JPWO2019124078A1 - 希土類リン酸塩粒子、それを用いた光散乱性向上方法、並びにそれを含む光散乱部材及び光学デバイス - Google Patents
希土類リン酸塩粒子、それを用いた光散乱性向上方法、並びにそれを含む光散乱部材及び光学デバイス Download PDFInfo
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- JPWO2019124078A1 JPWO2019124078A1 JP2019560943A JP2019560943A JPWO2019124078A1 JP WO2019124078 A1 JPWO2019124078 A1 JP WO2019124078A1 JP 2019560943 A JP2019560943 A JP 2019560943A JP 2019560943 A JP2019560943 A JP 2019560943A JP WO2019124078 A1 JPWO2019124078 A1 JP WO2019124078A1
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- rare earth
- light scattering
- phosphate particles
- earth phosphate
- phosphate
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- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- QCTJRYGLPAFRMS-UHFFFAOYSA-N prop-2-enoic acid;1,3,5-triazine-2,4,6-triamine Chemical compound OC(=O)C=C.NC1=NC(N)=NC(N)=N1 QCTJRYGLPAFRMS-UHFFFAOYSA-N 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
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- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
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- 125000001424 substituent group Chemical group 0.000 description 1
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- 125000000101 thioether group Chemical group 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
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- Inorganic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Dispersion Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Optical Elements Other Than Lenses (AREA)
- Luminescent Compositions (AREA)
- Glass Compositions (AREA)
Abstract
Description
樹脂組成物の形態に特に制限はなく、シート(フィルム)、膜、粉末、ペレット(マスターバッチ)、塗布液(塗料)等が挙げられるが、シートの形態であると、光散乱シートへの適用を容易に行えることから有利である。
本発明の希土類リン酸塩粒子の添加の対象となる樹脂の種類に特に制限はなく、成形可能な熱可塑性樹脂、熱硬化性樹脂及び電離放射線硬化性樹脂を用いることができる。特に、シートの形態への成形が容易である点から、熱可塑性樹脂を用いることが好ましい。
5≦(T×C)≦500・・・(I)
なお、光散乱層の厚みとは、前記樹脂組成物から構成される光散乱シート(シート状の光散乱部材)の場合、シートの厚みをいい、基材と前記樹脂組成物から構成される表面コート層とからなる光散乱部材の場合、表面コート層の厚みをいう。TとCは、下記数式(II)を満たすことがより好ましい。
50≦(T×C)≦200・・・(II)
ガラス容器1に水600gを計量し、60%硝酸(和光純薬工業社製)61.7g、Y2O3(日本イットリウム社製)16.6g及びGd2O3(日本イットリウム社製)3.0gを添加し、80℃に加温して溶解させた。YとGdとのモル比は、Y:Gd=4:1であった。別のガラス容器2に水600gを計量し、85%リン酸18.8gを添加した。
ガラス容器1へガラス容器2の内容物を添加し、1時間エージングを行った。得られた沈殿物をデカンテーション洗浄により、上澄みの導電率が100μS/cm以下になるまで洗浄を行った。洗浄後、減圧濾過で固液分離し、大気中で120℃×5時間乾燥させたのち、大気中で900℃×3時間焼成し、希土類リン酸塩粒子を得た。
YとGdとのモル比を表1に示す値とする以外は実施例1と同様にして希土類リン酸塩粒子を得た。
実施例1において、希土類元素A及び希土類元素Bとして、表1に示す希土類元素を用いた。また元素Aと元素Bとのモル比を同表に示す値とした。これら以外は実施例1と同様にして希土類リン酸塩粒子を得た。
