JPH01146702A - Manufacture of wood-plastic composite body - Google Patents
Manufacture of wood-plastic composite bodyInfo
- Publication number
- JPH01146702A JPH01146702A JP30649087A JP30649087A JPH01146702A JP H01146702 A JPH01146702 A JP H01146702A JP 30649087 A JP30649087 A JP 30649087A JP 30649087 A JP30649087 A JP 30649087A JP H01146702 A JPH01146702 A JP H01146702A
- Authority
- JP
- Japan
- Prior art keywords
- acrylate
- wood
- meth
- polymer
- tert
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000011155 wood-plastic composite Substances 0.000 title description 32
- 229920001587 Wood-plastic composite Polymers 0.000 title description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 51
- -1 tert-butylcyclohexyl Chemical group 0.000 claims abstract description 26
- 239000000178 monomer Substances 0.000 claims abstract description 22
- 229920001519 homopolymer Polymers 0.000 claims abstract description 16
- 229920001577 copolymer Polymers 0.000 claims abstract description 13
- 239000002023 wood Substances 0.000 claims description 54
- 239000002131 composite material Substances 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 abstract description 76
- 230000008961 swelling Effects 0.000 abstract description 18
- 238000010521 absorption reaction Methods 0.000 abstract description 14
- RWCHFQMCWQLPAS-UHFFFAOYSA-N (1-tert-butylcyclohexyl) 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1(C(C)(C)C)CCCCC1 RWCHFQMCWQLPAS-UHFFFAOYSA-N 0.000 abstract description 6
- 230000008602 contraction Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 47
- 238000010992 reflux Methods 0.000 description 29
- 239000000243 solution Substances 0.000 description 29
- 238000012441 weak partitioning chromatography Methods 0.000 description 27
- 230000014759 maintenance of location Effects 0.000 description 24
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 15
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 13
- 239000008096 xylene Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 12
- 239000011259 mixed solution Substances 0.000 description 11
- 238000005470 impregnation Methods 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000010876 untreated wood Substances 0.000 description 10
- 238000001035 drying Methods 0.000 description 9
- 238000006116 polymerization reaction Methods 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- 238000011049 filling Methods 0.000 description 7
- BWSZXUOMATYHHI-UHFFFAOYSA-N tert-butyl octaneperoxoate Chemical compound CCCCCCCC(=O)OOC(C)(C)C BWSZXUOMATYHHI-UHFFFAOYSA-N 0.000 description 7
- XPEMPJFPRCHICU-UHFFFAOYSA-N (1-tert-butylcyclohexyl) prop-2-enoate Chemical compound C=CC(=O)OC1(C(C)(C)C)CCCCC1 XPEMPJFPRCHICU-UHFFFAOYSA-N 0.000 description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000010422 painting Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 5
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 241000218691 Cupressaceae Species 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920001223 polyethylene glycol Polymers 0.000 description 4
- 238000001291 vacuum drying Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 230000002579 anti-swelling effect Effects 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 239000003505 polymerization initiator Substances 0.000 description 2
- MJYFYGVCLHNRKB-UHFFFAOYSA-N 1,1,2-trifluoroethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(F)(F)CF MJYFYGVCLHNRKB-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 241001337993 Agathis <wasp> Species 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 235000015392 Sesbania grandiflora Nutrition 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 description 1
- 125000002511 behenyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007278 cyanoethylation reaction Methods 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000012454 non-polar solvent Substances 0.000 description 1
- 125000001117 oleyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000012976 tarts Nutrition 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 239000010875 treated wood Substances 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕 ゛ □本発明はｔｅｒ
ｔ−ブチｔｉｔシグロへキシルメタ）アクリレートのホ
モポリマーまたｉコポリマーを用いた寸法安定性に子ぐ
れる木材ニブラスチック複合体の製造方法に関する。
゛ ゛〔従来の技術〕 ゛ ″
一般に、木材は吸湿、放湿に際し膨潤収縮する性質があ
り、このためそりや割れを生じ、ついには強度低下をき
たすという欠点を有してい名゛。この理由として、木材
中の水分が移動する場合、木材の表面部位に近いところ
の水分がまず蒸発して乾燥収縮を生じるが、内部におい
ては高含氷率あ状態で未収縮となっており、εの乾燥収
縮と未収縮゛との境界比おいて応力が生じ、この応力を
緩和す１形でそりや割れが生じるものと考えられている
゛。
′ □従来より、これらの現象
を防止し、木材の寸痩安定性を向上させる方法として、
ホルマール化法、アゼチル化法、加熱法、シアノエチル
化法、アルキルケテンダイマー処理、エチレンオキサイ
ド処理などが知られてＵ′するが、これらの方法は木材
の脆弱化あるいは工程が複雑で実施困難や多大のコ長ド
ア・レテとなるなふ゛の難点があり、いずれも実用イ粕
は至っていない。[Detailed description of the invention] [Industrial application field] ゛ □The present invention
The present invention relates to a method for producing a wood niblastic composite with improved dimensional stability using a homopolymer or i-copolymer of t-butytitsiglohexyl meth)acrylate.
゛ ゛ [Prior Art] ゛ '' In general, wood has the property of swelling and contracting when it absorbs and releases moisture, which causes warping and cracking, which ultimately leads to a decrease in strength.The reason for this. As a result, when moisture moves in wood, the moisture near the surface of the wood evaporates first and causes drying shrinkage, but inside the wood there is no shrinkage due to high ice content, and ε Stress is generated at the boundary between drying shrinkage and non-shrinkage, and it is thought that one way to relieve this stress is to cause warping and cracking.
′ □Conventionally, as a method to prevent these phenomena and improve the thinning stability of wood,
Formalization method, azetylation method, heating method, cyanoethylation method, alkyl ketene dimer treatment, ethylene oxide treatment, etc. are known, but these methods cause the wood to become brittle or the process is complicated, making it difficult to implement or requiring a lot of effort. There are drawbacks to the length of the door and the length of the door, and none of them have been put to practical use.
一方、近年、上記方法とは異なる木材の処理方法として
、膨潤域充填法およびモノマー含浸法が材の空隙部内に
適責めポリマ一番含浸充填させる方法であり、またモノ
マー含浸法は、木材の空隙部内に重合性のモノマーを含
浸させてこれを重合させる方法である。これらの方法に
て処理された木材は、いずれも木材とその空隙部内に保
持されたポリマーとからなる、いわゆる木材−プラスチ
ック複合体となるものであり、上記ポリマーの種類に応
じて木材の硬度、引張強度９曲げ強度などの物性を大き
く改良できるという特徴がある。On the other hand, in recent years, as wood treatment methods different from the above methods, the swelling zone filling method and the monomer impregnation method are methods in which the voids of the wood are impregnated with a suitable polymer. This is a method in which a polymerizable monomer is impregnated into the part and then polymerized. All of the wood treated with these methods becomes a so-called wood-plastic composite consisting of wood and a polymer held within the voids, and the hardness and hardness of the wood vary depending on the type of polymer. It is characterized by the ability to greatly improve physical properties such as tensile strength and bending strength.
しかるに、木材の前記欠点である寸法安定性を改善する
という面では、上記二つの処理方法は下記の理由により
必ずしも有効な方法とはいえなかった。However, in terms of improving the dimensional stability, which is the drawback of wood, the above two treatment methods cannot necessarily be said to be effective methods for the following reasons.
まず、上記の膨潤域充填法は、これに適用可能なポリマ
ーとしてポリビニルアルコールやポリエチレングリコー
ルなどが知られているが、このうち低分子量のポリエチ
レングリコールを用いた場合に比較的良好な寸法安定性
が得られる。ところが、このポリマーは低分子量である
ために常温で液体または半固体であり水溶性であるため
、経口的に処理木材つまり複合体の表面より溶出し、そ
の後の塗装が困難となる欠点がある。First, in the swelling region filling method described above, polyvinyl alcohol and polyethylene glycol are known to be applicable polymers, but among these, low molecular weight polyethylene glycol has relatively good dimensional stability. can get. However, since this polymer has a low molecular weight and is liquid or semi-solid at room temperature and is water-soluble, it has the disadvantage that it is orally eluted from the surface of the treated wood, that is, the composite, making subsequent painting difficult.
また、モノマー含浸法は、これに適用できる千ツマ−と
してメチルメタクリレート、スチレン、２−ヒドロキシ
エチルアクリレート、ポリオキシアルキレングリコール
（メタ）アクリレートなどの種々のモノマーが知られて
いるが、これら公知のどの七ツマ−を選択使用しても、
含浸重合後のポリマー保持率を４０〜９０重量％という
高保持率としなければ、木材の寸法安定性を充分に改善
できず、このような高いポリマー保持率にすると複合体
の重量が著しく増加し、生産コストも非常に高くなる。In addition, various monomers such as methyl methacrylate, styrene, 2-hydroxyethyl acrylate, and polyoxyalkylene glycol (meth)acrylate are known to be applicable to the monomer impregnation method. Even if you selectively use the seven tools,
The dimensional stability of the wood cannot be sufficiently improved unless the polymer retention after impregnation polymerization is as high as 40 to 90% by weight, and such a high polymer retention significantly increases the weight of the composite. , the production cost will also be very high.
また、モノマー含浸の場合は後の重合工程での管理が困
難である。Furthermore, in the case of monomer impregnation, it is difficult to control the subsequent polymerization step.
したがって、本発明は、上記二つの処理方法にて代表さ
れるような木材の物性改良に有効な木材−プラスチック
複合体を得るにあたり、上記従来の如き問題をきたすこ
となく、つまり経口的に複合体よりポリエチレングリコ
ールが溶出する如き現象が現れてその後の塗装が困難と
なるといった問題やポリマー保持率に起因した重量の著
しい増加、生産コストの増大といった問題をきたすこと
なく、寸法安定性の高度に改善された上記複合体を得る
ことを目的とする。Therefore, the present invention aims at obtaining a wood-plastic composite effective for improving the physical properties of wood as typified by the above two treatment methods, without causing the above-mentioned conventional problems. Dimensional stability is highly improved without causing problems such as leaching of polyethylene glycol, which makes subsequent painting difficult, or problems such as a significant increase in weight and production costs due to polymer retention. The purpose is to obtain the above-mentioned complex.
本発明者らは、上記の目的を達成するために鋭意検討し
た結果、前記二つの処理方法のうち膨潤域充填法に属す
る方法であって、これに適用する木材充填用のポリマー
として従来用いられたことのない特定のポリマーを使用
したときには、前述の如き問題をきたすことなく寸法安
定性の高度に改善された木材−プラスチック複合体を製
造できるものであることを知り、この発明を完成するに
至った。As a result of intensive studies to achieve the above object, the present inventors found that among the above two treatment methods, a method belonging to the swelling zone filling method, which is a method that is conventionally used as a polymer for wood filling applied to this method, was found. The realization that a wood-plastic composite with highly improved dimensional stability could be produced without the aforementioned problems by using a specific polymer that had never been used before, led to the completion of this invention. It's arrived.
すなわち、本発明は、木材中にｔｅｒｔ−ブチルシクロ
ヘキシル（メタ）アクリレートのホモポリマーまたはｔ
ｅｒｔ−ブチルシクロヘキシル（メタ）アクリレートと
これと共重合可能な他のモノマーとのコポリマーを含浸
させることを特徴とする木材−プラスチック複合体（以
下、ＷＰＣという）の製造方法に係るものである。That is, the present invention provides a homopolymer of tert-butylcyclohexyl (meth)acrylate or tert-butylcyclohexyl (meth)acrylate in wood.
The present invention relates to a method for producing a wood-plastic composite (hereinafter referred to as WPC), which is characterized by impregnating a copolymer of ert-butylcyclohexyl (meth)acrylate and another monomer copolymerizable with the same.
このように、本発明においては、木材中に含浸充填させ
るべきポリマーとして、ｔｅｒｔ−ブチルシクロヘキシ
ル（メタ）アクリレートのホモポリマーまたはコポリマ
ーを使用したもので、これらポリマーはその分子内に上
記モノマーに由来する親油性でバルキーなｔｅｒｔ−ブ
チルシクロヘキシル基が含まれているため、前記従来の
膨潤域充填法に適用されていたポリマーはもちろんのこ
とモノマー含浸法に適用されていたメチルメタクリレー
トなどのモノマーを重合させてなるポリマーに比し、ポ
リマーとしての親油性が非常に高いという特徴を有して
いる。Thus, in the present invention, a homopolymer or copolymer of tert-butylcyclohexyl (meth)acrylate is used as the polymer to be impregnated and filled into wood, and these polymers have molecules derived from the above monomer in their molecules. Because it contains a lipophilic and bulky tert-butylcyclohexyl group, it is possible to polymerize not only the polymers used in the conventional swelling zone filling method but also monomers such as methyl methacrylate that were used in the monomer impregnation method. It is characterized by extremely high lipophilicity as a polymer compared to other polymers.
このため、このポリマーを木材中に含浸させると、木材
に対して高い撥水性を付与できるから、木材の吸湿性が
大幅に減少する。その結果、木材のそりや割れの現象を
招く吸放湿性が低下し、内部応力の発生が抑制されるた
め、得られるＷＰＣは極めてすぐれた寸法安定性を示す
ことになる。Therefore, when this polymer is impregnated into wood, high water repellency can be imparted to the wood, and the hygroscopicity of the wood is significantly reduced. As a result, the moisture absorption and desorption properties that cause warping and cracking of the wood are reduced, and the generation of internal stress is suppressed, so that the resulting WPC exhibits extremely excellent dimensional stability.
そして、この寸法安定性は、上記ポリマーの特徴に起因
して、このポリマーの木材中の保持率を前記従来の膨潤
域充填法やモノマー含浸法に比し非常に小さくしても、
良好に得られるため、ＷＰＣの著しい重量増加が抑制さ
れ、また生産コストの低減に好結果がもたらされる。し
かも、このポリマーによれば、前記従来の膨潤域充填法
とは異なり、経口的に複合体の表面にぬれを生じさせる
心配が本質的になく、このためその後の塗装が困難とな
るなどの問題をきたすおそれは特にない。Due to the characteristics of the above-mentioned polymer, this dimensional stability is achieved even if the retention rate of this polymer in the wood is very small compared to the above-mentioned conventional swelling zone filling method or monomer impregnation method.
Since it can be obtained satisfactorily, a significant increase in weight of WPC is suppressed, and good results are brought about in reducing production costs. Moreover, with this polymer, unlike the conventional swelling area filling method, there is essentially no need to worry about wetting the surface of the composite by oral administration, which makes subsequent painting difficult. There is no particular risk of causing this.
なお、本明細書において、（メタ）アクリレートとある
は、アクリレートまたはメタクリレートの意味であり、
したがって、たとえば上記のｔｅｒｔ−ブチルシクロヘ
キシル（メタ）アクリレートとは、ｔｅｒｔ−ブチルシ
クロヘキシルアクリレートまたはｊｅｒｔ−ブチルシク
ロヘキシルメタクリレートを意味するものである。In addition, in this specification, (meth)acrylate means acrylate or methacrylate,
Therefore, for example, the above-mentioned tert-butylcyclohexyl (meth)acrylate means tert-butylcyclohexyl acrylate or jet-butylcyclohexyl methacrylate.
本発明に用いられる木材としては、針葉樹、広葉樹、あ
るいは国産材、外国産材の区別を全く要しない。また、
原木、丸太、あるいは角柱、円柱、板状製材などのあら
ゆる形態゛の木材に適用することができる。As for the wood used in the present invention, there is no need to distinguish between softwood, hardwood, domestic wood, and foreign wood. Also,
It can be applied to all types of wood such as raw wood, logs, square columns, cylinders, and sawn boards.
本発明においては、上記の木材に含浸させるポリマーと
して、ｔｅｒｔ−ブチルシクロヘキシル（メタ）アクリ
レートのホモポリマーまたはｔｅｒ、ｔ−ブチルシクロ
ヘキシル（メタ）アクリレートとこれと共重合可能な他
の七ツマ−とのコポリマーが用いられる。ただし、上記
のホモポリマーには、ｔｅｒｔ−ブチルシクロヘキシル
アクリレートのホモポリマー、ｔｅｒｔ−ブチルシクロ
ヘキシルメタクリレートのホモポリマーのほか、ｔｅｒ
ｔ−ブチルシクロヘキシルアクリレートとｔｅｒｔ−ブ
チルシクロヘキシルメタクリレートとのコポリマーも含
まれる。また、ｔｅｒｔ−ブチルシクロヘキシル（メタ
）アクリレートとこれと共重合可能な他のモノマーとの
コポリマーを用いる場合は、ｔｅｒｔ−ブチルシクロヘ
キシル（メタ）アクリレートが全モノマー９５重量％以
上、好ましくは１０重量％以上とされたものであるのが
望ましい。この割合が少なくなりすぎると充分な寸法安
定性が得られない。In the present invention, as the polymer impregnated into the wood, a homopolymer of tert-butylcyclohexyl (meth)acrylate or a homopolymer of tert-butylcyclohexyl (meth)acrylate and other polymers copolymerizable with it are used. Copolymers are used. However, the above homopolymers include tert-butylcyclohexyl acrylate homopolymer, tert-butylcyclohexyl methacrylate homopolymer, and tert-butylcyclohexyl acrylate homopolymer.
Also included are copolymers of t-butylcyclohexyl acrylate and tert-butylcyclohexyl methacrylate. In addition, when using a copolymer of tert-butylcyclohexyl (meth)acrylate and another monomer copolymerizable with it, tert-butylcyclohexyl (meth)acrylate accounts for 95% by weight or more of the total monomers, preferably 10% by weight or more. It is desirable that the If this ratio becomes too small, sufficient dimensional stability cannot be obtained.
上記の共重合可能な他のモノマーとしては、たとえばメ
チル（メタ）アクリレート、エチル（メタ）アクリレー
ト、プロピル（メタ）アクリレート、イソプロピル（メ
タ）アクリレート、ｎ−ブチル（メタ）アクリレート、
イソブチル（メタ）アクリレート、２−エチルヘキシル
（メタ）アクリレート、デシル（メタ）アクリレート、
ラウリル（メタ）アクリレート、ミリスチル（メタ）ア
クリレート、ペンタデシル（メタ）アクリレート、セチ
ル（メタ）アクリレート、ステアリル（メタ）アクリレ
ート、ベヘニル（メタ）アクリレートなどのアルキル（
メタ）アクリレート、オレイル（メタ）アクリレート、
アクリルアミド、メタクリルアミド、スチレン、アクリ
ロニトリル、メタクリレートリル、酢酸ビニルなど、ま
たトリフルオロエチル（メタ）アクリレート、ヘプタデ
カフルオロデシル（メタ）アクリレートなどのポリフル
オロアルキル（メタ）アクリレート、２−ヒドロキシエ
チル（メタ）アクリレート、ヒドロキシプロピル（メタ
）アクリレート、ポリエチレングリコールモノ （メタ
）アクリレート、ポリプロピレングリコールモノ （メ
タ）アクリレートなどの水酸基含有モノマー、アクリル
酸、メタクリル酸、無水マレイン酸などの酸基含有上ツ
マ〜、グリシジル（メタ）アクリレートなどのエポキシ
基含有モノマへなどが挙げられる。Examples of the above copolymerizable monomers include methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate,
Isobutyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, decyl (meth)acrylate,
Alkyl (meth)acrylate, such as lauryl (meth)acrylate, myristyl (meth)acrylate, pentadecyl (meth)acrylate, cetyl (meth)acrylate, stearyl (meth)acrylate, and behenyl (meth)acrylate.
meth)acrylate, oleyl(meth)acrylate,
Acrylamide, methacrylamide, styrene, acrylonitrile, methacrylate, vinyl acetate, etc., polyfluoroalkyl (meth)acrylates such as trifluoroethyl (meth)acrylate, heptadecafluorodecyl (meth)acrylate, 2-hydroxyethyl (meth)acrylate, etc. Hydroxyl group-containing monomers such as acrylate, hydroxypropyl (meth)acrylate, polyethylene glycol mono (meth)acrylate, and polypropylene glycol mono (meth)acrylate, acid group-containing monomers such as acrylic acid, methacrylic acid, and maleic anhydride, glycidyl ( Examples include epoxy group-containing monomers such as meth)acrylate.
本発明において、上記の如き特定のポリマーは、ｔｅｒ
ｔ−ブチルシクロヘキシル（メタ）アクリレート単独ま
たはｔｅｒｔ−ブチルシクロヘキシル（メタ）アクリレ
ートとこれと共重合可能な他のモノマーとの混合モノマ
ーを、ベンゾイルペルオキシド、ｔｅｒｔ〜ブチルペル
オキシオクトエートなどの過酸化物やアゾビスイソブチ
ロニトリルの如きアゾ系化合物などの適宜の重合開始剤
を用いて、常法に準じて重合または共重合させることに
より、得ることができる。重合方法は、溶液重合法、塊
状重合法、エマルジョン重合法、けんだく重合法などの
公知の各種方法を採用できる。In the present invention, the specific polymer as described above is ter
A monomer of t-butylcyclohexyl (meth)acrylate alone or a mixture of tert-butylcyclohexyl (meth)acrylate and other monomers copolymerizable with it is mixed with a peroxide such as benzoyl peroxide, tert-butylperoxyoctoate, or azo It can be obtained by polymerization or copolymerization according to a conventional method using an appropriate polymerization initiator such as an azo compound such as bisisobutyronitrile. As the polymerization method, various known methods such as a solution polymerization method, a bulk polymerization method, an emulsion polymerization method, and a drop polymerization method can be employed.
重合温度は上記の重合方法や用いる重合開始剤の種類な
どにより異なるが、一般には３０〜１５０℃、特に好適
には５０〜１３０℃程度とするのがよい。Although the polymerization temperature varies depending on the above polymerization method and the type of polymerization initiator used, it is generally about 30 to 150°C, particularly preferably about 50 to 130°C.
このようにして得られるｔｅｒｔ−ブチルシクロヘキシ
ル（メタ）アクリレートのホモポリマーまたはＬｅｒｔ
−ブチルシクロヘキシル（メタ）アクリレートとこれと
共重合可能な他の七ツマ−とのコポリマーは、木材への
含浸性、含浸後のしみだし性、含浸木材の寸法安定性な
どの観点から、その平均分子量が通常１，０００〜１０
０，０００の範囲、好適には５，０００〜５０，０００
の範囲にあるのが適当である。The homopolymer of tert-butylcyclohexyl (meth)acrylate or Lert
-A copolymer of butyl cyclohexyl (meth)acrylate and other copolymers that can be copolymerized with it has been evaluated from the viewpoints of impregnating properties into wood, oozing properties after impregnation, and dimensional stability of impregnated wood. Molecular weight is usually 1,000 to 10
0,000, preferably 5,000 to 50,000
It is appropriate that it be within the range of .
本発明において、上記の如き特定のポリマーはこれを通
常適宜の有機溶媒に溶解させた溶液とし、この溶液を木
材に含浸させるようにするのが一般的である。この点か
らすれば、前記の重合または共重合を溶液重合法で行い
、この方法で得たポリマー溶液をそのままあるいは有機
溶媒で希釈して木材含浸用の溶液として使用に供するの
が望ましい。In the present invention, the above-mentioned specific polymer is generally dissolved in a suitable organic solvent to form a solution, and the solution is impregnated into wood. From this point of view, it is desirable to carry out the above polymerization or copolymerization by a solution polymerization method, and to use the polymer solution obtained by this method as it is or after diluting it with an organic solvent as a solution for impregnating wood.
ポリマー溶液とするための有機溶媒としては、メタノー
ル、エタノール、アセトン、メチルエチルケトン、メチ
ルイソブチルケトン、テトラヒドロフラン、ジオキサン
、酢酸エチル、酢酸ブチルなどの極性溶媒のほか、トル
エン、キシレンなどの非極性溶媒が挙げられる。これら
溶媒は、本発明の目的とする低ポリマー保持率ですぐれ
た寸法安定性を得るために、溶液中のポリマー濃度が通
常５〜５０重量％、好適には１０〜３０重星％となる割
合で使用するのがよい。Examples of organic solvents for forming a polymer solution include polar solvents such as methanol, ethanol, acetone, methyl ethyl ketone, methyl isobutyl ketone, tetrahydrofuran, dioxane, ethyl acetate, and butyl acetate, as well as nonpolar solvents such as toluene and xylene. . These solvents are used in a proportion such that the polymer concentration in the solution is usually 5 to 50% by weight, preferably 10 to 30% by weight, in order to obtain excellent dimensional stability with a low polymer retention rate, which is the objective of the present invention. It is best to use .
なお、上記のポリマー溶液中には、必要に応じて他の添
加剤、たとえば防腐剤、防虫剤、染料、顔料、紫外線吸
収剤などのこの発明の目的を阻害しないような物質を加
えてもよい。In addition, other additives such as preservatives, insect repellents, dyes, pigments, ultraviolet absorbers, and other substances that do not impede the purpose of the present invention may be added to the above polymer solution as necessary. .
木材への含浸に際しては、まず木材に自然乾燥、加熱乾
燥または減圧下で加熱乾燥するなどの乾燥処理を施して
、木材中の水分含有量を８〜１８重量％重量％箱囲に調
湿する。ついで、この木材を減圧容器内に密封し、器内
を真空ポンプなどで減圧して木材中の気体を除去したの
ち、木材が完全にポリマー溶液に浸るようにこの器内に
ポリマー溶液を投入し、器内を大気圧に戻す。これによ
り、上記溶液は木材の空隙部内に含浸される。この含浸
を容易にするために、加圧含浸を併用するようにしても
よい。When impregnating wood, the wood is first subjected to a drying process such as air drying, heat drying, or heat drying under reduced pressure to adjust the moisture content in the wood to 8 to 18% by weight. . Next, this wood is sealed in a vacuum container, and after reducing the pressure inside the container with a vacuum pump to remove the gas in the wood, the polymer solution is poured into the container so that the wood is completely immersed in the polymer solution. , return the inside of the vessel to atmospheric pressure. As a result, the solution is impregnated into the voids of the wood. In order to facilitate this impregnation, pressure impregnation may also be used.
このようにして含浸させたのち、自然乾燥、加熱乾燥ま
たは減圧乾燥などの乾燥処理を施して、溶媒を木材より
除去することにより、木材中に前記特定のポリマーが含
浸保持されたＷＰＣを得ることができる。このＷＰＣの
ポリマー保持率は、一般に５〜４０重星％、特に１０〜
３０重四％程度という前記従来の処理方法に比し非常に
少量に設定することができ、これにより各種用途に充分
に応用できる良好な寸法安定性が得られる。もちろん、
ＷＰＣの用途目的に応じてその物性向上の観点からまた
より高度の寸法安定性を図るために、上記よりもさらに
高めのポリマー保持率、たとえば５０重量％程度まで、
さらには１１０重量％程度までの高い保持率に設定する
ことも可能である。After being impregnated in this manner, the solvent is removed from the wood by drying such as natural drying, heat drying, or reduced pressure drying, thereby obtaining WPC in which the specific polymer is impregnated and retained in the wood. Can be done. The polymer retention rate of this WPC is generally 5 to 40%, especially 10 to 40%.
The amount can be set to a much smaller amount than the conventional processing method, which is about 30% by weight, and thereby provides good dimensional stability that can be sufficiently applied to various uses. of course,
Depending on the purpose of use of WPC, in order to improve its physical properties and to achieve a higher degree of dimensional stability, the polymer retention rate may be higher than the above, for example, up to about 50% by weight.
Furthermore, it is also possible to set the retention rate as high as about 110% by weight.
なお、本明細書において、ポリマー保持率とは、ｗｐｃ
を構成する木材に対する同ポリマーの重量割合、つまり
下記の式にて算出される値を意味するものである。In addition, in this specification, polymer retention rate is wpc
It means the weight ratio of the same polymer to the wood constituting it, that is, the value calculated by the following formula.
ｘ：ｗｐｃの絶乾重量
Ｙ：未処理木材の絶乾重量
〔発明の効果〕
以上のように、本発明の方法によれば、経口的に複合体
の表面にポリマーが溶出しぬれの現象が現れてその後の
塗装が困難となるといった問題やポリマー保持率に起因
した重量の増加、生産コストの増大といった問題をきた
すことなく、木材特有の吸湿膨潤あるいは放湿収縮が大
きく抑制された、すぐれた寸法安定性を示すＷＰＣを工
業的有利に製造できる。x: absolute dry weight of wpc Y: absolute dry weight of untreated wood [Effects of the invention] As described above, according to the method of the present invention, the polymer dissolves orally onto the surface of the composite and the phenomenon of wetting occurs. It is an excellent product that greatly suppresses the moisture absorption swelling and moisture release shrinkage characteristic of wood, without causing problems such as the appearance of the oil and subsequent painting, the increase in weight due to polymer retention, and the increase in production costs. WPC exhibiting dimensional stability can be produced industrially with advantage.
したがって、本発明の方法にて得られるＷＰＣは、常に
湿気と乾燥にみまわれる外壁や床材、木製美術品やその
他寸法安定性が高度に要求される建築材料などに特に好
適であり、またこれら以外の各種用途にも広く使用する
ことができる。Therefore, WPC obtained by the method of the present invention is particularly suitable for use in external walls and flooring materials that are constantly subject to humidity and dryness, wooden works of art, and other building materials that require a high level of dimensional stability. It can also be widely used for various other purposes.
つぎに、本発明の実施例を部数してより具体的に説明す
る。なお、以下の実施例で使用した木材含浸用のポリマ
ー溶液Ａ−Ｄ、および比較例、イ吏用した木材含浸用の
ポリマー溶液Ｅ、Ｆは、それぞれ下記の方法で調製した
ものである。文中、部とあるは重量部を意味するもので
ある。Next, embodiments of the present invention will be described in more detail. The polymer solutions A to D for impregnating wood used in the following Examples and the polymer solutions E and F for impregnating wood used in Comparative Examples and I were prepared by the following methods, respectively. In the text, parts mean parts by weight.
〈ポリマー溶液Ａ〉
撹拌装置、温度計および冷却器を備えた四つロフラスコ
に、キシレン２１０部を仕込み、内部を窒素置換したの
ち、撹拌しながら昇温しでキシレンを還流させた。還流
開始後、ｔｅｒｔ−ブチルシクロヘキシルメタクリレー
ト５９部とメチルメタクリレート４５０部とｔ ｅ ｒ
、 ｔ−ブチルペルオキシオクトエート１２部との混合
溶液を２．５時間を要して滴下した。その間、還流温度
を維持するように制御した。滴下終了後、還流下に１時
間や成したのち、ｔ ｅ ｒ、 ｔ−ブチルペルオキシ
オクトエ−）１２部とトルエイ４０部との混合溶液を投
入し、さらに１時間還流下に熟成を行った。冷却後アル
ミバットにあけ真空乾燥話中で脱溶媒を行った。得られ
たポリマーをアセトンに溶解して１５重量％の溶液とし
た。なお、ポリマーの平均分子量は１９．０００であっ
た。<Polymer solution A> 210 parts of xylene was charged into a four-hole flask equipped with a stirrer, a thermometer, and a condenser, and after the interior was replaced with nitrogen, the temperature was raised while stirring to reflux the xylene. After starting reflux, 59 parts of tert-butylcyclohexyl methacrylate, 450 parts of methyl methacrylate and tert-butylcyclohexyl methacrylate were added.
, and 12 parts of t-butylperoxyoctoate was added dropwise over a period of 2.5 hours. During this time, the reflux temperature was controlled to be maintained. After the dropwise addition was completed, the mixture was kept under reflux for 1 hour, and then a mixed solution of 12 parts of t-butylperoxyoctoate and 40 parts of toluray was added, and the mixture was further aged under reflux for 1 hour. . After cooling, it was poured into an aluminum vat and the solvent was removed during vacuum drying. The obtained polymer was dissolved in acetone to form a 15% by weight solution. Note that the average molecular weight of the polymer was 19.000.
くポリマー溶液Ｂ〉
攪拌装置９、温度針および冷却器を備えた四つロフラス
コに、キシレン２１０部を仕込み、内部を窒素置換した
のち、攪拌しながら昇温しでキシレンを還流させた。還
流開始後、ｔｅｒｔ−ブチルシクロヘキシルアクリレー
ト１００３部とメチルメタクリレート３５０部と２−ヒ
ドロキシエチルメタクリレート５０部およびｔｅｒｔ−
ブチルペルオキシオクトエ−上１２部との混合溶液を２
．５時間を要して滴下した。その間、還流温度を維持す
るように制御した０滴下終了後、還流下に１時間熟成し
たのち、ｔｅｒｔ−ブチルペルオキシオクトエ−）１２
部とトルエン４０部との混合溶液を投入し、さらに１時
間還流下に熟成を行った。冷却後アルミバットにあけ真
空乾燥話中で脱溶媒を行った。得られたボリア−をアセ
トンに溶解して２０重量％の溶液とした。なお、ポリ？
−（７） 平１’＝３分子量は１８，０００であった
。Polymer Solution B> 210 parts of xylene was charged into a four-hole flask equipped with a stirrer 9, a temperature needle, and a condenser, and the interior was purged with nitrogen, and the temperature was raised while stirring to reflux the xylene. After the start of reflux, 1003 parts of tert-butylcyclohexyl acrylate, 350 parts of methyl methacrylate, 50 parts of 2-hydroxyethyl methacrylate, and tert-butylcyclohexyl acrylate were added.
Add 2 parts of a mixed solution of butyl peroxyoctoate and 12 parts of the top.
．． The dropwise addition took 5 hours. During that time, the reflux temperature was controlled to maintain the temperature. After the completion of the 0 dropwise addition, the mixture was aged under reflux for 1 hour, and then tert-butylperoxyoctoate)
A mixed solution of 50 parts and 40 parts of toluene was added thereto, and the mixture was further aged under reflux for 1 hour. After cooling, it was poured into an aluminum vat and the solvent was removed during vacuum drying. The obtained boria was dissolved in acetone to make a 20% by weight solution. Furthermore, poly?
-(7) Hei 1'=3 molecular weight was 18,000.
〈ポリマー溶液Ｃ〉
攪拌装置、温度計および冷却器を備えた四つ目フラＸ：
ＩＣ、キシレン２１０部を仕込み、内部を窒素置換した
のち１．攪拌しながら昇温しでキシレンを還流させた。<Polymer solution C> Four-eyed Fura X equipped with a stirrer, thermometer and cooler:
After charging IC and 210 parts of xylene and replacing the inside with nitrogen, 1. While stirring, the temperature was raised to reflux the xylene.
還流−始後、・ｔｅｒｔブチルシクロ今キシルフキシル
メタクリレート２ｃ！０メタクリレート２５、ＱＱＢ＋
６ ｔ ｅ ｒ Ｌ−ブチルペルオキシオクトエート１
２．部との混合溶液を２，５時間を要して滴下した。After refluxing, tertbutylcyclonow xylfuxyl methacrylate 2c! 0 methacrylate 25, QQB+
6 ter L-butyl peroxyoctoate 1
2. A mixed solution of 50% was added dropwise over a period of 2.5 hours.
その間、還流温庫牽竺持するように制御した。滴下終了
後、還流下に１時間熟成したのち、ｔｅｒｔ−ブチルペ
ルオキシオクトエート１２部とトルエン４０卵との混合
溶液を投入し、さらに１時間還連下に熟成を行った．冷
却後アルミバット←あけ真空乾燥話中で脱溶媒を行った
。得られたポリマーをアセトンに溶解して１５重量％の
溶液とした。なお、ポリマーの平均分子量は２２，００
０であった。 、。During this time, the reflux temperature chamber was kept in check. After the addition was completed, the mixture was aged under reflux for 1 hour, and then a mixed solution of 12 parts of tert-butylperoxyoctoate and 40 eggs of toluene was added, and the mixture was further aged under reflux for 1 hour. After cooling, an aluminum vat was opened and the solvent was removed during vacuum drying. The obtained polymer was dissolved in acetone to form a 15% by weight solution. The average molecular weight of the polymer is 22,00
It was 0. ,.
くポリマー溶液Ｄ〉
攪拌装置，温度計および冷却器を備えた四つロフラスコ
に、キシレン２１０部を仕込み、内部を窒素置換したの
ち、攪拌しながら昇温しでキシレンを還流させた。還流
開始後、ｔｅｒｔ−ブチルシクロヘキシルメタクリに一
ト５００部とｔａｒｔ−ブチルペルオキシオクトエート
１２部との混合溶液を２．５時間を要して滴下した。そ
の間、還流温度を維持するように制御した。滴下終了後
、還流下に１時間熟成したのち、ｔｅｒｔ−ブチルペル
オキシオクトエート１２部とトルエン４０部との混合溶
液を投入し、さらに１時間還流下に熟成を行った。冷却
後アルミバットにあけ真空乾燥話中で脱溶媒を行った．
得られたポリマーをアセトンに溶解して２０重量％の溶
液とした。なお、ポリマーの平均分子量は２０．０００
であった。Polymer Solution D> 210 parts of xylene was charged into a four-hole flask equipped with a stirrer, a thermometer, and a condenser, and the interior was purged with nitrogen, and the temperature was raised while stirring to reflux the xylene. After the start of reflux, a mixed solution of 500 parts of tart and 12 parts of tart-butylperoxyoctoate was added dropwise to tert-butylcyclohexyl methacrylate over 2.5 hours. During this time, the reflux temperature was controlled to be maintained. After the dropwise addition was completed, the mixture was aged under reflux for 1 hour, and then a mixed solution of 12 parts of tert-butylperoxyoctoate and 40 parts of toluene was added, and the mixture was further aged under reflux for 1 hour. After cooling, it was poured into an aluminum vat and the solvent was removed during vacuum drying.
The obtained polymer was dissolved in acetone to form a 20% by weight solution. In addition, the average molecular weight of the polymer is 20.000
Met.
・、〈ずリマー溶液Ｅ〉
攪拌装置，温度計および冷却器を備えた四つロフラスコ
に、キシレン２１０部を仕込み、内部を窒素置換したの
ち、攪拌しなから昇温しでキシレンを還流させた。還流
開始後、メチルメタクリレ−ト５００部とｔｅｒｔ−ブ
チルペルオキシオクトエート１２部との混合溶液を２．
５時間を要して滴下した。その間、還流温度を維持する
ように制御した。滴下終了後、還流下に１時間熟成した
のち、ｔｅｒｔ−ブチルペルオキシオクトエート１２部
とトルエン４０部との混合溶液を投入し、さらに１時間
還流下に熟成を行った。冷却後アルミハツトにあけ真空
乾燥品中で脱溶媒を行った。得られたポリマーをアセト
ンに溶解して１５重量％の溶液とした。なお、ポリマー
の平均分子量は、１７．０００であった。・〈Zurimer solution E〉 210 parts of xylene was charged into a four-bottle flask equipped with a stirrer, a thermometer, and a condenser, and after replacing the inside with nitrogen, the xylene was refluxed by raising the temperature without stirring. . After starting reflux, 2.0 parts of a mixed solution of 500 parts of methyl methacrylate and 12 parts of tert-butyl peroxyoctoate was added.
The dropwise addition took 5 hours. During this time, the reflux temperature was controlled to be maintained. After the dropwise addition was completed, the mixture was aged under reflux for 1 hour, and then a mixed solution of 12 parts of tert-butylperoxyoctoate and 40 parts of toluene was added, and the mixture was further aged under reflux for 1 hour. After cooling, it was poured into an aluminum hat and the solvent was removed in a vacuum-dried product. The obtained polymer was dissolved in acetone to form a 15% by weight solution. Note that the average molecular weight of the polymer was 17.000.
〈ポリマー溶液Ｆ〉
撹拌装置、温度計および冷却器を備えた四つロフラスコ
に、キシレン６１０部を仕込み、内部を窒素置換したの
ち、攪拌しながら昇温してキシレンを還流させた。還流
開始後、スチレン１００部とｔｅｒｔ−ブチルペルオキ
シオクトエート２部との混合溶液を２．５時間を要して
滴下した。その間、還流温度を維持するように制御した
。滴下終了後、還流下に１時間熟成したのち、ｔｅｒｔ
−ブチルペルオキシオクトエート２部とトルエン４０部
との混合溶液を投入し、さらに１時間還流下に熟成を行
った。冷却後アルミバットにあけ真空乾燥品中で脱溶媒
を行った。得られたポリマーをアセトンに溶解して２０
重量％の溶液とした。なお、ポリマーの平均分子量は、
２２．０００であった。<Polymer solution F> 610 parts of xylene was charged into a four-hole flask equipped with a stirrer, a thermometer, and a condenser, and after the interior was replaced with nitrogen, the temperature was raised while stirring to reflux the xylene. After the reflux started, a mixed solution of 100 parts of styrene and 2 parts of tert-butylperoxyoctoate was added dropwise over 2.5 hours. During this time, the reflux temperature was controlled to be maintained. After the dropwise addition was completed, it was aged under reflux for 1 hour, and then tert.
A mixed solution of 2 parts of -butyl peroxyoctoate and 40 parts of toluene was added, and the mixture was further aged under reflux for 1 hour. After cooling, it was poured into an aluminum vat and the solvent was removed in a vacuum-dried product. The obtained polymer was dissolved in acetone for 20
% solution by weight. The average molecular weight of the polymer is
It was 22,000.
実施例１
接線方向１０ｍｍ、半径方向７０１．繊維方向１３０１
ＩＩＩＩ＋に寸法取りした含水率１３重量％のヒノキ柾
目材をデシケータ−中に入れて１０ｍｍＨｇに減圧した
。このデシケータ−中に、ポリマー溶液Ａを投入し、５
分間減圧含浸させたのち、常圧に戻して１０分間静置し
、その後デシケータ−より取り出した。Example 1 Tangential direction: 10 mm, radial direction: 701. Fiber direction 1301
A straight-grained Japanese cypress with a moisture content of 13% by weight and dimensioned to be III+ was placed in a desiccator and the pressure was reduced to 10 mmHg. Pour polymer solution A into this desiccator and
After being impregnated under reduced pressure for a minute, the pressure was returned to normal and allowed to stand for 10 minutes, and then taken out from the desiccator.
この含浸木材を２４時間風乾後、８０℃で１６時間乾燥
して、絶乾試料としてのｗｐｃを得た。This impregnated wood was air-dried for 24 hours and then dried at 80° C. for 16 hours to obtain wpc as an absolutely dry sample.
このＷＰＣのポリマー保持率は２０．８重量％であった
。なお、ポリマー保持率の算出にあたって、未処理木材
を上記と全く同様に乾燥処理してこれの絶乾重量を求め
、これと上記ｗｐｃの絶乾重量とより、既述の方法にて
算出した。The polymer retention rate of this WPC was 20.8% by weight. In addition, in calculating the polymer retention rate, the untreated wood was dried in exactly the same manner as above to obtain its absolute dry weight, and the calculation was performed using the above-mentioned method from this and the absolute dry weight of the wpc.
実施例２
接線方向１０ｍｍ、半径方向７０ｍｎ＋、繊維方向１３
０ｍｍに寸法取りした含水率１１重量％のナラ柾目材を
デシケータ−中に入れてｌＯｍｍＨｇに減圧した。この
デシケータ−中に、ポリマー溶液Ｂを投入し、５分間減
圧含浸させたのち、常圧に戻して１０分間静置し、その
後デシケータ−より取り出した。Example 2 Tangential direction 10mm, radial direction 70mm+, fiber direction 13
Straight-grained oak with a moisture content of 11% by weight and dimensioned to 0 mm was placed in a desiccator and the pressure was reduced to 10 mmHg. Polymer solution B was put into this desiccator and impregnated under reduced pressure for 5 minutes, then returned to normal pressure and allowed to stand for 10 minutes, and then taken out from the desiccator.
この含浸木材を２４時間風乾後、８０℃で１６時間乾燥
して、絶乾試料としてのｗｐｃを得た。This impregnated wood was air-dried for 24 hours and then dried at 80° C. for 16 hours to obtain wpc as an absolutely dry sample.
このＷＰＣのポリマー保持率は１９．３重量％であった
。なお、ポリマー保持率の算出にあたって、未処理木材
を上記と全く同様に乾燥処理してこれの絶乾重量を求め
、これと上記ｗｐｃの絶乾重量とより、既述の方法にて
算出した。The polymer retention rate of this WPC was 19.3% by weight. In addition, in calculating the polymer retention rate, the untreated wood was dried in exactly the same manner as above to obtain its absolute dry weight, and the calculation was performed using the above-mentioned method from this and the absolute dry weight of the wpc.
実施例３
接線方向１０ｍｍ、半径方向７０ｍｍ、繊維方向１３０
ｍｍに寸法取りした含水率８重量％のアガチス柾目材を
デシケータ−中に入れてｌＯｍｍＨｇに減圧した。この
デシケータ−中に、ポリマー溶液Ｃを投入し、５分間減
圧含浸させたのち、常圧に戻して１０分間静置し、その
後デシケータ−より取り出した。Example 3 Tangential direction: 10 mm, radial direction: 70 mm, fiber direction: 130 mm
Agathis straight-grained material having a water content of 8% by weight and having a size of 1 mm was placed in a desiccator and the pressure was reduced to 10 mmHg. Polymer solution C was put into this desiccator and impregnated under reduced pressure for 5 minutes, then returned to normal pressure and left to stand for 10 minutes, and then taken out from the desiccator.
この含浸木材を２４時間風乾後、８０℃で１６時間乾燥
して、絶乾試料としてのｗｐｃを得た。This impregnated wood was air-dried for 24 hours and then dried at 80° C. for 16 hours to obtain wpc as an absolutely dry sample.
このＷＰＣのポリマー保持率は２６．９重量％であった
。なお、ポリマー保持率の算出にあたって、未処理木材
を上記と全く同様に乾燥処理してこれの絶乾重量を求め
、これと上記ｗｐｃの絶乾重量とより、既述の方法にて
算出した。The polymer retention rate of this WPC was 26.9% by weight. In addition, in calculating the polymer retention rate, the untreated wood was dried in exactly the same manner as above to obtain its absolute dry weight, and the calculation was performed using the above-mentioned method from this and the absolute dry weight of the wpc.
実施例４
接線方向１０ｍｍ、半径方向７０ｍｍ、繊維方向１３０
ｍｍに寸法取りした含水率１３重量％のヒノキ柾目材を
デシケータ−中に入れて１０ｍｍＨｇに減圧した。この
デシケータ−中に、ポリマー溶液りを投入し、５分間減
圧含浸させたのち、常圧に戻して１０分間静置し、その
後デシケータ−より取り出した。Example 4 Tangential direction: 10 mm, radial direction: 70 mm, fiber direction: 130 mm
A straight-grained Japanese cypress material with a moisture content of 13% by weight, which was measured in mm, was placed in a desiccator and the pressure was reduced to 10 mmHg. A polymer solution was put into this desiccator, and after being impregnated under reduced pressure for 5 minutes, the pressure was returned to normal and left standing for 10 minutes, and then taken out from the desiccator.
この含浸木材を２４時間風乾後、８０℃で１６時間乾燥
して、絶乾試料としてのｗｐｃを得た。This impregnated wood was air-dried for 24 hours and then dried at 80° C. for 16 hours to obtain wpc as an absolutely dry sample.
このＷＰＣのポリマー保持率は２４．１重量％であった
。なお、ポリマー保持率の算出にあたって、未処理木材
を上記と全く同様に乾燥処理してこれの絶乾重量を求め
、これと上記ＷＰＣの絶乾重量とより、既述の方法にて
算出した。The polymer retention rate of this WPC was 24.1% by weight. In addition, in calculating the polymer retention rate, untreated wood was dried in exactly the same manner as above to obtain its absolute dry weight, and the calculation was performed using the above-mentioned method from this and the absolute dry weight of the WPC.
比較例１
接線方向１０ｍｍ、半径方向７０１．繊維方向１３０ｍ
ｍに寸法取りした含水率１３重量％のヒノキ柾目材をデ
シケータ−中に入れて１０ｍｍ１１ｇに減圧した。この
デシケータ−中に、ポリマー溶液Ｅを投入し、５分間減
圧含浸させたのち、常圧に戻して１０分間静置し、その
後デシケータ−より取り出した。Comparative Example 1 Tangential direction: 10 mm, radial direction: 701. Fiber direction 130m
A straight-grained Japanese cypress material with a water content of 13% by weight, which had been measured to a size of 1.5 mm, was placed in a desiccator and the pressure was reduced to 10 mm and 11 g. Polymer solution E was put into this desiccator and impregnated under reduced pressure for 5 minutes, then returned to normal pressure and left to stand for 10 minutes, and then taken out from the desiccator.
この含浸木材を２４時間風乾後、８０℃で１６時間乾燥
して、絶乾試料としてのｗｐｃを得た。This impregnated wood was air-dried for 24 hours and then dried at 80° C. for 16 hours to obtain wpc as an absolutely dry sample.
このＷＰＣのポリマー保持率は２４．６重量％であった
。なお、ポリマー保持率の算出にあたって、未処理木材
を上記と全く同様に乾燥処理してこれの絶乾重量を求め
、これと上記ＷＰＣの絶乾重量とより、既述の方法にて
算出した。The polymer retention rate of this WPC was 24.6% by weight. In addition, in calculating the polymer retention rate, untreated wood was dried in exactly the same manner as above to obtain its absolute dry weight, and the calculation was performed using the above-mentioned method from this and the absolute dry weight of the WPC.
比較例２
接線方向１０ｍｍ、半径方向７０ｍｍ、繊維方向１３０
ｍｎ＋に寸法取りした含水率８重量％のヒノキ柾目材を
デシケータ−中に入れて１０ｍｍ１ｌ’ｇに減圧した。Comparative example 2 Tangential direction 10mm, radial direction 70mm, fiber direction 130
A straight-grained Japanese cypress tree with a water content of 8% by weight and dimensioned to mn+ was placed in a desiccator and the pressure was reduced to 10 mm/1 g.
