[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-672705-105":59,"doc-detail-672705-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","processing-aids-vpa-fluoroelastomers-technical-information","Processing Aids - VPA Fluoroelastomers Technical Information","","General-purpose processing aids for Viton™ fluoroelastomers: VPA No. 1 improves preform smoothness, provides effective mill/mold release, and shows minimal impact on vulcanizate properties while slightly activating cure at 177 °C. VPA No. 2 serves as a particularly effective extrusion aid for faster, cooler, smoother extrusion, with little effect on curing or stress/strain but adverse influence on high-temperature compression set. VPA No. 3 offers best mold release, increases cure rate for bisphenol-cured systems, and is hygroscopic, requiring moisture control, with guidance on storage and handling precautions.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/processing-aids-vpa-fluoroelastomers-technical-information/672705/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/processing-aids-vpa-fluoroelastomers-technical-information/672705.png","ImageObject",300,407,{"name":92,"@type":93},"mieayamfan","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-04","2026-11-02",true,{"@type":102,"interactionType":103,"userInteractionCount":81},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What are the main benefits of VPA No. 1 for Viton™ molded goods?","Question",{"text":112,"@type":113},"VPA No. 1 provides smooth preforms and excellent mill and mold release characteristics. It offers slightly faster cure rates and has little or no effect on vulcanizate properties.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does VPA No. 2 improve extrusion of Viton™ compounds?",{"text":117,"@type":113},"VPA No. 2 enables Viton™ compounds to extrude faster, cooler, and smoother, producing generally smooth and glossy extrudates. Proper extrusion temperatures are emphasized to prevent stock slippage.",{"name":119,"@type":110,"acceptedAnswer":120},"What handling and formulation cautions apply to VPA No. 3?",{"text":121,"@type":113},"VPA No. 3 is hygroscopic, so exposure to water or high humidity can cause loss of compound scorch safety. It also has effects related to cure rate and safety for bisphenol-cured systems.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},672705,1793605708,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":81,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":34,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":129,"read_time":143},962090893677,"https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","Processing Aids  \nFluoroelastomers  \nTechnical Information  \nIntroduction  \nVPA No. 1 is a general-purpose processing aid useful in all types of molded goods made from Viton™ . It provides smooth preforms, slightly faster cure rates, and excellent mill and mold release characteristics. It has little or no effect on vulcanizate properties.  \nVPA No. 2 is a particularly effective extrusion aid allowing compounds of Viton™ to extrude faster, cooler, and smoother. It has some adverse effect on high temperature compression set.  \nVPA No. 3 provides the best mold [release. lt](release. lt) has little or no effect on standard physical properties, including compression set resistance, and increases the cure rate of bisphenol-cured systems. VPA No. 3 is best suited for molding operations with automatic part removal and tight compression set resistance requirements.  \nApplications  \nThe VPA processing aids are recommended for use in Viton™ for the following applications: O-rings, seals, molded shapes, diaphragms, and tubing. The comparative advantages of this family of processing aids in different operations are shown in Table 1.  \nHandling Precautions  \nVPA No. 1 and VPA No. 3 can cause eye and skin irritation. Avoid contact with eyes, skin, and clothing and avoid breathing dust. Use with adequate ventilation and wash thoroughly after handling. In case of eye contact, immediately flush eyes with plenty of water for at least 15 min and call a physician.  \nVPA No. 2 has no known toxicological hazards. Keep all containers closed to avoid contamination. Store in a cool, dry place.  \nBefore compounding or processing Viton™ fluoroelastomers, read Chemours technical bulletin “Handling Precautions for Viton™ and Related Chemicals.”  \nProduct Descriptions  \n\n|  | VPA No. 1 | VPA No. 2 | VPA No. 3 |\n| --- | --- | --- | --- |\n| Physical Form | Powder | Flake | Pellet |\n| Color | Light tan to\u003Cbr>white | Yellow | Tan to light\u003Cbr>brown |\n| Composition | Wax/\u003Cbr>aromatic sulfur\u003Cbr>compound | Vegetable\u003Cbr>wax | 75% sulfur\u003Cbr>compound on\u003Cbr>inert carrier |\n| Specific Gravity | 1.26 | 0.99 | 1.43 |\n| Melting Point,°C (°F) | 150 (302) | 80 (176) | — |\n| Recommended Level, phr | 0.5–2 | 0.5–2 | 0.5–1.5 |\n\nTable 1. Comparison of Process Aids in Viton™  \n\n|  | Mold Release | Mill Calender Release | Extrusion Smoothness | Compression Set Resistance |\n| --- | --- | --- | --- | --- |\n| VPA No. 1 | o/+ | + | o/+ | o/– |\n| VPA No. 2 | + | ++ | ++ | – |\n| VPA No. 3 | ++ | o | o | o |\n\n++ Very positive effect + Positive effect o No effect – Negative effect  \nProduct Descriptions  \nVPA No. 1  \nVPA No. 1 is recommended for all types of molded goods made from Viton™ . It is an effective mill release agent and is particularly useful on mills with inadequate cooling facilities. It can be premixed with other compounding ingredients and added to the batch. It has little or no effect on processing safety, but has a slight activating effect on cure rates at 177 °C (351 °F) . Rod-type preforms from compounds containing VPA No. 1 are smooth and uniform.  \nNote: Complicated extrusion profiles from compounds containing VPA No. 1 are not quite as smooth as those obtained with VPA No. 2.  \nA slight bloom will be noted on preforms and press-cured articles containing VPA No. 1, which disappears during the oven post-cure.  \nVPA No. 1 has no effect on original or heat-aged stress/strain properties and only a minor effect on high temperature compression set. Two parts of VPA No. 1 ina standard formulation with Viton™ E-60C will increase shrinkage approximately 0. 4% after an oven post-cure of 24 hr at 232 °C (450 °F) .  \nVPA No. 2  \nVPA No. 2 is recommended as an extrusion aid for a variety of extruded goods, such as tubing and complex profiles. It can be premixed with other compounding  \ningredients and added to the batch. As with all wax-type processing aids, proper extruder temperatures are very important. A cool screw and barrel in the feed section of the extruder are particularl","cbCaifwtScewdpgy","https://ap.wps.com/l/cbCaifwtScewdpgy","pdf",74139,"English","# Introduction\n# Applications\n# Handling Precautions\n# Product Descriptions\n## VPA No. 1\n## VPA No. 2\n## VPA No. 3\n## Comparison Tables","[{\"question\":\"What are the main benefits of VPA No. 1 for Viton™ molded goods?\",\"answer\":\"VPA No. 1 provides smooth preforms and excellent mill and mold release characteristics. It offers slightly faster cure rates and has little or no effect on vulcanizate properties.\"},{\"question\":\"How does VPA No. 2 improve extrusion of Viton™ compounds?\",\"answer\":\"VPA No. 2 enables Viton™ compounds to extrude faster, cooler, and smoother, producing generally smooth and glossy extrudates. Proper extrusion temperatures are emphasized to prevent stock slippage.\"},{\"question\":\"What handling and formulation cautions apply to VPA No. 3?\",\"answer\":\"VPA No. 3 is hygroscopic, so exposure to water or high humidity can cause loss of compound scorch safety. It also has effects related to cure rate and safety for bisphenol-cured systems.\"}]","Processing Aids - VPA Fluoroelastomers Technical Information | PDF",18]