JPH0321493B2 - - Google Patents

Info

Publication number
JPH0321493B2
JPH0321493B2 JP19440281A JP19440281A JPH0321493B2 JP H0321493 B2 JPH0321493 B2 JP H0321493B2 JP 19440281 A JP19440281 A JP 19440281A JP 19440281 A JP19440281 A JP 19440281A JP H0321493 B2 JPH0321493 B2 JP H0321493B2
Authority
JP
Japan
Prior art keywords
weight
phenolic resin
special
resin
cement
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
Application number
JP19440281A
Other languages
Japanese (ja)
Other versions
JPS5899144A (en
Inventor
Yoshinori Eguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Lighting and Technology Corp
Original Assignee
Toshiba Lighting and Technology Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Lighting and Technology Corp filed Critical Toshiba Lighting and Technology Corp
Priority to JP19440281A priority Critical patent/JPS5899144A/en
Publication of JPS5899144A publication Critical patent/JPS5899144A/en
Publication of JPH0321493B2 publication Critical patent/JPH0321493B2/ja
Granted legal-status Critical Current

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  • Joining Of Glass To Other Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Description

【発明の詳細な説明】 発明の技術分野 本発明は管球用ベースセメントの改良に関す
る。TECHNICAL FIELD OF THE INVENTION The present invention relates to improvements in base cement for tubes.

発明の技術的背景 一般に白熱電球や放電灯においては封止バルブ
の端部にベースセメントによつて口金を接着して
いる。しかして、従来のベースセメントはノボラ
ツク形フエノール樹脂と松脂やセラツクなどの天
然樹脂とをアルコールなどの有機溶剤で溶解して
濃い液状のものとし、これにヘキサメチレンなど
の硬化剤、耐湿性を付与するためけい素樹脂およ
び炭酸カルシウムなどの無機充填材を配合し、数
時間混練して適度の粘度に練り上げたもので、こ
れを口金内面に塗布してバルブ端部に圧着し、所
定の温度で焼付けを行つてセメントを硬化させて
いる。Technical Background of the Invention In general, in incandescent lamps and discharge lamps, a cap is bonded to the end of a sealed bulb using base cement. Conventional base cement is made by dissolving novolac-type phenolic resin and natural resins such as pine resin and shellac in an organic solvent such as alcohol to form a thick liquid, which is then treated with a hardening agent such as hexamethylene and moisture resistance. In order to do this, silicone resin and inorganic fillers such as calcium carbonate are mixed and kneaded for several hours until it has an appropriate viscosity.The mixture is applied to the inside of the mouthpiece, crimped to the end of the valve, and heated to a predetermined temperature. The cement is hardened by baking.

背景技術の問題点 このようにして口金を接着した管球は長期点灯
により、セメントの熱劣化のため接着力が低下
し、口金がバルブから脱落する事故が発生する。Problems with the Background Art When a bulb with a cap attached in this manner is lit for a long period of time, the adhesion strength decreases due to thermal deterioration of the cement, resulting in an accident in which the cap falls off from the bulb.

セメントの接着強度を高めるためには、セメン
トの主成分であるフエノール樹脂の配合比を多く
すれば強度的には満足できるが、樹脂の熱収縮の
影響でバルブに生ずる歪みが大きくなり、バルブ
が破損するおそれがある。 In order to increase the adhesive strength of cement, increasing the blending ratio of phenolic resin, which is the main component of cement, will satisfy the strength requirement, but the distortion that occurs in the valve due to the effect of thermal contraction of the resin will increase, causing the valve to deteriorate. There is a risk of damage.

発明の目的 長期間過酷な使用条件にも耐えて接着性を維持
できる管球用ベースセメントを提供することを目
的とする。OBJECT OF THE INVENTION An object of the invention is to provide a base cement for tubes that can withstand harsh usage conditions for a long period of time and maintain adhesive properties.

発明の概要 ベースセメントにジメトキシパラキシレンとフ
エノールとを重合してなる特殊フエノール樹脂を
配合したことにより、ガラスの歪みに与える影響
が少なく、しかも熱安定性を向上させるものであ
る。Summary of the invention By blending a special phenol resin made by polymerizing dimethoxy paraxylene and phenol into the base cement, it has less influence on the distortion of glass and also improves thermal stability.

発明の実施例 次の配合比によつて各種のベースセメント素材
を試作した。Examples of the Invention Various base cement materials were trial-produced using the following blending ratios.