このデシケータ−中に、ポリマー？容？＆Ｆを投入し、
５分間減圧含浸させたのち、常圧に戻して１０分間静置
し、その後デシケータ−より取り出した。Is there a polymer in this desiccator? Yong? Insert &F,
After being impregnated under reduced pressure for 5 minutes, the pressure was returned to normal and left to stand for 10 minutes, and then taken out from the desiccator.
この含浸木材を２４時間風乾後、８０℃で１６時間乾燥
して、絶乾試料としてのｗｐｃを得た。This impregnated wood was air-dried for 24 hours and then dried at 80° C. for 16 hours to obtain wpc as an absolutely dry sample.
このＷＰＣのポリマー保持率は２６．８重量％であった
。なお、ポリマー保持率の算出にあたって、未処理木材
を上記と全く同様に乾燥処理してこれの絶乾重量を求め
、これと上記ｗｐｃの絶乾重量とより、既述の方法にて
算出した。The polymer retention rate of this WPC was 26.8% by weight. In addition, in calculating the polymer retention rate, the untreated wood was dried in exactly the same manner as above to obtain its absolute dry weight, and the calculation was performed using the above-mentioned method from this and the absolute dry weight of the wpc.
以上の実施例および比較例に係る各ＷＰＣにつき、吸水
率および体積膨潤率を測定し、これら測定値から各ｗｐ
ｃの抗吸水能（ＲＷＡ）および抗膨潤能（ＡＳＥ）を調
べた結果は、後記の第１表に示されるとおりであった。The water absorption rate and volume swelling rate of each WPC according to the above examples and comparative examples were measured, and from these measured values, each wp
The results of examining the anti-water absorption capacity (RWA) and anti-swelling capacity (ASE) of C were as shown in Table 1 below.
なお、吸水率および体積膨潤率の測定は、つぎの方法に
て行った。Note that the water absorption rate and volumetric swelling rate were measured by the following method.
〈吸水率〉
絶乾試料としてのｗｐｃを、２０℃の水中に完全に浸漬
して所定日数放置し、放置後の重量（Ｘｔ）と放置前の
絶乾型ｆｆｌ （Ｘ）とから、下記の式にて算出した。<Water absorption rate> WPC as an absolutely dry sample was completely immersed in water at 20°C and left for a predetermined number of days, and from the weight after standing (Xt) and the absolutely dry type ffl (X) before standing, the following was calculated. Calculated using the formula.
〈体積膨潤率〉
絶乾試料としてのｗｐｃを、２０℃の水中に完全に浸漬
して所定日数放置し、放置後の体積（Ｍｔ）と放置前の
体積（Ｍ）とから、下記の式にて算出した。<Volume swelling rate> WPC as an absolutely dry sample is completely immersed in water at 20°C and left for a predetermined number of days, and from the volume after standing (Mt) and the volume before standing (M), the following formula is calculated. Calculated.
また、抗吸水能（ＲＷＡ）および抗膨潤能（ＡＳＥ）は
、上記ｗｐｃの場合と同様にして未処理木材の吸水率お
よび体積膨潤率を測定し、これとＷＰＣのの吸水率およ
び体積膨潤率とから、下記の式により算出した。In addition, anti-water absorption capacity (RWA) and anti-swelling capacity (ASE) are determined by measuring the water absorption rate and volumetric swelling rate of untreated wood in the same manner as in the case of WPC above, and comparing this with the water absorption rate and volumetric swelling rate of WPC. It was calculated using the following formula.
ｖｃ
ｖｃ
ＷＣ：未処理木材の吸水率
ｗｔ ：ＷＰＣの吸水率
ｖｃ：未処理木材の体積膨潤率
Ｖｔ：ＷＰＣの体積膨潤率
なお、吸水率および体積膨潤率の測定における放置日数
は、それぞれ４日および７日としたが、上述の測定条件
にて算出される吸水率および体積膨潤率は、一般に約１
週間後に平衡に達するものである。vc vc WC: Water absorption rate of untreated wood wt: Water absorption rate of WPC vc: Volumetric swelling rate of untreated wood Vt: Volumetric swelling rate of WPC Note that the number of days left for measurement of water absorption rate and volumetric swelling rate was 4 days, respectively. and 7 days, but the water absorption rate and volumetric swelling rate calculated under the above measurement conditions are generally about 1
Equilibrium is reached after a week.
第１表
上記第１表の結果からも明らかなように、実施例１〜４
に係るｗｐｃは、ポリマー保持率が約２０〜３０重量％
の範囲にあるにもかかわらず、すぐれた寸法安定性を示
すのに対して、比較例１゜２に係るＷＰＣは、ポリマー
保持率が２０〜３０重量％の範囲の低含浸率では良好な
寸法安定性を示さないものであることが判る。Table 1 As is clear from the results in Table 1 above, Examples 1 to 4
The WPC has a polymer retention rate of about 20 to 30% by weight.
In contrast, the WPC according to Comparative Example 1゜2 shows good dimensional stability at a low impregnation rate in the range of 20 to 30 wt% polymer retention. It can be seen that it does not exhibit stability.
なお、上記実施例１〜４に係るＷＰＣは、これを常温常
温下に長期間放置しておいても経口的にＷＰＣの表面に
ぬれの現象が現れることはなく、したがって上記放置後
にＷＰＣの表面に通常の塗装を行っても塗装が困難とな
るといった問題は全く生じなかった。Note that the WPCs according to Examples 1 to 4 do not orally exhibit any wetting phenomenon on the surface of the WPC even if they are left at room temperature for a long period of time. Even when normal painting was applied to the surface, no problems such as difficulty in painting occurred.
特許出願人 日本油脂株式会社Patent applicant: NOF Corporation
Claims (1)
タ）アクリレートのホモポリマーまたはｔｅｒｔ−ブチ
ルシクロヘキシル（メタ）アクリレートとこれと共重合
可能な他のモノマーとのコポリマーを含浸させることを
特徴とする木材−プラスチック複合体の製造方法。(1) Wood characterized by impregnating the wood with a homopolymer of tert-butylcyclohexyl (meth)acrylate or a copolymer of tert-butylcyclohexyl (meth)acrylate and another monomer copolymerizable with it. Method of manufacturing plastic composites.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30649087A JPH01146702A (en) | 1987-12-03 | 1987-12-03 | Manufacture of wood-plastic composite body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30649087A JPH01146702A (en) | 1987-12-03 | 1987-12-03 | Manufacture of wood-plastic composite body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01146702A true JPH01146702A (en) | 1989-06-08 |
Family
ID=17957647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30649087A Pending JPH01146702A (en) | 1987-12-03 | 1987-12-03 | Manufacture of wood-plastic composite body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01146702A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01178511A (en) * | 1988-01-07 | 1989-07-14 | Asahi Chem Ind Co Ltd | Methacrylic copolymer having low hygroscopicity |
-
1987
- 1987-12-03 JP JP30649087A patent/JPH01146702A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01178511A (en) * | 1988-01-07 | 1989-07-14 | Asahi Chem Ind Co Ltd | Methacrylic copolymer having low hygroscopicity |
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