The invention relates to a flame-retardant life buoy, which is prepared from the following raw materials in parts by weight: 70-110 parts of polyethylene, 0.8-1.2 parts of a cross-linking agent, 22-30parts of a foaming agent, 1.5-3.5 parts of zinc oxide, 0.12-0.18 part of tribasic lead sulfate, 0.15-0.19 part of a demolding agent stearic acid and 30-46 parts of calcium carbonate. The preparationmethod comprises the following steps: (1) respectively weighing the materials in the formula, adding the weighed materials into a mixer, stirring at 50-60 DEG C for 3-4 minutes, transferring into a mixing mill, and mixing at 110-120 DEG C for 4-6 minutes; (2) putting the mixed material into a normal-temperature double-roller open mill, and rolling into sheets, or extruding into sheets by an extruder; and (3) cutting a certain amount of the material sheets as required, putting the cut material sheets into a mold, carrying out hot pressing in a press vulcanizer at 170-180 DEG C under a pressureof 8-10 MPa for 8-10 min, opening the mold, cutting edges, and carrying out frosting treatment.
本发明涉及一种阻燃救生圈,所述救生圈由以下重量份的原料制成:聚乙烯70~110、交联剂0.8~1.2、发泡剂22~30、氧化锌1.5~3.5、三盐基性硫酸铅0.12~0.18、脱模剂硬脂酸0.15~0.19、碳酸钙30~46。其制备方法如下:(1)将上述配方中的各物料分别称重后加入混料机中在50~60℃搅拌3~4min,移到混炼机中以110~120℃的温度混炼4~6min;(2)将混炼好的料投入到常温双辊开炼机中辊压成片,或由挤出机挤出成片;(3)按需裁取一定量的料片放入模具,并在平板硫化机中热压,温度170~180℃,压力8~10MPa,热压8~10min,开模,裁边,磨砂处理。
Flame-retardant life buoy and preparation method thereof
一种阻燃救生圈及其制备方法
2020-04-28
Patent
Elektronische Ressource
Chinesisch
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B63C LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS , Zuwasserlassen, Trockenstellen, Docken oder Bergen von Schiffen / C08J Verarbeitung , WORKING-UP / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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