(イ) ノボラツク形フエノール樹脂 4.4重量％ (ロ) 天然樹脂（セラツク、ロジンなど）
3.9重量％ (ハ) けい素樹脂 1.0重量％ (ニ) 硬化剤 0.6重量％ (ホ) 特殊フエノール樹脂 １〜５重量％各種 (ヘ) 無機充填剤（炭酸カルシウム） 残部 これらのベースセメント素材９重量部に対しアル
コール１重量部の割合いで配合し、混練してベー
スセメントを試作して後述する各種試験を行なつ
た。上記特殊フエノール樹脂はジメトキシパラキ
シレンとフエノールとを重合させたもので、試験
には三井東圧株式会社製商品名ミレツクスXL−
225を使用した。(a) Novolac type phenolic resin 4.4% by weight (b) Natural resin (shellac, rosin, etc.)
3.9% by weight (c) Silicon resin 1.0% by weight (d) Hardening agent 0.6% by weight (e) Special phenolic resin 1 to 5% by weight (f) Inorganic filler (calcium carbonate) Balance 9 weights of these base cement materials 1 part by weight of alcohol to 1 part by weight, and kneaded to prepare a prototype base cement, and conducted various tests as described below. The above special phenolic resin is made by polymerizing dimethoxyparaxylene and phenol, and was tested under the trade name Millex XL- manufactured by Mitsui Toatsu Co., Ltd.
225 was used.

まず、これらの試作ベースセメントを用い、２
枚のガラス試験片を接着してその強度を調査し
た。焼付け条件は180℃の温度で20分間とした。
そして、これらの試験片を220℃の温度で長時間
加熱し接着強度の低下を調査した。この結果を第
１図に示す。図は横軸に加熱時間を時間の単位で
とり、縦軸にせん断強度をKg／cm2の単位でとつた
もので、曲線A1（破線）は特殊フエノール樹脂１
重量％のもの、曲線B1（１点鎖線）は同じく２重
量％のもの、曲線C1（２点鎖線）は同じく３重量
％のもの、曲線D1（３点鎖線）は同じく４重量％
のもの、曲線E1（４点鎖線）は同じく５重量％の
もの、曲線R1（実線）は特殊フエノール樹脂を含
まない従来のものの耐熱特性をそれぞれ示す。こ
の図から、特殊フエノール樹脂を１〜５重量％含
有するベースセメントはいずれも従来のものより
も耐熱性に優れており、特に特殊フエノール樹脂
を４〜５重量％含有するものが格別に優れてい
る。 First, using these prototype base cements, 2
Two glass test pieces were glued together and their strength was investigated. The baking conditions were 180°C for 20 minutes.
These test pieces were then heated at a temperature of 220°C for a long period of time to investigate the decrease in adhesive strength. The results are shown in FIG. In the figure, the horizontal axis shows the heating time in units of hours, and the vertical axis shows the shear strength in Kg/ cm2 , and the curve A 1 (dashed line) is for special phenolic resin 1.
Curve B 1 (dashed line) is the same 2% by weight, curve C 1 (double-dashed line) is the same 3% by weight, curve D 1 (three-dot chain line) is the same 4% by weight.
The curve E 1 (four-dot chain line) shows the heat resistance properties of the same 5% by weight product, and the curve R 1 (solid line) shows the heat resistance properties of the conventional product containing no special phenolic resin. From this figure, all base cements containing 1 to 5% by weight of special phenolic resin have better heat resistance than conventional ones, and those containing 4 to 5% by weight of special phenolic resin are particularly superior. There is.

つぎに、上述の試作ベースセメントを真鍮板上
に塊状にして２ｇを秤取し、180℃で20分間加熱
してセメントの広がる状態を調査した。この結果
を第２図の棒グラフで示す。図は横軸に試作品の
種類をA2〜R2で示し、縦軸に広がつた距離をmm
の単位でとつたもので、棒A2は特殊フエノール
樹脂が１重量％のもの、棒B2は特殊フエノール
樹脂が２重量％のもの、棒C2は特殊フエノール
樹脂が３重量％のもの、棒D2は特殊フエノール
樹脂が４重量％のもの、棒E2は特殊フエノール
樹脂が５重量％のもの、棒R2は特殊フエノール
樹脂を含まない従来のものの流動特性をそれぞれ
示す。この図から、特殊フエノール樹脂を１〜５
重量％含有するベースセメントはいずれも従来の
ものより流動特性が優れており、特に特殊フエノ
ール樹脂を５重量％含有するものが格別に優れて
いる。 Next, 2 g of the above-mentioned prototype base cement was weighed out in a lump on a brass plate, heated at 180° C. for 20 minutes, and the state in which the cement spread was investigated. The results are shown in the bar graph of FIG. In the figure, the horizontal axis shows the type of prototype as A 2 ~ R 2 , and the vertical axis shows the spread distance in mm.
Bar A 2 contains 1% by weight of special phenolic resin, Bar B 2 contains 2% by weight of special phenolic resin, Bar C 2 contains 3% by weight of special phenolic resin, Bar D 2 shows the flow characteristics of a product containing 4% by weight of special phenolic resin, bar E 2 shows the flow characteristics of a product containing 5% by weight of special phenolic resin, and bar R 2 shows the flow characteristics of a conventional product containing no special phenolic resin. From this figure, the special phenolic resin is 1 to 5
All of the base cements containing 5% by weight of the special phenolic resin have better flow properties than conventional ones, and the one containing 5% by weight of the special phenolic resin is particularly excellent.

