JPS61176680A - Urea resin adhesive composition - Google Patents
Urea resin adhesive compositionInfo
- Publication number
- JPS61176680A JPS61176680A JP1744685A JP1744685A JPS61176680A JP S61176680 A JPS61176680 A JP S61176680A JP 1744685 A JP1744685 A JP 1744685A JP 1744685 A JP1744685 A JP 1744685A JP S61176680 A JPS61176680 A JP S61176680A
- Authority
- JP
- Japan
- Prior art keywords
- urea resin
- adhesive
- resin adhesive
- adhesive composition
- ashes
- 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
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 36
- 239000000853 adhesive Substances 0.000 title claims abstract description 35
- 229920001807 Urea-formaldehyde Polymers 0.000 title claims abstract description 23
- 239000000203 mixture Substances 0.000 title claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 239000002023 wood Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 abstract 3
- 239000002956 ash Substances 0.000 abstract 3
- 238000013329 compounding Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000011120 plywood Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 4
- 229920000877 Melamine resin Polymers 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 241000209140 Triticum Species 0.000 description 3
- 235000021307 Triticum Nutrition 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 235000019270 ammonium chloride Nutrition 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 239000010902 straw Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000006482 condensation reaction Methods 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical group OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000003672 ureas Chemical class 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 241000609240 Ambelania acida Species 0.000 description 1
- 241000218631 Coniferophyta Species 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- -1 and for this reason Substances 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用公費〕
本発明は耐水性の改善された尿素樹脂系接着剤組成物に
関するものであり、吏畳ζ詳しくは、比較的低温短時間
の熱圧締で接着操作が行なえるという特徴を損うことな
く、耐水性の改善された尿素樹脂系接着剤組成物に関す
るものである。Detailed Description of the Invention [Public Expenses for Industrial Use] The present invention relates to a urea resin adhesive composition with improved water resistance. The present invention relates to a urea resin adhesive composition that has improved water resistance without impairing its characteristic of being able to be bonded with water.
尿素樹脂系接着剤は、比較的安定であり。 Urea resin adhesives are relatively stable.
取扱いが簡単で且つ大１１に入手可能なことから我国の
木材工業に於ては接着剤の主流と竜っている。しかしな
がら尿素樹脂系接着剤は、フェノール樹脂接着剤に比べ
て耐水性の点で著しく劣ることが欠点とされており、こ
のため、尿素樹脂系接着剤を用−て製造された合板等の
製品は長時間の屋外や湿度の高−場所での使用暑こ耐先
ないものであった。Because it is easy to handle and readily available, it has become the mainstream adhesive in Japan's wood industry. However, the disadvantage of urea resin adhesives is that they are significantly inferior in water resistance compared to phenolic resin adhesives, and for this reason, products such as plywood manufactured using urea resin adhesives are It could not withstand the heat of being used outdoors for long periods of time or in places with high humidity.
従来、尿素樹脂系接着剤の耐水性の改善法として、メラ
ミンまたはフェノール等全尿素樹脂製造時に添加する方
法、あるーは上記化合物を接着剤糊液の配合時に添加す
る方法等があり、これによって、接着剤の骨格を耐水性
の優れたものに変えていた。しかしながらこれらの方法
ではメラミン又はフェノールを多量に添加しなければな
らず、そのため製造コストも割高となるものであった。Conventionally, methods for improving the water resistance of urea resin adhesives include adding melamine or phenol during the production of all-urea resins, or adding the above-mentioned compounds when formulating the adhesive size liquid. , the adhesive skeleton was changed to one with excellent water resistance. However, these methods require the addition of a large amount of melamine or phenol, resulting in relatively high production costs.
更にこれらの接着剤は尿素樹脂接着剤よりも熱圧締時に
高温、長時間を必要とするなど問題の多いものであった
０
〔発明が解決しようとする問題点〕
本発明は、上記のような問題点全解決し、製造コストが
低く、尿素樹脂接着剤の特徴である比較的低温短時間の
熱圧締で接着操作の行なえる耐水性の改善された尿素樹
脂系接着剤を提供することを目的とするものであるＯ〔
問題点を解決するための手段〕
本発明者等は、この目的全達成するため、先ず尿素樹脂
系接着剤の耐水性全低下せしめる原因Ｉζついて検討し
た。その結果、尿素樹脂に添加される酸性の硬化剤、例
えば通常使用でれている塩化アンモニウムとホルムアル
デヒＶとが反応して塩１−を生成するが、この塩酸は接
着剤の水素イオン濃度全高めることによって縮合反応全
促進するのであるが、それと同時に縮合反応の逆反応で
ある樹脂の加水分解に対しても触媒として作用するもの
であり、樹脂の硬化後もこの醸は尿素樹脂系接層剤層Ｉ
ζ残存しており、そのため樹脂の耐水性が著しく低下す
ることが判明した。Furthermore, these adhesives have many problems such as requiring a higher temperature and longer time during hot pressing than urea resin adhesives0 [Problems to be solved by the invention] To provide a urea resin adhesive with improved water resistance, which solves all of the above problems, has low manufacturing costs, and can be bonded by hot pressing at a relatively low temperature and in a short time, which is a characteristic of urea resin adhesives. O [
Means for Solving the Problems] In order to achieve this objective, the present inventors first investigated the cause Iζ that causes a total decrease in water resistance of urea resin adhesives. As a result, the acidic curing agent added to the urea resin, such as the commonly used ammonium chloride, reacts with formaldehyde V to form a salt 1-, which increases the total hydrogen ion concentration of the adhesive. This accelerates the entire condensation reaction, but at the same time it also acts as a catalyst for the hydrolysis of the resin, which is the reverse reaction of the condensation reaction, and even after the resin has hardened, this fermentation agent is used as a urea resin adhesive. Layer I
It was found that ζ remained, which caused the water resistance of the resin to decrease significantly.
