Pub Date : 1998-01-01DOI: 10.1179/000705998798115443
J. Carter
Signalling systems on London Underground date from the 1940s onwards and consequently a wide range of polymeric insulated wire and cable is present. The investigations reported centre on the chlorinated diene rubber insulation surrounded by a lacquered glass braid used on earlier vital signalling equipment. The main degradation processes affecting the insulation are described and it is concluded that temperature is a critical factor; chloride salts formed on the surface of the conductor by reaction with chlorine released from the insulation also have a deleterious effect. The results of accelerated aging tests at 100°C are presented. These have been combined with observations of degradation in service in an Arrhenius type analysis that permits the lifetime of insulation in given time-temperature conditions to be estimated.
{"title":"Railway signal wire insulation investigations and monitoring of degradation undertaken by London Underground","authors":"J. Carter","doi":"10.1179/000705998798115443","DOIUrl":"https://doi.org/10.1179/000705998798115443","url":null,"abstract":"Signalling systems on London Underground date from the 1940s onwards and consequently a wide range of polymeric insulated wire and cable is present. The investigations reported centre on the chlorinated diene rubber insulation surrounded by a lacquered glass braid used on earlier vital signalling equipment. The main degradation processes affecting the insulation are described and it is concluded that temperature is a critical factor; chloride salts formed on the surface of the conductor by reaction with chlorine released from the insulation also have a deleterious effect. The results of accelerated aging tests at 100°C are presented. These have been combined with observations of degradation in service in an Arrhenius type analysis that permits the lifetime of insulation in given time-temperature conditions to be estimated.","PeriodicalId":20229,"journal":{"name":"Plastics, Rubber and Composites Processing and Applications","volume":"87 1","pages":"132-138"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86375027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-01-01DOI: 10.1002/9783527809080.cataz15553
P. Galli
The most recent studies in polyolefins research have shown that the keyrole of catalyis is to obtain resins having both new structures and morphological shapes that can be made directly in the reactor, excluding final extrusion and pelletization operations. This unique technology enables the manufacturer to produce more versatile and more economic materials both in the sysnthesis and in the processing phases
{"title":"Spherilene process","authors":"P. Galli","doi":"10.1002/9783527809080.cataz15553","DOIUrl":"https://doi.org/10.1002/9783527809080.cataz15553","url":null,"abstract":"The most recent studies in polyolefins research have shown that the keyrole of catalyis is to obtain resins having both new structures and morphological shapes that can be made directly in the reactor, excluding final extrusion and pelletization operations. This unique technology enables the manufacturer to produce more versatile and more economic materials both in the sysnthesis and in the processing phases","PeriodicalId":20229,"journal":{"name":"Plastics, Rubber and Composites Processing and Applications","volume":"73 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78985352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1991-01-01DOI: 10.1016/s0026-0576(97)81950-2
G. Turner
{"title":"Painting of plastics","authors":"G. Turner","doi":"10.1016/s0026-0576(97)81950-2","DOIUrl":"https://doi.org/10.1016/s0026-0576(97)81950-2","url":null,"abstract":"","PeriodicalId":20229,"journal":{"name":"Plastics, Rubber and Composites Processing and Applications","volume":"54 1","pages":"189-191"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90117922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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