WO2020098318A1 - 一种预铺反粘防水卷材的电磁焊接方法 - Google Patents

一种预铺反粘防水卷材的电磁焊接方法 Download PDF

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WO2020098318A1
WO2020098318A1 PCT/CN2019/099459 CN2019099459W WO2020098318A1 WO 2020098318 A1 WO2020098318 A1 WO 2020098318A1 CN 2019099459 W CN2019099459 W CN 2019099459W WO 2020098318 A1 WO2020098318 A1 WO 2020098318A1
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coiled material
waterproof coiled
electromagnetic welding
welding method
gasket
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PCT/CN2019/099459
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English (en)
French (fr)
Inventor
陈斌
李伟
黄亮
邓居兵
姚壮志
李俊
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江苏凯伦建材股份有限公司
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Publication of WO2020098318A1 publication Critical patent/WO2020098318A1/zh

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    • 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
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Definitions

  • the invention belongs to the field of pre-paved anti-adhesive waterproof coiled materials, in particular to an electromagnetic welding method of pre-paved anti-adhesive waterproof coiled materials.
  • the existing pre-paved anti-adhesive coiled material facade fixing method is to directly nail the surface of the coiled material.
  • the steel nail penetrates the main body of the coiled material, which will cause a large leakage risk to the waterproof layer in the later period, which is not conducive to the higher requirements for waterproof Construction environment.
  • the operator has heated the back surface of the pre-laid anti-adhesive coil by hand-held hot air welding and the contact surface of the ordinary PE or PP gasket, and the heating temperature (350 ° C) reaches both the coil and the gasket.
  • the actual operation is difficult and the plastic temperature range is narrow, so it has extremely high requirements on the fluctuation range of the welding gun temperature, it is difficult to control, the labor consumption is high, the construction efficiency is low, which is not conducive to the requirements of rapid construction.
  • the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, and to provide an electromagnetic welding method of pre-laid anti-adhesive waterproof coiled material, which can quickly fix the pre-laid waterproof coiled material on the substrate, the operation is simple, The controllability is good, and the welding is firm, which does not affect the appearance. At the same time, it also avoids the problem of late leakage caused by nailing and other methods in the prior art.
  • An electromagnetic welding method for pre-paved anti-stick waterproof coiled material includes a base material layer made of polyethylene, and the electromagnetic welding method includes the following steps:
  • a pre-welded gasket matched with the pre-paved waterproof membrane is fixed on the base, wherein the gasket is composed of a base resin layer and a metal wire embedded on the upper surface of the base resin layer ;
  • the raw materials of the matrix resin layer include: polyethylene 5-30%, polypropylene 5-30%, ethylene-propylene copolymer 20-50% and ethylene-octene copolymer 20-50 %,
  • the matrix resin layer is made by blending, melting and extruding the components in its raw material;
  • the pre-paved waterproof coiled material can be welded after starting.
  • the central portion of the base resin layer has a limit fixing portion recessed inward, and the center portion of the limit fixing portion has a screw perforation.
  • the upper surface of the base resin layer is an arc-shaped surface protruding outward.
  • a ring-shaped support positioning portion is formed on the lower surface of the base resin layer.
  • the substrate in step (1), includes a tunnel arch wall and a building side wall.
  • step (1) the gasket is fixed on the base body by screwing.
  • step (1) there are a plurality of the gaskets, the plurality of the gaskets are distributed at equal intervals and fixed on the base body, two of the plurality of the gaskets The shortest distance between them is 500-800mm or 1000-1500mm.
  • the raw materials of the matrix resin layer include: polyethylene 10-15%, polypropylene 15-20%, ethylene-propylene copolymer 40 -50% and ethylene-octene copolymer 25-35%.
  • the number average molecular weight of the polyethylene is 40,000 to 300,000.
  • the number average molecular weight of the polypropylene is 80,000 to 150,000.
  • the melt index of the ethylene-propylene copolymer is measured according to ASTM D1238 standard at 190 ° C. under a test load of 2.16 kg at 0.5-10 g / 10 min.
