CN110256796B - Special high-light-reflection PMMA master batch for traffic and preparation method thereof - Google Patents
Special high-light-reflection PMMA master batch for traffic and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
- C08J2433/12—Homopolymers or copolymers of methyl methacrylate
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/24—Homopolymers or copolymers of amides or imides
- C08J2433/26—Homopolymers or copolymers of acrylamide or methacrylamide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
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Abstract
The invention discloses a traffic special high-light-reflection PMMA master batch which is characterized by comprising the following components in parts by weight: 85-90 parts of matrix PMMA, 3-6 parts of light diffusant, 4-5 parts of liquid adsorbent, 0.5-0.9 part of dispersing agent, 2-5 parts of high-permeability dye, wherein the light diffusant is organosilicon light diffusant, and the adsorbent is liquid adsorbent mainly made of optically active polymethacrylic acid amide. The preparation method of the master batch comprises the following steps: pouring the light diffusant into the liquid adsorbent while stirring, adding PMMA and the dispersing agent into a light diffusant system, uniformly stirring, putting the mixture and the high-permeability dye into a co-rotating double-screw extruder for blending, extruding and drawing, and granulating to obtain master batches, wherein the light transmittance is more than or equal to 88% and the haze is more than or equal to 98% when the master batches are used for traffic special lampshade materials. The high-reflective PMMA master batch special for traffic, prepared by the invention, omits the step of modifying the light diffusant, reduces the production cost, and is dust-free and environment-friendly in the preparation process.
Description
Technical Field
The invention relates to a master batch and a preparation method thereof, in particular to a high-light-reflection PMMA master batch special for traffic and a preparation method thereof.
Background
Automotive lamps are essential in human life, and for most of the lamps, uniform spatial light intensity distribution of illumination light is required. However, almost all light sources operate as point or line light sources. At present, a rapidly developed semiconductor Light Emitting Diode (LED) brings a revolution to a world illumination light source, the LED is a typical point light source, and an LED tube core has high brightness, energy conservation, environmental protection, long service life and small size, but a light emitting area is also very small. To achieve uniform illumination, it is necessary to convert the light emitted from the point light source into surface emission.
The LED has high brightness and strong light, while the common lampshade of the car lamp is only made of simple materials such as PC, PMMA, PS and the like, wherein a small amount of toner is added, light is refracted for numerous times through the surface of the toner to achieve the effect of light diffusion, namely soft light, but the existing toner is generally inorganic toner, the light energy loss is large when the light penetrates through the existing toner, the brightness is reduced, and the light transmittance of the lampshade material is low and is generally less than or equal to 70%.
Disclosure of the invention
The invention provides a traffic special high-light-reflection PMMA master batch and a preparation method thereof, aiming at overcoming the problems of small light emitting area, large light energy loss and low light transmittance when light passes through a lampshade material, wherein a light diffusant is mixed with PMMA, and a high-light product is prepared after injection molding.
In order to achieve the above purpose, the technical problem solved by the present invention is realized by adopting the following technical scheme:
the invention provides a traffic special high-light-reflection PMMA master batch which is characterized by comprising the following components in parts by weight: 85-90 parts of matrix polymethyl methacrylate, 3-6 parts of light diffusant, 4-5 parts of liquid adsorbent, 0.5-0.9 part of dispersing agent and 2-5 parts of high-permeability dye, wherein the light diffusant is organic silicon light diffusant, and the liquid adsorbent is liquid adsorbent taking optical rotation polymethyl methacrylate amide as a main body.
Further, the particle size of the light diffusing agent is in a nanometer level.
Further, the dispersing agent is one or more of vinyl bis stearamide, glyceryl monostearate and glyceryl tristearate.
Further, the high-transmittance dye is one or more of high-transmittance yellow, high-transmittance red, high-transmittance orange, high-transmittance green, high-transmittance blue and high-transmittance pink.
