{"id":306012,"date":"2024-10-19T20:57:28","date_gmt":"2024-10-19T20:57:28","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-33872020\/"},"modified":"2024-10-25T18:32:39","modified_gmt":"2024-10-25T18:32:39","slug":"bs-iso-33872020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-33872020\/","title":{"rendered":"BS ISO 3387:2020"},"content":{"rendered":"

This document specifies a test based on hardness measurements for determining the progressive stiffening of rubber with time, caused by crystallization. It is limited to materials having an initial hardness at a test temperature of from 10 IRHD to 85 IRHD.<\/p>\n

The method is applicable to raw, unvulcanized (compounded) and vulcanized rubber. It is mainly of interest for rubber with a marked crystallization tendency at temperatures experienced in cold climates, such as chloroprene and natural rubber.<\/p>\n

The method is not applicable to fast-crystallizing materials which crystallize to a considerable degree within the timespan of 15 min used for conditioning at test temperature.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
7<\/td>\n1 Scope
2 Normative references
3 Terms and definitions
4 Principle <\/td>\n<\/tr>\n
8<\/td>\n5 Apparatus
6 Calibration
7 Test pieces
7.1 Dimensions <\/td>\n<\/tr>\n
9<\/td>\n7.2 Preparation
7.2.1 Vulcanized rubber
7.2.2 Raw and unvulcanized rubber
7.3 Conditioning
7.3.1 Time-interval between vulcanization and testing
7.3.2 Decrystallization and conditioning <\/td>\n<\/tr>\n
10<\/td>\n8 Temperature and duration of test
8.1 Temperature
8.2 Duration
9 Procedure
9.1 Hardness measurement <\/td>\n<\/tr>\n
11<\/td>\n9.2 Original hardness
9.3 Initial hardness at test temperature
9.4 Hardness increase due to crystallization
10 Expression of results <\/td>\n<\/tr>\n
13<\/td>\n11 Test report <\/td>\n<\/tr>\n
15<\/td>\nAnnex A (normative) Calibration schedule <\/td>\n<\/tr>\n
17<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Rubber. Determination of crystallization effects by hardness measurements<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2020<\/td>\n18<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":306016,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-306012","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/306012","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/306016"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=306012"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=306012"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=306012"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}