  • the melt index of the ethylene-octene copolymer is measured according to ASTM D1238 standard at 190 ° C. under a test load of 2.16 kg at 0.5-10 g / 10 min.
  • step (2) when the electromagnetic welding torch is pressed on the pre-paved waterproof roll where the gasket is located, the electromagnetic welding torch is applied to the pre-paved
  • the force on the waterproof membrane is 15-25N.
  • the electromagnetic welding method further includes the following steps before step (1):
  • the welding power of the electromagnetic welding gun is 75-85% of the maximum power. According to some specific and preferred aspects of the present invention, in step (2), the welding power of the electromagnetic welding gun is 78-82% of the maximum power.
  • the welding time of the electromagnetic welding gun is 0.5-3.0s. According to some specific and preferred aspects of the present invention, in step (2), the welding time of the electromagnetic welding gun is 1.0-1.5s.
  • the material of the metal wire is iron and / or copper.
  • the present invention has the following advantages compared with the prior art:
  • the invention only needs to align the electromagnetic welding torch to a specific position on the surface of the coil material, heat the metal wire by the magnetic field of the electromagnetic welding torch, and then melt the material of the contact surface of the gasket and the waterproof coil material by the heat from the metal wire, and then melt and fuse Together, to achieve the welding effect, and the electromagnetic welding method of the present invention has a low difficulty of operation, can save 1-2 manual labor compared with the ordinary welding process, the construction efficiency is high, the welding effect is reliable, and the late penetration caused by nailing in the prior art is avoided Leakage problem, at the same time, it can avoid excessive dependence on the temperature fluctuation of the welding gun, and the welding effect can be controlled.
  • FIG. 1 is a schematic view of the overall structure of the gasket used in the electromagnetic welding method of the pre-laid anti-adhesive waterproof coiled material of the present invention (upper surface perspective);
  • FIG. 2 is a schematic view of the overall structure of the gasket used in the electromagnetic welding method of the pre-laid anti-adhesive waterproof coiled material of the present invention (lower surface perspective);
  • FIG. 3 is a schematic cross-sectional view taken along line A-A in FIG. 2;
  • base resin layer 11, limit fixing part; 111, screw perforation; 12, blank part; 13, support positioning part; 14, protrusion; 2. metal wire.
  • polyethylene was purchased from: ExxonMobil 1018; polypropylene was purchased from: ExxonMobil 7032E2; ethylene-propylene copolymer was purchased from: ExxonMobil 3000; ethylene-octene copolymer was purchased from: Tao Chemical 2300; Electromagnetic welding gun was purchased from Kunshan Xinerde Machinery Technology Co., Ltd.
  • This embodiment provides an electromagnetic welding method for pre-laid anti-adhesive waterproof coiled material.
  • the pre-laid waterproof coiled material includes a base material layer made of polyethylene.
  • the electromagnetic welding method includes the following steps:
  • the pre-welded gasket matching the pre-paved waterproof coiled material is fixed on the tunnel arch wall by screws, wherein the gasket is composed of a base resin layer and inlaid on the upper surface of the base resin layer
  • the composition of the metal wire in terms of mass percentage, the raw materials of the matrix resin layer include: polyethylene 10%, polypropylene 15%, ethylene-propylene copolymer 50% and ethylene-octene copolymer 25%,
  • the matrix resin layer is made by blending, melting and extruding the components in its raw material;
  • the middle part of the base resin layer has a limit fixing part recessed inwards
  • the middle part of the limit fixing part has a screw perforation
  • a screw is screwed into the screw perforation and then the pre-welded and the pre-welded
  • the gaskets matching the waterproof coiled material are fixed on the arch wall of the tunnel;
  • the gaskets have a plurality of the gaskets distributed at equal intervals and fixed on the base body, and two of the plurality of gaskets The shortest distance between them is 600 ⁇ 5mm;
  • test the time and welding power required for the pre-paved waterproof membrane and the gasket to be welded to achieve a predetermined welding effect obtain the average value through multiple tests, and then use the average value as a step (2)
  • the working time and welding power benchmark of starting welding in the middle Specifically, the welding time is 1.2s and the welding power is 80% of the maximum power;
  • It includes a base resin layer 1, a metal wire 2, and the metal wire 2 is embedded on a portion of the upper surface of the base resin layer 1, and a limit fixing portion 11 recessed inward is provided in the middle of the upper surface of the base resin layer 1
  • a screw hole 111 penetrating the base resin layer 1 is formed in the middle of the bit fixing portion 11.
