JPS5825337B2 - Method for manufacturing vinyl chloride resin foam - Google Patents
Method for manufacturing vinyl chloride resin foamInfo
- Publication number
- JPS5825337B2 JPS5825337B2 JP52083553A JP8355377A JPS5825337B2 JP S5825337 B2 JPS5825337 B2 JP S5825337B2 JP 52083553 A JP52083553 A JP 52083553A JP 8355377 A JP8355377 A JP 8355377A JP S5825337 B2 JPS5825337 B2 JP S5825337B2
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- chloride resin
- foam
- resin foam
- parts
- 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
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Description
【発明の詳細な説明】
この発明は塩化ビニル樹脂発泡体の製造方法の、′改良
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in a method for producing vinyl chloride resin foam.
従来の塩化ビニル樹脂発泡体は、軟質のものでもウレタ
ン発泡体などに比べれば比重が大きく、製品の取扱い、
加工、運搬の面で作業性がよくない。Conventional polyvinyl chloride resin foams, even if they are soft, have a higher specific gravity than urethane foams, etc., making it difficult to handle the product.
Workability is not good in terms of processing and transportation.
また製造には主に発泡剤を配合したプラスチゾル等が使
用されるが、連続方式では一般に厚さ３〜５ｍｍ程度の
シート状物しか得られず、厚手の発泡体は製造が困難で
ある。In addition, plastisol containing a foaming agent is mainly used for production, but the continuous method generally yields only a sheet-like product with a thickness of about 3 to 5 mm, making it difficult to produce thick foams.
またバッチ方式の場合は、ある程度厚手の発泡体を得る
ことはできても、・モールドを使用するので寸法に限度
があり、したがって用途も自ずと制約をうけるうらみが
ある。In addition, in the case of a batch method, although it is possible to obtain a foam with a certain degree of thickness, there is a limit to the dimensions because a mold is used, and therefore, there is a risk that the application is naturally restricted.
この発明は上記事情を根本的に改善した新規な塩化ｅニ
ル樹脂発泡体の製造方法を提供する。This invention provides a novel method for producing an enyl chloride resin foam that fundamentally improves the above situation.
この発明の製造方法は、塩化ビニル樹脂５０〜２００部
（重量部）に対し、有機インシアネート１０〜１００部
と、有機イソシアネートに対し本０．９〜２．０当量と
、少量の触媒とを混合撹拌することを特徴とする。The production method of the present invention includes 50 to 200 parts (by weight) of vinyl chloride resin, 10 to 100 parts of organic incyanate, 0.9 to 2.0 equivalents of organic isocyanate, and a small amount of catalyst. It is characterized by mixing and stirring.
塩化ビニル樹脂は樹脂単独はもちろんのことＤＯＰ 、
ＤＢＰ 、ＴＣＰ等の可塑剤と混合して、ペーストの状
態にしたものも使用できる。PVC resin is not only resin alone but also DOP,
A paste obtained by mixing with a plasticizer such as DBP or TCP can also be used.
有機インシアネートはＴＤＩをはじめ公知のものが使用
できる。As the organic incyanate, known ones including TDI can be used.
触媒も、ウレタンフオームの発泡に用いられるものなら
全て使用可能で、主なものとしてはアミン系触媒と錫系
触媒を挙げることができる。Any catalyst used for foaming urethane foam can be used, and the main ones include amine catalysts and tin catalysts.
この発明の製造方法は、上述した塩化ビニル樹脂と、有
機イソシアネートと触媒と水とを必須成分に選択して、
これらを混合撹拌するものである。The production method of this invention selects the above-mentioned vinyl chloride resin, organic isocyanate, catalyst, and water as essential components,
These are mixed and stirred.
このようにすると、有機イソシアネートと水が発泡反応
し、その発泡熱で塩化ビニル樹脂がキュア（溶融ゲル化
）されるとともに、この塩化ビニル樹脂が上記発泡反応
により発泡してくる。In this way, the organic isocyanate and water undergo a foaming reaction, and the vinyl chloride resin is cured (melted into a gel) by the foaming heat, and the vinyl chloride resin is foamed by the foaming reaction.
かくして得られた塩化ビニル発泡体は、さらに後キユア
を施してキュアを促進させてもよい。The vinyl chloride foam thus obtained may be further post-cured to promote curing.
この発明では有機イソシアネートの配合量を塩化ビニル
樹脂５０〜２００部に対し１０〜１００部に限定する必
要があるが、それは、有機イソシアネートが１０部を下
回ると、発泡が困難となり、また１００部を上回ると、
塩化ビニル樹脂の性質が損なわれるためである。In this invention, it is necessary to limit the blending amount of organic isocyanate to 10 to 100 parts per 50 to 200 parts of vinyl chloride resin, but this is because if the amount of organic isocyanate is less than 10 parts, foaming becomes difficult, and if the amount of organic isocyanate is less than 10 parts, If it exceeds,
This is because the properties of the vinyl chloride resin are impaired.
