparative example according to a preferred embodiment of the invention in 400nm~1100nm
In the range of laser transmittance curve comparison schematic diagram.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.It should be understood that following examples are merely to illustrate this
Invention is not for limitation the scope of the present invention.
It is that black toner includes a serial series pigments, they can meet that different color matchings and illumination are old respectively
Change etc. requires, and all models that this is black toner are applied to the present invention, it is, therefore, appreciated that following examples
Employed in toner model be illustrative only and unrestricted.
Embodiment 1
By 84kg polypropylene H9018,15kg ethylene-octene copolymer 8137,0.2kg systems black toner L480,0.3kg
Antioxidant 1010,0.2kg lubricants (stearic acid), the weather-proof auxiliary agents of 0.3kg, in the double screw extruder that draw ratio is 40: 1
Melting mixing is disperseed, and extrusion temperature is 200 DEG C, extruding pelletization, finally gives product.
Embodiment 2
By 54kg polypropylene K9017,27kg polypropylene BX3900,18kg ethylene-butene copolymer 7467,0.2kg systems
Black toner L480,0.3kg antioxidant 1010,0.2kg lubricants (stearic acid), the weather-proof auxiliary agents of 0.3kg, it is 40 in draw ratio
: melting mixing is disperseed in 1 double screw extruder, and extrusion temperature is 200 DEG C, extruding pelletization, finally gives product.
On the basis of embodiment 1, the polypropylene that the polypropylene of single model is replaced with to two kinds of models mixes embodiment 2
Thing, both polypropylene are the homopolymerization polypropylene for melting finger different with copolymerization respectively, and the combination of the two components is meeting material tool
On the basis of standby certain processing type and mechanical property, it ensure that base material is permeable with higher laser with respect to embodiment 1,
Add same amount be black toner after, its laser is permeable still to have higher level with respect to embodiment 1.
Embodiment 3
By 50kg polypropylene K9017,30kg polypropylene BX3900,19kg ethylene-butene copolymer 7467,0.05kg systems
Black toner L480,0.3kg antioxidant 1010,0.3kg lubricants (stearic acid), the weather-proof auxiliary agents of 0.35kg, it is in draw ratio
Melting mixing is disperseed in 40: 1 double screw extruder, and extrusion temperature is 200 DEG C, extruding pelletization, finally gives product.
Embodiment 4
By 50kg polypropylene K9017,30kg polypropylene BX3900,17kg ethylene-butene copolymer 7467,2kg systems are black
Color toner L480,0.3kg antioxidant 1010,0.3kg lubricants (stearic acid), the weather-proof auxiliary agents of 0.35kg, it is 40 in draw ratio:
Melting mixing is disperseed in 1 double screw extruder, and extrusion temperature is 200 DEG C, extruding pelletization, finally gives product.
By the contrast of embodiment 4 and embodiment 3, the addition of series pigments will not make matrix as ordinary carbon black
Transmitance the decline of matter occurs, but as the raising of series pigments addition, transmitance are on a declining curve.
Embodiment 5
By 78kg polypropylene EP548R, 0.5kg system black toner L480,0.3kg antioxidant 1010s, 0.2kg lubricants
(stearic acid), the weather-proof auxiliary agents of 0.3kg, after 0.5kg interface modifier mixed at high speed, the 20kg glass fibres fed with side are in major diameter
Disperse than melting mixing in the double screw extruder for 40: 1, extrusion temperature is 200 DEG C, extruding pelletization, finally gives product.
Embodiment 6
By 45kg makrolon Lexan141,50kg ABS GP22, interfacial compatibilizer 4kg, 0.3kg antioxidant 1010,
0.5kg lubricants, 0.2kg systems black toner S0084, the melting mixing point in the double screw extruder that draw ratio is 35: 1
Dissipate, extrusion temperature is 250 DEG C, extruding pelletization, finally gives product.
Embodiment 7
By 65kg makrolon Lexan141,30kg PBT GX121, interfacial compatibilizer 4kg, 0.3kg antioxidant 1010,
0.5kg lubricants, 0.1kg systems black toner S0084, the melting mixing point in the double screw extruder that draw ratio is 35: 1
Dissipate, extrusion temperature is 250 DEG C, extruding pelletization, finally gives product.
