JPH0948028A - Surface treating method for mold - Google Patents
Surface treating method for moldInfo
- Publication number
- JPH0948028A JPH0948028A JP21952195A JP21952195A JPH0948028A JP H0948028 A JPH0948028 A JP H0948028A JP 21952195 A JP21952195 A JP 21952195A JP 21952195 A JP21952195 A JP 21952195A JP H0948028 A JPH0948028 A JP H0948028A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- oil
- methacrylic acid
- coating
- polysiloxane oil
- 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
- 238000000034 method Methods 0.000 title claims description 6
- -1 polysiloxane Polymers 0.000 claims abstract description 21
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 19
- 238000000465 moulding Methods 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000004381 surface treatment Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 abstract description 16
- 238000000576 coating method Methods 0.000 abstract description 16
- 229920002545 silicone oil Polymers 0.000 abstract description 7
- 238000007598 dipping method Methods 0.000 abstract description 2
- 229920001971 elastomer Polymers 0.000 abstract description 2
- 239000002904 solvent Substances 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 abstract 1
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 229910052731 fluorine Inorganic materials 0.000 abstract 1
- 239000011737 fluorine Substances 0.000 abstract 1
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- 125000005395 methacrylic acid group Chemical group 0.000 description 5
- 229920000800 acrylic rubber Polymers 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 229920000058 polyacrylate Polymers 0.000 description 4
- 229920001973 fluoroelastomer Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Paints Or Removers (AREA)
- Silicon Polymers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、成形用金型の表面
処理方法に関する。更に詳しくは、成形用金型の表面に
シリコーンオイル被膜を形成させる表面処理方法に関す
る。TECHNICAL FIELD The present invention relates to a surface treatment method for a molding die. More specifically, it relates to a surface treatment method for forming a silicone oil film on the surface of a molding die.
【０００２】[0002]
【従来の技術】ゴム、樹脂の成形に際し、成形用金型の
表面に焼付型離型剤としてシリコーンオイルの被膜を形
成させたものが用いられているが、被膜形成に時間がか
かったり、あるいはアクリルゴムやフッ素ゴムの加硫成
形にはあまり効果のない場合が多い。2. Description of the Related Art In molding rubber or resin, a mold having a silicone oil coating formed on its surface as a baking mold release agent is used, but it takes a long time to form the coating, or In many cases, it is not very effective for vulcanization molding of acrylic rubber and fluororubber.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、シリ
コーンオイル被膜を短時間で形成させることができ、し
かもアクリルゴムやフッ素ゴムの加硫成形などに用いた
場合にも有効な離型性を示す成形用金型の表面処理方法
を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to form a silicone oil film in a short period of time, and moreover, it is effective in releasability even when used for vulcanization molding of acrylic rubber or fluororubber. To provide a surface treatment method for a molding die.
【０００４】[0004]
【課題を解決するための手段】かかる本発明の目的は、
成形用金型の表面にメチルハイドロジエンポリシロキサ
ンオイル-メタクリル酸変性ポリシロキサンオイル混合
物溶液を塗布した後、約200℃以上の温度に加熱する成
形用金型の表面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.
This can be achieved by a method of treating the surface of a molding die by applying a solution of a methylhydrogen polysiloxane oil-methacrylic acid-modified polysiloxane oil mixture on the surface of the molding die and then heating it to a temperature of about 200 ° C. or higher.
