JPH0976250A - Mold releasing method for mold - Google Patents
Mold releasing method for moldInfo
- Publication number
- JPH0976250A JPH0976250A JP26250795A JP26250795A JPH0976250A JP H0976250 A JPH0976250 A JP H0976250A JP 26250795 A JP26250795 A JP 26250795A JP 26250795 A JP26250795 A JP 26250795A JP H0976250 A JPH0976250 A JP H0976250A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molding
- film
- silicone oil
- type silicone
- 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
- 230000003578 releasing effect Effects 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000000465 moulding Methods 0.000 claims abstract description 19
- 229920002545 silicone oil Polymers 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000003960 organic solvent Substances 0.000 claims abstract description 5
- 150000003606 tin compounds Chemical class 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000003054 catalyst Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 230000007062 hydrolysis Effects 0.000 claims description 5
- 238000006460 hydrolysis reaction Methods 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 239000006082 mold release agent Substances 0.000 abstract description 4
- -1 organo tin compound Chemical class 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 230000008021 deposition Effects 0.000 abstract 1
- 230000007257 malfunction Effects 0.000 abstract 1
- 229910020175 SiOH Inorganic materials 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000002285 corn oil Substances 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- POPACFLNWGUDSR-UHFFFAOYSA-N methoxy(trimethyl)silane Chemical compound CO[Si](C)(C)C POPACFLNWGUDSR-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 150000003058 platinum compounds Chemical class 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、成形用金型の離型
処理方法に関する。更に詳しくは、シリコーンオイル系
離型剤を焼付け処理する成形用金型の離型処理方法に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold release treatment method for a molding die. More specifically, the present invention relates to a mold release treatment method for a molding die in which a silicone oil-based release agent is baked.
【０００２】[0002]
【従来の技術】ゴム、プラスチック等を金型で成形する
場合、離型性の悪い成形材料については、金型表面に離
型剤を塗布することが一般に行われている。離型剤に
は、非硬化型のものと硬化型のものがあり、非硬化型の
ものを使用する場合には、金型の形状によっては成形物
に押し流される離型剤が金型内の特定の部分に滞留し、
それが製品に影響をおよぼす場合がある。2. Description of the Related Art When molding rubber, plastic, or the like with a mold, it is a common practice to apply a mold release agent to the mold surface for molding materials having poor releasability. There are two types of release agents: non-curing type and curing type.In the case of using non-curing type, depending on the shape of the mold, the release agent that is flushed to the molded product is inside the mold. Stay in certain parts,
It can affect the product.
【０００３】このような事態を避けるためには、一般に
硬化型の離型剤が用いられるが、離型作用を営む硬化膜
が成形時の成形生地に少しずつ削られていくため、離型
剤としての硬化は成形回数で約 10〜20回位しか持た
ず、その都度成形ラインを停止し、離型剤を塗布して使
用しているのが現状である。In order to avoid such a situation, a curing type releasing agent is generally used. However, since the cured film that performs the releasing action is gradually scraped off by the molding material at the time of molding, the releasing agent is released. Curing has only about 10 to 20 times of molding, and the molding line is stopped each time, and the mold releasing agent is applied and used.
【０００４】即ち、成形用金型に用いられる焼付型離型
剤としては、金型表面で硬化反応を起こさせるために、
反応性官能基を有するものが離型膜の形成成分として用
いられている。そのため、硬化後にもなお残存する官能
基の影響で、離型膜の表面エネルギーが大きくなり、そ
の結果成形物と離型膜との間の摩擦力が高くなって離型
膜が摩耗してしまい、離型膜の寿命は約 10〜20回程度
の成形回数にとどまっている。That is, as a baking mold release agent used in a molding die, in order to cause a curing reaction on the surface of the die,
Those having a reactive functional group are used as components for forming a release film. Therefore, the surface energy of the release film increases due to the effect of the functional groups still remaining after curing, and as a result, the frictional force between the molded product and the release film increases and the release film wears. The life of the release film is about 10 to 20 times.
【０００５】また、離型膜の寿命が短いため離型剤の塗
布を頻繁に行う必要があり、これに伴って不必要な離型
剤硬化物が型表面に堆積し、これが成形物に悪影響を及
ぼすこともある。Further, since the life of the release film is short, it is necessary to frequently apply the release agent, and accordingly, an unnecessary cured product of the release agent is deposited on the mold surface, which adversely affects the molded product. May be affected.