  • the metal wire 2 is embedded in the upper surface of the base resin layer 1 in a mesh shape, and at the same time, the metal wire 2 surrounds the limit fixing portion 11, and there is a gap between the portion inlaid with the metal wire 2 and the outer edge of the base resin layer 1 Part 12, the blank part 12 surrounds the part inlaid with the wire 2.
  • the material of the metal wire 2 may be iron or copper, and it only needs to realize the heating of the electromagnetic torch made by the principle of high-frequency induced electromagnetic welding to heat the metal wire 2, and then the heat from the metal wire 2 makes the gasket and The contact surfaces of the pre-paved waterproof coiled material are melted and fused together to achieve the welding effect, and the welding is firm, the difficulty of operation is low, the labor cost is saved compared with the ordinary welding process, and the construction efficiency is high.
  • a ring-shaped support positioning portion 13 is formed on the lower surface of the base resin layer 1.
  • the support positioning portion 13 can be used as a skeleton of the gasket to provide better support, and on the other hand, it can also save materials to a certain extent, and can also avoid the fixation caused by the thick flat bottom. Strong, easy to slip off.
  • the lower surface of the base resin layer 1 is further formed with a protrusion 14 opposite to the limit fixing portion 11, and the screw hole 111 passes through the protrusion 14, and the protrusion 14 is located in the support positioning portion 13.
  • the protrusion 14 can be used to fix the screw of the gasket with a longer guide and protect the outer wall, which is convenient for fixing the screw and can also enhance the firmness between the gasket and the base wall.
  • the upper end surface of the protrusion 14 is flat.
  • the height of the protrusion 14 is less than or equal to the height of the support positioning portion 13.
  • the cross-section of the base resin layer 1 is circular; the upper surface of the base resin layer 1 is an outwardly convex curved surface, which can be more conducive to bonding with the pre-laid waterproof membrane It is convenient for the subsequent electromagnetic welding torch to fuse the two together.
  • This embodiment provides an electromagnetic welding method for pre-laid anti-adhesive waterproof coiled material, which is basically the same as that in Embodiment 1, except that: in terms of mass percentage, the raw materials of the matrix resin layer include: polyethylene 10%, poly Propylene 20%, ethylene-propylene copolymer 40% and ethylene-octene copolymer 30%, welding time is 1.5s.
  • This embodiment provides an electromagnetic welding method for pre-laid anti-adhesive waterproof coiled material, which is basically the same as that in Embodiment 1, except that the raw materials of the matrix resin layer include: polyethylene 12%, poly Propylene 18%, ethylene-propylene copolymer 45% and ethylene-octene copolymer 25%, welding time is 1.2s.
  • Example 2 It is basically the same as Example 1, except that the raw material of the resin substrate layer is only polyethylene, and the welding time is 1.2 s.
  • Example 2 It is basically the same as Example 1, except that the raw material of the resin substrate layer is polyethylene 30%, hydrogenated styrene-butadiene block copolymer 70%, and the welding time is 1.2 s.

