JPS4999632A - |
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| 申请号 | JP439574 | 申请日 | 1973-12-28 | 公开(公告)号 | JPS4999632A | 公开(公告)日 | 1974-09-20 |
| 申请人 | 发明人 | ||||||
| 摘要 | 1453306 Jointing using synthetic resins PONT-A-MOUSSON SA 14 Dec 1973 [29 Dec 1972 26 Oct 1973] 58142/73 Heading B5A [Also in Divisions F2 and B3] Parts to be assembled are each applied with a layer of a slowly polymerizable and slightly exothermic resin which has good adhesion to the parts, and the space between the layers is filled with a rapidly polymerizable second resin which is sufficiently exothermic to promote polymerization of the first resin. The first resin may be an epoxy with an equal part of hardener, and the second resin 120 weight parts of polyester resin, 150 parts of granular filler, 2À4 parts of accelerator and 3À6 parts of catalyst. Alternative second resins are phenoplast or furanic catalysed with acids. As applied to joining iron-pipes T1, T2, Fig. 1, in which the pipe T1 has a tapered socket, after applying coatings 1, 2 of the first resin the male end is wound with glass fibre felt 3 and inserted against a rubber, plastics or lead stop 4 in the socket. The second resin is then injected into the felt in two streams meeting at the point of an injection nozzle, one stream comprising the resin and accelerator and the other the catalyst, or one stream comprising the resin and accelerator and the other the resin and catalyst. Alternatively, the felt may be pre-impregnated with one of the components of the resin, e.g. the catalyst, or instead of using felt the joint may be filled with granular material, e.g. sand, which is injected with the second resin. In another form, Fig. 2 (not shown), two metal plates are joined. Pre-stressing cables, foundation bolts or the shoe 11, Fig. 4, of a machine may be secured in concrete by the process. After applying the first resin 15, 16 the shoe is held in position as by jacks during deposition of the second resin 19 in a zone surrounded by a cardboard or plastics wall 17. In a further form, Fig. 5, cable sheaths 20, 21, conductors 22, 23 and connectors 24 are coated with the first resin, inserted in a divided mould 16 and encapsulated in the second resin. A flange 28, Fig. 8, is secured to a pipe 29 by applying the first resin 32, 33, covering it with a layer 34, 36 of the second resin, applying a winding of a plastics or glass-fibre tape 35 which is coated and impregnated with the second resin, assembling the flange and compressing the tape 35, e.g. by hammering. | ||||||
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