【０００６】[0006]
【発明が解決しようとする課題】本発明の目的は、成形
用金型の表面で硬化反応を起こして離型膜を形成させる
成形用金型の離型処理方法において、離型膜と成形物と
の間の滑り性および離型性を向上させて離型膜の寿命を
改善せしめ、また離型剤の堆積によってひき起こされる
製品の不具合を解消せしめた離型処理方法を提供するこ
とにある。DISCLOSURE OF THE INVENTION An object of the present invention is to provide a mold releasing film and a molded article in a mold releasing treatment method of a mold for causing a curing reaction on the surface of the mold to form a mold releasing film. It is intended to provide a mold release treatment method that improves the slipperiness and mold releasability between the mold and the mold to improve the life of the mold release film and eliminates the product defects caused by the accumulation of the mold release agent. .
【０００７】[0007]
【課題を解決するための手段】かかる本発明の目的は、
側鎖 SiH型シリコーンオイル、トリアルコキシフェニル
シランおよびSiH基加水分解触媒を溶解させた有機溶媒
溶液を金型表面に塗布し、加熱硬化膜をを形成させた
後、末端 SiOR型シリコーンオイルまたはモノアルコキ
シシラン化合物および有機錫化合物の混練物を塗布して
加熱する成形用金型の離型処理方法によって達成され
る。SUMMARY OF THE INVENTION The object of the present invention is as follows.
Side chain SiH type silicone oil, trialkoxyphenylsilane and SiH group hydrolysis catalyst are applied to the surface of the mold in an organic solvent solution to form a heat-cured film, and then a terminal SiOR type silicone oil or monoalkoxy is formed. This is achieved by a mold release treatment method of a molding die in which a kneaded product of a silane compound and an organic tin compound is applied and heated.
【０００８】[0008]
【発明の実施の形態】成形用金型の表面には、まず側鎖
SiH型シリコーンオイル、トリエトキシフェニルシラン
によって代表されるトリアルコキシシランおよびSiH基
加水分解触媒を溶解させた有機溶媒溶液が塗布される。
側鎖SiH型シリコーンオイルの側鎖SiH基は、有機錫化合
物等のSiH基加水分解触媒の存在下では空気中の僅かな
水分によっても加水分解を起し、SiOH基に変換される。 -SiH+H2O→-SiOH+H2↑ そして、このSiOH基がトリエトキシフェニルシランと次
のように反応する。 -SiOH+PhSi(OEt)3→-SiOSi(OEt)2Ph+EtOH この結果、SiOH基がすべてトリエトキシフェニルシラン
と反応しない限り、その加熱硬化膜上には、-SiOH基が
存在することとなる。BEST MODE FOR CARRYING OUT THE INVENTION First, side chains are formed on the surface of a molding die.
An organic solvent solution in which a SiH type silicone oil, a trialkoxysilane represented by triethoxyphenylsilane and a SiH group hydrolysis catalyst are dissolved is applied.
The side chain SiH group of the side chain SiH type silicone oil is hydrolyzed by a slight amount of water in the air in the presence of a SiH group hydrolysis catalyst such as an organic tin compound, and is converted into a SiOH group. -SiH + H 2 O → -SiOH + H 2 ↑ And this SiOH group reacts with triethoxyphenylsilane as follows. -SiOH + PhSi (OEt) 3 → -SiOSi (OEt) 2 Ph + EtOH As a result, unless all SiOH groups react with triethoxyphenylsilane, the presence of -SiOH groups on the heat-cured film. Become.
【０００９】側鎖 SiH型シリコーンオイルは、一般式 (ここで、約100＜m+n＜約5000、0＜n/m＜0.5の値を一般
に有する)で表わされ、実際には市販品がそのまま用い
られる。The side chain SiH type silicone oil has the general formula (Here, generally having values of about 100 <m + n <about 5000 and 0 <n / m <0.5), and a commercially available product is actually used as it is.