実施例1において、Gd2O3を用いず、Y2O3を26.6g用いた。また、焼成を450℃×3時間とした。これら以外は実施例1と同様にして希土類リン酸塩粒子を得た。
実施例及び参考例で得られた希土類リン酸塩粒子について、結晶構造、BET比表面積、D50及びD99、並びに希土類元素Aのリン酸塩を基準とする最高強度のピーク位置のシフト量を測定した。また、以下の方法で光散乱シートを製造し、その全光線透過率、ヘイズ及び輝度を測定した。それらの結果を以下の表1に示す。また、実施例1ないし6の希土類リン酸塩粒子について測定された粉末X線回折測定の結果を図2に示す。X線回折測定には以下に説明する機器を用いた。
実施例及び参考例で得られた希土類リン酸塩粒子をホルダーに装着し、RINT−TTRIII(リガク社製)を使用し、下記条件で回折線の角度と強度を測定し、回折パターンを得た。
(管球)CuKα線
(管電圧)50kV
(管電流)300mA
(サンプリング間隔)0.02°
(スキャンスピード)4.0°/min
(開始角度)20°
(終了角度)80°
シフト量を測定するときに基準となるピーク位置(2θ)は、ICSD(International Crystal Structure Database)に収録されているYPO4,GdPO4及びLaPO4のデータを使用した。
樹脂としてポリカーボネート樹脂を用いた。この樹脂と希土類リン酸塩粒子とを予備混合した後、押し出し成形によって100mm×100mm×厚み1mmの光散乱シートを製造した。得られる光散乱シートのヘイズ値が略一定となるように、樹脂に対する希土類リン酸塩粒子の配合割合を適宜調整した。その配合割合は表1に示すとおりとした。得られた光散乱シートの全光線透過率及びヘイズ値をヘイズメータ(日本電色工業株式会社製、NDH2000)で測定した。
図1(a)に示すとおり、全光線透過率の測定に用いた光散乱シート10を鉛直面V内に配置した。短焦点プロジェクタを光源12に用い、光散乱シート10に光を照射した。光は、光散乱シート10の下方から上方に向けて、鉛直面Vに対して45度の角度で照射した。光散乱シート10における光の照射面とは反対側の投影面11側に輝度計13を設置し、光散乱シート10が発光している輝度を測定した。輝度計13は、図1(b)に示すとおり、光散乱シート10を横切り、且つ水平面と平行な線Hに対して45度の角度をなす位置に設置した。そして、各実施例の希土類リン酸塩粒子を用いた光散乱シートの輝度の値を、参考例1の希土類リン酸塩粒子を用いた光散乱シートの輝度の値で除することにより、輝度比(〔各実施例の希土類リン酸塩粒子を用いた光散乱シートの輝度〕/〔参考例1の希土類リン酸塩粒子を用いた光散乱シートの輝度〕)を算出した。
Claims (14)
- 希土類元素A(AはSc、Y、La、Eu、Gd、Dy、Yb又はLuを表す。)と、該元素Aとは異なる希土類元素B(BはSc、Y、La、Eu、Gd、Dy、Yb又はLuを表す。)とを含む希土類リン酸塩粒子。
- 前記元素Aのリン酸塩は結晶質であるとともに、前記元素Aのリン酸塩に前記元素Bの少なくとも一部が固溶しているものである請求項1に記載の希土類リン酸塩粒子。
- 前記元素Aのリン酸塩の結晶構造がゼノタイム構造又はモナザイト構造である請求項2に記載の希土類リン酸塩粒子。
- XRDで測定される回折パターンにおいて、
前記希土類リン酸塩粒子は、それに由来する最高強度のピーク位置(2θ)が、前記元素Aのみを含むリン酸塩に由来する最高強度のピーク位置(2θ)を基準に、0.01度以上0.70度以下の範囲で低角度側又は高角度側にシフトしている請求項3に記載の希土類リン酸塩粒子。 - 前記元素Bの含有量が、前記元素Aと前記元素Bのモル数の合計に対して0.1モル%以上50モル%以下である請求項1ないし4のいずれか一項に記載の希土類リン酸塩粒子。
- 前記元素AがY、Gd又はLaである請求項1ないし5のいずれか一項に記載の希土類リン酸塩粒子。
- 基材の内部又は表面に配置されて光散乱を生じさせるために用いられるものである請求項1ないし6のいずれか一項に記載の希土類リン酸塩粒子。
- 請求項1ないし7のいずれか一項に記載の希土類リン酸塩粒子を基材に添加して、該基材の光散乱性を向上させる光散乱性向上方法。
- 請求項1ないし7のいずれか一項に記載の希土類リン酸塩粒子を基材の表面に配置して、該基材の光散乱性を向上させる光散乱性向上方法。
- 請求項1ないし7のいずれか一項に記載の希土類リン酸塩粒子及び有機溶媒を含む分散液。
- 請求項1ないし7のいずれか一項に記載の希土類リン酸塩粒子及び樹脂を含む樹脂組成物。
- 請求項11に記載の樹脂組成物から構成される光散乱部材。
- 前記光散乱部材は請求項11に記載の樹脂組成物から構成される光散乱層を含んでなり、前記光散乱層の厚さをT(μm)とし、前記光散乱層中の希土類リン酸塩粒子の濃度をC(質量%)としたとき、TとCが、下記数式(I)を満たすことを特徴とする請求項12に記載の光散乱部材。
5≦(T×C)≦500・・・(I) - 請求項12又は13に記載の光散乱部材を備えた光学デバイス。
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CN111433152A (zh) | 2020-07-17 |
JP7050814B2 (ja) | 2022-04-08 |
KR102659182B1 (ko) | 2024-04-22 |
US20210188640A1 (en) | 2021-06-24 |
WO2019124078A1 (ja) | 2019-06-27 |
TW201930185A (zh) | 2019-08-01 |
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