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公开(公告)号：US20220186001A1
公开(公告)日：2022-06-16
申请号：US17432399
申请日：2020-02-17
摘要： The invention relates to a method for checking the silanization of pale-colored fillers, where a mixture comprising at least one silanized pale-colored filler, preferably silanized silica, and comprising at least one rubber is irradiated with ultrasound waves in a frequency range of 4 to 10 MHz, preferably of 5 to 7 MHz, and the signal strength of the ultrasound waves is determined after transmission through the rubber mixture, where the relative attenuation coefficient αrel of the rubber mixture in the frequency range of the ultrasound waves is determined, the standard deviation σ of the relative attenuation coefficient αrel is determined, and αrel and σ are used for detection of incipient crosslinking of the rubber mixture.
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公开(公告)号：US10988602B2
公开(公告)日：2021-04-27
申请号：US16072620
申请日：2017-01-19
IPC分类号： C08L21/00 , C08K3/36 , C09C1/30 , C08K9/06 , C09C3/00 , C08L9/06 , C08K3/013 , C08C19/25 , G01N29/34
摘要： The invention relates to a method of testing silanization, which permits inline control of the in situ silanization of light-colored fillers, especially precipitated silicas. This enables continuous in situ silanization in the production of rubber mixtures comprising silanized light-colored fillers, and representative control of the rubber mixture under production conditions. The process is additionally nondestructive and has a high tolerance for carbon black as an additional constituent of the rubber mixture.
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