Comparative example 1
By 50kg polypropylene K9017,30kg polypropylene BX3900,19kg ethylene-butene copolymer 7467,5kg systems are black
Color toner L480,0.3kg antioxidant 1010,0.3kg lubricants (stearic acid), the weather-proof auxiliary agents of 0.35kg, it is 40 in draw ratio:
Melting mixing is disperseed in 1 double screw extruder, and extrusion temperature is 200 DEG C, extruding pelletization, finally gives product.
Comparative example 2
By 50kg polypropylene K9017,30kg polypropylene BX3900,19kg ethylene-butene copolymer 7467,0.3kg antioxygens
Agent 1010,0.3kg lubricants (stearic acid), the weather-proof auxiliary agents of 0.40kg, melted in the double screw extruder that draw ratio is 40: 1
It is scattered to melt mixing, extrusion temperature is 200 DEG C, extruding pelletization, finally gives product.
Comparative example 3
By 84kg polypropylene H9018,15kg ethylene-octene copolymer 8137, carbon black 0.2kg, 0.3kg antioxidant 1010,
0.2kg lubricants (stearic acid), the weather-proof auxiliary agents of 0.3kg, the melting mixing point in the double screw extruder that draw ratio is 40: 1
Dissipate, extrusion temperature is 200 DEG C, extruding pelletization, finally gives product.
Comparative example 4
By 45kg makrolon Lexan141,50kg ABS GP22, interfacial compatibilizer 4kg, 0.3kg antioxidant 1010,
0.5kg lubricants, 0.2kg routine azo organic dyestuff, the melting mixing point in the double screw extruder that draw ratio is 35: 1
Dissipate, extrusion temperature is 250 DEG C, extruding pelletization, finally gives product.
Particle caused by being granulated in above example, under the conditions of identical Shooting Technique, it is 2mm's to be injection molded into thickness
Model, and with Hunterlab professional spectrophotometric color measurement instrument UltraScan PRO test sample plates in 450nm~1100nm wave band models
The transmitance enclosed, as a result as shown in Figure 1.
Wherein, modified plastics produced by the present invention such as tenacity-increased profax (embodiment 2,3,4), fiber glass reinforced polypropylene are passed through
(embodiment 5), PC+ABS (embodiment 6), PC+PBT (embodiment 7) have preferably in 800~1100nm of laser emission band
Transmitance, the requirement of laser welding can be met.And in the case of using same substrate, it is (right using material made from carbon black
Than example 3) 800~1100nm of laser emission band transmitance it is substantially zeroed, hence it is evident that less than using being black toner system
The modified plastics (embodiment 1,2,3,4,5) obtained, swashed using material (comparison example 4) made from conventional azo organic dyestuff
It is black toner system equally significantly lower than using although 800~1100nm of light emission band is with certain transmitance
The modified plastics (embodiment 6) obtained.
In the present invention, with reference to example 3,4 and comparative example 1,2,3 it is seen that the addition of series pigments will not be as ordinary carbon black
Make the transmitance of matrix that the decline of matter occur, but with the raising of series pigments addition, transmitance is on a declining curve, because
This, optimal addition is within 2%.
It follows that made according to modified plastics provided by the invention by adding a germline black toner in the substrate
Good transmitance can be had in 800~1100nm of laser emission band by obtaining the modified plastics, can meet laser welding
It is required that specifically, modified polypropylene material can also can meet the illumination standard 2500KJ/m of SAE J 25272Requirement,
Meet the use environment requirement of automobile exterior part.
Above-described, only presently preferred embodiments of the present invention is not limited to the scope of the present invention, of the invention is upper
Stating embodiment can also make a variety of changes.What i.e. every claims and description according to the present patent application were made
Simply, equivalent changes and modifications, the claims of patent of the present invention are fallen within.The not detailed description of the present invention is
Routine techniques content.
Claims (10)
1. it is a kind of can laser welding modified plastics, it is characterised in that the modified plastics be to laser can pass through base material
One germline black toner of middle addition is prepared, and the mass percent that system's black toner accounts for the modified plastics is
0.05~5%, modified plastics laser under 800~1100nm can pass through.
2. modified plastics according to claim 1, it is characterised in that the permeable base material of the laser includes：It is modified poly-
Propylene or modified polycarbonate.