そこで本発明者等は硬化後の樹脂中の酸の除去方法につ
いて鋭倉研究した結果、本発明の、樹脂の硬化全損わな
い程度に除屑に酸と反応する物質、即ち、草木の燃焼灰
の配合された尿素樹脂系接着剤組成物を見い出したので
ある。Therefore, the present inventors conducted research on a method for removing acid from the resin after curing, and found that the present invention uses a substance that reacts with the acid in the removed debris to the extent that the resin is not completely cured, that is, the combustion of plants. They discovered a urea resin adhesive composition containing ash.
本発明に用いられる草木の燃焼灰は、水に難溶性で、且
つ水に溶けた場合に微アルカリ性であり、尿素樹脂接着
剤の硬化反応速に番大きく抑制せずに耐水性を向上せし
めるものである。草木の燃焼灰としては、普通見られる
針葉樹、或いは広葉樹等をそのまま燃焼した灰を用−て
もよ−が、木材工ｔｌに於ける廃棄物である廃材、鋸屑
、木粉とか、バガス、稲ワラ、麦ワラ、籾殻、その他あ
まり利用されて−ない間伐材等よりなる燃焼灰を用いる
す
とコストの点で非常に有利であみ、更に公害対策の点ホ
らも望ましいものである。燃焼灰の粒子の大きさは樹脂
を混合した時の分散性や洟１性及び糊液の塗布量からみ
て平均粒径２００ｔｃ、、以下が好ましく、燃焼灰の添
加割合は接着剤１００重量部に対し２〜５０Ｍ量Ｓが好
ましい。The combustion ash of plants used in the present invention is poorly soluble in water and slightly alkaline when dissolved in water, and improves the water resistance of the urea resin adhesive without significantly inhibiting the curing reaction speed. It is. As the combustion ash for plants, ash obtained by directly burning conifers or broad-leaved trees, etc., which are commonly found, may be used, but it is also possible to use ash from the combustion of coniferous or broad-leaved trees, etc., but it is also possible to use waste materials such as wood scraps, sawdust, wood powder, bagasse, and rice. The use of combustion ash made of straw, wheat straw, rice husks, and other thinned materials that are not often used is very advantageous in terms of cost, and is also desirable from the viewpoint of pollution control. The particle size of the combustion ash is preferably 200 tc or less in average particle size, considering the dispersibility when mixing the resin, the adhesive properties, and the amount of adhesive applied, and the addition ratio of the combustion ash is 100 parts by weight of the adhesive. On the other hand, an amount S of 2 to 50 M is preferable.
また、本発明に用いられる尿素樹脂系接着剤は、通常の
尿素樹脂接着剤に限らず、メラミン、フェノール或いは
レゾルシン等で変性したーわゆる変性尿素樹脂接着剤及
びこれらの混合した接着剤も含むものである。Furthermore, the urea resin adhesive used in the present invention is not limited to ordinary urea resin adhesives, but also includes so-called modified urea resin adhesives modified with melamine, phenol, resorcinol, etc., and adhesives containing mixtures thereof. It is something that
次に実施例により本発明を具体的に説明する。なお部は
１に虚部を示す。Next, the present invention will be specifically explained with reference to Examples. Note that 1 indicates the imaginary part.
実施例１、比較例に
類合板用接着剤（大友化属（株）製、ｔｒＡ−１２５Ｇ
）１００部、ラワン材粉末の燃焼灰（ボールミルで粉砕
し、２００メツシュ篩全通過したもの）２０部、小麦粉
（日清製粉（株）製赤花）２０部、水１０部及び塩化ア
ンモニウム粉末１部を混合しよく撹拌して糊量
液全調ｊ彊した。Similar plywood adhesive (manufactured by Otomo Kazoku Co., Ltd., trA-125G) was used in Example 1 and Comparative Example.
) 100 parts, combustion ash of lauan wood powder (pulverized in a ball mill and passed through a 200-mesh sieve) 20 parts, wheat flour (Akahana manufactured by Nisshin Seifun Co., Ltd.) 20 parts, water 10 parts, and ammonium chloride powder 1 part The mixture was mixed and stirred well to make the entire glue amount.
