JPS622975B2 - - Google Patents

Info

Publication number
JPS622975B2
JPS622975B2 JP57093749A JP9374982A JPS622975B2 JP S622975 B2 JPS622975 B2 JP S622975B2 JP 57093749 A JP57093749 A JP 57093749A JP 9374982 A JP9374982 A JP 9374982A JP S622975 B2 JPS622975 B2 JP S622975B2
Authority
JP
Japan
Prior art keywords
adhesive
pipe
water
polyolefin
polyethylene
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
JP57093749A
Other languages
Japanese (ja)
Other versions
JPS58209525A (en
Inventor
Chiaki Momose
Kyoshi Nakakawara
Kazunori Terasaki
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.)
Mitsubishi Cable Industries Ltd
Original Assignee
Mitsubishi Cable Industries Ltd
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 Mitsubishi Cable Industries Ltd filed Critical Mitsubishi Cable Industries Ltd
Priority to JP57093749A priority Critical patent/JPS58209525A/en
Priority to NO824291A priority patent/NO824291L/en
Priority to EP82111901A priority patent/EP0083780B1/en
Priority to CA000418389A priority patent/CA1215528A/en
Priority to NZ202887A priority patent/NZ202887A/en
Priority to DE8282111901T priority patent/DE3266251D1/en
Priority to AT82111901T priority patent/ATE15494T1/en
Priority to FI824417A priority patent/FI73718C/en
Priority to KR8205803A priority patent/KR890002644B1/en
Priority to DK576382A priority patent/DK576382A/en
Priority to TR21644A priority patent/TR21644A/en
Publication of JPS58209525A publication Critical patent/JPS58209525A/en
Priority to US06/781,318 priority patent/US4726869A/en
Publication of JPS622975B2 publication Critical patent/JPS622975B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/12—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B29C65/484—Moisture curing adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7375—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73755—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being fully cured, i.e. fully cross-linked, fully vulcanized
    • B29C66/73756—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being fully cured, i.e. fully cross-linked, fully vulcanized the to-be-joined areas of both parts to be joined being fully cured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91931—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
    • B29C66/91933—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined higher than said fusion temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/041—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To permit the connection having a high connecting strength and a high connecting stability by a method whrein the pipe and a coupling therefor are connected after the connecting surfaces thereof are heated to a specified temperature or higher and, thereafter, an adhesive is coated on the surfaces in case they are connected by utilizing polyethylene siries adhesives. CONSTITUTION:In case the pipe of polyolefin and the coupling of synthetic resin are connected by utilizing the adhesive of polyethylene series, the connecting surfaces of the pipe and the coupling are heated to a temperature 50 deg.C higher than the melting point of the adhesive and the adhesive is coated thereon to connect them. When the pipe and the coupling are formed by a water crosslinkable polyolefin, the adhesive of polyethylene series is preferable to be made of the water crosslinkable polyethylene.

Description

【発明の詳細な説明】 本発明は、ポリオレフインパイプと合成樹脂製
継手との水架橋型ポリエチレン系接着剤を用いる
接合をきわめて安定に行なうことができるよう
に、接合前にパイプおよび継手を加熱処理するこ
とを特徴とする接合法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides extremely stable bonding between polyolefin pipes and synthetic resin fittings using a water-crosslinkable polyethylene adhesive. The present invention relates to a joining method characterized by:

ポリエチレン系接着剤を用いるポリオレフイン
パイプと合成樹脂製継手との接合においては、パ
イプおよび継手の接合部表面の一方または両方に
溶融したポリエチレン系接着剤が存在する状態に
もたらし、パイプを継手に挿入する方法がとられ
ているが、野外などの現場での作業が多いことか
ら手早く能率よく作業をしなければならず、した
がつて従来、挿入直前における接着剤および前記
パイプと継手の接合部表面の温度は、接着剤の融
点よりわずかに高い程度の温度にもたらされるに
すぎない。 When joining a polyolefin pipe and a synthetic resin fitting using a polyethylene adhesive, bring the molten polyethylene adhesive to one or both of the joint surfaces of the pipe and the fitting, and then insert the pipe into the fitting. However, because the work is often carried out outdoors or on-site, the work must be done quickly and efficiently. The temperature is brought to only slightly above the melting point of the adhesive.

しかしながら、この方法では接合前の接着剤と
ポリオレフインパイプおよび合成樹脂製継手との
接着状態がわるく、このため接着強度の安定性が
充分でない。 However, in this method, the adhesive state between the adhesive and the polyolefin pipe and the synthetic resin joint before joining is poor, and therefore the stability of the adhesive strength is not sufficient.

