{"id":3745,"date":"2021-10-02T01:00:27","date_gmt":"2021-10-01T17:00:27","guid":{"rendered":"https:\/\/fuhtai.com\/sbr\/"},"modified":"2021-10-08T19:43:29","modified_gmt":"2021-10-08T11:43:29","slug":"sbr","status":"publish","type":"page","link":"https:\/\/fuhtai.com\/en\/sbr\/","title":{"rendered":"SBR"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-background-color:#f7f8f9;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1310.4px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:20px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-center fusion-title-text fusion-title-size-three\" style=\"--awb-margin-top-small:0px;--awb-margin-right-small:0px;--awb-margin-bottom-small:20px;--awb-margin-left-small:0px;\"><h3 class=\"fusion-title-heading title-heading-center fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:28;--minFontSize:28;line-height:1.3;\">SBR<\/h3><\/div><div class=\"fusion-text fusion-text-1\" style=\"--awb-margin-right:10px;\"><ul>\n<li>introduction:<br \/>\nSBR is a synthetic rubber for general use. It is mass-produced today and currently accounts for about 65% of all synthetic rubber production.<br \/>\nSBR is a copolymer of styrene (C<sub>6<\/sub>H<sub>5<\/sub>CH=CH<sub>2<\/sub>) and butadiene (CH<sub>2<\/sub>=CH-CH=CH<sub>2<\/sub>), made by emulsion polymerization. SBR can be divided into two categories according to the polymerization temperature.It is called hot rubber when it is polymerized at 40~50 \u00b0C, and it is cold rubber when it is polymerized at 5-10 \u00b0C. SBR produced by low-temperature polymerization has a small molecular weight distribution range, fewer molecular branches, rich regularity, and properties are better than high-temperature polymerized rubber.<br \/>\nIn addition to emulsion polymerization, there are also solution polymerization SBR production, which has the following advantages over emulsion polymerization SBR:<br \/>\n1) Rolling shrinkage, less extrusion expansion, smooth surface<br \/>\n2) Good streaming model<br \/>\n3) Good wear resistance<br \/>\n4) High filling, reducing cost<\/li>\n<li>Characteristics;<br \/>\n<table border=\"0\" width=\"640\">\n<tbody>\n<tr>\n<td colspan=\"2\" width=\"554\" height=\"14\">SBR is widely used as general rubber. Compared with natural rubber, it has the following advantages and disadvantages<\/td>\n<\/tr>\n<tr>\n<td width=\"320\" height=\"14\"><img class=\"lazyload\" decoding=\"async\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%2710%27%20height%3D%2713%27%20viewBox%3D%270%200%2010%2013%27%3E%3Crect%20width%3D%2710%27%20height%3D%2713%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"..\/..\/Images\/arrow.gif\" width=\"10\" height=\"13\" align=\"absmiddle\" border=\"0\"> advantage<br \/>\n1) Uniform quality, less foreign matter<br \/>\n2) Less unevenness of vulcanization rate<br \/>\n3) Excellent aging resistance, heat resistance, and abrasion resistance<br \/>\n4) Coking (scorch, premature vulcanization) is very stable<br \/>\n5) Flat vulcanization, less recovery from vulcanization<\/td>\n<td width=\"320\" height=\"14\"><img class=\"lazyload\" decoding=\"async\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%2710%27%20height%3D%2713%27%20viewBox%3D%270%200%2010%2013%27%3E%3Crect%20width%3D%2710%27%20height%3D%2713%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"..\/..\/Images\/arrow.gif\" width=\"10\" height=\"13\" align=\"absmiddle\" border=\"0\"> shortcoming<br \/>\n1) The mechanical properties of pure rubber vulcanizates are very poor<br \/>\n2) Vulcanization is slow, and a large amount of vulcanization accelerator must be used<br \/>\n3) Weak tensile strength<br \/>\n4) Low elasticity, high dynamic heat<br \/>\n5) Poor adhesion, it must be equipped with appropriate adhesion imparting agent<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/li>\n<li>Classification:<br \/>\nDomestic SBR is mainly divided into the following four types<br \/>\nSBR 1500- Polluting, there are also non-polluting products on the market<br \/>\nSBR 1502- Non-polluting<br \/>\nSBR 1778- Non-polluting, containing 37.5% naphthene oil<br \/>\nSBR 1712- Pollution, containing 37.5% aromatic oil<\/li>\n<li>Origin:<br \/>\n<table border=\"0\" width=\"580\">\n<tbody>\n<tr>\n<td colspan=\"2\" width=\"550\" height=\"14\">At present, there are mainly domestic TSRC producing SBR at all levels, and various traders importing SBR from various countries, mainly in the following countries:<\/td>\n<\/tr>\n<tr>\n<td width=\"236\" height=\"14\"> Japan ZEON<br \/>\n<img class=\"lazyload\" decoding=\"async\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%2710%27%20height%3D%2713%27%20viewBox%3D%270%200%2010%2013%27%3E%3Crect%20width%3D%2710%27%20height%3D%2713%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"..\/..\/Images\/arrow.gif\" width=\"10\" height=\"13\" align=\"absmiddle\" border=\"0\"><\/td>\n<td width=\"314\" height=\"14\"><img class=\"lazyload\" decoding=\"async\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%2710%27%20height%3D%2713%27%20viewBox%3D%270%200%2010%2013%27%3E%3Crect%20width%3D%2710%27%20height%3D%2713%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"..\/..\/Images\/arrow.gif\" width=\"10\" height=\"13\" align=\"absmiddle\" border=\"0\">Korea KUMHO<br \/>\n<img class=\"lazyload\" decoding=\"async\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%2710%27%20height%3D%2713%27%20viewBox%3D%270%200%2010%2013%27%3E%3Crect%20width%3D%2710%27%20height%3D%2713%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"..\/..\/Images\/arrow.gif\" width=\"10\" height=\"13\" align=\"absmiddle\" border=\"0\"><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/li>\n<\/ul>\n<\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"align-self: center;margin-left: auto;margin-right: auto;width:100%;\"><div 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