【０００５】[0005]
【発明実施の形態】次の一般式で表されるメチルハイド
ロジエンポリシロキサンオイル (CH3)3SiO[Si(CH3)2O]n[SiH(CH3)O]mSi(CH3)3 と次の一般式で表されるメタクリル酸変性ポリシロキサ
ンオイル CH2＝C(CH3)COORSi(CH3)2O[Si(CH3)2O]nSi(CH3)2ROCOC
(CH3)＝CH2 R：C1〜C3のアルキレン基 とは、前者が約10〜40重量%、好ましくは約10〜25重量
%、また後者が約90〜60重量%、好ましくは約90〜75重量
%の割合で混合して用いられる。メチルハイドロジエン
ポリシロキサンオイルがこれ以上の割合で用いられる
と、加熱して形成される被膜に多数のクラックが入り、
均一な硬化被膜が形成されなくなる。BEST MODE FOR CARRYING OUT THE INVENTION Methyl hydrate represented by the following general formula
Rhodiene polysiloxane oil (CHThree)ThreeSiO [Si (CHThree)TwoO] n [SiH (CHThree) O] mSi (CHThree)Three And methacrylic acid-modified polysiloxa represented by the following general formula
Oil CHTwo= C (CHThree) COORSi (CHThree)TwoO [Si (CHThree)TwoO] nSi (CHThree)TwoROCOC
(CHThree) = CHTwo R: C1~ CThreeThe alkylene group of the former is about 10 to 40% by weight, preferably about 10 to 25% by weight.
%, The latter about 90-60% by weight, preferably about 90-75%
Used by mixing at a ratio of%. Methyl hydrogen
Polysiloxane oil is used at a higher ratio
And a lot of cracks enter into the coating formed by heating,
A uniform cured film cannot be formed.
【０００６】これらのポリシロキサンオイル混合物は、
これら共通の可溶性溶媒であるケトン類、エステル類
等、好ましくはメチルエチルケトンに、約0.5〜5重量
%、好ましくは約1〜3重量%の濃度で溶解させた後、噴
霧、浸漬等の塗布手段により、成形用金型表面に塗布す
る。These polysiloxane oil mixtures are
These common soluble solvents, such as ketones, esters, etc., preferably methyl ethyl ketone, are added in an amount of about 0.5 to 5% by weight.
%, Preferably about 1 to 3% by weight, and then applied to the surface of the molding die by application means such as spraying or dipping.
【０００７】塗布されたポリシロキサンオイル混合物溶
液は、金型を約200℃以上の温度、好ましくは約210〜25
0℃に約5〜15分間程度加熱することにより、金型表面に
容易にシリコーンオイルの硬化被膜を形成させる。この
ような硬化被膜の形成は、下記反応式に示されるよう
に、加熱条件下でメチルハイドロジエンポリシロキサン
オイルとメタクリル酸変性ポリシロキサンオイルとの反
応により始めて可能であり、これら個々のシリコーンオ
イル単独からでは形成されない。The applied polysiloxane oil mixture solution is applied to the mold at a temperature of about 200 ° C. or higher, preferably about 210-25.
By heating to 0 ° C. for about 5 to 15 minutes, a cured coating of silicone oil can be easily formed on the mold surface. The formation of such a cured coating is possible only by the reaction of methylhydrogen polysiloxane oil and methacrylic acid-modified polysiloxane oil under heating conditions as shown in the following reaction formula. Not formed from.
【０００８】[0008]
【作用】および[Action] and
【発明の効果】メチルハイドロジエンポリシロキサンと
メタクリル酸変性ポリシロキサンは、加熱条件下で次の
ように反応し、 もはやその硬化被膜中に成形高分子物質と粘着するよう
な極性基(OH基、NH2基、COOH基等)を含まないため、離
型性の悪いアクリルゴムやフッ素ゴムの加硫成形に用い
た場合においても、その離型性は良好である。[Effects of the Invention] Methylhydrogen polysiloxane and methacrylic acid-modified polysiloxane react as follows under heating conditions, Suitable for vulcanization molding of acrylic rubber or fluororubber with poor releasability, because the cured coating no longer contains polar groups (OH group, NH 2 group, COOH group, etc.) that adhere to the molding polymer substance. Even if it is present, its releasability is good.
【０００９】また、Si−O−Si結合が基本骨格であるた
め、硬化被膜がムラなく形成され、局部的に厚い被膜が
形成されるようなこともなく、アルカリ洗浄液による洗
浄除去も容易である。Further, since the Si-O-Si bond is the basic skeleton, a cured coating is formed evenly, a thick coating is not locally formed, and it can be easily removed by washing with an alkali washing liquid. .
【００１０】更に、金型表面でのシリコーンオイル被膜
の形成も短時間で行うことができるので、被膜形成工程
を製造ライン上で実施することも可能である。Further, since the silicone oil coating can be formed on the surface of the mold in a short time, the coating forming step can be carried out on the production line.
