{"id":307124,"date":"2024-10-19T21:03:12","date_gmt":"2024-10-19T21:03:12","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-148481998\/"},"modified":"2024-10-25T18:40:06","modified_gmt":"2024-10-25T18:40:06","slug":"bs-iso-148481998","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-148481998\/","title":{"rendered":"BS ISO 14848:1998"},"content":{"rendered":"<p>This International Standard specifies a method of measuring<\/p>\n<ul>\n<li>\n<p>the time required for the temperature of a solution of unsaturated-polyester resin and a catalyst, heated in a thermostatically controlled bath at 130 \u00b0C, to rise<\/p>\n<\/li>\n<li>\n<p>from 80 \u00b0C to 140 \u00b0C,<\/p>\n<\/li>\n<li>\n<p>from 80 \u00b0C to the maximum temperature reached;<\/p>\n<\/li>\n<li>\n<p>the maximum temperature reached;<\/p>\n<\/li>\n<li>\n<p>the speed of the reaction, determined by drawing a tangent at the point of inflection of the temperature\/time curve.<\/p>\n<\/li>\n<\/ul>\n<p>It applies in particular to unsaturated-polyester resins processed at a temperature higher than 100 \u00b0C.<\/p>\n<blockquote>\n<p>NOTE &#8211; The results are closely linked to the conditions. The aim of this International Standard is to define them as exactly as possible, particularly the following:<\/p>\n<\/blockquote>\n<ol style=\"list-style-type:lower-alpha\">\n<li>\n<p>The quantity and form of the resin sample being examined (test tube diameter, height of resin in the tube).<\/p>\n<\/li>\n<li>\n<p>The rate at which the sample is heated in the bath. For example, the use of a liquid having a relatively low heat capacity (ethylene glycol, silicone oil) leads to slower heating.<\/p>\n<\/li>\n<li>\n<p>The type of thermometer used. Thermometers having a response slower than that of a thermocouple, and resistance probes having too large a heat-sensitive element, are unsuitable.<\/p>\n<\/li>\n<li>\n<p>The position of the heat-sensitive element in the resin, both heightwise and relative to the axis of the test tube containing the resin.<\/p>\n<\/li>\n<li>\n<p>The nature of the catalyst.<\/p>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p><b>Plastics. Unsaturated-polyester resins. Determination of reactivity at 130\u00b0C<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/bsi\/\"><b>BSI<\/b><\/a><\/td>\n<td>1998<\/td>\n<td>12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":307130,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1178,2641],"product_tag":[],"class_list":{"0":"post-307124","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-83-080-10","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\/307124","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\/307130"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=307124"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=307124"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=307124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}