JPS62273364A - Manufacture of melamine-resin surface-reinforced concrete formwork flitch - Google Patents
Manufacture of melamine-resin surface-reinforced concrete formwork flitchInfo
- Publication number
- JPS62273364A JPS62273364A JP11257686A JP11257686A JPS62273364A JP S62273364 A JPS62273364 A JP S62273364A JP 11257686 A JP11257686 A JP 11257686A JP 11257686 A JP11257686 A JP 11257686A JP S62273364 A JPS62273364 A JP S62273364A
- Authority
- JP
- Japan
- Prior art keywords
- plywood
- melamine resin
- melamine
- resin
- concrete formwork
- 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
- 229920000877 Melamine resin Polymers 0.000 title claims description 34
- 239000004640 Melamine resin Substances 0.000 title claims description 29
- 238000004519 manufacturing process Methods 0.000 title claims description 21
- 239000011150 reinforced concrete Substances 0.000 title claims description 3
- 238000009415 formwork Methods 0.000 title description 16
- 239000011120 plywood Substances 0.000 claims description 40
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 229920001296 polysiloxane Polymers 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 230000002940 repellent Effects 0.000 claims description 3
- 239000005871 repellent Substances 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims 1
- 239000004567 concrete Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 11
- 239000000123 paper Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229920006268 silicone film Polymers 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 229920001187 thermosetting polymer Polymers 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 229920003180 amino resin Polymers 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000000843 powder Substances 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
- GZVHEAJQGPRDLQ-UHFFFAOYSA-N 6-phenyl-1,3,5-triazine-2,4-diamine Chemical compound NC1=NC(N)=NC(C=2C=CC=CC=2)=N1 GZVHEAJQGPRDLQ-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- NJYZCEFQAIUHSD-UHFFFAOYSA-N acetoguanamine Chemical compound CC1=NC(N)=NC(N)=N1 NJYZCEFQAIUHSD-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- YAMHXTCMCPHKLN-UHFFFAOYSA-N imidazolidin-2-one Chemical compound O=C1NCCN1 YAMHXTCMCPHKLN-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 150000003951 lactams Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000003961 penetration enhancing agent Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- LMYRWZFENFIFIT-UHFFFAOYSA-N toluene-4-sulfonamide Chemical compound CC1=CC=C(S(N)(=O)=O)C=C1 LMYRWZFENFIFIT-UHFFFAOYSA-N 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔産業上の利用分野〕
本発明はコンクリートの型枠に使用されるコンクリート
型枠合板の製造方法に関し、さらに詳しくは、メラミン
樹脂表面強化コンクリート型枠合板の製造方法に関する
ものである。Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method for manufacturing concrete form plywood used for concrete formwork, and more specifically, to a method for manufacturing concrete formwork plywood used for concrete formwork, and more specifically, to a method for manufacturing concrete formwork plywood used for concrete formwork. This invention relates to a method for manufacturing formwork plywood.
コンクリートの型枠として使用されるものとして合板、
鉄、アルミ等各種の材料が実用に供されているが中でも
合板はその軽量性、切断組み立て加工性、経済性に優れ
ることより賞月され大量に使用されている。Plywood as used as concrete formwork,
Although various materials such as iron and aluminum are in practical use, plywood is prized and used in large quantities because of its light weight, ease of cutting and assembly, and economic efficiency.
しかし、コンクリート型枠合板は、使用場面にコンクリ
ートの持つ、高アルカリ性のためにコンクリートに接す
る表面単板部より徐々に劣化し、くり返し転用回数が他
材料に比し少ない欠点がある。However, concrete formwork plywood has the drawback that, due to the high alkalinity of concrete when used, the surface veneer portion that comes into contact with concrete gradually deteriorates, and the number of times it can be reused is lower than with other materials.
そこで、上記欠点に対処するために、従来より表面保護
されたコンクリート型枠合板の製造法が各種提案されて
いる。Therefore, in order to deal with the above-mentioned drawbacks, various methods of manufacturing surface-protected concrete form plywood have been proposed.
