TAILIEUCHUNG - Rubber Compounding - Chemistry and Applications Part 7

Tham khảo tài liệu 'rubber compounding - chemistry and applications part 7', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 6 Carbon Black Wesley A. Wampler Thomas F. Carlson and William R. Jones Sid Richardson Carbon Company Fort Worth Texas . I. INTRODUCTION Carbon black is produced by the incomplete combustion of organic substances probably first noted in ancient times by observing the deposits of a black substance on objects close to a burning material. Its first applications were no doubt as a black pigment and the first reported use was a colorant in inks by the Chinese and Hindus in the third century . 1 . It was not until the early twentieth century when carbon black was first mixed into rubber that its possible usefulness in this area was explored. The fact that carbon black has the ability to significantly improve the physical properties of rubber often referred to as reinforcement has provided its largest market today . the tire industry. Currently about 5 million metric tons of carbon black is used worldwide in tires annually 2 . A typical tire contains 30-35 carbon black and there are normally several grades of carbon black in the tire depending on the reinforcement requirements of the particular component of the tire. Of course carbon black is also used in many non-tire rubber applications owing to its ability to reinforce the rubber and to its use as a cost reduction diluent in the compound. Non-tire rubber products currently require about 2 million metric tons of carbon black annually on a worldwide basis 2 . This chapter brings the reader up to date on how carbon black is manufactured how its quality is controlled how the carbon black characteristics influence rubber properties and how the different grades of carbon black are classified and used then finally presents a review of carbon black surface chemistry and how the modification of these surfaces holds substantial promise for future developments. Copyright 2004 by Taylor Francis II. DEFINITIONS Before beginning there is merit in reviewing some basic definitions in carbon black technology. Although it is

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