KR20130066826A - Polycabonate light diffusion resin composition and polycabonate resin molded articles comprising the same - Google Patents

Polycabonate light diffusion resin composition and polycabonate resin molded articles comprising the same Download PDF

Info

Publication number
KR20130066826A
KR20130066826A KR1020110133512A KR20110133512A KR20130066826A KR 20130066826 A KR20130066826 A KR 20130066826A KR 1020110133512 A KR1020110133512 A KR 1020110133512A KR 20110133512 A KR20110133512 A KR 20110133512A KR 20130066826 A KR20130066826 A KR 20130066826A
Authority
KR
South Korea
Prior art keywords
diffusing agent
bead
light diffusing
resin composition
polycarbonate
Prior art date
Application number
KR1020110133512A
Other languages
Korean (ko)
Inventor
김영일
박은하
Original Assignee
코오롱플라스틱 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 코오롱플라스틱 주식회사 filed Critical 코오롱플라스틱 주식회사
Priority to KR1020110133512A priority Critical patent/KR20130066826A/en
Publication of KR20130066826A publication Critical patent/KR20130066826A/en

Links

Images

Classifications

    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/15—Heterocyclic compounds having oxygen in the ring
    • C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
    • C08K5/1535—Five-membered rings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions 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; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/10—Homopolymers or copolymers of methacrylic acid esters
    • C08L33/12—Homopolymers or copolymers of methyl methacrylate
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions 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; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • 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
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: A polycarbonate resin composition is provided to have high haze and total ray transmittance while maintaining excellent impact strength and to be easily molded by a cover. CONSTITUTION: A polycarbonate resin composition comprises 100.0 parts by weight of a polycarbonate resin, 0.01-3 parts by weight of a silicone-based bead-shaped light diffusing agent, and 0.05-5 parts by weight of an acrylic bead-shaped light-diffusing agent. The silicon-based light-diffusing agent is a bead-shaped light diffusing agent manufactured by a polymethylsilsesquioxane or silicon resin. The acrylic light-diffusing agent is a bead-shaped light diffusing agent manufactured by polymethylmethacrylate or a methylmethacrylate-styrene copolymer.

Description

POLYCABONATE LIGHT DIFFUSION RESIN COMPOSITION AND POLYCABONATE RESIN MOLDED ARTICLES COMPRISING THE SAME

The present invention relates to a polycarbonate light diffusion resin composition and a polycarbonate resin molded article including the same.

Polycarbonate resin is one of the commercially widely used transparent plastics, and is widely used for glass replacement plastics, containers, automobile lamp covers, etc. by injection molding or extrusion molding. Among these optical uses, physical properties required for application as basic materials such as indoor and outdoor lighting, automobile interior and exterior lighting, and building interior are high haze and total light transmittance.

When the haze is low, the internal structure of the product is visible, and it can be called an important property when used as a lighting cover because it can cause glare to the user.

In addition, when the light diffusion resin cover with low total light transmittance is applied, the lighting efficiency becomes dark, and the total light transmittance is an important property because there is a limit to increase the number of light sources or to use high luminance light to solve this problem.

Therefore, there is a demand for a technology development capable of achieving high total light transmittance and high haze without reducing the inherent high impact strength of the polycarbonate resin.

The present invention is to provide a polycarbonate resin composition having a high total light transmittance and haze while maintaining excellent impact strength.

The present invention also provides a polycarbonate resin molded article comprising a polycarbonate resin composition having high total light transmittance and haze while maintaining excellent impact strength.

Accordingly, the present invention provides a preferred first embodiment, 100 parts by weight of polycarbonate resin; 0.01 to 3 parts by weight of a silicon bead-like light diffusing agent based on 100 parts by weight of the polycarbonate resin; And it provides a polycarbonate light diffusion resin composition comprising 0.05 to 5 parts by weight of the acrylic bead-like light diffusing agent.

The silicon-based bead light diffusing agent according to the embodiment may be a bead light diffusing agent made of polymethylsilsesquioxane or silicone resin.

The acrylic bead light diffusing agent according to the embodiment may be a bead light diffusing agent made of polymethyl methacrylate or methyl methacrylate-styrene copolymer.

Silicon-based bead-like light diffusing agent according to the embodiment may be one having an average particle diameter of 0.1 ~ 10 ㎛.

Acrylic bead-like light diffusing agent according to the embodiment may be one having an average particle diameter of 1 ~ 50 ㎛.

The polycarbonate light diffusion resin composition according to the embodiment may further include a fluorescent brightener.

The fluorescent brighteners are benzotriazole-phenylcoumarins, bis-benzoxazoles, triazine-phenylcoumarins, bis- (styryl) ratios. It may be at least one selected from the group consisting of phenyl-based (bis- (styryl) biphenyls), and naphtotriazole-phenylcoumarins compounds.

