JPS5947253A - Melamine resin molding material - Google Patents
Melamine resin molding materialInfo
- Publication number
- JPS5947253A JPS5947253A JP15863182A JP15863182A JPS5947253A JP S5947253 A JPS5947253 A JP S5947253A JP 15863182 A JP15863182 A JP 15863182A JP 15863182 A JP15863182 A JP 15863182A JP S5947253 A JPS5947253 A JP S5947253A
- Authority
- JP
- Japan
- Prior art keywords
- melamine resin
- melamine
- molding material
- diglycidyl ether
- polyethylene glycol
- 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.)
- Granted
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は耐衝撃性にすぐれたメラミン樹脂成形材料に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a melamine resin molding material having excellent impact resistance.
メラミン樹脂成形材料は汎用性に富みすぐれてイル。し
かし、耐衝撃性があまり良くないのカ欠点であった。Melamine resin molding materials are highly versatile and highly effective. However, the drawback was that the impact resistance was not very good.
この発明は、このような事情に鑑みなされたものであっ
て、メラミン樹バ旨とじて−メラミンとポリエチレング
リコールジグリシジルエーテルとホルムアルデヒドを反
応させて得られるものが用いられていることを特徴とす
るメラミン樹脂成形材料を要旨とする。以下にこれを詳
しく述べる。The present invention was made in view of the above circumstances, and is characterized in that a melamine tree resin obtained by reacting melamine, polyethylene glycol diglycidyl ether, and formaldehyde is used. The main topic is melamine resin molding materials. This will be explained in detail below.
発明者の見出したところによれば、従来のメラミン樹脂
成形材料は、メラミンのトリアジン骨核同士がメチレン
結合またはメチルエーテル結合を介して架橋を進める結
果、架橋密度が高くなり硬い成形品を作っている。すな
わち、成形品の耐衝撃性を悪くしている。トリアジン骨
格間にエチレングリコールというソフトセグメントを導
入すれば、上記のような結果の起きることが避けられ、
成形品の耐衝撃性が向上する。According to the inventor's findings, in conventional melamine resin molding materials, the triazine cores of melamine proceed to crosslink with each other via methylene bonds or methyl ether bonds, resulting in a high crosslinking density and a hard molded product. There is. In other words, the impact resistance of the molded product is deteriorated. By introducing a soft segment called ethylene glycol between the triazine skeletons, the above results can be avoided.
Improves the impact resistance of molded products.
このようにして、この発明にかがるメラミン樹脂成形材
料は、メラミンとポリエチレングリコールジグリシジル
エーテルとホルムアルデヒドヲ反広させることによって
得られるものが用いられる。In this way, the melamine resin molding material according to the present invention is obtained by dispersing melamine, polyethylene glycol diglycidyl ether, and formaldehyde.
樹脂の合成に際しては、メラミンＣＭ）に対するポＩＪ
ｘチＶングリコールジグリシジルエーテル（ＰＥＧＥ
）の重量比（ＰＥＧＥ）／（Ｍ）を０．２０〜０．７
５に選ぶとともに、メラミンとポリエチレングリコール
ジグリシジルエーテルのモル数の差に対するホルムアル
デヒド（Ｆ）のモル比（Ｆ）／（Ｍ−ＰＥＧＥ）を２．
０〜３．０に選ぶことが好ましい。メラミンに対するポ
リエチレングリコールジグリシジルエーテルの重量比が
０．２未満では耐衝撃性の向上が顕著でなく、０．７５
を超えるとポリエチレングリコールジグリシジルエーテ
ルがアミンの硬化作用でゲル化しやすくなる。メラミン
とポリエチレングリコールジグリシジルエーテルのモル
数の差に対するホルムアルデヒドのモル比が２．０未満
では吸水率が大きくなる傾向がみられ、３．０を超える
と架橋密度が高くなりすぎて再びデュポン衝撃値が低下
する傾向がでてくる。ところで、表面硬度が低下すると
成形品は傷つきやすくなる。成形品の吸水率が大きくな
っても困る。また、メラミン樹脂合成時にゲル化が起き
てもいけない。このような観点からすれば、メラミン樹
脂合成時の原料配合は、上記の数値範囲で選ぶことが望
ましいと言える。When synthesizing the resin, PoIJ for melamine CM)
x-glycol diglycidyl ether (PEGE)
) weight ratio (PEGE)/(M) of 0.20 to 0.7
5, and the molar ratio (F)/(M-PEGE) of formaldehyde (F) to the difference in moles between melamine and polyethylene glycol diglycidyl ether is set to 2.
