JP6665399B2 - 酸化亜鉛粒子及びその製造方法並びにその用途 - Google Patents
酸化亜鉛粒子及びその製造方法並びにその用途 Download PDFInfo
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- JP6665399B2 JP6665399B2 JP2016026350A JP2016026350A JP6665399B2 JP 6665399 B2 JP6665399 B2 JP 6665399B2 JP 2016026350 A JP2016026350 A JP 2016026350A JP 2016026350 A JP2016026350 A JP 2016026350A JP 6665399 B2 JP6665399 B2 JP 6665399B2
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- zinc oxide
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
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- 235000010755 mineral Nutrition 0.000 description 1
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- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate group Chemical group [N+](=O)([O-])[O-] NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
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- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
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- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
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- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
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- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
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- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
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- 239000004926 polymethyl methacrylate Substances 0.000 description 1
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- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
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- DQAKJEWZWDQURW-UHFFFAOYSA-N pyrrolidonecarboxylic acid Chemical class OC(=O)N1CCCC1=O DQAKJEWZWDQURW-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- TXDNPSYEJHXKMK-UHFFFAOYSA-N sulfanylsilane Chemical compound S[SiH3] TXDNPSYEJHXKMK-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate group Chemical group S(=O)(=O)([O-])[O-] QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 230000000475 sunscreen effect Effects 0.000 description 1
- 239000000516 sunscreening agent Substances 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- JUWGUJSXVOBPHP-UHFFFAOYSA-B titanium(4+);tetraphosphate Chemical compound [Ti+4].[Ti+4].[Ti+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O JUWGUJSXVOBPHP-UHFFFAOYSA-B 0.000 description 1