たとえば、合板の表面に塗料を塗布する方法、主として
熱可塑性プラスチック、たとえばポリエチレン、ポリ塩
化ビニール等のシートを接着剤にて合板の表面に貼付す
る方法、ポリエチレン粉体を合板表面に均−散布熱融着
により合板上に保護層を形成させる方法、或いは、熱硬
化性樹脂７８液、たとえばフェノール樹脂、アミノ樹脂
、ジアリールフタレート樹脂等にて含浸シートを製造後
、合板上に積載し、熱圧着し、表面保護型枠合板を製造
する方法等が知られている。For example, methods include applying paint to the surface of plywood, attaching sheets of thermoplastic, such as polyethylene or polyvinyl chloride, to the surface of plywood with adhesive, and evenly distributing polyethylene powder onto the surface of plywood. A method is to form a protective layer on plywood by fusing, or after manufacturing an impregnated sheet with thermosetting resin 78 liquid, such as phenol resin, amino resin, diaryl phthalate resin, etc., it is placed on plywood and bonded by thermocompression. , a method of manufacturing surface-protected formwork plywood, and the like are known.
従来技術のうち、塗料のＯ布、プラスチックシートの貼
付け、粉体の熱融着は、基板合板製造後、後処理にて表
面保Ｗｉ層を形成させるものであり、工程が２段階にわ
たるため生産効率上問題がある。Among the conventional techniques, coating O-cloth, pasting plastic sheet, and heat-sealing powder form a surface-preserving Wi layer in post-processing after manufacturing the substrate plywood, and the process involves two stages, so production is slow. There are efficiency issues.
又、合板との接着性も必らずしも充分でなく、材質的に
も高アルカリに対して攻撃されやすく、くり返し耐用回
数は満足するものに至っていない′。In addition, the adhesion to plywood is not always sufficient, and the material is susceptible to attack by high alkalis, and the number of repeated uses is not yet satisfactory.
一方、熱硬化性樹脂溶液を用いての含浸シートの熱圧着
型枠合板は、基本的に合板製造時に同時積層して製造で
きるため、生産効率上すぐれた方法といえる。On the other hand, thermo-compression bonded form plywood of sheets impregnated with a thermosetting resin solution can basically be manufactured by simultaneously laminating plywood sheets at the time of manufacturing the plywood, so it can be said to be an excellent method in terms of production efficiency.
但し、前記熱硬化性樹脂溶液を用いての含浸シートの熱
圧着型枠合板においても、使用する樹脂の種類に応じて
種々の問題がある。即ち、フェノール樹脂は熱硬化速度
が一般的に遅く、合板製造条件（温度、時間）に含浸シ
ートの硬化条件を適合させにくり、又、材質的にセメン
トの高アルカリ性に対する耐性が劣り、コンクリート表
面の赤変等のトラブルを起しやすい。However, there are various problems depending on the type of resin used even in the thermocompression bonding form plywood of the impregnated sheet using the thermosetting resin solution. In other words, phenolic resin generally has a slow thermosetting rate, making it difficult to match the curing conditions of the impregnated sheet to the plywood manufacturing conditions (temperature, time), and the material has poor resistance to the high alkalinity of cement, making it difficult to adapt to the concrete surface. It is easy to cause problems such as red discoloration.
ジアリールフタレート樹脂は紙への浸透が不良のため、
紙間強度が不足で、該樹脂シートを用いた保護型枠合板
は使用時紙間はくりしゃすく、又樹脂は高価である。Diaryl phthalate resin has poor penetration into paper,
The paper spacing is insufficient, and the protective form plywood using the resin sheet tends to crack during use, and the resin is expensive.
それに対しアミノ樹脂とくにメラミン樹脂にて製造され
た含浸シートによる保護型枠合板は樹脂の硬化速度が早
いため、合板製造条件に適合させることが簡単で、又材
質的にセメントのアルカリ分に強く、くり返し耐用回数
が多く、最も信頼性の高い方法である。On the other hand, protective formwork plywood made with an impregnated sheet made of amino resin, especially melamine resin, has a fast curing speed, so it is easy to adapt it to the plywood manufacturing conditions, and the material is resistant to the alkali content of cement. It is the most reliable method as it can be used many times.