【００１０】かかるシリコーンオイルの側鎖 SiH基は、
ジブチル錫ジウラレートによって代表される有機錫化合
物の存在下で、空気中の水分によって容易に加水分解さ
れる。シリコーンオイルの側鎖 SiH基がすべて加水分解
された状態は、表面エネルギーが上がりすぎるので望ま
しくなく、また次工程の末端SiOR型シリコーンオイルと
の反応割合からみても望ましくなく、そのため加水分解
されたままのSiOH基が約1〜10％、好ましくは約3〜7％
程度残存するように、トリエトキシフェニルシランとの
反応が行われる。なお、SiH基加水分解触媒としては、
有機錫化合物以外にも、無機塩、白金系化合物、チタン
系化合物、アルミニウム化合物等を用いることができ
る。The side chain SiH group of the silicone oil is
It is easily hydrolyzed by moisture in the air in the presence of organotin compounds represented by dibutyltin dilaurate. The state where all the side chain SiH groups of the silicone oil are hydrolyzed is not desirable because the surface energy rises too much, and it is also not desirable in view of the reaction ratio with the terminal SiOR type silicone oil in the next step. SiOH groups of about 1-10%, preferably about 3-7%
The reaction with triethoxyphenylsilane is carried out so that some extent remains. As the SiH-based hydrolysis catalyst,
In addition to the organic tin compound, an inorganic salt, a platinum compound, a titanium compound, an aluminum compound or the like can be used.
【００１１】これらの側鎖 SiH型シリコーンオイル、ト
リエトキシフェニルシランおよび有機錫化合物は、それ
らをトルエン、クロロホルム等の有機溶媒に溶解させた
溶液として調製され、それをエアガン等を用いて金型表
面に塗布した後、約150〜250℃で約1〜10分間程度加熱
することにより硬化膜を形成させる。These side chain SiH type silicone oils, triethoxyphenylsilane and organotin compounds are prepared as a solution prepared by dissolving them in an organic solvent such as toluene or chloroform, and the solution is prepared by using an air gun or the like. And then heated at about 150 to 250 ° C. for about 1 to 10 minutes to form a cured film.
【００１２】形成される硬化膜上には、末端SiOR型シリ
コーンオイルまたは (CH3)3SiOC2H5 (C3H7)3SiOC2H5 等のモノアルコキシシラン化合物と触媒量の有機錫化合
物等よりなる混合物が塗布された後、約150〜250℃で約
1〜10分間程度の加熱が行われ、硬化膜上の-SiOH基と末
端SiOR基との間の反応によるキャッピングが行われる。On the cured film that is formed, a terminal SiOR-type silicone is
Corn oil or (CHThree)ThreeSiOCTwoHFive (CThreeH7)ThreeSiOCTwoHFive Compounds such as monoalkoxysilane compounds with a catalytic amount of organotin
After applying a mixture consisting of
Heating is performed for about 1 to 10 minutes, and -SiOH groups and powder on the cured film are removed.
Capping by reaction with the edge SiOR groups takes place.
【００１３】[0013]
【発明の効果】金型表面に存在させた、側鎖 SiH型シリ
コーンオイルに由来する官能性基(-SiOH基)をキャッピ
ングすることにより、離型膜と成形物との間の滑りおよ
び離型性が改善され、離型膜の耐連続使用性の著しい向
上が達成される。EFFECT OF THE INVENTION By capping the functional group (-SiOH group) derived from the side chain SiH type silicone oil, which is present on the surface of the mold, slip between the release film and the molded article and release And the continuous use resistance of the release film is significantly improved.
【００１４】[0014]
【実施例】次に、実施例について本発明を説明する。Next, the present invention will be described by way of examples.
【００１５】実施例１ 側鎖 SiH型シリコーンオイル（日本ユニカー製品 FZ-38
75）2g、トリエトキシフェニルシラン10gおよびジブチ
ル錫ジウラレート0.01gをトルエン100gに溶解させた溶
液を、5％水酸化ナトリウム水溶液中に室温下で1時間浸
漬させた金型表面にエアガンを用いて塗布し、これを20
0℃で5分間加熱して硬化膜を形成させた。Example 1 Side-chain SiH type silicone oil (Nihon Unicar product FZ-38
75) 2g, triethoxyphenylsilane 10g, and dibutyltin dilaurate 0.01g dissolved in 100g toluene were applied to the surface of the mold immersed in a 5% aqueous sodium hydroxide solution at room temperature for 1 hour using an air gun. And this is 20
A cured film was formed by heating at 0 ° C for 5 minutes.