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  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
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Abstract

本发明公开了一种预铺反粘防水卷材的电磁焊接方法，预铺防水卷材包括以聚乙烯为材质的基材层，包括：1)将预焊接的与预铺防水卷材配套的垫片固定在基体上，垫片由基体树脂层和镶嵌在基体树脂层的上表面上的金属丝构成；以质量百分含量计，基体树脂层的原料包括：聚乙烯5-30％、聚丙烯5-30％、乙烯-丙烯共聚物20-50％和乙烯-辛烯共聚物20-50％；2)将预铺防水卷材铺设在基体上，使预铺防水卷材与垫片贴合，然后将电磁焊枪对准并压设在垫片所在位置的预铺防水卷材上，开机焊接，即可；本发明能够快速将预铺防水卷材固定在基体上，操作简单，可控性好，且焊接牢固，还避免了现有技术中打钉等方式固定而引起后期渗漏的问题。

Description

一种预铺反粘防水卷材的电磁焊接方法 技术领域
本发明属于预铺反粘防水卷材领域，具体涉及一种预铺反粘防水卷材的电磁焊接方法。
背景技术
现有预铺反粘卷材立面固定措施为直接在卷材表面打钉固定，然而钢钉穿破卷材主体，后期对防水层产生很大渗漏隐患，不利于对防水具有较高要求的施工环境。经过对施工工艺进一步改进，操作人员有通过手持热风焊接加热预铺反粘卷材的背面与普通PE或PP材质的垫片接触面，加热温度(350℃)到达卷材与垫片两者相容，但实际操作时难度高，可塑性温度范围狭窄，则对焊枪温度的波动幅度具有极高要求，难以控制，人工消耗高，施工效率低，不利于快速施工的要求。
发明内容
本发明所要解决的技术问题是为了克服现有技术的不足，提供一种预铺反粘防水卷材的电磁焊接方法，其能够实现快速将预铺防水卷材固定在基体上，操作简单，可控性好，且焊接牢固，还不影响美观，同时还避免了现有技术中打钉等方式固定而引起后期渗漏的问题。
为解决以上技术问题，本发明采取的技术方案如下：
一种预铺反粘防水卷材的电磁焊接方法，所述预铺防水卷材包括以聚乙烯为材质的基材层，所述电磁焊接方法包括如下步骤：
(1)将预焊接的与所述预铺防水卷材配套的垫片固定在基体上，其中，所述垫片由基体树脂层和镶嵌在所述基体树脂层的上表面上的金属丝构成；以质量百分含量计，所述基体树脂层的原料包括：聚乙烯5-30％、聚丙烯5-30％、乙烯-丙烯共聚物20-50％和乙烯-辛烯共聚物20-50％，所述基体树脂层由其原料中的各组分共混熔融、挤出而制成；
(2)将所述预铺防水卷材铺设在所述基体上，使所述预铺防水卷材与所述垫片贴合，然后将电磁焊枪对准并压设在所述垫片所在位置的所述预铺防水卷材上，开机焊接，即可。
根据本发明的一些优选方面，步骤(1)中，所述基体树脂层的中部具有 向内凹陷的限位固定部，所述限位固定部的中部具有螺钉穿孔。
根据本发明的一些优选方面，步骤(1)中，所述基体树脂层的所述上表面为向外凸出的弧形面。
根据本发明的一些优选方面，步骤(1)中，所述基体树脂层的下表面上形成有环型的支撑定位部。
根据本发明的一些优选方面，步骤(1)中，所述基体包括隧道拱墙、建筑侧墙。
根据本发明的一些优选方面，步骤(1)中，通过螺钉固定的方式将所述垫片固定在所述基体上。
根据本发明的一些优选方面，步骤(1)中，所述垫片具有多个，多个所述的垫片等间隔分布并固定在所述基体上，多个所述垫片中两两之间的最短距离为500-800mm或1000-1500mm。