そのため、特公昭５８−８３４６、特公昭５９〜１９８
１６、特公昭６０−３８２７５等でメラミン樹脂にて保
護された合板の製造法が提案されている。For this reason, the special public interest rate was 58-8346, the special public interest rate was
16, Japanese Patent Publication No. 60-38275, etc., proposes a method for manufacturing plywood protected with melamine resin.
ただメラミン樹脂保護型枠合板といえどもくり返し耐用
回数が上がるにともない、表面にセメント分の付着（い
わゆるノロ付着）がみられ、コンクリート面の易はくり
性が低下し、耐用回数に限界が生じる。However, even with melamine resin protected formwork plywood, as the number of repetitions increases, cement adhesion (so-called slag adhesion) is seen on the surface, which reduces the ease of peeling off the concrete surface and limits the number of times it can be used. .
そこで、本発明は、メラミン樹脂保護型枠合板においで
、ノロ付着の問題がなく、くり返し耐用回数が大幅に向
上した型枠合板を提供することを目的とするものである
。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a melamine resin-protected formwork plywood which is free from the problem of slag adhesion and has a significantly improved durability.
本発明者等は、含浸用の樹脂としてメラミン樹脂を主体
にしたものにおいて、上記目的に沿う配合樹脂について
種々研究を重ねた結果、水性メラミン樹脂に固型分比で
０．１％乃至３％の水性シリコーン系ｔａ水剤を添加し
てなるメラミン樹脂を含浸用樹脂として使用すると、含
浸シートの熱圧成形時に前記シート表面にシリコーン皮
膜が形成され、これによりノロ付着が防止され、くり返
し耐用回数の大幅な向上が達成されることを見出し本発
明を完成するに至った。The present inventors have conducted various studies on blended resins that meet the above objectives with melamine resin as the main impregnation resin. When a melamine resin prepared by adding an aqueous silicone-based TA solution is used as an impregnating resin, a silicone film is formed on the surface of the impregnated sheet during hot-press molding, which prevents slag adhesion and increases the number of repetitions. The present invention has been completed based on the discovery that a significant improvement can be achieved.
即ち、本発明のメラミン樹脂表面強化コンクリート型枠
合板の製造方法は、水性メラミン樹脂に固型分比で０．
１％乃至３％の水性シリコーン系撥水剤を添加してなる
メラミン樹脂を紙、布などのＷ材に含浸、乾燥させた後
、該メラミン含浸樹脂シートを合板上に積載し、熱圧成
形することを特徴とするものである。That is, the method for producing melamine resin surface-reinforced concrete form plywood according to the present invention is to use a solids ratio of 0.00% to the water-based melamine resin.
After impregnating a W material such as paper or cloth with melamine resin made by adding 1% to 3% of an aqueous silicone water repellent and drying, the melamine-impregnated resin sheet is placed on plywood and hot-press molded. It is characterized by:
水性メラミン樹脂としては、ホルムアルデヒド／メラミ
ン（＝Ｆ／Ｍ）のモル比１．５〜３、ｐＨ６〜９、温度
５０〜９８℃の一般的な製造条件にて作られた水性メラ
ミン樹脂が使用されるが、各種目的たとえば可撓性付与
のため、ベンゾグアナミン、アセトグアナミン等のグア
ナミン類、又パラトルエン−スルホンアミド、エチレン
尿素等での共縮合、尿素との共縮エチレングリコール等
のアルコール類の添加、又貯蔵安定性向上のための、ラ
クタム類の添加もさまたげない。又メタノール、エタノ
ール等の低級アルコールによる部分アルコキシ化も可能
である。As the aqueous melamine resin, an aqueous melamine resin made under typical manufacturing conditions of a formaldehyde/melamine (=F/M) molar ratio of 1.5 to 3, a pH of 6 to 9, and a temperature of 50 to 98°C is used. However, for various purposes such as imparting flexibility, addition of guanamines such as benzoguanamine and acetoguanamine, co-condensation with para-toluene-sulfonamide and ethylene urea, and alcohols such as ethylene glycol co-condensing with urea. Also, lactams may be added to improve storage stability. Partial alkoxylation with lower alcohols such as methanol and ethanol is also possible.