In addition, the present invention provides a polycarbonate resin molded article comprising the polycarbonate resin composition as a second preferred embodiment.

Since the polycarbonate resin composition according to the present invention has high haze and total light transmittance while maintaining excellent impact strength, the polycarbonate resin composition can be easily molded into a cover such as a lamp, an automobile interior and exterior, and a building interior by injection molding or extrusion molding, These molded articles can exhibit an effect of minimizing the generation of point light source and excellent impact strength.

1 is a perspective view of a diffusion member of the present invention evaluated for the presence of a point light ray.
≪ Brief Description of Drawings &
a: LED element
b: substrate
c: shading plate
d: test piece
e: LED module

Hereinafter, the present invention will be described in detail.

The present invention is 100 parts by weight of polycarbonate resin; 0.01 to 3 parts by weight of a silicon bead-like light diffusing agent based on 100 parts by weight of the polycarbonate resin; And it is related with the polycarbonate light-diffusion resin composition containing 0.05-5 weight part of acrylic bead-like light-diffusion agents. Specifically, a polycarbonate light diffusing resin composition prepared by using a polycarbonate resin as a matrix and using a silicon bead light diffusing agent and an acrylic bead light diffusing agent, and the molded product retains the inherent mechanical properties of the polycarbonate resin. The present invention relates to a polycarbonate light diffusion resin composition capable of improving haze and preventing generation of point light sources.

The silicone-based bead-based light diffusing agent used in the present invention is effective in improving haze, and its content may be 0.01 to 3 parts by weight, preferably 0.05 to 2 parts by weight, based on 100 parts by weight of the polycarbonate resin. If the content of the light-diffusing agent on the silicon-based bead is less than 0.01 parts by weight, a haze may be low to generate a point light source, and if it exceeds 3 parts by weight, the total light transmittance may be lowered.

The silicon bead light diffusing agent may be a bead light diffusing agent made of polymethylsilsesquioxane or silicone resin.

The silicon-based bead-based light-diffusing agent may have an average particle diameter of 0.1 to 10 탆, preferably 1 to 5 탆. When the average particle diameter is less than 0.1 탆, a high haze can not be exhibited. The mechanical properties such as mechanical strength and the like deteriorate.

The acrylic bead-based light diffusing agent used in the present invention is effective for preventing the generation of a point light source, and its content may be 0.05 to 5 parts by weight, preferably 0.1 to 3 parts by weight based on 100 parts by weight of the polycarbonate resin. If the content of the acryl-based bead-based light diffusing agent is less than 0.05 part by weight, a haze may be low to generate a point light source, and if it exceeds 3 parts by weight, the total light transmittance may be low.

The acrylic bead light diffusing agent may be a bead light diffusing agent made of a polymethyl methacrylate or a methyl methacrylate-styrene copolymer.

The acrylic bead-based light diffusing agent may have an average particle diameter of 1 to 50 탆, preferably 3 to 30 탆. When the average particle diameter is less than 1 탆, the acryl-based bead-based light diffusing agent is decomposed at the time of injection molding or extrusion molding, The surface is roughened, and surface unevenness occurs due to scratches in the die portion when extruded.

On the other hand, the polycarbonate resin composition of the present invention may further comprise a fluorescent brightener to improve the whiteness.

The fluorescent whitening agent may be selected from the group consisting of benzotriazole-phenylcoumarins, bis-benzoxazoles, triazine-phenylcoumarins, bis (styryl) (Styryl) biphenyls, naphthotriazole-phenylcoumarins, and the like. The content of the at least one compound is 0.005 to 0.005 parts by weight based on 100 parts by weight of the polycarbonate resin, If the amount is less than 0.005 parts by weight, the effect of improving whiteness is not expected. If the amount is more than 2 parts by weight, the total light transmittance is deteriorated.

The present invention also relates to a polycarbonate resin molded article comprising the polycarbonate resin composition as described above, and the polycarbonate resin molded article may be a cover of a lighting lamp, an interior and exterior lighting of an automobile, and an interior of a building.

Since the polycarbonate resin molded article does not show high point light rays and thus prevents glare, the polycarbonate resin molded article exhibits excellent sensitivity and high light efficiency.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the scope of the present invention is not limited to the following examples.