本発明者らは種々研究を重ねた結果、接合前に
ポリオレフインパイプおよび合成樹脂製継手の被
着界面をある温度以上に加熱するかしないかによ
り、接合の安定性および接合強度に大きな影響を
及ぼすことが見出され、それに基づき本発明を完
成した。 As a result of various studies, the inventors of the present invention have found that the stability and strength of the joint are significantly affected by whether or not the bonding interface of polyolefin pipes and synthetic resin joints is heated above a certain temperature before joining. Based on this discovery, the present invention was completed.

すなわち本発明の接合法は、ポリオレフインパ
イプと合成樹脂製継手との被着界面を接合前に少
なくとも（t1＋70）℃（t1は接着剤の主成分であ
る水架橋型ポリエチレンの融点）の温度に加熱保
持することを特徴とするものである。 In other words, the bonding method of the present invention requires that the adhesion interface between the polyolefin pipe and the synthetic resin joint be heated to at least (t 1 +70)°C (t 1 is the melting point of water-crosslinked polyethylene, which is the main component of the adhesive) before bonding. It is characterized by being heated and maintained at a certain temperature.

本発明における加熱処理は、パイプと継手との
接合前であれば接着剤の塗布の前後を問わない。
すなわち、接合前に少なくとも接着剤と被着材と
の界面および接着剤が前記の温度に達していれば
よい。 The heat treatment in the present invention may be performed before or after the adhesive is applied, as long as it is before the pipe and the joint are joined together.
That is, it is sufficient that at least the interface between the adhesive and the adherend and the adhesive reach the above temperature before joining.

加熱温度は使用する水架橋型ポリエチレン系接
着剤の主成分である水架橋型ポリエチレンの融点
（t1）プラス70℃以上である。好ましい加熱温度
は、該融点（t1）より70〜130℃高い温度である。
加熱温度が（t1＋70）℃未満のときは所望の接合
の安定性や強度がえられず、好ましくない。接合
前における前記温度での加熱保持時間は数秒ない
し数十秒で充分であるが、それ以上時間をかけて
もよい。 The heating temperature is the melting point (t 1 ) of water-crosslinked polyethylene, which is the main component of the water-crosslinked polyethylene adhesive used, plus 70°C or higher. A preferred heating temperature is 70 to 130°C higher than the melting point (t 1 ).
When the heating temperature is less than (t 1 +70)°C, the desired stability and strength of the bond cannot be obtained, which is not preferable. Several seconds to several tens of seconds is sufficient for heating and holding time at the above temperature before bonding, but it may take longer.

なお、本明細書におけるポリエチレン系接着剤
の主成分である水架橋型ポリエチレンの融点
（t1）は、「高分子分析ハンドブツク」神原編（昭
和40年）、朝倉書店の3.15.1節に記載されている
方法に準じて示差熱分析を行ない、えられた融解
ピークの温度のことをいう。 The melting point (t 1 ) of water-crosslinked polyethylene, which is the main component of the polyethylene adhesive in this specification, is described in Section 3.15.1 of "Polymer Analysis Handbook" edited by Kambara (1966), Asakura Shoten. This refers to the temperature of the melting peak obtained by performing differential thermal analysis according to the method described.

被着材の加熱はいかなる手段によつて行なつて
もよいが、野外でパイプを接合するばあい、熱
板、バーナ、トーチランプなどの加熱手段により
行なえばよい。 Heating of the adherend may be carried out by any means, but in the case of joining pipes outdoors, heating may be carried out by a heating means such as a hot plate, a burner, or a torch lamp.