本目的に使用されるメラミン樹脂の必要特性として、速
硬化性、耐クラツク性が重要であるのでＦ／Ｍは低モル
比１．５〜２程度、低縮合度で反応を停止させ、又可撓
化剤の添加が必要である。As the required properties of the melamine resin used for this purpose are fast curing property and crack resistance, F/M should be set at a low molar ratio of about 1.5 to 2, and the reaction should be stopped at a low degree of condensation. Addition of a flexibilizing agent is necessary.
また水性シリコーンＩ８水剤としては、アルカリ安定型
モノメチルシリコネート、ジメチルンリコネート等の完
全水溶型、又シリコーン樹脂のエマルジョン型等が考え
られるが、本目的のためには、水性メラミン樹脂への均
−溶解又熱圧着後メラミン樹脂保護強化層の表面へのシ
リコーン皮膜形成に優れるため、完全水溶型の使用が望
ましい。In addition, as water-based silicone I8 water preparations, completely water-soluble types such as alkali-stable monomethyl siliconate and dimethyl silicone, and emulsion types of silicone resins can be considered, but for this purpose, water-based melamine resin It is desirable to use a completely water-soluble type because it is excellent in forming a silicone film on the surface of the melamine resin protective reinforcing layer after homogeneous dissolution or thermocompression bonding.
水性メラミン樹脂に対する水性シリコーンｔΩ水剤の添
加量は固型分比でＯ，１％乃至３％であり、０、１％以
下ではメラミン樹脂表面層へのシリコーン皮膜形成力が
弱く、したがって、くり返し耐用回数の大幅な向上が望
めず、又３％以上ではくり返し耐用回数は一定に達し３
％以上添加の必要がなく、又３％以上添加するとメラミ
ン樹脂の硬化に影響し、硬化速度が低下するので望まし
くない。The amount of the water-based silicone tΩ solution added to the water-based melamine resin is O.1% to 3% in terms of solid content, and if it is less than 0.1%, the ability to form a silicone film on the melamine resin surface layer is weak, and therefore, it is necessary to repeat the A significant improvement in the number of cycles of service life cannot be expected, and if the number of repetitions exceeds 3%, the number of cycles of service life will reach a certain level.
It is not necessary to add more than 3%, and adding more than 3% is not desirable because it affects the curing of the melamine resin and reduces the curing speed.
水性シリコーン撥水剤を配合してなる水性メラミン樹脂
に対しては、通常の有機、無機の酸硬化剤、界面活性剤
よりなる浸透促進剤、染、顔料の着色剤、高級脂肪酸を
主体にした内部離形剤を任意に添加して使用できる。For water-based melamine resins that are formulated with water-based silicone water repellents, conventional organic and inorganic acid curing agents, penetration enhancers made of surfactants, coloring agents for dyes and pigments, and higher fatty acids are used as main ingredients. An internal mold release agent can be optionally added and used.
含浸シートの製造に関しては、連続式含浸乾燥装置が用
いられ、紙、布、不織布などのベース基材に必要量メラ
ミン樹脂を含浸させ、適正揮発分を持つまで乾燥して製
造される。Concerning the production of impregnated sheets, a continuous impregnation drying apparatus is used to impregnate a base material such as paper, cloth, or nonwoven fabric with the required amount of melamine resin, and then dry it until it has an appropriate volatile content.