Examples 1-6 and Comparative Examples 1-4

Polymethylsilsesquioxane bead light diffusing agent (Kolon Co., Ltd., trade name: Diasphere KS-200) having a composition as shown in Table 1 below, having an average particle diameter of 2 μm, and polymethylmethacryl having an average particle diameter of 5 μm PMMA bead phase light diffusing agent (Kolon Co., Ltd., trade name: Diasphere MH-5FD) and fluorescent whitening agent (Clariant, Hostalux KSp) were respectively applied to the hopper of a twin-screw extruder with a vacuum vent using a metering device. It was added and uniformly dispersed through melt kneading. The kneaded melt was cooled while passing through a water bath and cut to prepare a polycarbonate light diffusing resin composition in pellet form.

division Polycarbonate resin Polymethylsilsesquioxane
Bead Light Diffusers Polymethylmethacrylate Bead Phase Light Diffuser Neon
Brighteners Content (parts by weight) Average particle size (μm) Content (parts by weight) Average particle size (μm) Content (parts by weight) Content (parts by weight) Example 1 100 2 0.01 5 3 0.005 Example 2 100 2 1.3 5 0.1 0.01 Example 3 100 2 0.3 5 0.5 0.02 Example 4 100 2 0.4 5 0.4 0.05 Example 5 100 2 1.1 5 0.1 0.1 Example 6 100 2 0.3 5 0.6 One Comparative Example 1 100 2 0.3 - 0 0.01 Comparative Example 2 100 2 2 - 0 0.01 Comparative Example 3 100 2 3 5 6 3 Comparative Example 4 100 - 0 5 0.3 0.01

After drying the prepared pellets at 120 ° C. for 4 hours or more in a dehumidifying dryer, a test piece of 50.0 mm x 50.0 mm x 1.0 mm was manufactured using a single screw injection machine. The presence or absence of light was measured and the results are shown in Table 2.

Total light transmittance

Total light transmittance was measured by the ISO 13468 method.

Hayes

Haze was measured by the ISO 14782 method.

Impact strength

Impact strength was measured by the method of ASTM D 256.

Presence of point light

After turning on the LED device by using the diffusion member as shown in FIG. 1, the presence or absence of the point light ray was visually observed.

X: No point light source generated, observed as a surface light source.

O: Point light source generation

Total light transmittance (%) Haze (%) Impact strength
(kg x cm / cm) Presence of point light Example 1 70.59 99.31 56.6 X Example 2 54.67 99.37 82.3 X Example 3 75.49 99.01 82.3 X Example 4 72.34 99.21 83.4 X Example 5 54.7 99.37 78.4 X Example 6 71.23 99.23 82.4 X Comparative Example 1 78.98 97.71 83.6 O Comparative Example 2 43.7 99.52 81.4 X Comparative Example 3 21.4 99.58 22.4 X Comparative Example 4 90.5 42.5 86.7 O

 As shown in Table 2, the polycarbonate light-diffusion resin composition of Examples 1 to 6 according to the present invention is a polymethylsilsesquioxane bead phase light diffusing agent and polymethyl methacrylate using polycarbonate resin as a base resin. It was confirmed that the bead phase light diffusing agent and the fluorescent brightener were included in the optimum ranges, thereby achieving excellent haze and total light transmittance, as well as an image improvement through excellent impact strength and prevention of point light generation.

Particularly, in Examples 1 to 6, it was confirmed that it had a good total light transmittance of 50% or more and a good haze of 99% or more, and at the same time, showed an excellent impact strength. I could confirm

On the other hand, in the case of Comparative Examples 1 to 4 it was confirmed that the total light transmittance, haze, impact strength and point light beam improvement can not be satisfied at the same time. In particular, in the case of Comparative Example 1, the excellent light transmittance showed excellent results, but the point light was visually confirmed by the haze of 99% or less, which may cause a problem that the optimum emotional quality could not be exhibited when mounted to the lighting equipment. have. In Comparative Examples 2 to 3, bead light diffusing agents containing polymethylsilsesquioxane as a main component. Since the content of the bead-like light diffusing agent and the fluorescent brightener mainly composed of polymethyl methacrylate is not optimized, the total light transmittance is remarkably decreased, so that the light emitted from the LED element can be efficiently transmitted when mounted as a diffuser plate of a lighting fixture. This can cause fatal defects that significantly reduce the efficiency of the final luminaire. In Comparative Example 4, a bead light diffusing agent mainly composed of polymethylsilsesquioxane. As the content of bead light diffusing agent and fluorescence brightener containing polymethyl methacrylate as the main component is not optimized, the haze is markedly lowered, causing a problem of showing point light rays. It can lead to problems that cannot be done.

As described above, the polycarbonate light-diffusion resin composition of Examples 1 to 6 is excellent in total light transmittance, impact strength, haze and point light hiding power due to high haze, so that it is very useful for lighting fixtures, lighting lamps, sign lamps, interior of buildings, etc. Can be.

