Corrosion Guide
39Pages

Chemical Rsistance Guide Resin Slection for Industrial Applications

2 Reliability in Tough Environments Over many years Dion® Vinyl Ester resins have shown good long term performance when used in GRP tanks and pipes as well as other structural parts made for the corrosion industry. Dion® Vinyl Ester resins are known for their excellent chemical resistance and high mechanical properties in corrosive environments. More specifi cally, these resins have shown excellent durability within the chemical and oil/ gas industries, as well as the pulp and paper sectors. The high resilience and water resistance of Dion® Vinyl Ester resins also makes them particularly...

CONTENT - InlrodixAion 4 F actofs Meeting Structural Performance S Rctnin Snlaclkxi and OoscnpUon 6-9 Po*yiw»- 480 Stries 6 Poyile' 680 Swios 6 Pofyite* 720 Sries Dion* 640 Sortes 6 Dion* 250 Sorte 6 Dion' 6634 8 Dion* 9100 8 Dion* 9102 8 Dion* 91 GO IMPACT 8 0Wn*FR9300 8 CWf 9400 [>cn* 9 Dion* 9700 9 LJwn IMHAC 1 tr-IO Surface Veils 10 Adcttrvo 11 L amirvne Construction 11 SoconrJary BonoVig 12 Rosm Currng Systems 12-13 Post-Curing 14 Lamlnato Quality Control 15 Selected Apptcatkxi Rpccmrmrxlabons 16-19 Stauc Elecirteity 16 At* jitrvi) KfalarijiK 16 Potable Water and Food Applcaions 17...

Introduction The chemical resistance and performance of Polylite® and Dion® resins has been demonstrated over the past 45 years through the successful use of a variety of composite products in hundreds of different chemical environments. Practical experience has been supplemented by systematic evaluation of composites exposed to a large number of chemical environments under controlled laboratory conditions. The diverse corrosive properties of industrial chemicals require that a number of resin formulations be employed to optimize the performance of composite materials. Basic resin types...

Factors Affecting Structural Performance Thoro aro sovoral factors affecting tho performance of a structure exposed to a Chemical environrnenl, il is csscntial that ail relevant parameters are induded in the survey, in ordcr lo oblain the service requirements specrfled. The tuncton of internai and oxlcmal operating conditions, rnechanical loads, design, installation etc. are esscntial factors to avoid oquipmont failure In the anticipated service conditions, Ono of tho most common causes of structural falluro Is exposure to service conditions that are more severe than anticipated. wcM...

Resin Selection and Description 6 This chemical resistance guide lists a range of resin types to allow the appropriate selection for a given exposure. The anticipated performance limits relating to the type and concentration of chemical and the maximum operating temperature are tabulated for each type of resin. . Polylite® 480 Series is a high quality, medium reactive orthophthalic resin system with good mechanical properties. This resin is formulated to exhibit good hydrolytic stability and is resistant to neutral and acidic salts and weak nonoxidizing acids. The Polylite® 480-series is...

8 Dion® 6694 is a unique chemically modifi ed Bisphenol Fumarate resin that demonstrates excellent chemical resistance in a wide range of aggressive environments. This premium resin has been used with great success in chlorine environments, most notably in the pulp and paper industry for chlorine dioxide and sodium hypochlorite containment, and in caustic/ chlorine manufacture where it is used to produce chlorine cell covers. It also provides excellent resistance to highly acidic and extremely caustic environments. Dion® 9100 is a standard Bisphenol epoxy based Vinyl Ester resin and is the...

Resin Slection and Description Dion* 9500 is a rubber modifed epoxy Vinyl Ester resin with high tensile elongatlon and good impact r鮩sistance. In addition, this resin cflers many unique properties such as low shrinkage. low peak exotherm and especiaily good adhsion to glass. aramid and carbon fibres. PVC foam. steel and conaete. Thse properties comblned with excellent water r騩sistance and good chemical rsistance, make this Vinyl Ester resin well suited Tor structures exposed to dynarnic loads and for use as a primer. Dion* 9700 is a spcial Bisphend epoxy based Vinyl Ester resin that...

10 Reinforcement and Surface Veils Reinforcement The type of reinforcement used in a laminate will have an influence on both the short and long-term properties. Glass reinforcements are delivered with a variety of sizings and binders, and the glass itself can vary between suppliers. These differences can manifest themselves in the ease of wet out, chemical resistance and physical properties. The type and amount of reinforcement primarily guides the short term properties (e.g. mechanical and physical). According to the product specifications and requirements only reinforcements providing the...

Addltives and Laminate Construction Auditives Laminate Construction Any additive added to the resin could reduce Chemical rsistance, ThbcoVopic resin Systems have a tendency to marglnalty show reduced chemical rsistance, meaning that if operating conditions are very close to the limils stated in this guide, a non-thixotropic resin shoutd be used. This would also be valid for LSE resin Systems. Other Allers mixed Into the resin coutd be catastrophlc to the chemKal r驩sistance of the laminate, and should always be avoided. For spcial application processes, such as pultruskm. the use of the Low...

12 Secondary Bonding One of the most common locations for failure is at the secondary bond, for example where manholes and fittings are laminated to the main construction, and/ or where construction parts are laminated together. In such cases, the total construction is regarded as one integrated part, so if a failure in these areas occurs due to poor inter-laminar bonding, a total breakdown of the construction is likely to occur. To ensure a successful secondary bond, the composite substrate must either have a tacky, air-inhibited surface or it must be specially prepared. Composites with a...