根据本发明的一些优选方面，步骤(1)中，以质量百分含量计，所述基体树脂层的原料包括：聚乙烯10-15％、聚丙烯15-20％、乙烯-丙烯共聚物40-50％和乙烯-辛烯共聚物25-35％。
根据本发明，所述的聚乙烯的数均分子量为4-30万。
根据本发明，所述的聚丙烯的数均分子量为8-15万。
根据本发明，所述的乙烯-丙烯共聚物的熔融指数以ASTM D1238标准在190℃条件下按照测试载荷为2.16Kg时测定为0.5-10g/10min。
根据本发明，所述的乙烯-辛烯共聚物的熔融指数以ASTM D1238标准在190℃条件下按照测试载荷为2.16Kg时测定为0.5-10g/10min。
根据本发明的一些优选方面，步骤(2)中，当将所述电磁焊枪压设在所述垫片所在位置的所述预铺防水卷材上时，所述电磁焊枪施加在所述预铺防水卷材上的力为15-25N。
根据本发明的一些优选方面，所述电磁焊接方法还包括在步骤(1)之前的如下步骤：
测试需要被焊接的所述预铺防水卷材与所述垫片达到预定的焊接效果所需的时间以及焊接功率，多次测试求取平均值，进而将所述平均值作为步骤(2)中开机焊接的工作时间和焊接功率的基准。
根据本发明的一些优选方面，步骤(2)中，所述电磁焊枪的焊接功率为 最大功率的75-85％。根据本发明的一些具体且优选的方面，步骤(2)中，所述电磁焊枪的焊接功率为最大功率的78-82％。
根据本发明的一些优选方面，步骤(2)中，所述电磁焊枪的焊接时间为0.5-3.0s。根据本发明的一些具体且优选的方面，步骤(2)中，所述电磁焊枪的焊接时间为1.0-1.5s。
根据本发明的一些具体且优选的方面，所述金属丝的材质为铁和/或铜。
由于以上技术方案的采用，本发明与现有技术相比具有如下优点：
本发明仅需将电磁焊枪对准卷材表面的特定位置，通过电磁焊枪的磁场加热金属丝，再通过金属丝发出来的热量熔化垫片与防水卷材相接触面的材料，进而熔融融合在一起，从而达到焊接效果，而且本发明的电磁焊接方法操作难度低，相比普通焊接工艺能够节省1-2个人工，施工效率高，焊接效果牢靠，避免现有技术中打钉引起的后期渗漏问题，同时还可避免对焊枪温度波动幅度的过度依赖，焊接效果可控。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其它的附图。
图1为本发明预铺反粘防水卷材的电磁焊接方法中所采用的垫片的整体结构示意图(上表面视角)；
图2为本发明预铺反粘防水卷材的电磁焊接方法中所采用的垫片的整体结构示意图(下表面视角)；
图3为图2中A-A向的剖面示意图；
其中，1、基体树脂层；11、限位固定部；111、螺钉穿孔；12、空白部；13、支撑定位部；14、凸起；2、金属丝。
具体实施方式
以下结合具体实施例对上述方案做进一步说明；应理解，这些实施例是用于说明本发明的基本原理、主要特征和优点，而本发明不受以下实施例的范围限制；实施例中采用的实施条件可以根据具体要求做进一步调整，未注明的实 施条件通常为常规实验中的条件。
在以下实施例中，如无特别说明，所有原料均来自于商购或者通过本领域的常规方法制备而得。
下述中，聚乙烯购自：埃克森美孚1018；聚丙烯购自：埃克森美孚7032E2；乙烯-丙烯共聚物购自：埃克森美孚3000；乙烯-辛烯共聚物购自：陶氏化学2300；电磁焊枪购自昆山昕尔德机械科技有限公司。
实施例1
本实施例提供一种预铺反粘防水卷材的电磁焊接方法，所述预铺防水卷材包括以聚乙烯为材质的基材层，所述电磁焊接方法包括如下步骤：
(1)将预焊接的与所述预铺防水卷材配套的垫片通过螺钉固定在隧道拱墙上，其中，所述垫片由基体树脂层和镶嵌在所述基体树脂层的上表面上的金属丝构成；以质量百分含量计，所述基体树脂层的原料包括：聚乙烯10％、聚丙烯15％、乙烯-丙烯共聚物50％和乙烯-辛烯共聚物25％，所述基体树脂层由其原料中的各组分共混熔融、挤出而制成；