- HMXCZSOLWMJNGA-UHFFFAOYSA-N titanium(4+);tetraphosphite Chemical compound [Ti+4].[Ti+4].[Ti+4].[O-]P([O-])[O-].[O-]P([O-])[O-].[O-]P([O-])[O-].[O-]P([O-])[O-] HMXCZSOLWMJNGA-UHFFFAOYSA-N 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical compound [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 239000007762 w/o emulsion Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- 239000004246 zinc acetate Substances 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 1
- 229940007718 zinc hydroxide Drugs 0.000 description 1
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- RZLVQBNCHSJZPX-UHFFFAOYSA-L zinc sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Zn+2].[O-]S([O-])(=O)=O RZLVQBNCHSJZPX-UHFFFAOYSA-L 0.000 description 1
- 150000003755 zirconium compounds Chemical class 0.000 description 1
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- Cosmetics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Compositions Of Macromolecular Compounds (AREA)
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Description
(1)多面体形状であって、多面体を構成する隣接する面同士の稜線及び頂点に相当する部分が曲面で構成されている角丸多面体形状酸化亜鉛粒子である。
平均わたり径=Σ(Ln・n)/Σn
平均高さ=Σ(Hn・n)/Σn
上記式中、nは計測した個々の粒子の番号を表し、Lnは第n番目の粒子のわたり径、Hnは第n番目の粒子の高さをそれぞれ表す。
(2)有機金属化合物((a)有機チタニウム化合物(アミノアルコキシチタニウム、リン酸エステルチタニウム、カルボン酸エステルチタニウム、スルホン酸エステルチタニウム、チタニウムキレート、亜リン酸エステルチタニウム錯体等)、(b)有機アルミニウム化合物(アルミニウムキレート等)、(c)有機ジルコニウム化合物(カルボン酸エステルジルコニウム、ジルコニウムキレート等)等)、
(3)ポリオール類(トリメチロールプロパン、トリメチロールエタン、ペンタエリスリトール等)、
(4)アルカノールアミン類(モノエタノールアミン、ジエタノールアミン、トリエタノールアミン、モノプロパノールアミン、ジプロパノールアミン、トリプロパノールアミン等)又はその誘導体(酢酸塩、シュウ酸塩、酒石酸塩、ギ酸塩、安息香酸塩等の有機酸塩等)、
(5)高級脂肪酸類(ステアリン酸、ラウリン酸、オレイン酸等)又はその金属塩(アルミニウム塩、亜鉛塩、マグネシウム塩、カルシウム塩、バリウム塩等)、
(6)高級炭化水素類(パラフィンワックス、ポリエチレンワックス等)又はその誘導体(パーフルオロ化物等)が挙げられる。これらの有機化合物は1種を用いても、2種以上を積層又は混合して用いてもよい。無機化合物、有機化合物の被覆量は、酸化亜鉛粒子に対し、0.1〜50質量%の範囲が好ましく、0.1〜30質量%の範囲が更に好ましい。
酸化亜鉛粒子の粒子表面に前記の無機化合物や有機化合物を被覆させるには、酸化亜鉛粒子の水性スラリー中で、無機化合物あるいは有機化合物を添加し中和するなどして被覆することができる。また、有機化合物を被覆するには別の方法として、酸化亜鉛粒子に有機化合物を添加してミキサーで乾式処理を行い、熱処理を施すなどして被覆することもできる。
硫酸亜鉛七水和物0.6モルとクエン酸三ナトリウム二水和物0.002モルとを、5Lのビーカー中で700mLの純水に溶解した。この水溶液を撹拌機で撹拌しながら、この水溶液に室温で、1.55モルのモノエタノールアミンを700mLの水に溶解させた水溶液を10分間かけて添加し、60分間保持した。その後水溶液を加熱して、95℃まで昇温させた。水溶液の温度を95℃に保持し、撹拌機で撹拌しながら、4時間の間熟成を行い、水溶液中に白色沈殿を得た。吸引ろ過によって上記白色沈殿を回収し、150℃、3時間乾燥し、試料aを得た。X線回折パターンの測定の結果、試料aは酸化亜鉛粒子であることが確認された。試料aの走査電子顕微鏡写真を図1に示す。
クエン酸三ナトリウム二水和物とモノエタノールアミンの添加量をそれぞれ、0.006モルと1.80モルに変更した以外は比較例1と同様にして試料bを得た。X線回折パターンの測定の結果、試料bは酸化亜鉛粒子であることが確認された。試料bの走査電子顕微鏡写真を図3に示す。