本発明の方法により接合されうるポリオレフイ
ンパイプの材質としては、架橋済の、あるいは架
橋しない、もしくは経時架橋型のポリオレフイン
樹脂があげられ、それらのいずれも使用でき、ポ
リオレフイン樹脂としてはたとえばポリエチレ
ン、ポリプロピレン、エチレン−プロピレン共重
合体、エチレン−酢酸ビニル共重合体、エチレン
−アクリレート共重合体、ポリブテン−１などが
あげられる。それらのうち架橋ポリオレフイン樹
脂と経時架橋型ポリオレフイン樹脂が好ましく、
とくに水で架橋する水架橋性の経時架橋型のポリ
オレフイン樹脂が好ましい。水架橋型のポリオレ
フイン樹脂としては、前記ポリオレフインをビニ
ルトリメトキシシランなどの有機シラン化合物お
よびジクミルパーオキサイドなどの有機過酸化物
を用いてシランをグラフトしたものがあげられ
る。有機シラン化合物や有機過酸化物、えられる
シラングラフトポリオレフインとしては、たとえ
ば特開昭50−126789号公報、特公昭50−35940号
公報に記載されているものがあげられる。さらに
前記有機シラン化合物とα−オレフインとを共重
合し、主鎖にシラン基を導入したポリオレフイン
も用いることができ、かかる共重合体の例として
は特開昭56−88446号公報に記載されているもの
があげられる 合成樹脂製継手の材質としてはポリオレフイン
パイプに用いるものと同じものが好ましいが、そ
れらに限られるものではなく、ポリ塩化ビニルや
ポリエステルなどの他の合成樹脂やゴムなどを用
いてもよい。 The material of the polyolefin pipe that can be joined by the method of the present invention includes crosslinked, non-crosslinked, or time-crosslinked polyolefin resins, and any of these can be used. Examples of the polyolefin resin include polyethylene, polypropylene, Examples include ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylate copolymer, and polybutene-1. Among them, crosslinked polyolefin resins and time-crosslinked polyolefin resins are preferred;
In particular, a water-crosslinkable, time-crosslinkable polyolefin resin that crosslinks with water is preferred. Examples of water-crosslinked polyolefin resins include those obtained by grafting silane onto the polyolefin described above using an organic silane compound such as vinyltrimethoxysilane and an organic peroxide such as dicumyl peroxide. Examples of organic silane compounds, organic peroxides, and silane-grafted polyolefins that can be obtained include those described in JP-A-50-126789 and JP-B-50-35940. Furthermore, a polyolefin obtained by copolymerizing the above-mentioned organic silane compound and α-olefin and introducing a silane group into the main chain can also be used. The material for synthetic resin fittings is preferably the same as that used for polyolefin pipes, but it is not limited to these materials. Good too.

本発明の方法で用いる水架橋型ポリエチレン系
接着剤としては、主成分として前記水架橋型のポ
リエチレンをそのままあるいは他の成分と混合し
て、固形状や粉末状、フイルム状または溶液状、
ペースト状、乳化状、懸濁状にしたものが用いら
れる。予備加熱後の作業の容易さおよび作業能率
がよく、均一に塗布することができる点からみ
て、水によつて緩慢に架橋が進行する水架橋型ポ
リエチレンのペースト状のものが好ましい。 The water-crosslinked polyethylene adhesive used in the method of the present invention may contain the above-mentioned water-crosslinked polyethylene as the main component as it is or mixed with other components, and may be in the form of solid, powder, film, or solution.
Paste, emulsion, and suspension forms are used. From the viewpoint of ease of work after preheating, good work efficiency, and ability to apply uniformly, water-crosslinked polyethylene pastes that are slowly crosslinked with water are preferred.

本発明の方法によるときにはポリオレフインパ
イプと合成樹脂継手との接合強度が向上し、かつ
作業の安定性が向上する。このことは、本発明に
おける加熱処理を施したものでは、ポリエチレン
系接着剤と被着剤とがその界面においてよくなじ
むからであると考えられる。 When the method of the present invention is used, the joint strength between the polyolefin pipe and the synthetic resin joint is improved, and the stability of the work is improved. This is thought to be because the polyethylene adhesive and the adherend blend well at the interface in the heat-treated material of the present invention.

つぎに実施例をあげて本発明の接合法を説明す
る。 Next, the joining method of the present invention will be explained with reference to Examples.

実施例 １ ポリオレフインパイプとして密度0.95ｇ／cm3、
融点128℃の水架橋型ポリエチレンからなる外径
60mm、肉厚4.5mmのパイプを用い、合成樹脂製継
手として融点130℃、密度0.95ｇ／cm3の水架橋型
ポリエチレンからなる内径60mm、肉厚５mmの継手
を用いた。Example 1 Density 0.95g/cm 3 as polyolefin pipe,
Outer diameter made of water-crosslinked polyethylene with a melting point of 128℃
A pipe with a diameter of 60 mm and a wall thickness of 4.5 mm was used, and a synthetic resin joint with an inner diameter of 60 mm and a wall thickness of 5 mm made of water-crosslinked polyethylene with a melting point of 130° C. and a density of 0.95 g/cm 3 was used.