3. modified plastics according to claim 2, it is characterised in that by weight percentage, the modified plastics includes
Following components：48~98% polypropylene, 0~25% toughener, 0~50% glass fibre and 0.05~2% be black color
Powder, each component sum are equal to 100%.
4. modified plastics according to claim 3, it is characterised in that the toughener is selected from：Ethylene-propylene copolymer,
Any one in ethylene-butene copolymer or ethylene-octene copolymer.
5. modified plastics according to claim 2, it is characterised in that by weight percentage, the modified plastics includes
Following components：20~80% makrolon, 15~75% modified resins, 0.1%~5% interfacial compatibilizer and 0.05~5%
It is black toner, each component sum is equal to 100%.
6. modified plastics according to claim 5, it is characterised in that the makrolon is bisphenol A polycarbonate.
7. modified plastics according to claim 5, it is characterised in that the modified resin is acrylonitrile-styrene-fourth two
Any one in alkene, polyethylene terephthalate or poly terephthalic acid hexylene glycol ester.
8. the modified plastics according to claim 3 or 5, it is characterised in that the modified plastics also includes antioxidant, lubrication
At least one of agent and weather-proof auxiliary agent.
9. it is a kind of according to any one in claim 1~8 can laser welding modified plastics preparation method, its
It is characterised by, comprises the following steps：After system's black toner is put into high-speed mixer mixing together with the base material,
Melting mixing is disperseed in double screw extruder, and extrusion temperature is 200~250 DEG C, and extruding pelletization, finally giving one kind can Laser Welding
The modified plastics connect, modified plastics laser under 800~1100nm can pass through.
10. preparation method according to claim 9, it is characterised in that when the component of the modified plastics includes glass fibers
During dimension, comprise the following steps：After other materials in addition to glass fibre is put into high-speed mixer mixing together, fed with side
Glass fibre melting mixing is disperseed in double screw extruder together, extrusion temperature be 200~250 DEG C, extruding pelletization, finally
Obtain it is a kind of can laser welding modified plastics.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711005774.3A CN107652653B (en) | 2017-10-25 | 2017-10-25 | Modified plastic capable of being used for laser welding and preparation method thereof |
| PCT/CN2018/081960 WO2019080456A1 (en) | 2017-10-25 | 2018-04-04 | A modified plastic for laser welding and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711005774.3A CN107652653B (en) | 2017-10-25 | 2017-10-25 | Modified plastic capable of being used for laser welding and preparation method thereof |
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| Publication Number | Publication Date |
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| CN107652653A true CN107652653A (en) | 2018-02-02 |
| CN107652653B CN107652653B (en) | 2020-05-08 |
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| WO (1) | WO2019080456A1 (en) |
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| CN110791023A (en) * | 2019-10-23 | 2020-02-14 | 江苏金发科技新材料有限公司 | Laser-weldable modified polypropylene material and preparation method thereof |
| CN111057310A (en) * | 2019-12-30 | 2020-04-24 | 江苏金发科技新材料有限公司 | Long glass fiber reinforced polypropylene compound for black light-transmitting layer in laser welding and application thereof |
| CN111073138A (en) * | 2019-12-18 | 2020-04-28 | 上海金发科技发展有限公司 | Light-permeable polypropylene composition with good wear resistance and preparation method thereof |
| CN114127170A (en) * | 2019-07-19 | 2022-03-01 | 利安德巴塞尔先进聚合物公司 | Laser-transparent composition and laser welding method |
| CN115368701A (en) * | 2022-07-26 | 2022-11-22 | 武汉金发科技有限公司 | Weather-resistant laser-weldable polypropylene composite material and preparation method and application thereof |
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| CN111057310A (en) * | 2019-12-30 | 2020-04-24 | 江苏金发科技新材料有限公司 | Long glass fiber reinforced polypropylene compound for black light-transmitting layer in laser welding and application thereof |
| CN115368701A (en) * | 2022-07-26 | 2022-11-22 | 武汉金发科技有限公司 | Weather-resistant laser-weldable polypropylene composite material and preparation method and application thereof |
| CN115368701B (en) * | 2022-07-26 | 2023-12-22 | 武汉金发科技有限公司 | Weather-resistant polypropylene composite material capable of being welded by laser, and preparation method and application thereof |
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| Publication number | Publication date |
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| WO2019080456A1 (en) | 2019-05-02 |
| CN107652653B (en) | 2020-05-08 |
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