モノエタノールアミンの添加量を1.80モルに変更した以外は比較例1と同様にして試料cを得た。X線回折パターンの測定の結果、試料cは酸化亜鉛粒子であることが確認された。試料cの走査電子顕微鏡写真を図5に示す。
Zn4SO4(OH)6・5H2Oの組成式で表される層状亜鉛化合物82gを1400mLの水に分散させた。そしてこの分散液を加熱して、95℃まで昇温させた。昇温後は、水溶液の温度を95℃に保持し、撹拌機で撹拌しながら、0.31モルのモノエタノールアミンを140mLの水に溶解させた水溶液を添加した。95℃で8時間の間熟成を行い、水溶液中に白色沈殿を得た。上記白色沈殿を吸引ろ過によって回収し、150℃、3時間乾燥し、試料Aを得た。X線回折パターンの測定の結果、試料dは酸化亜鉛粒子であることが確認された。試料dの走査電子顕微鏡写真を図7に示す。
試料aを3Lビーカーに100g秤量し、 純水1Lを加えてスラリー化した。このスラリーを撹拌機で撹拌しながら室温下、酸化亜鉛のモル数に対して10%相当の希硫酸(濃度2%)を1時間かけて添加した。溶液のpHは6〜8の範囲であった。酸添加後、生じた白色沈殿を吸引ろ過で回収後、乾燥して、700℃で2時間焼成して、酸化亜鉛粒子(試料A)を得た。試料Aの走査電子顕微鏡写真を図2に示す。
試料aに代えて試料bを用いた以外は実施例1と同様にして酸化亜鉛粒子(試料B)を得た。試料Bの走査電子顕微鏡写真を図4に示す。
試料aに代えて試料cを用いた以外は実施例1と同様にして酸化亜鉛粒子(試料C)を得た。試料Cの走査電子顕微鏡写真を図6に示す。
試料aに代えて試料dを用いた以外は実施例1と同様にして酸化亜鉛粒子(試料D)を得た。試料Dの走査電子顕微鏡写真を図8に示す。
(式1)・・・r=(K・λ)/βcosθ
r:平均結晶子径(Å)
λ:X線の波長(CuKα線 1.541Å)
β:回折ピークの半価幅
θ:ブラッグ角
K:定数(=0.94)
(1) 光学系
(ア)入射スリット 1°
(イ)長手制限スリット 2mm
(ウ)受光スリット1 1°
(エ)Kβフィルター あり
(オ)受光スリット 0.3mm
(2) 測定範囲:5〜50deg
(3) 走査方法
(ア)スキャン速度 8.000deg/min
(イ)ステップ幅 0.0200deg
上記試料A〜D及び試料a〜dに対して0.5質量%のエポキシシラン(KBM−403:信越化学社製)を添加し、ミキサーで乾式処理を行い、150℃で3時間熱処理して有機物被覆を施し、各前処理試料を得た。
上記前処理を施した試料A〜C、a〜cを用いて、次のようにして流動性評価用の樹脂組成物を作製した。先ず、樹脂(jER(登録商標)−807:ビスフェノールF型エポキシ樹脂、三菱化学社製)と、試料とをスクリュー瓶に秤量し、2000rpmで3分間混練した。続いて、1000rpmで1分間混練することで脱泡し、流動性測定用の樹脂組成物を作製した。尚、樹脂への試料の配合量(体積充填率)は40%とした。
・コーン:MP−20, C20/1 H
・測定温度:25 ℃
・ギャップ:0.052 mm
・回転数:1, 2, 5, 10, 20 rpm
上記前処理を施した試料を用いて、次のようにして熱伝導率測定用のサンプルを作製した。先ず、樹脂(jER(登録商標)−807)100質量部及び試料1230質量部と共に、アミン硬化剤(Jeffamine(登録商標) EDR−148、米国ハンツマン社製)22質量部をスクリュー瓶に秤量し、上記粘度測定用の樹脂ペースト作製時と同様に混練、脱泡して、樹脂組成物を作製した。得られた樹脂組成物を加圧成型器に充填して、加圧させながら150℃に加温して固化し、熱伝導率測定用ペレットを作製した。樹脂への試料の配合量(体積充填率)は70%である。
熱伝導率=熱拡散率×比熱×比重
結果を表3に示す。
Claims (13)
- レーザー回折/散乱法で測定したメジアン径Rが1〜100μmである多面体形状であって、多面体を構成する隣接する面同士の稜線及び頂点に相当する部分が曲面で構成されている角丸多面体形状酸化亜鉛粒子。
- 前記多面体形状が六角柱状である請求項1に記載の角丸多面体形状酸化亜鉛粒子。
- 電子顕微鏡法で測定した六角形の面の平均わたり径L(μm)と、六角形の面に略垂直方向の高さH(μm)とのアスペクト比H/Lが0.5〜2である請求項2に記載の角丸多面体形状酸化亜鉛粒子。
- タップ密度が2g/cm3以上である請求項1〜3のいずれかに記載の角丸多面体形状酸化亜鉛粒子。
- 多面体形状を基本形状とし、その表面に錐台状、瘤状又は鱗状から選ばれる少なくとも一種類の凸部が複数存在する外観である請求項1〜4のいずれかに記載の角丸多面体形状酸化亜鉛粒子。
- 表面に有機化合物及び/又は無機化合物を含む被覆を有する請求項1〜5のいずれかに記載の角丸多面体形状酸化亜鉛粒子。
- 請求項1〜6に記載の角丸多面体形状酸化亜鉛粒子と、他のフィラーを含む混合粉末。
- 多面体形状酸化亜鉛粒子を酸と接触させる、酸化亜鉛粒子の製造方法。
- 請求項1〜6のいずれか一項に記載の酸化亜鉛粒子又は請求項7に記載の混合粉末を含む化粧料。
- 請求項1〜6のいずれか一項に記載の酸化亜鉛粒子又は請求項7に記載の混合粉末を含む塗料組成物。
- 請求項1〜6のいずれか一項に記載の酸化亜鉛粒子又は請求項7に記載の混合粉末を含む樹脂組成物。
- 請求項1〜6のいずれか一項に記載の酸化亜鉛粒子又は請求項7に記載の混合粉末を含む放熱性組成物。
- 更に、他の放熱フィラーを含む請求項12に記載の放熱性組成物。
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