また、水の配合量は有機イソシアネートに対し０．９〜
２．０当量とするのが、発泡をスムーズに行なわせるの
に必要である。In addition, the amount of water added is 0.9 to 0.9 to the organic isocyanate.
An equivalent of 2.0 is necessary for smooth foaming.
この発明では任意成分として、末端ＯＨ基を有する化合
物、整泡剤、塩ビ用安定剤、可塑剤、顔料などを必要に
応じて添加することができる。In this invention, optional components such as a compound having a terminal OH group, a foam stabilizer, a stabilizer for vinyl chloride, a plasticizer, and a pigment can be added as necessary.
これらの添加剤のうち、末端ＯＨ基を有する化合物は、
有機イソシアネートとの反応性を有るが故に、塩化ビニ
ル樹脂の発泡化を安定にする効果があって、この発明の
目的に好ましい添加剤である。Among these additives, compounds with terminal OH groups are
Because of its reactivity with organic isocyanates, it has the effect of stabilizing the foaming of vinyl chloride resin, and is therefore a preferred additive for the purposes of this invention.
具体的には末端ＯＨ基を有するプレポリマーやポリオー
ル類などがあり、これを使用するときは塩化ビニル樹脂
に対する重量割合で５〜３０係添加することが好ましい
。Specifically, there are prepolymers and polyols having terminal OH groups, and when these are used, it is preferable to add 5 to 30 parts by weight relative to the vinyl chloride resin.
以上で明らかな如く、この発明は有機イソシアネートと
水との発泡反応を塩化ビニル樹脂の発泡に利用するもの
であり、これまでの塩化ビニル樹脂発泡体の製造と違っ
て、寸法や厚さの任意な発泡体を簡単に得ることができ
る。As is clear from the above, this invention utilizes the foaming reaction between organic isocyanate and water to foam vinyl chloride resin, and unlike the conventional manufacturing of vinyl chloride resin foams, it can be made to any size or thickness. foams can be easily obtained.
しかもこの発泡体は比重の小さいものが得られるのが特
長で、その軽量性の故に、取扱い、加工、運搬が容易で
ある。Moreover, this foam is characterized by its low specific gravity, and because of its light weight, it is easy to handle, process, and transport.
そして塩化ビニル樹脂を主体とするものであるから、同
樹脂の性質が十分生かされており、たとえば高周波加工
性においてすぐれた性能を発揮することができる。Since it is mainly composed of vinyl chloride resin, the properties of the resin are fully utilized and, for example, it can exhibit excellent performance in high frequency processability.
実症例
イソシアネートとを混合反応させた末端ＯＨ基をもつプ
レポリマー・・・・・・・・・・・・・・・・・・ ２
０／上記配合原料を混合撹拌して発泡せしめ、この発泡
体を１２０℃で３分間アフターキュアした。Actual case Prepolymer with terminal OH groups mixed and reacted with isocyanate 2
0/The above blended raw materials were mixed and stirred to foam, and the foam was after-cured at 120° C. for 3 minutes.
得られた発泡体は比重０．０４８の軟質塩化ビニルフオ
ームで、すぐれた高周波加工性を有するものであった。The obtained foam was a soft vinyl chloride foam with a specific gravity of 0.048 and had excellent high frequency processability.
Claims (1)
ソシアネート１０〜１００重量部と、有機ジイソシアネ
ートに対して水０．９〜２．０当量と、少量の触媒とを
混合撹拌することを特徴とする塩化ビニル樹脂発泡体の
製造方法。1 Characterized by mixing and stirring 50 to 200 parts by weight of vinyl chloride resin, 10 to 100 parts by weight of organic isocyanate, 0.9 to 2.0 equivalents of water to organic diisocyanate, and a small amount of catalyst. Method for producing vinyl chloride resin foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52083553A JPS5825337B2 (en) | 1977-07-14 | 1977-07-14 | Method for manufacturing vinyl chloride resin foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52083553A JPS5825337B2 (en) | 1977-07-14 | 1977-07-14 | Method for manufacturing vinyl chloride resin foam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5418869A JPS5418869A (en) | 1979-02-13 |
| JPS5825337B2 true JPS5825337B2 (en) | 1983-05-26 |
Family
ID=13805692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52083553A Expired JPS5825337B2 (en) | 1977-07-14 | 1977-07-14 | Method for manufacturing vinyl chloride resin foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5825337B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5899331U (en) * | 1981-12-24 | 1983-07-06 | 久保田コンクリ−ト工業株式会社 | Concrete pile shoes |
| JPS60195331U (en) * | 1984-05-31 | 1985-12-26 | 京葉ブランキング工業株式会社 | Tip of concrete pile |
-
1977
- 1977-07-14 JP JP52083553A patent/JPS5825337B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5899331U (en) * | 1981-12-24 | 1983-07-06 | 久保田コンクリ−ト工業株式会社 | Concrete pile shoes |
| JPS60195331U (en) * | 1984-05-31 | 1985-12-26 | 京葉ブランキング工業株式会社 | Tip of concrete pile |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5418869A (en) | 1979-02-13 |
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