It is preferable to select 0 to 3.0. If the weight ratio of polyethylene glycol diglycidyl ether to melamine is less than 0.2, the impact resistance will not be significantly improved;
When the amount exceeds 100%, polyethylene glycol diglycidyl ether tends to gel due to the curing action of the amine. If the molar ratio of formaldehyde to the molar difference between melamine and polyethylene glycol diglycidyl ether is less than 2.0, the water absorption tends to increase, and if it exceeds 3.0, the crosslinking density becomes too high and the DuPont impact value again increases. tends to decrease. By the way, when the surface hardness decreases, the molded product becomes easily damaged. It is also a problem if the water absorption rate of the molded product increases. Also, gelation must not occur during melamine resin synthesis. From this point of view, it can be said that it is desirable to select the raw material composition during melamine resin synthesis within the above numerical range.
このようにして得られるメラミン樹脂に配合される原材
料は通常のものであり、成形材料化する方法も通常のも
のである。The raw materials blended into the melamine resin obtained in this way are conventional ones, and the method for making it into a molding material is also a conventional one.
この発明にかかるメラミン樹脂成形材料は、上記のよう
にして合成時にポリエチレングリコールジグリシジルエ
ーテルが配合されたメラミン樹脂が用ｔｘられているた
め、耐衝撃性の充分なる向上をなし得ている。The melamine resin molding material according to the present invention uses a melamine resin blended with polyethylene glycol diglycidyl ether during synthesis as described above, and therefore has sufficiently improved impact resistance.
つぎに、実施例を従来例と併せて述べる。Next, an example will be described together with a conventional example.
〔実施例１〕
メラミン１２６Ｉｉ、分子量５２６のポリエチレングリ
コールジグリシジルエーテルＬ８．９．！ｉ＋、水１２
６ｇ’ｅｌｌの三つロフラスコに仕込んだ後、昇温し、
９５℃で２時間反応させた。次に、３７チホルマリン１
５６．３＆を注加し、７５〜８０℃で２５分間反応させ
た。得られたシラツブを解砕ニーダに移し、パルプ１１
９．９を少しずつ投入した。[Example 1] Melamine 126Ii, polyethylene glycol diglycidyl ether L8.9 with a molecular weight of 526. ! i+, water 12
After charging into a 6g'ell three-bottle flask, raise the temperature,
The reaction was carried out at 95°C for 2 hours. Next, 37 formalin 1
56.3& was added and reacted at 75-80°C for 25 minutes. The obtained shirabu was transferred to a crushing kneader and pulp 11
I added 9.9 little by little.
２０分間の浸透解砕で得られた浸透品を金網底のバスケ
ットに移し、８０℃の熱風乾゛燥機で処理を行なった。The permeated product obtained by osmotic crushing for 20 minutes was transferred to a basket with a wire mesh bottom and treated in a hot air dryer at 80°C.
得られた乾燥品１００部に、離型剤としてステアリン酸
亜鉛０．６部と、硬化剤として無水フタル酸０．０４部
を加え、ボットミルで粉砕し、成形材料を得た。To 100 parts of the obtained dry product were added 0.6 parts of zinc stearate as a mold release agent and 0.04 parts of phthalic anhydride as a hardening agent, and the mixture was ground in a bot mill to obtain a molding material.
得られたパウダー成形材料を用いて、デュポン衝撃、シ
ャルピー衝撃強さ、吸水率、そしてパーコール硬度の各
性能評価を行なった。Using the obtained powder molding material, performance evaluations were performed on DuPont impact strength, Charpy impact strength, water absorption, and Percoll hardness.
〔実施例２〜１２〕
ポリエチレングリコールジグリシジルエーテル量、３７
憾ホルマリン量、バルブ量、無水フタル酸量を第１表の
ように変えたほかは、実施例１と同様にして成形材料を
得、同様にして性能評価を行った。[Examples 2 to 12] Amount of polyethylene glycol diglycidyl ether, 37
A molding material was obtained in the same manner as in Example 1, except that the amount of formalin, the amount of bulbs, and the amount of phthalic anhydride were changed as shown in Table 1, and the performance was evaluated in the same manner.
