JP7029589B2 - 断熱材 - Google Patents
断熱材 Download PDFInfo
- Publication number
- JP7029589B2 JP7029589B2 JP2017235639A JP2017235639A JP7029589B2 JP 7029589 B2 JP7029589 B2 JP 7029589B2 JP 2017235639 A JP2017235639 A JP 2017235639A JP 2017235639 A JP2017235639 A JP 2017235639A JP 7029589 B2 JP7029589 B2 JP 7029589B2
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- JP
- Japan
- Prior art keywords
- resin
- composite layer
- heat insulating
- lipophilic
- coating film
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
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- 238000009413 insulation Methods 0.000 title description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 82
- 229920005989 resin Polymers 0.000 claims description 72
- 239000011347 resin Substances 0.000 claims description 72
- 239000002131 composite material Substances 0.000 claims description 64
- 239000011248 coating agent Substances 0.000 claims description 60
- 238000000576 coating method Methods 0.000 claims description 60
- 239000004745 nonwoven fabric Substances 0.000 claims description 42
- 239000000377 silicon dioxide Substances 0.000 claims description 40
- 239000011810 insulating material Substances 0.000 claims description 32
- 239000003973 paint Substances 0.000 claims description 31
- 239000000835 fiber Substances 0.000 claims description 24
- 229920001187 thermosetting polymer Polymers 0.000 claims description 12
- 229920001225 polyester resin Polymers 0.000 claims description 9
- 239000004645 polyester resin Substances 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 239000010410 layer Substances 0.000 description 53
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000002245 particle Substances 0.000 description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
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- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
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- DKAGJZJALZXOOV-UHFFFAOYSA-N hydrate;hydrochloride Chemical compound O.Cl DKAGJZJALZXOOV-UHFFFAOYSA-N 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
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- 125000005313 fatty acid group Chemical group 0.000 description 1
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- 238000001879 gelation Methods 0.000 description 1
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- 238000013007 heat curing Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
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- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
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Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Thermal Insulation (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
図2は、実施の形態の塗料コーティングがされた断熱材110の断面を示す。図2(b)に実施の形態のコーティング膜の平面図を示す。図3に実施の形態のコーティング膜の外観を示す図
断熱材110は、不織布106及びシリカエアロゲル105からなる複合層102の周囲に、コーティング膜111が形成された構造である。複合層102からはみ出している不織布106の繊維は、コーティング膜111中の水溶性樹脂112や反応性の親油性樹脂113と密着している。
複合層102は、厚み0.05~1.0mmの不織布106に、ナノサイズの多孔質構造を有するシリカエアロゲル105を内包させたシートである。熱伝導率は、0.01~0.1W/mKである。
この空隙に低熱伝導率材料(一般に0.010~0.015W/mKといわれる)としてシリカエアロゲル105を内包させることで上記低熱伝導率を実現できる。
本実施の形態において使用する複合層102の熱伝導率は、0.01~0.1W/m・Kの範囲内にある。複合層102の熱伝導率は、低ければ低いほどその断熱効果が高くなり、同じ断熱効果を得るために必要な複合層102の厚さを薄くすることができる。
複合層102の厚さは0.05mm~2mmの範囲内にあり、好ましくは0.5mm~1mmの範囲内にある。複合層102の厚さが0.05mmよりも薄い場合には厚さ方向の断熱効果が低下するので、熱伝導率が(現在存在し得ない程の)かなり低い低熱伝導材料を選択しなければその一面から他面への厚さ方向の伝熱を良好に低減させ得ない。
複合層102の製造方法の一例を示す。
複合層102は、不織布106とシリカエアロゲル105の複合体であるが、表層部及び端部では、不織布106の繊維の一部が表層や端部から飛び出している物を用いる。複合層102から、不織布106の繊維が飛び出した構造を形成する方法としては、どのような方法でもよく、限定はしない。
コーティング塗料は、少なくとも水溶性のベース塗料と、熱硬化性の親油性樹脂113で構成されている。
塗料コーティングにて形成された断熱材110の構造は、不織布106にシリカエアロゲル105が凝集接合し一体化した複合層102の表面層に不織布106の繊維が飛び出した構造になっている。
(a)水溶性樹脂112:水性ポリエステル樹脂:プラスコートZ-880(固形分25wt%):100部
(b)親油性樹脂113:一液性エポキシ樹脂:ノバキュアHX3941HP(イミダゾール比率は、1/3wt%、エポキシ比率は、2/3wt%) :10部
(c)相溶化剤:2-プロパノール(IPA):10部
(2)コーティング塗料の作製
各(a)~(c)を秤量し、ディスパーにて15分間攪拌混合して、海島構造形成用のコーティング塗料を作成した。
複合層102の不織布106は、その繊維が複合層102の表面層から突き出ており、その繊維と最表層部のコーティング膜111の親油性樹脂113とが、親油性同士で馴染みがよく、強い接着反応することで優れた高密着性を発揮する。
複合層102にコーティング樹脂膜を幅10mm、厚み30μmの膜を形成し、90度ピール法で引っ張り強度を測定した。
<断熱材110の熱伝導率>
複合層102にコーティング膜111を30μm厚みでコーティングした断熱材110の熱伝導率は、0.07W/m・Kであった。これは、複合層102単独と比較しても遜色の無い優れた断熱性能を発揮していることを確認出来た。
102 複合層
103 シリカエアロゲル層
104 ラミネートフィルム
105 シリカエアロゲル
106 不織布
110 断熱材
111 コーティング膜
112 水溶性樹脂
113 親油性樹脂
Claims (9)
- 不織布にシリカエアロゲルを内包した複合層と、
親水性樹脂と親油性樹脂とを含み、前記複合層の表面を被覆するコーティング膜と、を有し、
前記不織布の繊維の一部が、前記複合層からはみ出し、
前記コーティング膜とはみ出した前記繊維の一部とが密着した断熱材。 - 前記親水性樹脂中に前記親油性樹脂が複数の島状で存在する請求項1記載の断熱材。
- 前記島状の親油性樹脂と親油性の前記はみ出した繊維の一部とが密着した請求項2記載の断熱材。
- 不織布にシリカエアロゲルを内包した複合層と、
親水性樹脂と親油性樹脂とを含み、前記複合層の表面を被覆するコーティング膜と、を有し、
前記親水性樹脂は、水溶性塗料ベースの樹脂である断熱材。 - 不織布にシリカエアロゲルを内包した複合層と、
親水性樹脂と親油性樹脂とを含み、前記複合層の表面を被覆するコーティング膜と、を有し、
前記親油性樹脂は、熱硬化性樹脂である断熱材。 - 不織布にシリカエアロゲルを内包した複合層と、
親水性樹脂と親油性樹脂とを含み、前記複合層の表面を被覆するコーティング膜と、を有し、
前記親水性樹脂は、水溶性ポリエステル樹脂であり、
前記親油性樹脂は、エポキシ樹脂である断熱材。 - 前記コーティング膜の厚みは、1~100μmである請求項1~6のいずれか1項に記載の断熱材。
- 不織布にシリカエアロゲルを内包した複合層と、
親水性樹脂と親油性樹脂とを含み、前記複合層の表面を被覆するコーティング膜と、を有し、
前記親水性樹脂中に前記親油性樹脂が複数の島状で存在し、
前記複数の島状の径は、0.1~50μmである断熱材。 - 前記親油性樹脂は、前記コーティング膜中に5~50重量%である請求項1~8のいずれか1項に記載の断熱材。
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