水架橋型ポリエチレン系接着剤としては、密度
0.92ｇ／cm3、メルトインデツクス2.5ｇ／10分お
よび融点120℃のリニアポリエチレン100部（重量
部、以下同様）とビニルトリメトキシシラン2.0
部とジクミルパーオキサイド0.1部とを混合、混
練し、グラフト重合を行なつてえられたシラング
ラフトポリエチレン（融点120℃）を５倍容のキ
シレンに溶解してえられた水架橋型ポリエチレン
系接着剤を用いた。 As a water-crosslinked polyethylene adhesive, the density
100 parts of linear polyethylene (parts by weight, the same applies hereinafter ) with a melt index of 2.5 g/10 minutes and a melting point of 120°C and 2.0 parts of vinyltrimethoxysilane.
A water-crosslinked polyethylene system obtained by dissolving silane-grafted polyethylene (melting point: 120°C) in 5 times the volume of xylene by mixing and kneading 0.1 part of dicumyl peroxide and 0.1 part of dicumyl peroxide, and performing graft polymerization. Glue was used.

加熱処理および接合は接合部分をウエスで清拭
したのち、パイプおよび継手をそれぞれ加熱する
ための雌型部および雄型部を有する熱板を250℃
に加熱し、この熱板にパイプおよび継手を挿入
し、２〜３秒間保持したのち引き抜き、直ちにあ
らかじめ約135℃に加熱流動化してある前記水架
橋型ポリエチレン系接着剤を接合部に塗布し、つ
いでパイプと継手を接合した。接着剤中のキシレ
ンは前記塗布直後にその大部分が揮散し、また接
合直前における水架橋型ポリエチレン系接着剤は
180℃に達していた。 For heat treatment and joining, after wiping the joint area with a rag, heat a hot plate with a female part and a male part to heat the pipe and fitting at 250℃.
, insert the pipe and joint into this hot plate, hold it for 2 to 3 seconds, then pull it out, and immediately apply the water-crosslinked polyethylene adhesive, which has been heated and fluidized to about 135°C in advance, to the joint, Next, the pipe and fitting were joined. Most of the xylene in the adhesive volatilizes immediately after the application, and the water-crosslinked polyethylene adhesive immediately before bonding
It had reached 180 degrees Celsius.

えられた接合物について、80℃、８気圧の温水
をパイプ内に満して170時間保持し、接合部から
の水漏れの有無を調べたところ、何らの異常もな
く、また割れなどの他の欠陥も生じていなかつ
た。 Regarding the resulting joint, we filled the pipe with hot water at 80℃ and 8 atm and held it there for 170 hours, and when we checked for water leakage from the joint, there were no abnormalities, such as cracks, etc. No defects occurred.

さらに９本の同様のパイプ、継手および接着剤
を用いて同様の接合を行ない、前記と同様の水漏
試験を行なつたところ、すべての接合物について
異常がなく、接合は100％成功していた。 When nine more similar pipes, fittings, and adhesives were used to make the same connections, and the same water leakage test as above was conducted, there were no abnormalities in any of the joined items, indicating that the connections were 100% successful. Ta.

比較例 １ 熱板の温度を150℃にしたほかは実施例１と同
様にして10本のパイプを継手と接合し、それぞれ
につき実施例１と同様の水漏試験を行なつたとこ
ろ、６本について１時間30分後に接合部から漏れ
が生じ、成功率は40％であつた。Comparative Example 1 Ten pipes were joined to a joint in the same manner as in Example 1 except that the temperature of the hot plate was set to 150°C, and a water leakage test was conducted on each of them in the same manner as in Example 1. The joint leaked after 1 hour and 30 minutes, and the success rate was 40%.

実施例 ２ 実施例１のパイプおよび継手を清拭したのち実
施例１と同じ水架橋型ポリエチレン系接着剤を接
合部に常温で塗布し、それらを240℃に加熱した
熱板に２〜３秒間挿入したのち引き抜き、直ちに
接合した。同様にして接合物を10本作製した。Example 2 After wiping down the pipe and fittings in Example 1, the same water-crosslinkable polyethylene adhesive as in Example 1 was applied to the joints at room temperature, and the adhesive was placed on a hot plate heated to 240°C for 2 to 3 seconds. After insertion, it was pulled out and immediately joined. Ten bonded products were produced in the same manner.

えられた10本の接合物について実施例１と同様
の水漏試験を行なつたところ、すべてのものにつ
いて異常は生じず、成功率は100％であつた。 When a water leakage test similar to that in Example 1 was conducted on the 10 joints obtained, no abnormality occurred in any of them, and the success rate was 100%.

