{"id":305775,"date":"2024-10-19T20:56:09","date_gmt":"2024-10-19T20:56:09","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-877-32018\/"},"modified":"2024-10-25T18:31:03","modified_gmt":"2024-10-25T18:31:03","slug":"bs-en-iso-877-32018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-877-32018\/","title":{"rendered":"BS EN ISO 877-3:2018"},"content":{"rendered":"<p>This document specifies a method for exposing plastics to concentrated solar radiation using reflecting concentrators to accelerate the weathering processes. The purpose is to assess property changes produced after specified stages of such exposures. The reflecting concentrators used in these exposures are sometimes referred to as \u201cFresnel reflectors\u201d because in cross-section the array of mirrors used to concentrate the solar radiation resembles the cross-section of a Fresnel lens.<\/p>\n<p>General guidance concerning the scope of the ISO&nbsp;877 series is given in ISO&nbsp;877\u20111.<\/p>\n<blockquote>\n<p>NOTE Additional information about solar concentrating exposures, including a partial list of standards in which they are specified, is given in the Bibliography.<\/p>\n<\/blockquote>\n<h4>PDF Catalog<\/h4>\n<table border=\"1px\" class=\"des-table\">\n<tr>\n<th>PDF Pages<\/th>\n<th>PDF Title<\/th>\n<\/tr>\n<tr>\n<td><b>2<b><\/td>\n<td>National foreword  <\/td>\n<\/tr>\n<tr>\n<td><b>4<b><\/td>\n<td>European foreword  <\/td>\n<\/tr>\n<tr>\n<td><b>6<b><\/td>\n<td>Foreword  <\/td>\n<\/tr>\n<tr>\n<td><b>7<b><\/td>\n<td>Introduction  <\/td>\n<\/tr>\n<tr>\n<td><b>9<b><\/td>\n<td>1 Scope <br \/> 2 Normative references <br \/> 3 Terms and definitions <br \/> 4 Principle  <\/td>\n<\/tr>\n<tr>\n<td><b>10<b><\/td>\n<td>5 Apparatus <br \/> 5.1 General requirements  <\/td>\n<\/tr>\n<tr>\n<td><b>11<b><\/td>\n<td>5.2 Apparatus for measurement of climatic factors <br \/> 6 Test specimens <br \/> 7 Exposure conditions <br \/> 7.1 Orientation of mirrors  <\/td>\n<\/tr>\n<tr>\n<td><b>12<b><\/td>\n<td>7.2 Exposure site <br \/> 7.3 Temperature control  <\/td>\n<\/tr>\n<tr>\n<td><b>13<b><\/td>\n<td>7.4 Irradiance level  <\/td>\n<\/tr>\n<tr>\n<td><b>14<b><\/td>\n<td>8 Exposure stages <br \/> 8.1 General <br \/> 8.2 Solar radiant exposure <br \/> 8.2.1 Guidance for selection of the exposure stage <br \/> 8.2.2 Instrumental measurement of solar radiant exposure  <\/td>\n<\/tr>\n<tr>\n<td><b>15<b><\/td>\n<td>9 Procedure <br \/> 9.1 Mounting of test specimens <br \/> 9.2 Mounting of reference materials (if used) <br \/> 9.3 Climatic observations <br \/> 9.4 Exposure of test specimens <br \/> 9.4.1 General <br \/> 9.4.2 Exposure cycles <br \/> 9.4.3 Testing under glass  <\/td>\n<\/tr>\n<tr>\n<td><b>16<b><\/td>\n<td>10 Expression of results <br \/> 10.1 Determination of changes in properties <br \/> 10.2 Climatic conditions and observations <br \/> 10.2.1 General <br \/> 10.2.2 Temperature <br \/> 10.2.3 Relative humidity <br \/> 10.2.4 Levels (values) of exposure stages  <\/td>\n<\/tr>\n<tr>\n<td><b>17<b><\/td>\n<td>10.2.5 Precipitation <br \/> 10.2.6 Time of wetness <br \/> 10.2.7 Other observations <br \/> 11 Test report  <\/td>\n<\/tr>\n<tr>\n<td><b>18<b><\/td>\n<td>Bibliography  <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><b>Plastics. Methods of exposure to solar radiation &#8211; Intensified weathering using concentrated solar radiation<\/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>2018<\/td>\n<td>20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":305782,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1177,2641],"product_tag":[],"class_list":{"0":"post-305775","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\/305775","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\/305782"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=305775"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=305775"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=305775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}