The invention also provides a preparation method of the special traffic high-light-reflection PMMA master batch, which is characterized by comprising the following steps:
pouring the light diffusant into the liquid adsorbent while stirring, so that the light diffusant is uniformly dispersed in the liquid adsorbent;
adding polymethyl methacrylate and a dispersant into a light diffusant system, and uniformly stirring to uniformly distribute the light diffusant on the surface of the polymethyl methacrylate;
thirdly, putting the mixed system and the high-permeability dye into a co-rotating double-screw extruder for blending, extruding and traction;
and fourthly, cutting into particles to obtain the traffic special high-light-reflection PMMA master batch.
Further, the diameter D of the screw of the co-rotating twin-screw extruder is 71mm, the length-diameter ratio L/D is 60, the rotating speed of the main machine is 450-550Hz, and the temperature control of the screw cylinder is set as follows: zone 1 200 deg.C, zone 2 205 deg.C, zone 3 210 deg.C, zone 4-11 deg.C, 220 deg.C, and die temperature 230 deg.C.
Further, the pelletizing mode is water-cooling pelletizing.
The invention has the beneficial effects that: the light diffusant is mixed with PMMA, and the high-light-reflection product is obtained after injection molding, wherein when the high-light-reflection product is used as a traffic special lampshade material, the light transmittance is more than or equal to 88%, and the haze is more than or equal to 98%. The liquid adsorbent is adopted, so that the light diffusant is well dispersed in the matrix material, a good light diffusion effect is achieved, the step of modifying the light diffusant is omitted, the production cost is reduced, and the preparation process is dust-free and environment-friendly. Meanwhile, the prepared PMMA master batch has excellent optical performance, temperature resistance, sun resistance and no fading by using the temperature-resistant and sun-proof high-transmittance pigment.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be purely exemplary and are not intended to be limiting.
The invention relates to a traffic special high-light-reflection PMMA master batch, which comprises the following components in parts by weight: 85-90 parts of matrix polymethyl methacrylate, 3-6 parts of light diffusant, 4-5 parts of liquid adsorbent, 0.5-0.9 part of dispersing agent and 2-5 parts of high-permeability dye.
The light diffusant has a nanometer particle size, can be one or more of an organic silicon light diffusant, an acrylate resin light diffusant and a styrene resin light diffusant, is easy to agglomerate when being directly used without pretreatment and is poorly dispersed in a matrix. The organic silicon light diffusant belongs to organic light diffusants, and is a polymer microsphere which is connected by silicon-oxygen bonds and has a three-dimensional structure. The organic silicon light diffusant has high diffusion efficiency, good compatibility with matrix resin, good dispersibility, small specific gravity, low water absorption and more balanced light transmittance and light uniformity.
The adsorbent is a liquid adsorbent taking optical rotation polymethacrylic acid amide as a main body, and has a porous structure with large specific surface area and super strong adsorption force, so that light diffusion can be well dispersed in a base material, a good light diffusion effect is achieved, a step of modifying the light diffuser is omitted, the production cost is reduced, and the preparation process is dust-free and environment-friendly. Optically active adsorbents are capable of separating racemic mixtures into their optically active enantiomers and are commonly used in chromatographic separations. Optically active polyacrylamides can be attached to the siloxane bond directly or by means of a methacryloyl group via hydrogen bonding. The optical rotation adsorbent is selected as a dispersing carrier of the organic silicon light diffusant, so that the effects of better combination and more uniform dispersion of the optical rotation adsorbent and the organic silicon light diffusant are achieved.
The dispersant is one or more of vinyl bis stearamide, glyceryl monostearate and glyceryl tristearate. The high-permeability dye is one or more of high-permeability yellow, high-permeability red, high-permeability orange, high-permeability green, high-permeability blue and high-permeability pink which have temperature resistance and sun fastness, so that the prepared master batch has excellent optical performance and also has the characteristics of temperature resistance, sun fastness and fastness.