【００１６】この硬化膜上に、末端SiOR型シリコーンオ
イル（同社製品 FZ-3704）10gおよびジブチル錫ジウラ
レート0.01gの混合物を塗布し、200℃で5分間加熱して
キャッピングを行った。On this cured film, a mixture of 10 g of terminal SiOR type silicone oil (FZ-3704, manufactured by the same company) and 0.01 g of dibutyltin dilaurate was applied and heated at 200 ° C. for 5 minutes for capping.
【００１７】このようにしてキャッピング硬化膜を表面
に形成させた金型を用い、アクリルゴムの加硫成形を成
形圧100kg/cm2、成形温度220℃、成形時間3分間の条件
下で行い、Ｏリングを加硫成形した。その結果、金型表
面への１回のキャッピング硬化膜の形成だけで、成形回
数50回迄良好な離型性を示すことが認められた。Using a mold having a capping cured film formed on the surface in this manner, vulcanization molding of acrylic rubber is performed under conditions of a molding pressure of 100 kg / cm 2 , a molding temperature of 220 ° C., and a molding time of 3 minutes. The O-ring was vulcanized and molded. As a result, it was confirmed that the mold releasing property was excellent up to 50 times by forming the capping cured film only once on the surface of the mold.
【００１８】これに対して、硬化膜のキャッピングを行
わない金型の場合には、成形回数15回で離型時に製品の
ちぎれがみられた。On the other hand, in the case of the mold in which the cured film was not capped, the product was torn when the mold was released after 15 moldings.
【００１９】実施例２ 実施例１において、末端SiORシリコーンオイルの代り
に、モノメトキシトリメチルシラン(CH3)3SiOCH3の同量
を用いてキャッピングを行い、成形回数50回迄の良好な
離型性を確認した。Example 2 In Example 1, capping was performed using the same amount of monomethoxytrimethylsilane (CH 3 ) 3 SiOCH 3 instead of the terminal SiOR silicone oil, and good mold release was performed up to 50 times. I confirmed the sex.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０８Ｌ 83/06 ＬＲＴ Ｃ０８Ｌ 83/06 ＬＲＴ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location C08L 83/06 LRT C08L 83/06 LRT
Claims (1)
コキシフェニルシランおよびSiH基加水分解触媒を溶解
させた有機溶媒溶液を金型表面に塗布し、加熱硬化膜を
形成させた後、末端 SiOR型シリコーンオイルまたはモ
ノアルコキシシラン化合物および有機錫化合物の混合物
を塗布して加熱することを特徴とする成形用金型の離型
処理方法。1. A side-chain SiH type silicone oil, a trialkoxyphenylsilane, and an organic solvent solution in which a SiH group hydrolysis catalyst is dissolved are applied to the mold surface to form a heat-cured film, and then a terminal SiOR type silicone is formed. A mold releasing treatment method for a molding die, which comprises applying an oil or a mixture of a monoalkoxysilane compound and an organic tin compound and heating the mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26250795A JPH0976250A (en) | 1995-09-14 | 1995-09-14 | Mold releasing method for mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26250795A JPH0976250A (en) | 1995-09-14 | 1995-09-14 | Mold releasing method for mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0976250A true JPH0976250A (en) | 1997-03-25 |
Family
ID=17376769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26250795A Pending JPH0976250A (en) | 1995-09-14 | 1995-09-14 | Mold releasing method for mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0976250A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6868699B2 (en) | 2001-05-28 | 2005-03-22 | Asahi Glass Company, Limited | Glass forming mold |
| KR101596275B1 (en) * | 2015-07-31 | 2016-02-23 | 비케이파머 주식회사 | Tableting equipment having coating layer for modifying a surface and method for forming a coating layer to modify surface |
-
1995
- 1995-09-14 JP JP26250795A patent/JPH0976250A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6868699B2 (en) | 2001-05-28 | 2005-03-22 | Asahi Glass Company, Limited | Glass forming mold |
| KR101596275B1 (en) * | 2015-07-31 | 2016-02-23 | 비케이파머 주식회사 | Tableting equipment having coating layer for modifying a surface and method for forming a coating layer to modify surface |
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| EP4000850B1 (en) | Tire vulcanization bladder | |
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