実施例 ３ ポリオレフインパイプとして架橋ポリプロピレ
ンからなる外径60mm、肉厚4.5mmのパイプを用い
たほかは実施例１と同様にパイプと継手を接合し
て10本の接合物を作製した。Example 3 A pipe and a joint were joined together in the same manner as in Example 1, except that a pipe made of cross-linked polypropylene with an outer diameter of 60 mm and a wall thickness of 4.5 mm was used as the polyolefin pipe, to produce 10 joined products.

えられた10本の接合物について実施例１と同様
の水漏試験を行なつたところ、すべてのものにつ
いて異常は生じず、成功率は100％であつた。 When a water leakage test similar to that in Example 1 was conducted on the 10 joints obtained, no abnormality occurred in any of them, and the success rate was 100%.

実施例 ４ 水架橋型ポリエチレン系接着剤として実施例１
で用いたシラングラフトポリエチレン（融点120
℃）を８倍容のデカリンに溶解した接着剤を用
い、熱板の温度を260℃としたほかは実施例１と
同様にパイプと継手を接合して10本の接合物を作
製した。Example 4 Example 1 as a water-crosslinked polyethylene adhesive
Silane-grafted polyethylene (melting point 120
Ten joints were produced by joining pipes and fittings in the same manner as in Example 1, except that the temperature of the hot plate was 260°C using an adhesive prepared by dissolving 8 times the volume of Decalin (10 times the volume of decalin).

えられた10本の接合物について実施例１と同様
の水漏試験を行なつたところ、すべてのものにつ
いて異常は生じず、成功率は100％であつた。 A water leakage test similar to that in Example 1 was conducted on the 10 joints obtained, and no abnormality occurred in any of them, with a success rate of 100%.

比較例 ２ 熱板の温度を150℃にしたほかは実施例４と同
様にパイプと継手を接合して10本の接合物を作製
した。Comparative Example 2 Ten joints were produced by joining pipes and joints in the same manner as in Example 4, except that the temperature of the hot plate was 150°C.

えられた10本の接合物について実施例１と同様
の水漏試験を行なつたところ、８本が25分後に接
合部で漏れが生じた。成功率は20％であつた。 When a water leakage test similar to that in Example 1 was conducted on the 10 joints obtained, 8 joints leaked after 25 minutes. The success rate was 20%.

実施例 ５ 常温で水架橋型ポリエチレン系接着剤を塗布
し、ついで240℃の熱板で加熱処理し、再度接着
剤を塗布したほかは実施例１と同様にして10本の
接合物を作製した。Example 5 Ten bonded products were prepared in the same manner as in Example 1, except that a water-crosslinked polyethylene adhesive was applied at room temperature, then heat treated on a hot plate at 240°C, and the adhesive was applied again. .

えられた10本の接合物について実施例１と同様
の水漏試験を行なつたところ、すべてのものにつ
いて異常は生じず、成功率は100％であつた。 When a water leakage test similar to that in Example 1 was conducted on the 10 joints obtained, no abnormality occurred in any of them, and the success rate was 100%.

実施例 ６ 合成樹脂製継手としてポリプロピレン製の継手
を用いたほかは実施例１と同様にパイプと継手を
接合して10本の接合物を作製した。Example 6 Ten joints were produced by joining pipes and joints in the same manner as in Example 1, except that a polypropylene joint was used as the synthetic resin joint.

えられた10本の接合物について実施例１と同様
の水漏試験を行なつたところ、すべてのものに異
常は生じず、成功率は100％であつた。 A water leakage test similar to that in Example 1 was conducted on the 10 joints obtained, and no abnormality occurred in any of them, with a success rate of 100%.

実施例 ７ 合成樹脂製継手としてポリブテン−１製の継手
を用いたほかは実施例１と同様にパイプと継手を
接合して10本の接合物を作製した。Example 7 Ten joints were produced by joining pipes and joints in the same manner as in Example 1, except that a joint made of polybutene-1 was used as the synthetic resin joint.

えられた10本の接合物について実施例１と同様
の水漏試験を行なつたところ、すべてのものに異
常は生じず、成功率は100％であつた。 A water leakage test similar to that in Example 1 was conducted on the 10 joints obtained, and no abnormality occurred in any of them, with a success rate of 100%.