The preparation method of the special traffic high-light-reflection PMMA master batch comprises the following steps: firstly, pouring the light diffusant into the liquid adsorbent while stirring, and uniformly dispersing the light diffusant into the liquid adsorbent to ensure that the light diffusant is not easy to float in the subsequent operation. And then adding PMMA and a dispersant into a light diffusant system, stirring uniformly, and uniformly distributing the light diffusant on the surface of the PMMA because the light diffusant is wrapped by the liquid adsorbent in advance, and when the PMMA is introduced, the PMMA is fully soaked with the light diffusant through the liquid adsorbent. And finally, putting the mixed system and the high-permeability dye into a co-rotating double-screw extruder for blending, extruding and traction, wherein the screw diameter D of the co-rotating double-screw extruder is 71mm, the length-diameter ratio L/D is 60, the rotating speed of a main machine is 450-550Hz, and the temperature control of a screw barrel is set as follows: zone 1 200 deg.C, zone 2 205 deg.C, zone 3 210 deg.C, zone 4-11 deg.C, 220 deg.C, and die temperature 230 deg.C. And finally, granulating to obtain the traffic special high-light-reflection PMMA master batch, wherein the granulating mode is water-cooling granulation.
Example 1:
the high-light-reflection PMMA master batch special for traffic comprises the following components in parts by weight: 87 parts of matrix polymethyl methacrylate, 5 parts of organic silicon light diffusant, 4.4 parts of optical rotation adsorbent, 0.6 part of dispersing agent EBS and 3 parts of high-transmittance orange dye.
The preparation method of the traffic-specific highly reflective PMMA master batch of the embodiment comprises the following steps: firstly, pouring the organic silicon light diffusant into the optical rotation adsorbent while stirring, and uniformly dispersing the organic silicon light diffusant into the optical rotation adsorbent, so that the organic silicon light diffusant is not easy to float in the subsequent operation. And then adding the matrix PMMA and the dispersing agent EBS into the organic silicon light diffusing agent system, and uniformly stirring, wherein the organic silicon light diffusing agent is wrapped by the optical activity liquid adsorbent in advance, and when the matrix PMMA is introduced, the matrix PMMA is fully soaked with the organic silicon light diffusing agent through the optical activity liquid adsorbent, so that the organic silicon light diffusing agent is uniformly distributed on the surface of the matrix PMMA. And finally, putting the mixed system and the high-transparency orange dye into a co-rotating double-screw extruder for blending, extruding and drawing, wherein the diameter D of a screw of the co-rotating double-screw extruder is 71mm, the length-diameter ratio L/D is 60, the rotating speed of a host is 510Hz, and the temperature control of a screw cylinder is as follows: zone 1 200 deg.C, zone 2 205 deg.C, zone 3 210 deg.C, zone 4-11 deg.C, 220 deg.C, and die temperature 230 deg.C. And finally, granulating to obtain the traffic special high-light-reflection PMMA master batch, wherein the granulating mode is water-cooling granulation.
The light transmittance of the traffic special lampshade material prepared from the PMMA master batch prepared by the embodiment is 90%, and the haze is 99%.
Example 2:
the high-light-reflection PMMA master batch special for traffic comprises the following components in parts by weight: 88 parts of matrix polymethyl methacrylate, 3.6 parts of acrylate resin light diffusant, 0.9 part of organic silicon light diffusant, 4.5 parts of optical activity adsorbent, 0.8 part of dispersing agent EBS and 2.2 parts of high-transmittance red dye.