この糊液をｌ、 ６ｍ ｍ厚うワン単板の両面に２２０
ｇ／♂塗布し、これに１．６１ａＩ１１厚ラワン祇板
を上下から重ね合せて、圧力１０ｋｇ１０Ｌ１１１で２
０分間冷圧締を行ない、ついで、これを１２０°０に保
ったホットプレスに挿入して圧力１０ ｋｇ１０♂で１
分４０８１間熱圧口して３１ライのラワン合板を得た。Apply 220 l of this glue on both sides of a 6mm thick veneer.
g/♂ coated, overlaid 1.61aI11 thick lauan gibata from above and below, and applied 2 coats at a pressure of 10kg10L111.
Cold compaction was performed for 0 minutes, then inserted into a hot press kept at 120°0 and pressed at a pressure of 10 kg 10♂.
A lauan plywood of 31 rai was obtained by hot pressing for 4081 minutes.
一方、比較例として、尿素樹Ｍｉａｉ！着剤１００部に
対し、小麦粉３０部、水２０部及び塩化アンモニウム粉
末１部を配合して糊液をａｘ’した。以下、上記実施例
と同様にして３プライのラワン合板を得た。On the other hand, as a comparative example, urea tree Miai! To 100 parts of adhesive, 30 parts of wheat flour, 20 parts of water, and 1 part of ammonium chloride powder were mixed to form a sizing solution. Thereafter, 3-ply lauan plywood was obtained in the same manner as in the above example.
上記２Ｍ類の合板の接着強さをＪＡＳ規格に準じて泗定
°した結果は、第１表に示す如くである。The adhesive strength of the 2M class plywood was determined in accordance with JAS standards, and the results are shown in Table 1.
第１表
実施例２、比較例２
接着剤をメラミン変性尿素樹脂（アイカニ業（株）、Ｕ
Ｍ−８２）−ζ、また燃焼灰Ｔｒ稲ワラによるもの檻代
えた以外は、実施例１、比較例１と同様にして３プテイ
のラワン合板を傅た。Table 1 Example 2, Comparative Example 2 Melamine-modified urea resin (Aikanigyo Co., Ltd., U
M-82)-ζ, and 3-ply lauan plywood was prepared in the same manner as in Example 1 and Comparative Example 1, except that the cage was replaced with one using combustion ash Tr rice straw.
これらの合板の接着強さをｆｆＡ３規格に準じて測定し
た結果は、第２表に示す如くである。The adhesive strength of these plywood boards was measured according to the ffA3 standard, and the results are shown in Table 2.
本発明は、樹脂の硬化を損わな一程度１こ徐々に酸と反
応する物質、即ち草木の燃焼灰を尿素樹脂系接着剤に添
加すると−う簡単な操作によって、比較的低温短時間の
熱圧締で接着操作全行うことができるという該接着剤の
特徴を損うことなく、耐水性を大幅に向上させることが
でき、接着剤として極めて優れたものであわ、これによ
る製品寿命及び用ニア！血で非常に有益なものである。The present invention enables the addition of a substance that gradually reacts with acid, that is, the combustion ash of plants, to a urea resin adhesive without impairing the curing of the resin. The water resistance can be greatly improved without sacrificing the characteristic of this adhesive that all adhesive operations can be performed by pressing, making it an extremely excellent adhesive. ! Blood is very beneficial.
又、高価なメラミン又はフェノールを使用する必要は゛
なく、工業、農林業等に於ける産業廃棄物全使用するこ
とができるので製造コストが低く、更に公害対策の上か
らも家ましいものである。In addition, there is no need to use expensive melamine or phenol, and all industrial waste from industry, agriculture, forestry, etc. can be used, so the manufacturing cost is low and it is also environmentally friendly.
Claims (1)
脂系接着剤組成物A urea resin adhesive composition characterized by containing combustion ash of plants.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1744685A JPS61176680A (en) | 1985-01-30 | 1985-01-30 | Urea resin adhesive composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1744685A JPS61176680A (en) | 1985-01-30 | 1985-01-30 | Urea resin adhesive composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61176680A true JPS61176680A (en) | 1986-08-08 |
Family
ID=11944248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1744685A Pending JPS61176680A (en) | 1985-01-30 | 1985-01-30 | Urea resin adhesive composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61176680A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7072948B1 (en) * | 2021-08-19 | 2022-05-23 | 丸玉木材株式会社 | Manufacturing method of adhesive for plywood, manufacturing method of filler in the adhesive, and manufacturing equipment |
-
1985
- 1985-01-30 JP JP1744685A patent/JPS61176680A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7072948B1 (en) * | 2021-08-19 | 2022-05-23 | 丸玉木材株式会社 | Manufacturing method of adhesive for plywood, manufacturing method of filler in the adhesive, and manufacturing equipment |
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