JP3992673B2 - 繊維系ボード - Google Patents
繊維系ボード Download PDFInfo
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- JP3992673B2 JP3992673B2 JP2003326593A JP2003326593A JP3992673B2 JP 3992673 B2 JP3992673 B2 JP 3992673B2 JP 2003326593 A JP2003326593 A JP 2003326593A JP 2003326593 A JP2003326593 A JP 2003326593A JP 3992673 B2 JP3992673 B2 JP 3992673B2
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- Prior art keywords
- fiber
- polylactic acid
- bending strength
- board
- acid resin
- 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.)
- Expired - Fee Related
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- 239000011094 fiberboard Substances 0.000 title claims description 30
- 239000000835 fiber Substances 0.000 claims description 59
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 54
- 239000004626 polylactic acid Substances 0.000 claims description 54
- 239000011347 resin Substances 0.000 claims description 48
- 229920005989 resin Polymers 0.000 claims description 48
- 238000005452 bending Methods 0.000 claims description 41
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 29
- 239000000178 monomer Substances 0.000 claims description 15
- 230000014759 maintenance of location Effects 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 11
- JVTAAEKCZFNVCJ-REOHCLBHSA-N L-lactic acid Chemical compound C[C@H](O)C(O)=O JVTAAEKCZFNVCJ-REOHCLBHSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 5
- JVTAAEKCZFNVCJ-UWTATZPHSA-N D-lactic acid Chemical compound C[C@@H](O)C(O)=O JVTAAEKCZFNVCJ-UWTATZPHSA-N 0.000 claims description 4
- 239000008188 pellet Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 229930182843 D-Lactic acid Natural products 0.000 claims description 3
- 229940022769 d- lactic acid Drugs 0.000 claims description 3
- 239000000463 material Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 13
- 229920000642 polymer Polymers 0.000 description 12
- -1 carbonate compound Chemical class 0.000 description 11
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 240000000797 Hibiscus cannabinus Species 0.000 description 7
- 239000004566 building material Substances 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- 229920000704 biodegradable plastic Polymers 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000007062 hydrolysis Effects 0.000 description 6
- 238000006460 hydrolysis reaction Methods 0.000 description 6
- 239000004310 lactic acid Substances 0.000 description 6
- 235000014655 lactic acid Nutrition 0.000 description 6
- 239000001913 cellulose Substances 0.000 description 5
- 229920002678 cellulose Polymers 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- JJTUDXZGHPGLLC-UHFFFAOYSA-N lactide Chemical compound CC1OC(=O)C(C)OC1=O JJTUDXZGHPGLLC-UHFFFAOYSA-N 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000007259 addition reaction Methods 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 244000025254 Cannabis sativa Species 0.000 description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 150000001718 carbodiimides Chemical class 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000006482 