The preparation method of the traffic-specific highly reflective PMMA master batch of the embodiment comprises the following steps: firstly, the light diffusant is poured into the optical activity adsorbent while being stirred, and the light diffusant is uniformly dispersed in the optical activity adsorbent, so that the light diffusant is not easy to float in the subsequent operation. And then adding the matrix PMMA and the dispersing agent EBS into the light diffusing agent system, stirring uniformly, and when the matrix PMMA is introduced, the matrix PMMA is also fully impregnated with the light diffusing agent through the optical activity liquid adsorbent because the light diffusing agent is wrapped by the optical activity liquid adsorbent in advance, so that the light diffusing agent is uniformly distributed on the surface of the matrix PMMA. And finally, putting the mixed system and the high-transparency orange dye into a co-rotating double-screw extruder for blending, extruding and drawing, wherein the diameter D of a screw of the co-rotating double-screw extruder is 71mm, the length-diameter ratio L/D is 60, the rotating speed of a host is 510Hz, and the temperature control of a screw cylinder is as follows: zone 1 200 deg.C, zone 2 205 deg.C, zone 3 210 deg.C, zone 4-11 deg.C, 220 deg.C, and die temperature 230 deg.C. And finally, granulating to obtain the traffic special high-light-reflection PMMA master batch, wherein the granulating mode is water-cooling granulation.
The light transmittance of the traffic special lampshade material prepared from the PMMA master batch prepared by the embodiment is 89%, and the haze is 98%.
Example 3:
the high-light-reflection PMMA master batch special for traffic comprises the following components in parts by weight: 90 parts of matrix polymethyl methacrylate, 3 parts of styrene resin light diffusant, 4 parts of optical rotation adsorbent, 0.5 part of dispersing agent EBS and 2.5 parts of high-blue-transmittance dye.
The preparation method of the traffic-specific highly reflective PMMA master batch of the embodiment comprises the following steps: firstly, pouring the styrene resin light dispersing agent into the optical rotation adsorbent while stirring, and uniformly dispersing the styrene resin light dispersing agent into the optical rotation adsorbent, thereby ensuring that the styrene resin light dispersing agent is not easy to scatter in the subsequent operation. Then adding the matrix PMMA and the dispersant EBS into a styrene resin light diffusant system, and uniformly stirring, wherein the styrene resin light diffusant is wrapped by the optical activity liquid adsorbent in advance, and when the matrix PMMA is introduced, the matrix PMMA is fully impregnated with the styrene resin light diffusant through the optical activity liquid adsorbent, so that the styrene resin light diffusant is uniformly distributed on the surface of the matrix PMMA. And finally, putting the mixed system and the high blue-permeable dye into a co-rotating double-screw extruder for blending, extruding and drawing, wherein the diameter D of a screw of the co-rotating double-screw extruder is 71mm, the length-diameter ratio L/D is 60, the rotating speed of a host is 510Hz, and the temperature control of a screw cylinder is set as follows: zone 1 200 deg.C, zone 2 205 deg.C, zone 3 210 deg.C, zone 4-11 deg.C, 220 deg.C, and die temperature 230 deg.C. And finally, granulating to obtain the traffic special high-light-reflection PMMA master batch, wherein the granulating mode is water-cooling granulation.
The light transmittance of the traffic special lampshade material prepared from the PMMA master batch prepared by the embodiment is 92%, and the haze is 98%.