（以 下 余 白）
〔従来例〕
メラミン１２６＃、水１２６．９．水酸化ナトリウムの
１０係水溶液４ｃｃ、そして３７係ホルマリン１４６．
９を仕込み、７５〜８０℃で９０分反応させた。得られ
たシラツブを解砕ニーダに移シ、バルブ７７１１を少し
ずつ投入した。２０分間の浸透解砕で得られた浸透品を
金網底のバスケットに移し、８０℃の熱風乾燥機で処理
を行なった。得られた乾燥品１００部に、離型剤として
ステアリン酸亜鉛０．６部と、硬化剤として無水フタル
酸０．０４部を加え、ポットミルで粉砕し、成形材料を
得て−これ迄と同様の性能評価を行なった。(Left below) [Conventional example] Melamine 126#, water 126.9. 4 cc of aqueous solution of sodium hydroxide in proportion 10, and 146 cc of formalin in proportion 37.
9 was charged and reacted at 75 to 80°C for 90 minutes. The obtained shirabu was transferred to a crushing kneader, and valve 7711 was introduced little by little. The permeated product obtained by osmotic crushing for 20 minutes was transferred to a basket with a wire mesh bottom and treated in a hot air dryer at 80°C. To 100 parts of the dried product obtained, 0.6 parts of zinc stearate as a mold release agent and 0.04 parts of phthalic anhydride as a hardening agent were added and ground in a pot mill to obtain a molding material - the same as before. We conducted a performance evaluation.
実施例および従来例の性能評価を原料配合比と併せて示
すと第２表のとおりであり、実施例はいずれも吸水率や
パーコール硬度をあまり低下させることなく、耐衝撃性
の向上を図り得ている。Table 2 shows the performance evaluation of the examples and conventional examples, together with the raw material blending ratio, and the examples show that the impact resistance can be improved without significantly lowering the water absorption rate or Percoll hardness. ing.
（以 ド 余 白）(The remainder is white)
Claims (2)
ングリコールジグリシジルエーテルとホルムアルデヒド
を反応させて得られるものが用いられていることを特徴
とするメラミン樹脂成形材料。(1) A melamine resin molding material characterized in that a melamine resin obtained by reacting melamine, polyethylene glycol diglycidyl ether, and formaldehyde is used.
対するポリエチレングリコールジグリシジルエーテルの
重量比が０．２０−０．７５となり、メラミンとポリエ
チレングリコールジグリシジルエーテルのモル数の差に
対するホルムアルデヒドのモル比が２．０〜３．０とな
るように選ばれている特許請求の範囲第１項記載のメラ
ミン樹脂成形材料。(2) When synthesizing melamine resin, the weight ratio of polyethylene glycol diglycidyl ether to melamine is 0.20-0.75, and the molar ratio of formaldehyde to the difference in the number of moles between melamine and polyethylene glycol diglycidyl ether is 2. The melamine resin molding material according to claim 1, wherein the melamine resin molding material is selected to have a molecular weight of .0 to 3.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15863182A JPS5947253A (en) | 1982-09-11 | 1982-09-11 | Melamine resin molding material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15863182A JPS5947253A (en) | 1982-09-11 | 1982-09-11 | Melamine resin molding material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5947253A true JPS5947253A (en) | 1984-03-16 |
| JPH058208B2 JPH058208B2 (en) | 1993-02-01 |
Family
ID=15675927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15863182A Granted JPS5947253A (en) | 1982-09-11 | 1982-09-11 | Melamine resin molding material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5947253A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2584027Y2 (en) * | 1993-03-02 | 1998-10-30 | 矢崎総業株式会社 | Low NOx gas burner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543791A (en) * | 1977-06-11 | 1979-01-12 | Yoshihiko Suzuki | Automatic control escalator |
-
1982
- 1982-09-11 JP JP15863182A patent/JPS5947253A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543791A (en) * | 1977-06-11 | 1979-01-12 | Yoshihiko Suzuki | Automatic control escalator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH058208B2 (en) | 1993-02-01 |
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