本発明によれば、含浸用樹脂として使用された、水性メ
ラミン樹脂に固型分比で０．１％乃至３％の水性シリコ
ーン系ＩＢ水剤を添加してなるメラミン樹脂の作用によ
り、含浸シートの熱圧成形時に前記シート表面にシリコ
ーン皮膜が形成され、これによりノロ付着が防止され、
くり返し耐用回数の大幅な向上が達成されるものである
。According to the present invention, by the action of the melamine resin, which is obtained by adding 0.1% to 3% of aqueous silicone-based IB liquid agent to the aqueous melamine resin used as the impregnating resin, the impregnated sheet A silicone film is formed on the sheet surface during hot press molding, which prevents slag adhesion.
This results in a significant improvement in the number of repeated use cycles.
なお、本発明においては、メラミン樹脂が熱圧プレスに
よる硬化の際に、縮合水の蒸発に伴い発泡し、これが合
板表面の導管溝等の凹所に充填された状態となり、その
部分のアンカー効果により含浸シートの合板に対する接
着力がさらに向上するとともに、合板表面が平滑な製品
が得られるものである。In addition, in the present invention, when the melamine resin is cured by hot press, it foams as condensed water evaporates, and this fills the concavities such as conduit grooves on the plywood surface, creating an anchor effect in that part. This further improves the adhesion of the impregnated sheet to plywood and provides a product with a smooth plywood surface.
上記のように、本発明は、従来のメラミン樹脂保護強化
されたコンクリート型枠合板に比し、くり返し耐用回数
の大幅に向上されたものを製造し得るという優れた効果
を奏するとともに、含浸シートの合板に対する接着性が
特に良好で、かつ表面が平滑な製品が得られるという効
果もある。As described above, the present invention has the excellent effect of being able to manufacture concrete formwork plywood with a significantly improved repeated durability compared to conventional concrete formwork plywood reinforced with melamine resin protection. Another effect is that a product with particularly good adhesion to plywood and a smooth surface can be obtained.
（実施例１．２，３．４及び比較例１，２．３）水性メ
ラミン樹脂（サントツブＭ７００．日産化学工業（株）
′Ｍ、固形分５８％）に第１表に示す割合にて水性シリ
コーンｔΩ水剤（ＰｏｌｏｎＣ，信越化学工業（株）製
、固型分２０％）を配合し、２０％パラトルエンスルホ
ン酸水溶液にて配合液のｐＨを７．５〜８．５に調整し
、さらに浸透促進剤を適当量添加した。(Examples 1.2, 3.4 and Comparative Examples 1, 2.3) Water-based melamine resin (Santotsubu M700. Nissan Chemical Industries, Ltd.)
'M, solid content 58%) was blended with an aqueous silicone tΩ liquid agent (PolonC, manufactured by Shin-Etsu Chemical Co., Ltd., solid content 20%) in the proportions shown in Table 1, and a 20% para-toluenesulfonic acid aqueous solution was added. The pH of the blended solution was adjusted to 7.5 to 8.5, and an appropriate amount of a penetration enhancer was added.
３０ｇ／ ｔｏ’重量の紙を使用し、各配合液にて含浸
、乾燥させ、含浸シートを作成した。Using paper weighing 30 g/to', it was impregnated with each blended solution and dried to create an impregnated sheet.
含浸シートの作成条件としては、原紙に対する樹脂固型
分の付着量（Ｒｅｓｉｎ Ｃｏｎｔｅｎｔ）として全て
３００〜３２０％に入るよう調整した。乾燥は熱風循環
炉を使用、炉内温度１２０℃にて１２０〜１４０秒間乾
燥させ、揮発分（Ｖｏｌａｔｉｌｅ Ｃｏｎｔｅｎｔ）
６〜８％の含浸シートを作成した。The conditions for creating the impregnated sheets were adjusted so that the amount of resin solid content attached to the base paper was 300 to 320% in all cases. For drying, use a hot air circulation oven and dry for 120 to 140 seconds at an oven temperature of 120°C to remove volatile content.
A 6-8% impregnated sheet was prepared.