【００１１】[0011]
【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.
【００１２】実施例 メチルハイドロジエンポリシロキサンオイル(信越化学
製品 KF-99)5gおよびメタクリル酸変性ポリシロキサン
オイル(信越化学製品 X-22-164B)15gをメチルエチルケ
トン200gに溶解させたポリシロキサンオイル混合物溶液
を、エアー式スプレ管に入れて、成形用金型表面に噴霧
した。その後、この金型を220℃に加熱した恒温槽に入
れ、10分間加熱した後、室温迄放冷した。金型表面に形
成された硬化被膜を光学顕微鏡で観察すると、そこに均
一な被膜の形成されていることが確認された。EXAMPLE A polysiloxane oil mixture solution prepared by dissolving 5 g of methylhydrogen polysiloxane oil (Shin-Etsu Chemical product KF-99) and 15 g of methacrylic acid-modified polysiloxane oil (Shin-Etsu Chemical product X-22-164B) in 200 g of methyl ethyl ketone. Was placed in an air spray tube and sprayed onto the surface of the molding die. Then, the mold was placed in a constant temperature bath heated to 220 ° C., heated for 10 minutes, and then allowed to cool to room temperature. When the cured coating formed on the mold surface was observed with an optical microscope, it was confirmed that a uniform coating was formed there.
【００１３】比較例 実施例において、メチルハイドロジエンポリシロキサン
オイルとメタクリル酸変性ポリシロキサンオイルとをそ
れぞれ10gずつ用いると、形成された被膜の熱脆性が顕
著となり、冷却した被膜には多数のクラックが入ってい
ることが光学顕微鏡で確認された。このような被膜は、
成形時に剥がれて加硫成形品中に異物として混入するた
め、離型剤として用いることができない。Comparative Example In the examples, when 10 g each of methylhydrogenpolysiloxane oil and methacrylic acid-modified polysiloxane oil were used, the formed coating film became remarkable in thermal embrittlement, and a large number of cracks were formed in the cooled coating film. It was confirmed with an optical microscope that it was contained. Such a coating,
It cannot be used as a release agent because it peels off during molding and mixes into the vulcanized molded product as foreign matter.
【００１４】また、実施例の離型剤塗布金型を用いてア
クリルゴムの加硫成形を行い、加硫成形品を金型から引
出すときにかかる力（離型力）をプッシュプルゲージで
測定すると、1.2kg(n=10)の値を示した。Acrylic rubber was vulcanized and molded using the mold releasing agent-coated mold of the example, and the force (release force) applied when the vulcanized molded product was pulled out from the mold was measured with a push-pull gauge. Then, the value was 1.2 kg (n = 10).
【００１５】この離型剤の代りに、市販離型剤(Buarmar
Castorol社製品モノコート E272A)を用いた場合の離型
力を測定すると、3.6kg(n=10)であった。Instead of this release agent, a commercial release agent (Buarmar
The mold release force when using Monocoat E272A) manufactured by Castorol was 3.6 kg (n = 10).
Claims (1)
ンポリシロキサンオイル-メタクリル酸変性ポリシロキ
サンオイル混合物溶液を塗布した後、約200℃以上の温
度に加熱することを特徴とする成形用金型の表面処理方
法。1. A molding die characterized by applying a methylhydrogen polysiloxane oil-methacrylic acid modified polysiloxane oil mixture solution to the surface of the molding die and then heating to a temperature of about 200 ° C. or higher. Surface treatment method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21952195A JPH0948028A (en) | 1995-08-04 | 1995-08-04 | Surface treating method for mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21952195A JPH0948028A (en) | 1995-08-04 | 1995-08-04 | Surface treating method for mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0948028A true JPH0948028A (en) | 1997-02-18 |
Family
ID=16736784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21952195A Pending JPH0948028A (en) | 1995-08-04 | 1995-08-04 | Surface treating method for mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0948028A (en) |
-
1995
- 1995-08-04 JP JP21952195A patent/JPH0948028A/en active Pending
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