CN109669234B - Light guide strip capable of emitting light on whole body and preparation method thereof - Google Patents
Light guide strip capable of emitting light on whole body and preparation method thereof Download PDFInfo
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- CN109669234B CN109669234B CN201910144332.XA CN201910144332A CN109669234B CN 109669234 B CN109669234 B CN 109669234B CN 201910144332 A CN201910144332 A CN 201910144332A CN 109669234 B CN109669234 B CN 109669234B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02033—Core or cladding made from organic material, e.g. polymeric material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—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 a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the field of light transmission materials, and particularly relates to a light guide strip capable of emitting light on the whole body and a preparation method thereof. The invention discloses a whole-body luminous light guide strip which comprises a core layer and a cladding layer, wherein the core layer is made of at least one material selected from polystyrene, polycarbonate, polyethylene, polyvinyl chloride, polymethyl methacrylate and modified polymethyl methacrylate. The light guide strip provided by the invention is simple in raw material, high in mechanical property and good in weather resistance.
Description
Technical Field
The invention belongs to the field of light transmission materials, and particularly relates to a light guide strip capable of emitting light on the whole body and a preparation method thereof.
Background
The 21 st century human society is moving into the information age, and the requirements of people on information exchange are increasing day by day. The worldwide trend of communication and information sharing has made the demand for optical fiber systems with large information capacity as communication systems of transmission media more and more urgent, so many countries are implementing or planning to implement information highway engineering. At present, it is no longer difficult to make an optical cable made of glass optical fiber across mountains and rivers or deep in the ocean, but there is almost insurmountable obstacle in connecting individual households with glass optical fiber, i.e., optical fiber is in the home. This is mainly due to the fact that glass fibers are typically only a few microns, which requires high technology in terms of interfaces and the like, and the interfaces are expensive and unacceptable to users. Therefore, people invest huge manpower and material resources in seeking a novel optical fiber system with low cost and simple and easy operation, and the research of the optical fiber system taking organic matters as materials is carried forward, and Plastic Optical Fiber (POF) has incomparable advantages compared with glass optical fiber when used for optical information transmission, such as large diameter, light weight, easy processing, low cost, high coupling efficiency, good flexibility and the like, and has excellent radiation resistance.
The organic optical fiber, i.e., plastic optical fiber, is prepared from a highly transparent amorphous isotropic polymer. Although much cheaper than silica fiber, plastic fiber also has some disadvantages, such as (1) high loss, high POF loss due to internal scattering caused by macromolecules; (2) the heat resistance is poor, and the heat-resistant paint can be generally used only within the temperature range of-40 to 80 ℃; (3) the broadband is relatively small, which affects the wide application of the broadband in communication systems.
Disclosure of Invention
In order to solve the technical problem, a first aspect of the present invention provides a light guide bar emitting light through the whole body, including a core layer and a cladding layer, wherein the core layer is made of at least one material selected from polystyrene, polycarbonate, polyethylene, polyvinyl chloride, polymethyl methacrylate and modified polymethyl methacrylate.
As a preferable technical solution, the core layer material is polymethyl methacrylate and/or modified polymethyl methacrylate.
In a preferred embodiment, the modified polymethyl methacrylate is titanium dioxide modified polymethyl methacrylate.
In a preferred embodiment, the clad material is a fluorine-containing resin.
In a preferred embodiment, the fluorine-containing resin is at least one selected from the group consisting of polytetrafluoroethylene, polytetrafluoroethylene-hexafluoropropylene copolymer, and polytetrafluoroethylene-propylene copolymer.
As a preferable technical scheme, the fluorine-containing resin is polytetrafluoroethylene-hexafluoropropylene copolymer.
As a preferable technical scheme, the melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 1-25 g/10 min.
As a preferable technical scheme, the melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 6-16 g/10 min.
As an optimized technical scheme, the outer diameter of the light guide strip is 0.25-3 mm.
The second aspect of the present invention provides a method for preparing a light guide strip emitting light through the body, comprising the following steps:
(1) melting and plasticizing the core layer material by a core material extruder, feeding the core layer material into a core layer material feeding port, feeding the core layer material into a mold core runner through a core layer material shunting cone runner to form a core, and feeding the core into a molding die port;
(2) and melting and plasticizing the cladding material by a cladding extruder, feeding the cladding material into a cladding material feeding port, feeding the cladding material into a cladding material shunting channel between a die cover and a die core through a cladding material shunting cone channel, feeding the cladding material into a forming die port, coating the cladding material on the periphery of the core, and carrying out traction, rolling, cutting and packaging to obtain the finished product.