Claims (8)

100 parts by weight of polycarbonate resin;
0.01 to 3 parts by weight of a silicon bead-like light diffusing agent based on 100 parts by weight of the polycarbonate resin; And
Polycarbonate light-diffusion resin composition comprising 0.05 to 5 parts by weight of an acrylic bead-like light diffusing agent. The method of claim 1,
Said silicon-based bead light diffusing agent is a bead light diffusing agent made of polymethylsilsesquioxane or silicone resin. The method of claim 1,
The acrylic bead light diffusing agent is a polycarbonate light diffusing resin composition, characterized in that the bead light diffusing agent made of polymethyl methacrylate or methyl methacrylate-styrene copolymer. The method of claim 1,
The silicon-based bead-like light diffusing agent is a polycarbonate light diffusion resin composition, characterized in that the average particle diameter of 0.1 ~ 10 ㎛. The method of claim 1,
The acrylic bead light diffusing agent is a polycarbonate light diffusing resin composition, characterized in that the average particle diameter of 1 to 50 ㎛. The method of claim 1,
A polycarbonate light diffusing resin composition, further comprising a fluorescent brightener. The method according to claim 6,
The fluorescent brighteners are benzotriazole-phenylcoumarins, bis-benzoxazoles, triazine-phenylcoumarins, bis- (styryl) ratios. A polycarbonate light-diffusion resin composition, characterized in that at least one selected from the group consisting of phenyl-based (bis- (styryl) biphenyls) and naphtotriazole-phenylcoumarins compounds. The polycarbonate resin molded article containing the polycarbonate resin composition of any one of Claims 1-7.
KR1020110133512A 2011-12-13 2011-12-13 Polycabonate light diffusion resin composition and polycabonate resin molded articles comprising the same KR20130066826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110133512A KR20130066826A (en) 2011-12-13 2011-12-13 Polycabonate light diffusion resin composition and polycabonate resin molded articles comprising the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110133512A KR20130066826A (en) 2011-12-13 2011-12-13 Polycabonate light diffusion resin composition and polycabonate resin molded articles comprising the same

Publications (1)

Publication Number Publication Date
KR20130066826A true KR20130066826A (en) 2013-06-21

Family

ID=48862872

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110133512A KR20130066826A (en) 2011-12-13 2011-12-13 Polycabonate light diffusion resin composition and polycabonate resin molded articles comprising the same

Country Status (1)

Country Link
KR (1) KR20130066826A (en)

Similar Documents

Publication Publication Date Title
KR102035546B1 (en) A light diffusing polymer composition, method of producing the same, and articles made therefrom
US20150267891A1 (en) Optical light diffuser and method for measurement thereof
US10732330B2 (en) High efficiency diffusion lighting coverings
KR101219602B1 (en) Polypropylene-based resin composition for a light diffusion plate, a light diffusion plate containing the same and manufacturing method thereof
US9547108B2 (en) Optical diffusion blend materials for LED lighting
US9557445B2 (en) Optical diffusion blend materials for LED lighting
KR101372295B1 (en) Light diffusing polystyrene resin composition and monolayer light diffusing sheet containing the same
TWI225878B (en) Light diffusion resin composition
KR20190038866A (en) (Meth) acrylic composition containing particles, a method for producing the same, a use thereof, and objects containing the same
KR20160083364A (en) Rough surface light diffusion polycabonate resin composition and polycabonate resin molded articles comprising the same
US10345493B2 (en) Optical diffusion blend materials for LED lighting
KR20130066826A (en) Polycabonate light diffusion resin composition and polycabonate resin molded articles comprising the same
KR20140092470A (en) Polycabonate resin composition and polycabonate resin molded articles comprising the same
KR101952833B1 (en) Polystyrene-based high-luminance light diffusing monolayer sheet having improved light-shielding effect
KR20150076588A (en) Polycabonate resin composition and polycabonate resin molded articles comprising the same
KR101331348B1 (en) Light diffusion polycarbonate resin comprsing high­density polyolefine system
KR20100103016A (en) Tubular diffusive cover for led illumination and led illuminating lamp comprising the same
US11719411B2 (en) High efficiency diffusion lighting coverings
KR20130067154A (en) Polycabonate light diffusion resin composition and polycabonate resin molded articles comprising the same
KR101479169B1 (en) Polypropylene-based light diffusion resin composition for LED and light diffusion plate
KR20120129006A (en) Polymethyl Methacrylate Resin Compositions with enhanced light diffusion
KR102125497B1 (en) Light-diffusion and anti-glare properties-integrated monolayer sheet and method for manufacturing the same
KR100515451B1 (en) Light Diffusion Resin Composition
KR20130067150A (en) Polycabonate light diffusion resin composition and polycabonate resin molded articles comprising the same
KR101980734B1 (en) Fluorescent light diffusion mono-layer sheet for blue LED and manufacturing method thereof

Legal Events

Date Code Title Description
A201 Request for examination
E601 Decision to refuse application