該含浸シートを尿素樹脂接着剤にて単板５層仮圧締した
合板（３００ｍ／ｍ Ｘ ３００ｍ／ｍ）の上に積層し
、熱圧プレス機にて１ ｍ／ｍの金属板を介して熟語温
度１２５℃、圧力１０ｋｇ／ｃｎｌ、時間７分の成形条
件にてメラミン樹脂保護強化型枠合板を作製した。The impregnated sheet was laminated on 5 layers of plywood (300 m/m x 300 m/m), which had been pre-pressed with urea resin adhesive, and then pressed through a 1 m/m metal plate using a hot press machine. A melamine resin-protected reinforced form plywood was produced under the following molding conditions: temperature of 125° C., pressure of 10 kg/cnl, and time of 7 minutes.
本強化型枠合板のメラミン樹脂強化面を底面にして周囲
に囲いを設けた。An enclosure was set up around the melamine resin reinforced side of this reinforced formwork plywood as the bottom.
この中にセメント／砂／水＝１／２１０．６を混練して
なるセメントモルタルを打ち込み、室温にて１週間静置
養生した。Cement mortar made by kneading cement/sand/water = 1/210.6 was poured into this, and the mixture was allowed to stand and cure at room temperature for one week.
その後モルタルブロックをメラミン樹脂強化面よりひき
はがし、その時のばくり性の程度、ばくり後のメラミン
樹脂面のノーロ付着の程度を観察し、くり返し耐用回数
を判定した。Thereafter, the mortar block was peeled off from the melamine resin-reinforced surface, and the degree of peeling property and the degree of staining on the melamine resin surface after peeling were observed to determine the number of repetitions.
他にＪＡＳ寒熱くり返しＡ試験結果、ＪＡＳ耐水耐水膜
試験ＡＳ ｌ類浸せきばくり試験をあわせて実施した。In addition, the results of the JAS cold and hot repetition A test and the JAS water resistant membrane test AS I immersion test were also conducted.
結果を第１表に示す。The results are shown in Table 1.
（本頁以下余白）(Margins below this page)
Claims (1)
シリコーン系撥水剤を添加してなるメラミン樹脂を紙、
布などの基材に含浸、乾燥させた後、該メラミン含浸樹
脂シートを合板上に積載し、熱圧成形することを特徴と
するメラミン樹脂表面強化コンクリート型枠合板の製造
方法。Melamine resin made by adding 0.1% to 3% of aqueous silicone water repellent in terms of solid content to aqueous melamine resin is used for paper,
A method for producing melamine resin surface-reinforced concrete form plywood, which comprises impregnating a base material such as cloth with the melamine resin sheet and drying it, then stacking the melamine-impregnated resin sheet on plywood and hot-pressing it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11257686A JPS62273364A (en) | 1986-05-19 | 1986-05-19 | Manufacture of melamine-resin surface-reinforced concrete formwork flitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11257686A JPS62273364A (en) | 1986-05-19 | 1986-05-19 | Manufacture of melamine-resin surface-reinforced concrete formwork flitch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62273364A true JPS62273364A (en) | 1987-11-27 |
Family
ID=14590176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11257686A Pending JPS62273364A (en) | 1986-05-19 | 1986-05-19 | Manufacture of melamine-resin surface-reinforced concrete formwork flitch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62273364A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02144471A (en) * | 1988-11-26 | 1990-06-04 | Kobunshi Giken Kk | Concrete form board and manufacturing thereof |
| JPH0416242U (en) * | 1990-05-30 | 1992-02-10 | ||
| CN101858140A (en) * | 2010-06-10 | 2010-10-13 | 张建华 | Production process of free-disassembly color protective layer template |
-
1986
- 1986-05-19 JP JP11257686A patent/JPS62273364A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02144471A (en) * | 1988-11-26 | 1990-06-04 | Kobunshi Giken Kk | Concrete form board and manufacturing thereof |
| JPH0416242U (en) * | 1990-05-30 | 1992-02-10 | ||
| CN101858140A (en) * | 2010-06-10 | 2010-10-13 | 张建华 | Production process of free-disassembly color protective layer template |
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