CORROSION, PROBLEMS IN CONJUNCTION WITH PVC-BASED COATINGS ON UNDERBODIES OF VEHICLES

Lately, problems have been noticed in conjunction with pvc-based coatings on underbodies of vehicles. The coating is sometimes said to have loosened from big areas of the underbody. In other cases corrosion damage has been found between the pvc coating and the sheet. The extent of such damage is, however, unknown. There is also uncertainty today as to how damaged underbody protection of pvc type should be repaired. The possible effects of anti-rust agents and other chemicals sed in car maintenance have also been discussed. For these reasons the Swedish Corrosion Institute started an inestigation in the autumn of 1978 with the main aim to estimate the extent of corrosion problems in conjunction with pvc-based coatings and, by means of a questionnaire, to find out on which car models such coatings are used and what recommendations have been issued for repair of damaged coatings and for supplementary anti-rust treatments and other car maintenance. The answers to the questionnaire indicate that pvc-based underbody coatings are used by the majority of car manufacturers. More or less detailed recommendations and instructions for anti-rust treatment, repair etc., resulting from the use of pvc-based coatings have been issued by some manufacturers in order, among other things, to ensure compatibility between factory rust protection and supplementary anti-rust treatment and also as instruction for retail dealers and repair shops. Most recommendations, however, are rather brief and general. (TRRL)

• Corporate Authors:

  Korrosionsinstitutet

  Box 43037
  Stockholm,   Sweden 
• Authors:
  • Molander, A
• Publication Date: 1981

Media Info

• Features: Appendices; Photos; Tables;
• Pagination: 18 p.

Subject/Index Terms

• TRT Terms: Coatings; Corrosion; Corrosion protection; Maintenance; Motor vehicle bodies; Polyvinyl chloride; Prevention; Questionnaires; Repairing
• Uncontrolled Terms: Repairs
• Old TRIS Terms: Automobile bodies
• ITRD Terms: 1356: Body (car); 3612: Coating; 5252: Corrosion; 9147: Interview; 3847: Maintenance; 7420: Polyvinylchloride; 9149: Prevention; 3635: Repair
• Subject Areas: Highways; Maintenance and Preservation; Security and Emergencies; Vehicles and Equipment; I94: Vehicle Corrosion;

Filing Info

• Accession Number: 00367033
• Record Type: Publication
• Source Agency: Swedish National Road and Transport Research Institute (VTI)
• Report/Paper Numbers: N1981:1E Monograph
• Files: ITRD, TRIS
• Created Date: Oct 30 1982 12:00AM