Has the advantages that: the light guide strip provided by the invention is simple in raw material, high in mechanical property and good in weather resistance.
Detailed Description
For purposes of the following detailed description, it is to be understood that the invention may assume various alternative variations and step sequences, except where expressly specified to the contrary. Moreover, other than in any operating examples, or where otherwise indicated, all numbers expressing, for example, quantities of ingredients used in the specification and claims are to be understood as being modified in all instances by the term "about". Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximations that may vary depending upon the desired properties to be obtained by the present invention. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.
Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
When a range of values is disclosed herein, the range is considered to be continuous and includes both the minimum and maximum values of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range-describing features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to encompass any and all subranges subsumed therein. For example, a stated range from "1 to 10" should be considered to include any and all subranges between the minimum value of 1 and the maximum value of 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, and the like.
In order to solve the above problems, the present invention provides a light guide strip emitting light through the whole body, which includes a core layer and a cladding layer, wherein the core layer is made of at least one material selected from polystyrene, polycarbonate, polyethylene, polyvinyl chloride, polymethyl methacrylate and modified polymethyl methacrylate.
Core layer material
In a preferred embodiment, the core layer material is polymethyl methacrylate and/or modified polymethyl methacrylate.
The abbreviated code of the methyl methacrylate is PMMA, and the methyl methacrylate is a polymer obtained by polymerizing acrylic acid and esters thereof.
The polymethyl methacrylate may be purchased or manufactured by itself.
The preparation method of the polymethyl methacrylate comprises the steps of adding the methyl methacrylate, the benzoyl peroxide, a proper amount of plasticizer and a release agent into a stirring kettle, polymerizing the mixture into slurry with low viscosity at 90-95 ℃, and cooling the slurry with ice water. And (3) pouring the viscous prepolymer into an inorganic glass flat plate mold, moving the viscous prepolymer into an air bath, slowly heating to 40-50 ℃, polymerizing for 1-2 days, further heating to 100-120 ℃ to fully polymerize residual monomers, and performing post-treatment to obtain the high-performance low-temperature-resistant high-pressure-resistant high-temperature-resistant.
The applicant has found that the polymethyl methacrylate has a low specific gravity; the light transmittance is high, and the common light can be transmitted by 90-92% and the ultraviolet ray can be transmitted by 73-76%; the cracking resistance is good, and the mechanical strength and the toughness are more than 10 times of those of the silica glass; the cable material has the advantages of outstanding weather resistance and aging resistance, high impact strength, good electrical insulation performance, electric arc resistance, stable chemical performance and general chemical corrosion resistance.
In a preferred embodiment, the modified polymethyl methacrylate is titanium dioxide-modified polymethyl methacrylate.
The preparation method of the titanium dioxide modified polymethyl methacrylate comprises the following steps:
(1) weighing 0.7mol of methyl methacrylate, 0.1mol of vinyltrimethoxysilane and 0.05g of azobisisobutyronitrile into a 100mL polytetrafluoroethylene reaction kettle;
(2) weighing a certain amount of n-butyl titanate, and adding the n-butyl titanate into the polytetrafluoroethylene reaction kettle in the step (1);
(3) dissolving 2g of absolute ethyl alcohol and 0.825g of concentrated hydrochloric acid in 40mL of tetrahydrofuran, and pouring the mixed solution into the polytetrafluoroethylene reaction kettle in the step (2);
(4) introducing nitrogen into the polytetrafluoroethylene inner container, removing oxygen in the liquid, covering the polytetrafluoroethylene inner container with a cover, and reacting at 120 ℃ for 8 hours to obtain the polytetrafluoroethylene inner container.
The applicant has found that the addition of titanium dioxide modified polymethylmethacrylate can improve the heat resistance of the optical fiber. The possible reason is that the hydroxyl on the titanium dioxide interacts with the active group on the polymethyl methacrylate, on one hand, the titanium dioxide is the cross-linking point of the polymethyl methacrylate matrix, and on the other hand, the titanium dioxide limits the movement of the polymethyl methacrylate chain segment, so that the heat resistance of the light guide strip is improved.
In a preferred embodiment, the mass of the n-butyl titanate in the step (2) is 5-15% of the mass sum of the methyl methacrylate and the vinyltrimethoxysilane.
Preferably, the mass of the n-butyl titanate in the step (2) is 11% of the mass sum of the methyl methacrylate and the vinyltrimethoxysilane.
When the ratio of the mass of the n-butyl titanate to the mass sum of the methyl methacrylate and the vinyltrimethoxysilane is less than 5%, the heat resistance of the light guide strip is not obviously improved; when the ratio of the mass of the n-butyl titanate to the mass sum of the methyl methacrylate and the vinyltrimethoxysilane is more than 15%, the generated titanium dioxide can be agglomerated in a polymethyl methacrylate system, and the light transmittance or mechanical property of the system is influenced.
Cladding material
In a preferred embodiment, the clad material is a fluorine-containing resin.
In a preferred embodiment, the fluorine-containing resin is at least one selected from the group consisting of polytetrafluoroethylene, polytetrafluoroethylene-hexafluoropropylene copolymer, and polytetrafluoroethylene-propylene copolymer.
In a preferred embodiment, the fluorine-containing resin is a polytetrafluoroethylene-hexafluoropropylene copolymer.
The polytetrafluoroethylene-hexafluoropropylene copolymer can be made by self or purchased.
The preparation method of the polytetrafluoroethylene-hexafluoropropylene copolymer comprises the steps of firstly adding hexafluoropropylene and tetrafluoroethylene monomers into a reactor according to a certain proportion. During the reaction process, tetrafluoroethylene and an initiator are continuously added into the reactor. The rate of reaction can be controlled by the rate of addition of tetrafluoroethylene, the reaction pressure and the rate of stirring.
The applicant finds that the mass fraction of hexafluoropropylene in the polytetrafluoroethylene-hexafluoropropylene copolymer is 14-25%; as the content of hexafluoropropylene increases, the melting point of the copolymer decreases; when the polytetrafluoroethylene-hexafluoropropylene copolymer melt is slowly cooled to a temperature below the melting point of the crystal, the macromolecule is recrystallized, and the crystallinity is between 50 and 60 percent; when the melt of tetrafluoroethylene-hexafluoropropylene copolymer is rapidly cooled in a quenching manner, the crystallinity is small, between 40 and 50%. The crystal structure forms of the polytetrafluoroethylene-hexafluoropropylene copolymer are all spherulite structures, and have certain differences with different processing and forming temperatures and different heat treatment modes.
In a preferred embodiment, the melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 1-25 g/10 min.
Preferably, the melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 6-16 g/10 min.
Preferably, the polytetrafluoroethylene-hexafluoropropylene copolymer has a melt index of 9g/10 min.
The melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is tested in accordance with ASTM D2116, which refers to the mass of polymer passing through a specified die every 10min at 372 deg.C and 2160g load.
The applicant finds that when the melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 6-16 g/10min, the mechanical property of the light guide strip can be improved. The possible reasons for guessing are: when the melt index is within this range, the distribution of the trifluoromethyl groups in the polytetrafluoroethylene-hexafluoropropylene copolymer is uniform; during crystallization, the trifluoromethyl group enters a crystal region, the integrity of an original crystal lattice is damaged, more defects appear in a system, and a random sheet layer is formed. On one hand, the random sheet layers have more connecting chains, on the other hand, the random sheet layers can slide, and under the condition that the system is stretched, the mechanical property of the system is improved through the double actions of the connecting chains and the sliding of the random sheet layers.
In a preferred embodiment, the outer diameter of the light guide strip is 0.25 to 3 mm.
In a preferred embodiment, the core diameter of the light guide strip is 0.25 to 1 mm.
When the core layer material is titanium dioxide modified polymethyl methacrylate and the melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer in the cladding material is 6-16 g/10min, the weather resistance of the light guide strip can be improved. The possible reasons are that the titanium dioxide modified polymethyl methacrylate is partially compatible with the polytetrafluoroethylene-hexafluoropropylene copolymer and that the active groups on the titanium dioxide interact with the active groups of the polytetrafluoroethylene-hexafluoropropylene copolymer to form an intermediate interface layer; when the light guide strip is at different temperatures to cause deformation of a certain material, stress distribution is continuous due to the effect of the middle interface layer, a material fracture surface develops into silver stripes instead of developing along the interface in the stretching or shrinking process, and finally plastic fracture is generated, so that the weather resistance of the light guide strip is finally improved.
The preparation method of the whole luminous light guide strip comprises the following steps:
(1) melting and plasticizing the core layer material by a core material extruder, feeding the core layer material into a core layer material feeding port, feeding the core layer material into a mold core runner through a core layer material shunting cone runner to form a core, and feeding the core into a molding die port;
(2) and melting and plasticizing the cladding material by a cladding extruder, feeding the cladding material into a cladding material feeding port, feeding the cladding material into a cladding material shunting channel between a die cover and a die core through a cladding material shunting cone channel, feeding the cladding material into a forming die port, coating the cladding material on the periphery of the core, and carrying out traction, rolling, cutting and packaging to obtain the finished product.
The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
In addition, the starting materials used are all commercially available, unless otherwise specified.
Examples
Example 1
The light guide strip capable of emitting light through the whole body comprises a core layer and a cladding layer, wherein the core layer is made of titanium dioxide modified polymethyl methacrylate, and the cladding layer is made of polytetrafluoroethylene-hexafluoropropylene copolymer.
The preparation method of the titanium dioxide modified polymethyl methacrylate comprises the following steps:
(1) weighing 0.7mol of methyl methacrylate, 0.1mol of vinyltrimethoxysilane and 0.05g of azobisisobutyronitrile into a 100mL polytetrafluoroethylene reaction kettle;
(2) weighing a certain amount of n-butyl titanate, and adding the n-butyl titanate into the polytetrafluoroethylene reaction kettle in the step (1);
(3) dissolving 2g of absolute ethyl alcohol and 0.825g of concentrated hydrochloric acid in 40mL of tetrahydrofuran, and pouring the mixed solution into the polytetrafluoroethylene reaction kettle in the step (2);
(4) introducing nitrogen into the polytetrafluoroethylene inner container, removing oxygen in the liquid, covering the polytetrafluoroethylene inner container with a cover, and reacting at 120 ℃ for 8 hours to obtain the polytetrafluoroethylene inner container.
Wherein the mass of the n-butyl titanate in the step (2) is 5% of the mass sum of the methyl methacrylate and the vinyltrimethoxysilane.
The melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 6g/10 min.
The polytetrafluoroethylene-hexafluoropropylene copolymer was purchased from Dajin U.S. model NP-120.
The preparation method of the whole luminous light guide strip comprises the following steps:
(1) melting and plasticizing the core layer material by a core material extruder, feeding the core layer material into a core layer material feeding port, feeding the core layer material into a mold core runner through a core layer material shunting cone runner to form a core, and feeding the core into a molding die port;
(2) and melting and plasticizing the cladding material by a cladding extruder, feeding the cladding material into a cladding material feeding port, feeding the cladding material into a cladding material shunting channel between a die cover and a die core through a cladding material shunting cone channel, feeding the cladding material into a forming die port, coating the cladding material on the periphery of the core, and carrying out traction, rolling, cutting and packaging to obtain the finished product.
The diameter of the fiber core of the prepared light guide strip is 0.5mm, and the outer diameter of the light guide strip is 1 mm.
Example 2
The light guide strip capable of emitting light through the whole body comprises a core layer and a cladding layer, wherein the core layer is made of titanium dioxide modified polymethyl methacrylate, and the cladding layer is made of polytetrafluoroethylene-hexafluoropropylene copolymer.
The preparation method of the titanium dioxide modified polymethyl methacrylate comprises the following steps:
(1) weighing 0.7mol of methyl methacrylate, 0.1mol of vinyltrimethoxysilane and 0.05g of azobisisobutyronitrile into a 100mL polytetrafluoroethylene reaction kettle;
(2) weighing a certain amount of n-butyl titanate, and adding the n-butyl titanate into the polytetrafluoroethylene reaction kettle in the step (1);
(3) dissolving 2g of absolute ethyl alcohol and 0.825g of concentrated hydrochloric acid in 40mL of tetrahydrofuran, and pouring the mixed solution into the polytetrafluoroethylene reaction kettle in the step (2);
(4) introducing nitrogen into the polytetrafluoroethylene inner container, removing oxygen in the liquid, covering the polytetrafluoroethylene inner container with a cover, and reacting at 120 ℃ for 8 hours to obtain the polytetrafluoroethylene inner container.
Wherein the mass of the n-butyl titanate in the step (2) is 15% of the mass sum of the methyl methacrylate and the vinyltrimethoxysilane.
The melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 6g/10 min.
The polytetrafluoroethylene-hexafluoropropylene copolymer was purchased from Dajin U.S. model NP-120.
The preparation method of the whole-body light-emitting light guide strip has the same specific steps as embodiment 1.
Example 3
The light guide strip capable of emitting light through the whole body comprises a core layer and a cladding layer, wherein the core layer is made of titanium dioxide modified polymethyl methacrylate, and the cladding layer is made of polytetrafluoroethylene-hexafluoropropylene copolymer.
The preparation method of the titanium dioxide modified polymethyl methacrylate comprises the following steps:
(1) weighing 0.7mol of methyl methacrylate, 0.1mol of vinyltrimethoxysilane and 0.05g of azobisisobutyronitrile into a 100mL polytetrafluoroethylene reaction kettle;
(2) weighing a certain amount of n-butyl titanate, and adding the n-butyl titanate into the polytetrafluoroethylene reaction kettle in the step (1);
(3) dissolving 2g of absolute ethyl alcohol and 0.825g of concentrated hydrochloric acid in 40mL of tetrahydrofuran, and pouring the mixed solution into the polytetrafluoroethylene reaction kettle in the step (2);
(4) introducing nitrogen into the polytetrafluoroethylene inner container, removing oxygen in the liquid, covering the polytetrafluoroethylene inner container with a cover, and reacting at 120 ℃ for 8 hours to obtain the polytetrafluoroethylene inner container.
Wherein the mass of the n-butyl titanate in the step (2) is 11% of the mass sum of the methyl methacrylate and the vinyltrimethoxysilane.
The melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 6g/10 min.
The polytetrafluoroethylene-hexafluoropropylene copolymer was purchased from Dajin U.S. model NP-120.
The preparation method of the whole-body light-emitting light guide strip has the same specific steps as embodiment 1.
Example 4
The light guide strip capable of emitting light through the whole body comprises a core layer and a cladding layer, wherein the core layer is made of titanium dioxide modified polymethyl methacrylate, and the cladding layer is made of polytetrafluoroethylene-hexafluoropropylene copolymer.
The specific steps of the preparation method of the titanium dioxide modified polymethyl methacrylate are the same as those of the example 3.
The melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 16g/10 min.
The polytetrafluoroethylene-hexafluoropropylene copolymer was purchased from Dajin U.S. model NP-12X.
The preparation method of the whole-body light-emitting light guide strip has the same specific steps as embodiment 1.
Example 5
The light guide strip capable of emitting light through the whole body comprises a core layer and a cladding layer, wherein the core layer is made of titanium dioxide modified polymethyl methacrylate, and the cladding layer is made of polytetrafluoroethylene-hexafluoropropylene copolymer.
The specific steps of the preparation method of the titanium dioxide modified polymethyl methacrylate are the same as those of the example 3.
The melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 9g/10 min.
The polytetrafluoroethylene-hexafluoropropylene copolymer was purchased from Dajin U.S. model NP-112.
The preparation method of the whole-body light-emitting light guide strip has the same specific steps as embodiment 1.
Example 6
The light guide strip capable of emitting light through the whole body comprises a core layer and a cladding layer, wherein the core layer is made of polymethyl methacrylate, and the cladding layer is made of polytetrafluoroethylene-hexafluoropropylene copolymer.
The polymethylmethacrylate was purchased from dell, germany with a model number of 5003.
The melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 9g/10 min.
The polytetrafluoroethylene-hexafluoropropylene copolymer was purchased from Dajin U.S. model NP-112.
The preparation method of the whole-body light-emitting light guide strip has the same specific steps as embodiment 1.
Example 7
The light guide strip capable of emitting light through the whole body comprises a core layer and a cladding layer, wherein the core layer is made of titanium dioxide modified polymethyl methacrylate, and the cladding layer is made of polytetrafluoroethylene-hexafluoropropylene copolymer.
The specific steps of the preparation method of the titanium dioxide modified polymethyl methacrylate are the same as those of the example 5, and the difference is that the mass of the n-butyl titanate is 1 percent of the mass sum of the methyl methacrylate and the vinyltrimethoxysilane.
The melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 9g/10 min.
The polytetrafluoroethylene-hexafluoropropylene copolymer was purchased from Dajin U.S. model NP-112.
The preparation method of the whole-body light-emitting light guide strip has the same specific steps as embodiment 1.
Example 8
The light guide strip capable of emitting light through the whole body comprises a core layer and a cladding layer, wherein the core layer is made of titanium dioxide modified polymethyl methacrylate, and the cladding layer is made of polytetrafluoroethylene-hexafluoropropylene copolymer.
