本发明的课题是提供一种疲劳性、低放热性以及拉伸特性均优异的硫化橡胶的原料、亦即橡胶湿法母炼胶的制造方法。可以利用以下方法来制造橡胶湿法母炼胶,该方法包括:准备镁含量为150ppm以下的胶乳的工序和制作包含橡胶成分及炭黑的混合液的工序。胶乳可以包含90体积%粒径为2μm以下的橡胶粒子。制作混合液的工序可以包括将胶乳和分散溶剂混合的步骤(a)和将包含炭黑的浆料及利用步骤(a)得到的胶乳溶液混合的步骤(b)。橡胶湿法母炼胶的制造方法可以满足下式I。0.1<b/a<1.0(式I)(式I中,a表示胶乳的镁含量(ppm)。b表示混合液中的炭黑相对于混合液的橡胶成分100质量份的量(质量份)。
A method of manufacturing a wet rubber masterbatch includes preparing latex containing magnesium in an amount which is not greater than 150 ppm; and making a liquid mixture that includes a rubber component and carbon black. The latex may include rubber particles for which the 90 vol % particle diameter is not greater than 2 μm. The liquid mixture can be made by a step (a) in which the latex and a dispersion solvent are mixed; and a step (b) in which a latex solution obtained at step (a) and a slurry containing the carbon black are mixed. The method for manufacturing a wet rubber masterbatch may satisfy: 0.1<1.0, where a indicates amount (ppm) of magnesium present in latex; and b indicates amount (parts by mass) of carbon black in the liquid mixture for every 100 parts by mass of rubber component in the liquid mixture.
橡胶湿法母炼胶的制造方法、橡胶组合物的制造方法以及轮胎的制造方法
2020-12-29
Patent
Electronic Resource
Chinese
IPC: | C08J Verarbeitung , WORKING-UP / B60C VEHICLE TYRES , Fahrzeugreifen / C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |