JPH0122877B2 - - Google Patents
Info
- Publication number
- JPH0122877B2 JPH0122877B2 JP57045939A JP4593982A JPH0122877B2 JP H0122877 B2 JPH0122877 B2 JP H0122877B2 JP 57045939 A JP57045939 A JP 57045939A JP 4593982 A JP4593982 A JP 4593982A JP H0122877 B2 JPH0122877 B2 JP H0122877B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- adhesive
- parts
- present
- metals
- 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
Links
- 239000000853 adhesive Substances 0.000 claims description 64
- 230000001070 adhesive effect Effects 0.000 claims description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 21
- 229920005989 resin Polymers 0.000 claims description 18
- 239000011347 resin Substances 0.000 claims description 18
- 239000002023 wood Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 150000002736 metal compounds Chemical class 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 5
- -1 aluminum metals Chemical class 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- 150000002910 rare earth metals Chemical class 0.000 claims description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 150000001340 alkali metals Chemical class 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 10
- 239000011120 plywood Substances 0.000 description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 9
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 7
- 229920001577 copolymer Polymers 0.000 description 6
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 241000209140 Triticum Species 0.000 description 4
- 235000021307 Triticum Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 235000013312 flour Nutrition 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- 240000005636 Dryobalanops aromatica Species 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 229910000410 antimony oxide Inorganic materials 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 229910000358 iron sulfate Inorganic materials 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- 229910000464 lead oxide Inorganic materials 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 2
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000005996 Blood meal Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000011354 acetal resin Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000013053 water resistant agent Substances 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
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
Description
本発明は通常の水性型接着剤では接着が困難と
いわれる難接着木材にも接着力が良好な接着剤組
成物に関するものである。
近年良質な原木の入手が困難となり、質の悪い
原木の比率が大きくなり、これが合板や集成材な
ど木材の加工に大きな障害となつている。
これら難接着木材は通常より多くの樹脂成分を
含んだものであり、例えばカプール、クルイン等
の材種である。これらの木材を良好に接着するた
めには、原木中に含まれる樹脂成分を予め除去す
るために、水またはアルカリ水、界面活性剤を添
加した水等によつて煮沸する方法が実施されては
いるがその実施率は小い。それは処理に多くの時
間と費用が必要なこと、たとえ実施してもその効
果があまり期待できない、等によるものである。
本発明は、難接着木材を何ら特別な処理をする
ことなく、通常の接着条件によつて良好な接着力
特に大きな耐水接着力を得ることのできる接着剤
組成物にある。
本発明者らは、カプール、クルイン等の難接着
木材の接着力、特に耐水接着力を発現し難い原因
がこれら木材中に含まれる水溶性樹脂性分である
ことを解明し、本発明を完成するに到つた。
すなわち、難接着木材であるカプールを100℃
の熱水中で24時間煮沸することにより、木材重量
の５〜８％に相当する水溶性樹脂成分が抽出され
る。しかるに接着性が良好といわれているラワ
ン、セラヤ等の木材の場合は同一条件において煮
沸処理した場合でも0.1〜0.2％程度の抽出成分し
か検出されない。
水溶性樹脂を多く含有する木材を、耐水接着力
が充分なる接着剤で接着した場合も、接着製品が
水ぬれ・・・すれば当然強度の低下をまねき、これら接
着した試験片を熱水中で処理して後耐水接着力を
測定すれば、熱水処理中に水溶性樹脂成分が接着
層からも抽出されてしまい、接着力としての強度
は大はばに低下したものとなる。
本発明者らは、難接着木材中に含有する、特に
接着界面層附近に存在する水溶性樹脂成分を水に
不溶な成分に変えることにより耐水接着力を確保
することを目的として種々研究の結果、ある種の
金属および金属化合物等がこれらの目的を満足す
ること解明した。
これらの金属および金属化合物等は本発明に使
用する接着剤に配合することにより達成される。
これらは、水不溶性のものであれば充てん剤ま
たは増量剤としても有効である。
本発明に効果のある金属および金属化合物等と
は、アルカリ金属、アルミ金属、希土類金属およ
びこれらの化合物を徐く金属の粉末あるいは金属
化合物であり例えば鉄粉、酸化鉄、酸化亜鉛、酸
化鉛、酸化アンチモン、酸化スズ、硫酸鉄、硫酸
亜鉛、硫酸鉛等でありこれらはそれぞれ１種また
は２種以上の組合せで使用される。
またこれらの金属の粉末あるいは金属化合物の
水性接着剤に対する配合量は水性接着剤100重量
部に対して１部以上配合で効果を発現する。これ
らは予め水性接着剤に配合しておいてもよいが接
着剤を使用する直前に他の架橋剤や硬化剤と共に
配合して使用しても差支えない。
本発明に使用する金属の粉末あるいは金属化合
物が、難接着木材中に含有する水溶性樹脂成分を
不溶化する機構は明らかではないがキレート反応
による結果ではないかと推測される。
本発明において水溶性型樹脂接着剤とは尿素と
ホルマリンとの初期縮合物、メラミンとホルマリ
ンとの初期縮合物、フエノールとホルマリンの初
期縮合物、レゾルシノールとホルマリンの初期縮
合物等の熱硬化性樹脂接着剤、ポリビニルアルコ
ール系樹脂接着剤、ポリビニルアセタール系樹脂
接着剤等の水中に溶解樹脂成分をもつ接着剤をい
う、また水分散型接着剤とはポリ酢酸ビニル、酢
酸ビニルとエチレンの共重合物、ポリスチレン、
ポリアクリル酸エステル、エチレンと塩化ビニル
の共重合物等のエマルジヨン、更にスチレンとブ
タジエンの共重合物、アクリルニトリロとブタジ
エンの共重合物、メタアクリル酸エステルとブタ
ジエンとの共重合物等のラテツクスらであり、重
合樹脂成分を分散剤・安定剤等の助けにより水中
に分散または懸濁させた型の接着剤をいう。
これらの接着剤はそれぞれ１種または２種以上
の組合せで使用されてもよく、またこれらに架橋
剤または硬化剤と称する耐水化剤を配合すること
も差支えない。
特に本発明に使用する水溶性型樹脂接着剤また
は水分散型樹脂接着剤を主体成分とし、これに架
橋剤としてイソシアネート化合物を配合してなる
接着剤において効果が著しい。
また本発明には通常水性型接着剤の配合に使用
される充てん剤、増量剤、防腐剤、消ほう剤、着
色剤、防虫剤等を自由に添加配合することができ
る。
次に本発明を実施例により更に詳しく説明する
が、本実施例により本発明の技術的範囲に何ら制
限を加えるものではない。
実施例 １
メラミンとホルマリンの初期縮合物（豊年製油
社製、LM、48％）28部、尿素とホルマリンとの
初期縮合物（豊年製油社製、UM、48％）45部、
小麦粉14部、接着力増強剤（豊年製油社製）７
部、血粉１部、塩化アンモン１部、水５部をよく
混合して作成した接着剤を、カプールおよびクル
インから作成した単板で、その単板構成が1.8
ｍ／ｍ＋3.3ｍ／ｍ＋1.8ｍ／ｍ（単板水分は７％
＋13％＋７％）に、接着剤の塗布量が416ｇ／m2
になるように中板に接着剤を塗布し、10Kg／cm2−
15分の条件で冷圧締した後、120℃−10Kg／cm2の
条件で２分間熱圧締して本比較例の合板を得た。
別に本実施例に使用した接着剤に鉄粉４部を添
加配合して本発明による接着剤組成物を得た。
この接着剤組成物を使用して本実施例の比較例
と全く同一の条件で合板を作成した。その接着力
の結果を第１表に示す。本発明の接着剤組成物を
使用して作成した合板は特に耐水接着力が優秀で
あつた。
The present invention relates to an adhesive composition that exhibits good adhesion even to hard-to-bond wood, which is said to be difficult to bond with ordinary water-based adhesives. In recent years, it has become difficult to obtain high-quality logs, and the proportion of low-quality logs has increased, creating a major obstacle in the processing of wood such as plywood and laminated wood. These difficult-to-adhesive woods contain more resin components than usual, and are, for example, types such as Kapoor and Cruin. In order to bond these woods well, it is recommended to boil the wood with water, alkaline water, water added with a surfactant, etc. in order to remove the resin components contained in the wood in advance. However, the implementation rate is small. This is due to the fact that the treatment requires a lot of time and money, and even if it is implemented, it is not very effective. The present invention resides in an adhesive composition that can obtain good adhesive strength, particularly high water-resistant adhesive strength, under normal adhesive conditions without any special treatment of hard-to-bond wood. The present inventors completed the present invention by elucidating that the reason why difficult-to-adhesive woods such as kapoor and kuruin have difficulty developing adhesive strength, especially water-resistant adhesive strength, is the water-soluble resin content contained in these woods. I came to the point. In other words, Kapur, which is a difficult-to-bond wood, is heated to 100℃.