其中，所述基体树脂层的中部具有向内凹陷的限位固定部，所述限位固定部的中部具有螺钉穿孔，采用螺钉并钉入所述螺钉穿孔中进而将预焊接的与所述预铺防水卷材配套的垫片固定在隧道拱墙上；所述垫片具有多个，多个所述的垫片等间隔分布并固定在所述基体上，多个所述垫片中两两之间的最短距离为600±5mm；
(2)将所述预铺防水卷材铺设在所述基体上，使所述预铺防水卷材与所述垫片贴合，然后将电磁焊枪对准并压设(约施加20N的力)在所述垫片所在位置的所述预铺防水卷材上，开机焊接，即可；
本例中，测试需要被焊接的所述预铺防水卷材与所述垫片达到预定的焊接效果所需的时间以及焊接功率，多次测试求取平均值，进而将所述平均值作为步骤(2)中开机焊接的工作时间和焊接功率的基准。具体地，焊接时间为1.2s，焊接功率为最大功率的80％；
下面进一步说明本发明中所采用的特定垫片的结构，如图1-3所示，本例中的所述垫片的具体结构如下：
其包括基体树脂层1、金属丝2，金属丝2镶嵌在基体树脂层1的上表面中的部分上，基体树脂层1的上表面的中部开设有向内凹陷的限位固定部11，限位固定部11的中部形成有贯穿基体树脂层1的螺钉穿孔111。
本例中，金属丝2呈网状镶嵌在基体树脂层1的上表面，同时金属丝2环绕限位固定部11，镶嵌有金属丝2的部分与基体树脂层1的外沿之间具有空白部12，空白部12环绕镶嵌有金属丝2的部分。
具体地，金属丝2的材质可以为铁或铜，只需要实现通过高频诱导电磁焊接原理制成的电磁焊枪加热，使金属丝2发热，然后通过金属丝2发出来的热量使垫片与预铺防水卷材相接触面熔融融合进而相互结合在一起，从而达到焊接效果，且焊接牢固，操作难度低，比普通焊接工艺节省人力成本，施工效率高。
本例中，基体树脂层1的下表面上形成有环型的支撑定位部13。具体地，支撑定位部13一方面可以作为垫片的骨架，提供更好的支撑力，另一方面，还能在一定程度上实现节约材料，而且还可避免厚实的平实底部带来的固定不牢，易滑移脱落的情况。
本例中，基体树脂层1的下表面上还形成有与限位固定部11相对设置的凸起14，螺钉穿孔111穿过凸起14，凸起14位于支撑定位部13内。具体地，凸起14可以供固定垫片的螺钉具有更长的导向与保护外壁，方便固定螺钉的同时还能增强垫片与基体墙之间的牢固程度。
本例中，具体地，凸起14的上端面为平面。凸起14的高度小于等于支撑定位部13的高度。
本例中，具体地，基体树脂层1的横截面为圆形；基体树脂层1的上表面为向外凸出的弧形面，其能够更有利于与预铺防水卷材之间相贴合，进而方便后续电磁焊枪热熔结合两者。
性能测试：测得垫片与预铺防粘防水卷材之间的粘接剥离强度为5.12N/mm，接缝剪切强度12.27N/mm。
实施例2
本实施例提供一种预铺反粘防水卷材的电磁焊接方法，基本同实施例1，区别仅在于：以质量百分含量计，所述基体树脂层的原料包括：聚乙烯10％、聚丙烯20％、乙烯-丙烯共聚物40％和乙烯-辛烯共聚物30％，焊接时间为1.5s。
性能测试：测得垫片与预铺防粘防水卷材之间的粘接强度为5.25N/mm，接缝剪切强度12.32N/mm。
实施例3
本实施例提供一种预铺反粘防水卷材的电磁焊接方法，基本同实施例1，区别仅在于：以质量百分含量计，所述基体树脂层的原料包括：聚乙烯12％、聚丙烯18％、乙烯-丙烯共聚物45％和乙烯-辛烯共聚物25％，焊接时间为1.2s。
性能测试：测得垫片与预铺防粘防水卷材之间的粘接强度为4.45N/mm，接缝剪切强度为11.64N/mm。
对比例1
基本同实施例1，其区别仅在于：所述树脂基材层的原料仅为聚乙烯，焊接时间为1.2s。