つぎに、上述の試作ベースセメントを用い、定
格100V100Wの白熱電球に口金を接着した。そし
て、これらの試験電球を電気恒温槽に入れ215℃
の温度で長時間加熱して接着強度の低下を調査し
た。この結果を第３図に示す。図は横軸に加熱時
間を時間の単位でとり、縦軸にねじり強度をトル
クで測定しKgcmの単位でとり、曲線A3（破線）は
特殊フエノール樹脂１重量％のもの、曲線B3（１
点鎖線）は同じく２重量％のもの、曲線C3（２点
鎖線）は同じく３重量％のもの、曲線D3（３点鎖
線）は同じく４重量％のもの、曲線E3（４点鎖
線）は同じく５重量％のもの、曲線R3（実線）は
特殊フエノールを含まない従来のものの耐熱特性
をそれぞれ示す。この図から、特殊フエノール樹
脂を１〜５重量％含有するベースセメントはいず
れも従来のものよりも耐熱性に優れており、特に
特殊フエノール樹脂を４〜５重量％含有するもの
が格別に優れている。 Next, using the above-mentioned prototype base cement, we glued the base to an incandescent light bulb with a rating of 100V and 100W. Then, these test bulbs were placed in an electric thermostat at 215℃.
The decrease in adhesive strength was investigated by heating at a temperature of . The results are shown in FIG. In the figure, the horizontal axis shows the heating time in hours, and the vertical axis shows the torsional strength measured in terms of torque in Kgcm. Curve A 3 (dashed line) is for 1% by weight of special phenolic resin, curve B 3 ( 1
Curve C 3 (two-dot chain line) is also for 3% by weight, curve D 3 (three-dot chain line) is for 4% by weight, and curve E 3 (four-dot chain line) is for 4% by weight. ) shows the heat resistance properties of the same 5% by weight product, and the curve R 3 (solid line) shows the heat resistance properties of the conventional product containing no special phenol. From this figure, all base cements containing 1 to 5% by weight of special phenolic resin have better heat resistance than conventional ones, and those containing 4 to 5% by weight of special phenolic resin are particularly superior. There is.

つぎに、上述の白熱電球による接着試験品を定
格電流で長時間点灯して寿命時間で接着強度を測
定した。この結果を第４図に示す。図は横軸に点
灯時間を時間の単位でとり、縦軸にねじり強度を
トルクで測定しKgcmの単位でとり、曲線A4（破
線）は特殊フエノール樹脂１重量％のもの、曲線
B4（１点鎖線）は同じく２重量％のもの、曲線C4
（２点鎖線）は同じく３重量％のもの、曲線D4
（３点鎖線）は同じく４重量％のもの、曲線E4
（４点鎖線）は同じく５重量％のもの、曲線R4
（実線）は特殊フエノール樹脂を含まない従来の
ものの劣化特性をそれぞれ示す。この図から、特
殊フエノール樹脂を１〜５重量％含有するベース
セメントはいずれも従来のものよりも劣化特性に
優れており、特に特殊フエノール樹脂を４〜５重
量％含有するものが格別に優れている。 Next, the adhesive test product using the above-mentioned incandescent light bulb was lit for a long time at the rated current, and the adhesive strength was measured based on the life time. The results are shown in FIG. In the figure, the horizontal axis shows the lighting time in hours, and the vertical axis shows the torsional strength measured in terms of torque in Kgcm.
B 4 (dashed line) is also 2% by weight, curve C 4
(Two-dot chain line) is also 3% by weight, curve D 4
(Three-dot chain line) is also 4% by weight, curve E 4
(four-dot chain line) is also 5% by weight, curve R 4
(Solid lines) indicate the deterioration characteristics of conventional products that do not contain special phenolic resin. From this figure, all base cements containing 1 to 5% by weight of special phenolic resins have better deterioration characteristics than conventional ones, and those containing 4 to 5% by weight of special phenolic resins are particularly superior. There is.