The specific steps of the preparation method of the titanium dioxide modified polymethyl methacrylate are the same as those of the example 5, and the difference is that the mass of the n-butyl titanate is 20% of the mass sum of the methyl methacrylate and the vinyltrimethoxysilane.
The melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 9g/10 min.
The polytetrafluoroethylene-hexafluoropropylene copolymer was purchased from Dajin U.S. model NP-112.
The preparation method of the whole-body light-emitting light guide strip has the same specific steps as embodiment 1.
Example 9
The light guide strip capable of emitting light through the whole body comprises a core layer and a cladding layer, wherein the core layer is made of titanium dioxide modified polymethyl methacrylate, and the cladding layer is made of teflon.
The specific steps of the preparation method of the titanium dioxide modified polymethyl methacrylate are the same as those of the example 5.
The Teflon was purchased from DuPont, USA, model TeFlon AF 2400.
The preparation method of the whole-body light-emitting light guide strip has the same specific steps as embodiment 1.
Example 10
The light guide strip capable of emitting light through the whole body comprises a core layer and a cladding layer, wherein the core layer is made of titanium dioxide modified polymethyl methacrylate, and the cladding layer is made of polytetrafluoroethylene-hexafluoropropylene copolymer.
The specific steps of the preparation method of the titanium dioxide modified polymethyl methacrylate are the same as those of the example 5.
The melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 30g/10 min.
The polytetrafluoroethylene-hexafluoropropylene copolymer was purchased from U.S. Kemu, model 9819 FL.
The preparation method of the whole-body light-emitting light guide strip has the same specific steps as embodiment 1.
Example 11
The light guide strip capable of emitting light through the whole body comprises a core layer and a cladding layer, wherein the core layer is made of titanium dioxide modified polymethyl methacrylate, and the cladding layer is made of polytetrafluoroethylene-hexafluoropropylene copolymer.
The specific steps of the preparation method of the titanium dioxide modified polymethyl methacrylate are the same as those of the example 5.
The melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 1g/10 min.
The polytetrafluoroethylene-hexafluoropropylene copolymer was purchased from U.S. 3M, model 6301Z.
The preparation method of the whole-body light-emitting light guide strip has the same specific steps as embodiment 1.
Performance testing
The light guide bars of the examples were subjected to performance tests, and the results are as follows.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may modify or change the technical content of the above disclosure into equivalent embodiments with equivalent changes, but all those simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the present invention.
Claims (5)
1. The light guide strip capable of emitting light through the whole body is characterized by comprising a core layer and a cladding layer, wherein the core layer is made of at least one of modified polymethyl methacrylate; the modified polymethyl methacrylate is titanium dioxide modified polymethyl methacrylate;
the cladding material is fluorine-containing resin, and the fluorine-containing resin is polytetrafluoroethylene-hexafluoropropylene copolymer.
2. The light guide strip according to claim 1, wherein the melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 1 to 25g/10 min.
3. The light guide strip according to claim 2, wherein the melt index of the polytetrafluoroethylene-hexafluoropropylene copolymer is 6 to 16g/10 min.
4. The light guide strip of claim 1, wherein the outer diameter of the light guide strip is 0.25 to 3 mm.
5. The method for preparing the whole light-emitting light guide strip according to any one of claims 1 to 4, comprising the following steps:
(1) melting and plasticizing the core layer material by a core material extruder, feeding the core layer material into a core layer material feeding port, feeding the core layer material into a mold core runner through a core layer material shunting cone runner to form a core, and feeding the core into a molding die port;
(2) and melting and plasticizing the cladding material by a cladding extruder, feeding the cladding material into a cladding material feeding port, feeding the cladding material into a cladding material shunting channel between a die cover and a die core through a cladding material shunting cone channel, feeding the cladding material into a forming die port, coating the cladding material on the periphery of the core, and carrying out traction, rolling, cutting and packaging to obtain the finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910144332.XA CN109669234B (en) | 2019-02-27 | 2019-02-27 | Light guide strip capable of emitting light on whole body and preparation method thereof |
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| CN201910144332.XA CN109669234B (en) | 2019-02-27 | 2019-02-27 | Light guide strip capable of emitting light on whole body and preparation method thereof |
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| CN109669234A CN109669234A (en) | 2019-04-23 |
| CN109669234B true CN109669234B (en) | 2020-11-03 |
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