condensation reaction Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 235000021189 garnishes Nutrition 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- QWVGKYWNOKOFNN-UHFFFAOYSA-N o-cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- OZZQHCBFUVFZGT-UHFFFAOYSA-N 2-(2-hydroxypropanoyloxy)propanoic acid Chemical compound CC(O)C(=O)OC(C)C(O)=O OZZQHCBFUVFZGT-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- 240000008564 Boehmeria nivea Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000004970 Chain extender Substances 0.000 description 1
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- 240000004153 Hibiscus sabdariffa Species 0.000 description 1
- 235000001018 Hibiscus sabdariffa Nutrition 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 240000006240 Linum usitatissimum Species 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 description 1
- 241000209504 Poaceae Species 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229920003232 aliphatic polyester Polymers 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 150000001541 aziridines Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 235000008216 herbs Nutrition 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 150000004893 oxazines Chemical class 0.000 description 1
- 150000002918 oxazolines Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- CASUWPDYGGAUQV-UHFFFAOYSA-M potassium;methanol;hydroxide Chemical compound [OH-].[K+].OC CASUWPDYGGAUQV-UHFFFAOYSA-M 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
Images
Landscapes
- Dry Formation Of Fiberboard And The Like (AREA)
- Nonwoven Fabrics (AREA)
Description
曲げ強さ(MPa)=3PL/2Wt 2
P:最大曲げ荷重(N)
L:支点間距離(mm)
W:試験片の幅(mm)
t:試験片の厚さ(mm)
(2)上記繊維系ボードにおいて、前記ポリ乳酸系樹脂のカルボキシル末端量が10当量/t以下であることを特徴とする繊維系ボード。
(3)上記繊維系ボードにおいて、前記ポリ乳酸系樹脂にポリカルボジイミド化合物が添加されていることを特徴とする繊維系ボード。
(4)上記繊維系ボードにおいて、原料ペレットの状態での残存モノマー量が500ppm以下のポリ乳酸系樹脂を用いたことを特徴とする繊維系ボード。
(5)上記繊維系ボードにおいて、前記ポリ乳酸系樹脂の混率が10〜90重量%である繊維系ボード。
見かけ密度〔g/cm3 〕=(繊維系ボードの重量〔g〕)/(繊維系ボードの体積〔cm3 〕)
繊維系ボードの体積〔cm3 〕=10cm×10cm×t〔cm〕
曲げ強さ(MPa)=3PL/2Wt2
P:最大曲げ荷重(N)
L:支点間距離(mm)
W:試験片の幅(mm)
t:試験片の厚さ(mm)
特開2001−261797号公報記載のように、秤量したサンプルを含水率5%に調整したo−クレゾールに溶解し、ジクロロメタンを適量添加した後、0.02規定のKOHメタノール溶液で滴定した。この時、乳酸2量体であるラクチド等のオリゴマーは加水分解しカルボキシル末端を生じるため、ポリマーのカルボキシル末端およびモノマー由来のカルボキシル末端の両方を合計したカルボキシル末端濃度を求めた。
作成した繊維系ボードから幅W50mm、長さ150mmの試験片Sを採取する。このとき、試験片Sの板厚をt(mm)とする。図2に示すように、試験片Sを支点間距離L=100mmで支えた状態で支点間中心に荷重速度50mm/分にて荷重Pを加える。ここで、支点及び荷重作用点の曲率半径Rは3.2mmとする。そして、試験片Sを屈曲させるのに要した最大曲げ荷重Pを測定し、下式により曲げ強さを求める。その平均値をその試験片Sの曲げ強さとした。
曲げ強さ(MPa)=3PL/2Wt2
試料をアセトニトリルに浸漬して抽出した液を、溶媒にアセトニトリル、ポリマー系逆相分配カラム、UV検出器を用いて液体クロマトグラフにより分析し、絶対検量線法でモノマー量を算出した。
ポリ乳酸系樹脂を公知の方法で繊維化し、捲縮付与後カットして繊度6.6デシテックス、長さ51mmの短繊維を得た。このときカルボキシル末端濃度は40当量/tであった。このポリ乳酸繊維とケナフ靱皮繊維を65mmにカットしたものを30:70の重量比で混綿、開繊してシート状にしたものを積層し、目付1600g/m2 の積層体を得た。この積層体を2枚の金型の間に厚さ2.3mmのスペーサと共に挟み込み、230℃加熱下のプレス機で圧力2.4MPa、1分間加熱加圧成型を行った。
実施例1のポリ乳酸系樹脂にポリカルボジイミド化合物として日清紡社製の熱可塑性ポリカルボジイミド“カルボジライト”HMV−8CA(カルボジイミド1当量/カルボジイミド278g)を用い、混練した。添加量はカルボキシル末端量に対し1.0倍当量(ポリ乳酸系樹脂に対して1.0wt%)とした。実施例1と同様に短繊維化したところカルボキシル末端濃度は検出限界である5当量/t以下であった。その他は実施例1と同様にして繊維系ボードを得た。