以上の試験結果からベースセメント素材中に特
殊フエノール樹脂を１〜５重量％含有するものが
従来のものより耐熱性および耐久性に優れてい
る。 From the above test results, the base cement material containing 1 to 5% by weight of special phenol resin has superior heat resistance and durability compared to conventional cement materials.

なお、セメント素材各成分の望ましい配合比は
下記のとおりである。 Note that the desirable blending ratio of each component of the cement material is as follows.

(イ) ノボラツク形フエノール樹脂３〜５重量％ (ロ) 天然樹脂 ３〜4.5重量％ (ハ) けい素樹脂 0.5〜1.5重量％ (ニ) 硬化剤 0.5〜0.7重量％ (ホ) 特殊フエノール樹脂 １〜５重量％ (ヘ) 無機充填剤 残 なお、特殊フエノール樹脂としてイギリス国ア
ルブライトウイルソン社製商品名XYLOX225を
用いても同様であつた。(a) Novolac type phenolic resin 3-5% by weight (b) Natural resin 3-4.5% by weight (c) Silicone resin 0.5-1.5% by weight (d) Curing agent 0.5-0.7% by weight (e) Special phenolic resin 1 ~5% by weight (f) Inorganic filler remainder The same results were obtained when XYLOX225 (trade name, manufactured by Albright-Wilson, UK) was used as the special phenolic resin.

なお、本発明のベースセメントは総ての管球た
とえば一般電球、特殊電球、反射形電球、螢光ラ
ンプ、水銀ランプなどに用いて有効である。 The base cement of the present invention is effective for use in all types of bulbs, such as general bulbs, special bulbs, reflective bulbs, fluorescent lamps, and mercury lamps.

発明の効果 本発明の管球用ベースセメントはノボラツク形
フエノール樹脂、天然樹脂、けい素樹脂、硬化
剤、ジメトキシパラキシレンとフエノールとを重
合してなる特殊フエノール樹脂および無機充填剤
からなるセメント素材を有機溶剤で混練したの
で、熱劣化による接着強度の低下が少なく、寿命
末期に到るまで口金脱落のおそれがない。Effects of the Invention The base cement for tubes of the present invention is a cement material consisting of a novolak type phenolic resin, a natural resin, a silicone resin, a hardening agent, a special phenolic resin made by polymerizing dimethoxyparaxylene and phenol, and an inorganic filler. Since it is kneaded with an organic solvent, there is little decrease in adhesive strength due to thermal deterioration, and there is no risk of the cap falling off until the end of its life.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の管球用ベースセメントの一実
施例のガラス試験片による耐熱試験結果を示すグ
ラフ、第２図は同じく熱流動性を示すグラフ、第
３図は同じく電球による耐熱試験結果を示すグラ
フ、第４図は同じく電球による寿命試験結果を示
すグラフである。 Figure 1 is a graph showing the results of a heat resistance test using a glass test piece of an example of the base cement for bulbs of the present invention, Figure 2 is a graph showing the thermal fluidity of the same, and Figure 3 is the result of a heat resistance test using a light bulb. FIG. 4 is a graph showing the results of a life test using a light bulb.

Claims (1)

【特許請求の範囲】[Claims] １ ノボラツク形フエノール樹脂、天然樹脂、け
い素樹脂、硬化剤、ジメトキシパラキシレンとフ
エノールとを重合してなる特殊フエノール樹脂お
よび無機充填材からなるセメント素材を有機溶剤
で混練したことを特徴とする管球用ベースセメン
ト。1. A tube characterized in that a cement material consisting of a novolak type phenolic resin, a natural resin, a silicone resin, a curing agent, a special phenolic resin obtained by polymerizing dimethoxyparaxylene and phenol, and an inorganic filler is kneaded with an organic solvent. Base cement for balls.
JP19440281A 1981-12-04 1981-12-04 Base cement for bulb Granted JPS5899144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19440281A JPS5899144A (en) 1981-12-04 1981-12-04 Base cement for bulb

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19440281A JPS5899144A (en) 1981-12-04 1981-12-04 Base cement for bulb

Publications (2)

Publication Number Publication Date
JPS5899144A JPS5899144A (en) 1983-06-13
JPH0321493B2 true JPH0321493B2 (en) 1991-03-22

Family

ID=16324000

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19440281A Granted JPS5899144A (en) 1981-12-04 1981-12-04 Base cement for bulb

Country Status (1)

Country Link
JP (1) JPS5899144A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5530040A (en) * 1995-04-14 1996-06-25 Ross; Donald B. Traction composition for rubber

Also Published As

Publication number Publication date
JPS5899144A (en) 1983-06-13

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