In order to further illustrate the superior effects of the master batch PMMA master batch prepared by the invention and the prior products, the performance of the special traffic lampshade material prepared by the master batch PMMA master batch prepared by the invention is compared with the prior products, and the specific product technical parameter comparison table is as follows:
comparison table of technical parameters of the invention and the existing products
| Product(s) | Transmittance (%) | Haze (%) |
| Example 1 | 90％ | 99％ |
| Example 2 | 89％ | 98％ |
| Example 3 | 92％ | 98％ |
| Existing products | ≤70％ | <5％ |
From the above table, it can be seen that the highly reflective PMMA master batch for traffic special use prepared by the invention mixes the nano-scale light diffusant with PMMA, and simultaneously adopts the liquid optical activity adsorbent, because the liquid optical activity adsorbent has a porous structure with large specific surface area and super strong adsorption force, the light diffusion is well dispersed in the basic material, so as to achieve good light diffusion effect, and the high light product is prepared after injection molding, and when the high light product is used for a traffic special lampshade material, the high light transmittance and the high light diffusivity are far superior to the prior art level.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (7)
1. The high-light-reflection PMMA master batch special for traffic is characterized by comprising the following components in parts by weight: 85-90 parts of matrix polymethyl methacrylate, 3-6 parts of light diffusant, 4-5 parts of adsorbent, 0.5-0.9 part of dispersing agent and 2-5 parts of high-permeability dye, wherein the light diffusant is organic silicon light diffusant, and the adsorbent is a liquid adsorbent taking optical activity polymethacrylic acid amide as a main body;
the processing steps are as follows: pouring the light diffusant into the liquid adsorbent while stirring, so that the light diffusant is uniformly dispersed in the liquid adsorbent;
adding polymethyl methacrylate and a dispersant into a light diffusant system, and uniformly stirring to uniformly distribute the light diffusant on the surface of the polymethyl methacrylate;
thirdly, putting the mixed system and the high-permeability dye into a co-rotating double-screw extruder for blending, extruding and traction;
and fourthly, cutting into particles to obtain the traffic special high-light-reflection PMMA master batch.
2. The PMMA masterbatch with high light reflection for traffic special purpose of claim 1, wherein the particle size of the light diffusing agent is nanometer.
3. The PMMA masterbatch with high light reflectivity for transportation of claim 1, wherein the dispersant is one or more of vinyl bis stearamide, glyceryl monostearate and glyceryl tristearate.
4. The PMMA masterbatch with high light reflectivity for transportation of claim 1, wherein the high-transparent dye is one or more of high transparent yellow, high transparent red, high transparent orange, high transparent green, high transparent blue and high transparent pink.
5. The traffic-specific highly reflective PMMA masterbatch according to any one of claims 1-4, wherein the masterbatch has a light transmittance of not less than 88% and a haze of not less than 98%.
6. The PMMA master batch special for traffic with high light reflection as claimed in claim 1, wherein the diameter D of the screw of the co-rotating twin-screw extruder is 71mm, the length-diameter ratio L/D is 60, the rotating speed of the host is 450-550Hz, and the temperature control of the screw cylinder is set as follows: zone 1 200 deg.C, zone 2 205 deg.C, zone 3 210 deg.C, zone 4-11 deg.C, 220 deg.C, and die temperature 230 deg.C.
7. The PMMA masterbatch with high light reflection for traffic special purpose of claim 1, wherein the cutting manner is water cooling cutting.
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| CN87104030A (en) * | 1986-06-07 | 1987-12-16 | 默克专利股份有限公司 | Optically active adsorbents |
| EP1127090B1 (en) * | 1998-11-06 | 2003-04-09 | General Electric Company | Thermoplastic article having low clarity and low haze |
| CN104448651A (en) * | 2014-12-10 | 2015-03-25 | 厦门德丰行塑胶工业有限公司 | Heat-resistant high-transparency photodiffusion PMMA (polymethyl methacrylate) material and preparation method thereof |
| CN104530579A (en) * | 2014-12-23 | 2015-04-22 | 苏州贤聚科技有限公司 | Light diffusion master batch and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87104030A (en) * | 1986-06-07 | 1987-12-16 | 默克专利股份有限公司 | Optically active adsorbents |
| EP1127090B1 (en) * | 1998-11-06 | 2003-04-09 | General Electric Company | Thermoplastic article having low clarity and low haze |
| CN104448651A (en) * | 2014-12-10 | 2015-03-25 | 厦门德丰行塑胶工业有限公司 | Heat-resistant high-transparency photodiffusion PMMA (polymethyl methacrylate) material and preparation method thereof |
| CN104530579A (en) * | 2014-12-23 | 2015-04-22 | 苏州贤聚科技有限公司 | Light diffusion master batch and preparation method thereof |
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