性能测试：测得垫片与预铺防粘防水卷材之间的粘接强度为2.32N/mm，接缝剪切强度为8.15N/mm。
对比例2
基本同实施例1，其区别仅在于：所述树脂基材层的原料为聚乙烯30％、氢化苯乙烯-丁二烯嵌段共聚物70％，焊接时间为1.2s。
性能测试：测得垫片与预铺防粘防水卷材之间的粘接强度为3.27N/mm，接缝剪切强度为9.28N/mm。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (12)

  1. 一种预铺反粘防水卷材的电磁焊接方法，所述预铺防水卷材包括以聚乙烯为材质的基材层，其特征在于，所述电磁焊接方法包括如下步骤：
    (1)将预焊接的与所述预铺防水卷材配套的垫片固定在基体上，其中，所述垫片由基体树脂层和镶嵌在所述基体树脂层的上表面上的金属丝构成；以质量百分含量计，所述基体树脂层的原料包括：聚乙烯5-30％、聚丙烯5-30％、乙烯-丙烯共聚物20-50％和乙烯-辛烯共聚物20-50％，所述基体树脂层由其原料中的各组分共混熔融、挤出而制成；
    (2)将所述预铺防水卷材铺设在所述基体上，使所述预铺防水卷材与所述垫片贴合，然后将电磁焊枪对准并压设在所述垫片所在位置的所述预铺防水卷材上，开机焊接，即可。
  2. 根据权利要求1所述的预铺反粘防水卷材的电磁焊接方法，其特征在于，步骤(1)中，所述基体树脂层的中部具有向内凹陷的限位固定部，所述限位固定部的中部具有螺钉穿孔。
  3. 根据权利要求1所述的预铺反粘防水卷材的电磁焊接方法，其特征在于，步骤(1)中，所述基体树脂层的所述上表面为向外凸出的弧形面。
  4. 根据权利要求1所述的预铺反粘防水卷材的电磁焊接方法，其特征在于，步骤(1)中，所述基体树脂层的下表面上形成有环型的支撑定位部。
  5. 根据权利要求1所述的预铺反粘防水卷材的电磁焊接方法，其特征在于，步骤(1)中，所述基体包括隧道拱墙、建筑侧墙。
  6. 根据权利要求1所述的预铺反粘防水卷材的电磁焊接方法，其特征在于，步骤(1)中，通过螺钉固定的方式将所述垫片固定在所述基体上。
  7. 根据权利要求1所述的预铺反粘防水卷材的电磁焊接方法，其特征在于，步骤(1)中，所述垫片具有多个，多个所述的垫片等间隔分布并固定在所述基体上，多个所述垫片中两两之间的最短距离为500-800mm或1000-1500mm。
  8. 根据权利要求1所述的预铺反粘防水卷材的电磁焊接方法，其特征在于，步骤(1)中，以质量百分含量计，所述基体树脂层的原料包括：聚乙烯10-15％、聚丙烯15-20％、乙烯-丙烯共聚物40-50％和乙烯-辛烯共聚物25-35％。
  9. 根据权利要求1所述的预铺反粘防水卷材的电磁焊接方法，其特征在于，步骤(2)中，当将所述电磁焊枪压设在所述垫片所在位置的所述预铺防水卷材上时，所述电磁焊枪施加在所述预铺防水卷材上的力为15-25N。
  10. 根据权利要求1所述的预铺反粘防水卷材的电磁焊接方法，其特征在于，所述电磁焊接方法还包括在步骤(1)之前的如下步骤：
    测试需要被焊接的所述预铺防水卷材与所述垫片达到预定的焊接效果所需的时间以及焊接功率，多次测试求取平均值，进而将所述平均值作为步骤(2)中开机焊接的工作时间和焊接功率的基准。
  11. 根据权利要求1或10所述的预铺反粘防水卷材的电磁焊接方法，其特征在于，步骤(2)中，所述电磁焊枪的焊接功率为最大功率的75-85％。
  12. 根据权利要求1或10所述的预铺反粘防水卷材的电磁焊接方法，其特征在于，步骤(2)中，所述电磁焊枪的焊接时间为0.5-3.0s。
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