By boiling the wood in hot water for 24 hours, a water-soluble resin component corresponding to 5 to 8% of the weight of the wood is extracted. However, in the case of woods such as lauan and seraya, which are said to have good adhesive properties, only about 0.1 to 0.2% of extracted components are detected even when boiled under the same conditions. Even when wood containing a large amount of water-soluble resin is bonded with an adhesive that has sufficient water-resistant adhesion, if the bonded product gets wet, it will naturally reduce its strength, and these bonded test pieces should be placed in hot water. If the water-resistant adhesive strength is measured after treatment with hot water, the water-soluble resin component will also be extracted from the adhesive layer during the hot water treatment, and the adhesive strength will be greatly reduced. The present inventors have conducted various studies aimed at ensuring water-resistant adhesive strength by changing the water-soluble resin component contained in hard-to-bond wood, especially near the adhesive interface layer, to a water-insoluble component. It has been found that certain metals and metal compounds satisfy these objectives. These metals, metal compounds, etc. can be achieved by blending them into the adhesive used in the present invention. These are also effective as fillers or extenders if they are water-insoluble. Metals and metal compounds that are effective in the present invention include powders or metal compounds of metals, including alkali metals, aluminum metals, rare earth metals, and compounds thereof, such as iron powder, iron oxide, zinc oxide, lead oxide, These include antimony oxide, tin oxide, iron sulfate, zinc sulfate, lead sulfate, etc., and each of these is used singly or in combination of two or more. In addition, the effect is achieved when these metal powders or metal compounds are blended in an amount of 1 part or more per 100 parts by weight of the water-based adhesive. These may be blended into the water-based adhesive in advance, but they may also be blended with other crosslinking agents and curing agents immediately before using the adhesive. The mechanism by which the metal powder or metal compound used in the present invention insolubilizes the water-soluble resin component contained in hard-to-adhesive wood is not clear, but it is presumed to be the result of a chelate reaction. In the present invention, water-soluble resin adhesives are thermosetting resins such as initial condensates of urea and formalin, initial condensates of melamine and formalin, initial condensates of phenol and formalin, and initial condensates of resorcinol and formalin. Adhesives, such as polyvinyl alcohol resin adhesives, polyvinyl acetal resin adhesives, etc., which have resin components dissolved in water, and water-dispersible adhesives include polyvinyl acetate and copolymers of vinyl acetate and ethylene. ,polystyrene,
Emulsions such as polyacrylic esters, copolymers of ethylene and vinyl chloride, latexes such as copolymers of styrene and butadiene, copolymers of acrylonitrile and butadiene, copolymers of methacrylic esters and butadiene, etc. It refers to a type of adhesive in which a polymeric resin component is dispersed or suspended in water with the help of a dispersant, stabilizer, etc. Each of these adhesives may be used alone or in combination of two or more, and a water-resistant agent called a crosslinking agent or a curing agent may also be added thereto. Particularly, the effect is remarkable in an adhesive which is mainly composed of a water-soluble resin adhesive or a water-dispersible resin adhesive used in the present invention, and which is blended with an isocyanate compound as a crosslinking agent. Further, in the present invention, fillers, extenders, preservatives, defrosters, colorants, insect repellents, etc., which are usually used in the formulation of water-based adhesives, can be freely added and blended. Next, the present invention will be explained in more detail with reference to examples, but the technical scope of the present invention is not limited in any way by these examples. Example 1 28 parts of an initial condensate of melamine and formalin (manufactured by Hounen Oil Co., Ltd., LM, 48%), 45 parts of an initial condensate of urea and formalin (manufactured by Hounen Oil Co., Ltd., UM, 48%),
14 parts of wheat flour, adhesive strength enhancer (manufactured by Hounen Seishin Co., Ltd.) 7
1 part blood meal, 1 part ammonium chloride, and 5 parts water.
m/m+3.3m/m+1.8m/m (veneer moisture is 7%
+13%+7%), and the amount of adhesive applied was 416g/m 2
Apply adhesive to the middle plate so that it becomes 10Kg/cm 2 −
After cold pressing for 15 minutes, hot pressing was performed for 2 minutes at 120° C. and 10 kg/cm 2 to obtain plywood of this comparative example. Separately, 4 parts of iron powder was added to the adhesive used in this example to obtain an adhesive composition according to the present invention. Using this adhesive composition, plywood was created under exactly the same conditions as in the comparative example of this example. The adhesive strength results are shown in Table 1. The plywood made using the adhesive composition of the present invention had particularly excellent water-resistant adhesive strength.
【表】
実施例 ２
尿素とホルマリンの初期縮合物（豊年製油社
製、UM、48％）100部、小麦粉10部、水８部、
塩化アンモン１部をよく混合して作成した接着剤
を、カプールから作成した単板で、その単板構成
が0.65ｍ／ｍ＋1.95ｍ／ｍ＋0.65ｍ／ｍ（単板水
分は10％に調整）に、接着剤の塗布量が300ｇ／
m2になるように中板に接着剤を塗布し、10Kg／cm2
−15分の条件で冷圧した後、115℃−10Kg／cm2の
条件で60秒間熱圧締して本比較例の合板を得た。
別に本比較例に使用した接着剤配合中の小麦粉
を５部とし、これに酸化亜鉛粉末10部を添加配合
した他は本比較例と同じ接着剤組成物を作成して
本発明による接着剤組成物とした。
この接着剤組成物を使用して本実施例の比較例
と全く同一の条件で合板を作成した。接着力を測
定した結果を第２表に示す。本発明の接着剤組成
を使用して作成した合板は特に温冷水接着力にお
いて秀れたものであつた。[Table] Example 2 100 parts of an initial condensate of urea and formalin (manufactured by Hounen Oil Co., Ltd., UM, 48%), 10 parts of wheat flour, 8 parts of water,
A veneer made from Kapur with an adhesive made by thoroughly mixing 1 part of ammonium chloride, and the veneer composition is 0.65 m/m + 1.95 m/m + 0.65 m/m (veneer moisture adjusted to 10%). The amount of adhesive applied is 300g/
Apply adhesive to the middle plate so that it is 10Kg/cm 2
The plywood of this comparative example was obtained by cold pressing under the conditions of −15 minutes and then hot pressing under the conditions of 115° C. and 10 kg/cm 2 for 60 seconds. Separately, an adhesive composition according to the present invention was prepared by preparing the same adhesive composition as in this comparative example except that 5 parts of wheat flour was used in the adhesive formulation used in this comparative example, and 10 parts of zinc oxide powder was added and blended. I made it into a thing. Using this adhesive composition, plywood was created under exactly the same conditions as in the comparative example of this example. The results of measuring the adhesive strength are shown in Table 2. Plywood made using the adhesive composition of the present invention was particularly excellent in hot and cold water adhesion.
【表】
なお、酸化亜鉛の代りに塩化アルミ、酸化アル
ミ、希土類金属等添加配合したが全く効果は認め
られなかつた。
実施例 ３
PVA−117（クラレ社製、ケン化度98％、重合
度1750）の12％水溶液20部、スチレンとブタジエ
ンの共重合ラテツククス（日本ゼオン社製、48
％）80部、炭酸カルシウム粉末50部、小麦粉20
部、水40部、MDI（ミリオネートMR、日本ポリ
ウレタン社製）15部をよく混合して作成した接着
剤を本実施例の比較例の接着剤組成物とした。
この接着剤組成物を、カプールから作成した単
板で、その単板構成が実施例１と同じで、しかも
接着剤の塗布量、合板の製造条件等も実施例１と
同様の条件で合板を作成した。別に本比較例の接
着剤組成物の配合中の炭酸カルシウム50部を40部
に変更し、更にこれの代りに酸化亜鉛、硫酸鉄、
酸化アンチモン、酸化鉛、鉄粉、酸化亜鉛と酸化
鉄の等量混合物等をそれぞれ別々に各10部づつ添
加配合したものを本発明の接着剤組成物として比
較例と全く同一の条件で合板を作成した。
これら合板の接着力を測定した結果を第３表に
示す。本発明の接着剤組成物は特に煮沸繰返し接
着力において秀れたものであつた。[Table] Note that aluminum chloride, aluminum oxide, rare earth metals, etc. were added in place of zinc oxide, but no effect was observed at all. Example 3 20 parts of a 12% aqueous solution of PVA-117 (manufactured by Kuraray Co., Ltd., saponification degree 98%, polymerization degree 1750), styrene and butadiene copolymer latex (manufactured by Nippon Zeon Co., Ltd., 48%)
%) 80 parts, calcium carbonate powder 50 parts, wheat flour 20 parts
An adhesive composition of a comparative example of this example was prepared by thoroughly mixing 40 parts of water, 40 parts of water, and 15 parts of MDI (Millionate MR, manufactured by Nippon Polyurethane Co., Ltd.). This adhesive composition was applied to a veneer made from Kapur, and the veneer structure was the same as in Example 1, and the amount of adhesive applied and the plywood manufacturing conditions were also the same as in Example 1. Created. Separately, 50 parts of calcium carbonate in the formulation of the adhesive composition of this comparative example was changed to 40 parts, and zinc oxide, iron sulfate,
Antimony oxide, lead oxide, iron powder, a mixture of equal amounts of zinc oxide and iron oxide, etc. were added separately in 10 parts each to form the adhesive composition of the present invention, and plywood was prepared under exactly the same conditions as the comparative example. Created. Table 3 shows the results of measuring the adhesive strength of these plywood boards. The adhesive composition of the present invention was particularly excellent in repeated boiling adhesive strength.
【表】
なお、比較例の常態接着力は11.5Kg／cm2（65）、
煮沸繰返し接着力は1.5Kg／cm2（０）と低いもの
であつた。
また、希土類金属、アルカリ金属、アルミ化合
物等を添加配合したが全く効果は認められなかつ
た。[Table] The normal adhesive strength of the comparative example is 11.5Kg/cm 2 (65),
The adhesive strength after repeated boiling was as low as 1.5 Kg/cm 2 (0). Furthermore, although rare earth metals, alkali metals, aluminum compounds, etc. were added and blended, no effect was observed at all.
Claims (1)
む難接着木材を接着するための接着剤であつて、
水溶性型樹脂接着剤、水分散型樹脂接着剤等の水
性型樹脂接着剤に、金属の粉末あるいは金属化合
物（但しアルカリ金属、アルミ金属、希土類金属
およびこれらの化合物を除く）を配合することを
特徴とする難接着木材用接着剤組成物。1 An adhesive for bonding difficult-to-bond wood containing a large amount of resin components such as Kapoor and Cruin,
Do not mix metal powder or metal compounds (excluding alkali metals, aluminum metals, rare earth metals, and their compounds) with water-based resin adhesives such as water-soluble resin adhesives and water-dispersed resin adhesives. Adhesive composition for hard-to-bond wood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4593982A JPS58162680A (en) | 1982-03-23 | 1982-03-23 | Adhesive composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4593982A JPS58162680A (en) | 1982-03-23 | 1982-03-23 | Adhesive composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58162680A JPS58162680A (en) | 1983-09-27 |
| JPH0122877B2 true JPH0122877B2 (en) | 1989-04-28 |
Family
ID=12733239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4593982A Granted JPS58162680A (en) | 1982-03-23 | 1982-03-23 | Adhesive composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58162680A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5236108B1 (en) | 2011-12-21 | 2013-07-17 | 株式会社富士ボルト製作所 | Forming method of crimp structure |
| JP6043942B2 (en) * | 2011-12-21 | 2016-12-14 | 株式会社富士ボルト製作所 | Forming method of crimp structure |
| CN109207095A (en) * | 2018-07-20 | 2019-01-15 | 蚌埠市奥特纸箱机械有限公司 | A kind of corrugated paper high viscosity adhesive |
-
1982
- 1982-03-23 JP JP4593982A patent/JPS58162680A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58162680A (en) | 1983-09-27 |
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