{"id":305909,"date":"2024-10-19T20:56:53","date_gmt":"2024-10-19T20:56:53","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-6721-42019\/"},"modified":"2024-10-25T18:31:56","modified_gmt":"2024-10-25T18:31:56","slug":"bs-iso-6721-42019","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-6721-42019\/","title":{"rendered":"BS ISO 6721-4:2019"},"content":{"rendered":"

This document describes a forced, non-resonance method for determining the components of the tensile complex modulus E<\/i>* of polymers at frequencies typically in the range 0,01 Hz to 100 Hz.<\/p>\n

\n
\n NOTE\n <\/div>\n

Higher frequency measurements can be made, but significant errors in the dynamic properties measured are likely to result (see  10.2.2<\/span> and 10.2.3<\/span>).<\/p>\n<\/p><\/div>\n

The method is suitable for measuring dynamic storage moduli in the range 0,01 GPa to 5 GPa. Although materials with moduli outside this range can be studied, alternative modes of deformation are intended to be used for higher accuracy [i.e. a shear mode for G?<\/i> < 0,01 GPa (see  ISO 6721-6<\/span><\/span>) and a flexural mode for E?<\/i> > 5 GPa (see  ISO 6721-3<\/span><\/span> or ISO 6721-5<\/span><\/span>)].<\/p>\n

This method is particularly suited to the measurement of loss factors and can therefore be conveniently used to study the variation of dynamic properties with temperature and frequency through most of the glass-rubber relaxation region (see  ISO 6721-1<\/span><\/span>). The availability of data determined over wide ranges of both frequency and temperature enables master plots to be derived, using frequency-temperature shift procedures, which display dynamic properties over an extended frequency range at different temperatures.<\/p>\n

PDF Catalog<\/h4>\n\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 Test device
5.1 Loading assembly
5.1.1 General
5.1.2 Clamps
5.1.3 Transducers
5.2 Electronic data-processing equipment
5.3 Temperature measurement and control <\/td>\n<\/tr>\n
9<\/td>\n5.4 Devices for measuring test specimen dimensions
6 Test specimens
6.1 General
6.2 Shape and dimensions <\/td>\n<\/tr>\n
10<\/td>\n6.3 Preparation
7 Number of specimens
8 Conditioning
9 Procedure
9.1 Test atmosphere
9.2 Measurement of specimen cross-section
9.3 Clamping the specimen
9.4 Varying the temperature <\/td>\n<\/tr>\n
11<\/td>\n9.5 Performing the test
10 Expression of results
10.1 Symbols <\/td>\n<\/tr>\n
12<\/td>\n10.2 Calculation of the tensile storage modulus E\u2032
10.2.1 General
10.2.2 Avoidance of specimen resonance <\/td>\n<\/tr>\n
13<\/td>\n10.2.3 Correction for transducer resonance
10.2.4 Correction for apparatus compliance
10.2.5 Application of a length correction <\/td>\n<\/tr>\n
14<\/td>\n10.3 Calculation of the tensile loss factor tan \u03b4E
10.4 Calculation of the tensile loss modulus
10.5 Presentation of data as a function of temperature
11 Precision
12 Test report <\/td>\n<\/tr>\n
15<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Plastics. Determination of dynamic mechanical properties – Tensile vibration. Non-resonance method<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2019<\/td>\n16<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":305917,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1177,2641],"product_tag":[],"class_list":{"0":"post-305909","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-83-080-01","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/305909","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\/305917"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=305909"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=305909"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=305909"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}