重量平均分子量(Mw)121000、融点(Tm)175.8℃、モノマー量487ppmのポリ乳酸系樹脂にポリカルボジイミド化合物として日清紡社製の熱可塑性ポリカルボジイミド“カルボジライト”HMV−8CA(カルボジイミド1当量/カルボジイミド278g)を用い、混練した。添加量はカルボキシル末端量に対し1.0倍当量(ポリ乳酸系樹脂に対して1.0wt%)とした。実施例1と同様に短繊維化したところカルボキシル末端濃度は検出限界である5当量/t以下であった。その他は実施例1と同様にして繊維系ボードを得た。
ポリ乳酸とケナフ靱皮繊維を50:50の重量比で用いたこと以外は実施例1と同様にして繊維系ボードを得た。得られたボードの目付は1500g/m2 、厚さ2.3mm、見かけ密度0.65g/cm3 、曲げ強さは59MPaであった。また、該ボード中のポリ乳酸系樹脂のカルボキシル末端濃度は45当量/tであった。該ボードを50℃、95%RHの高温高湿下で1200時間処理したところ、曲げ強さは17MPaとなり、保持率は29%であった。
実施例1と同様にして目付240g/m2 の積層体を得た。この積層体を2枚の金型の間に厚さ2.3mmのスペーサと共に挟み込み、230℃加熱下のプレス機で圧力2.4MPa、1分間加熱加圧成型を行った。得られた繊維ボードの目付は230g/m2 、厚さ2.3mm、見かけ密度0.1g/cm3 、曲げ強さは3.2MPaであった。また、該ボード中のポリ乳酸系樹脂のカルボキシル末端濃度は45当量/tであった。該ボードを50℃、95%RHの高温高湿下で1200時間処理したところ、曲げ強さは0.63MPaとなり、保持率は20%であった。
2 ポリ乳酸系樹脂
L 支点間距離
P 荷重
S 試験片
Claims (5)
- 靱皮繊維からなる天然繊維にバインダとしてL乳酸およびD乳酸のいずれかの単位を90モル%以上含むポリ乳酸系樹脂が混在し、見かけ密度が0.2g/cm3 以上であり、かつ、下式により計算される曲げ強さが初期値として30MPa以上であると共に、50℃、95%RHの高温高湿下で1200時間放置した後の曲げ強さの初期値に対する保持率が20%以上であることを特徴とする繊維系ボード。
曲げ強さ(MPa)=3PL/2Wt 2
P:最大曲げ荷重(N)
L:支点間距離(mm)
W:試験片の幅(mm)
t:試験片の厚さ(mm) - 前記ポリ乳酸系樹脂のカルボキシル末端量が10当量/t以下である請求項1に記載の繊維系ボード。
- 前記ポリ乳酸系樹脂にポリカルボジイミド化合物が添加されている請求項2に記載の繊維系ボード。
- 原料ペレットの状態での残存モノマー量が500ppm以下のポリ乳酸系樹脂を用いた請求項1〜3のいずれかに記載の繊維系ボード。
- 前記ポリ乳酸系樹脂の混率が10〜90重量%である請求項1〜4のいずれかに記載の繊維系ボード。
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JP2003326593A JP3992673B2 (ja) | 2002-09-18 | 2003-09-18 | 繊維系ボード |
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JP2002271544 | 2002-09-18 | ||
JP2003326593A JP3992673B2 (ja) | 2002-09-18 | 2003-09-18 | 繊維系ボード |
Publications (2)
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JP2004130796A JP2004130796A (ja) | 2004-04-30 |
JP3992673B2 true JP3992673B2 (ja) | 2007-10-17 |
Family
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JP2003326593A Expired - Fee Related JP3992673B2 (ja) | 2002-09-18 | 2003-09-18 | 繊維系ボード |
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Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4048965B2 (ja) * | 2003-01-31 | 2008-02-20 | トヨタ自動車株式会社 | 生分解性樹脂からなる繊維複合材 |
JP4498783B2 (ja) * | 2004-03-17 | 2010-07-07 | トヨタ紡織株式会社 | 木質成形体の製造方法 |
JP2006030905A (ja) * | 2004-07-21 | 2006-02-02 | Nippon Ester Co Ltd | 吸音材 |
JP2006289769A (ja) * | 2005-04-11 | 2006-10-26 | Toray Ind Inc | 繊維系ボードおよびその製造方法 |
JP4661368B2 (ja) * | 2005-05-30 | 2011-03-30 | 東レ株式会社 | 繊維系ボードの製造方法および製造装置 |
JP2007120128A (ja) * | 2005-10-27 | 2007-05-17 | Gifuken Shinrin Kumiai Rengokai | コンクリートブロック及びその製造方法 |
JP4862400B2 (ja) * | 2006-01-11 | 2012-01-25 | トヨタ自動車株式会社 | 繊維複合材料及びその製造方法 |
JP2007210224A (ja) * | 2006-02-10 | 2007-08-23 | Toray Ind Inc | 繊維系ボード |
JP4773520B2 (ja) * | 2006-07-03 | 2011-09-14 | 名古屋油化株式会社 | 繊維シート、積層繊維シート、および繊維シート成形物 |
JP5170512B2 (ja) * | 2007-05-29 | 2013-03-27 | 株式会社Nerc | 生分解性断熱材とその成型体およびそれらの製造方法並びにそれらの製造方法を用いた植物育成材と肥料材 |
CN102099404A (zh) * | 2008-05-16 | 2011-06-15 | 印度尼西亚科学学院(Lipi) | 大麻槿微纤维与聚丙烯或聚乳酸的复合物 |
JP5375046B2 (ja) * | 2008-11-25 | 2013-12-25 | 東レ株式会社 | 繊維系ボードの製造方法 |
WO2013073425A1 (ja) | 2011-11-14 | 2013-05-23 | 東レ株式会社 | プレス成型用不織布及びその製造方法並びに成型体の製造方法 |
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2003
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