Claims (1)

【特許請求の範囲】 １ ポリオレフインパイプと合成樹脂製継手とを
水架橋型ポリエチレンを主成分とするポリエチレ
ン系接着剤を用いて接合するにあたり、ポリオレ
フインパイプおよび合成樹脂製継手の被着界面を
接合前に少なくとも（t1＋70）℃（ただし、t1は
該接着剤の主成分である水架橋型ポリエチレンの
融点である）の温度に加熱保持することを特徴と
するポリオレフインパイプの接合法。 ２ ポリオレフインパイプが水架橋型ポリエレフ
インパイプであり、かつ合成樹脂製継手が水架橋
型ポリオレフイン製の継手である特許請求の範囲
第１項記載の接合法。[Scope of Claims] 1. When joining a polyolefin-in pipe and a synthetic resin joint using a polyethylene adhesive mainly composed of water-crosslinked polyethylene, the adhering interface of the polyolefin pipe and the synthetic resin joint is bonded before joining. A method for joining polyolefin pipes, the method comprising heating and holding at a temperature of at least (t 1 +70)°C (where t 1 is the melting point of water-crosslinked polyethylene, which is the main component of the adhesive). 2. The joining method according to claim 1, wherein the polyolefin pipe is a water-crosslinked polyolefin pipe, and the synthetic resin joint is a water-crosslinkable polyolefin joint.
JP57093749A 1981-12-29 1982-05-31 Connection of polyolefin pipe Granted JPS58209525A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
JP57093749A JPS58209525A (en) 1982-05-31 1982-05-31 Connection of polyolefin pipe
NO824291A NO824291L (en) 1981-12-29 1982-12-20 ADHESIVE AND PROCEDURE FOR COMPOUNDING POLYOLEFINE OBJECTS BY USING THEREOF
FI824417A FI73718C (en) 1981-12-29 1982-12-22 FOERFARANDE FOER SAMMANFOGNING AV POLYOLEFINPRODUKTER.
CA000418389A CA1215528A (en) 1981-12-29 1982-12-22 Adhesive and method of jointing articles of polyolefin using the same
NZ202887A NZ202887A (en) 1981-12-29 1982-12-22 Polyolefin adhesive
DE8282111901T DE3266251D1 (en) 1981-12-29 1982-12-22 Adhesive and method of jointing articles of polyolefin using the same
AT82111901T ATE15494T1 (en) 1981-12-29 1982-12-22 ADHESIVES AND METHOD FOR BONDING POLYOLEFIN OBJECTS.
EP82111901A EP0083780B1 (en) 1981-12-29 1982-12-22 Adhesive and method of jointing articles of polyolefin using the same
KR8205803A KR890002644B1 (en) 1981-12-29 1982-12-24 Method of jointing articles of polyolefin
DK576382A DK576382A (en) 1981-12-29 1982-12-28 ADHESIVE AND PROCEDURE FOR JOINING POLYOLEFING STANDS USING THIS ADHESIVE
TR21644A TR21644A (en) 1981-12-29 1982-12-29 METHOD OF ADHESIVE SUBSTANCE AND SOES SUBJECT MATERIALS THAT CONNECT PRODUCTS FROM POLYOLEF BY USING BOEYLE ADHESIVE MATERIAL
US06/781,318 US4726869A (en) 1981-12-29 1985-09-30 Adhesive and method of jointing articles of polyolefin using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57093749A JPS58209525A (en) 1982-05-31 1982-05-31 Connection of polyolefin pipe

Publications (2)

Publication Number Publication Date
JPS58209525A JPS58209525A (en) 1983-12-06
JPS622975B2 true JPS622975B2 (en) 1987-01-22

Family

ID=14091067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57093749A Granted JPS58209525A (en) 1981-12-29 1982-05-31 Connection of polyolefin pipe

Country Status (1)

Country Link
JP (1) JPS58209525A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5276379A (en) * 1975-12-22 1977-06-27 Dainippon Ink & Chemicals Method of welding of formed product of thermoplastic resin with molten filamemt and tool for welding of filament
JPS52130872A (en) * 1976-04-27 1977-11-02 Neopane Kk Method of jointing of poyethylene * polypropylene pipes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5276379A (en) * 1975-12-22 1977-06-27 Dainippon Ink & Chemicals Method of welding of formed product of thermoplastic resin with molten filamemt and tool for welding of filament
JPS52130872A (en) * 1976-04-27 1977-11-02 Neopane Kk Method of jointing of poyethylene * polypropylene pipes

Also Published As

Publication number Publication date
JPS58209525A (en) 1983-12-06

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