Effects of Cashew Nut Shell Liquid and Its Decarboxylated Form on the Properties of Natural Rubber

被引：8

作者：

Sookyung, Uraiwan ^{[1
]}

Thitithammawong, Anoma ^{[1
]}

Nakason, Charoen ^{[2
]}

Pakhathirathien, Charoen ^{[3
]}

Thaijaroen, Woothichai ^{[4
]}

机构：

[1] Prince Songkla Univ, Fac Sci & Technol, Dept Rubber Technol & Polymer Sci, Pattani Campus, Pattani 94000, Thailand

[2] Prince Songkla Univ, Fac Sci & Ind Technol, Suratthani Campus, Suratthani 84000, Thailand

[3] Prince Songkla Univ, Fac Sci & Technol, Dept Sci, Pattani Campus, Pattani 94000, Thailand

[4] Natl Met & Mat Technol Ctr MTEC, Pathum Thani 12120, Thailand

来源：

JOURNAL OF POLYMERS AND THE ENVIRONMENT | 2018年 / 26卷 / 08期

关键词：

Natural rubber; Cashew nut shell liquid; Decarboxylated cashew nut shell liquid; Renewable material; Curing activator; PHOSPHORYLATED CARDANOL PREPOLYMER; MECHANICAL-PROPERTIES; CURE CHARACTERISTICS; PHENOLIC RESINS; MELT RHEOLOGY; CNSL; POLYMERS; BLENDS; PROCESSABILITY; NANOCOMPOSITES;

D O I：

10.1007/s10924-018-1227-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Effects of addition of raw cashew nut shell liquid (CNSL) or its decarboxylated form (D-CNSL or cardanol) on curing characteristics, physical properties and temperature scanned stress relaxation were investigated. The study revealed that the CNSL containing high anacardic acid concentration acts as an acid activator and strongly affects curing behavior of NR compounds. The effective curing rate and curing efficiency, i.e., torque difference, crosslink density, and activation energy for curing, clearly increased with 2-5 phr of CNSL. Furthermore, physical properties and thermal stability also improved. However, when the acidity was removed by forming D-CNSL, the effects were totally different from those of the CNSL. The D-CNSL behaves like a plasticizer improving chain flexibility and might show dilution effects if used at a high content in the compound formulation. These effects are clearly seen in decreased curing rate and curing efficiency, together with slight losses of tensile properties, tear strength, and thermal stability, with D-CNSL addition.

引用

页码：3451 / 3457

页数：7

共 32 条

[1] Effects of cashew nut shell liquid as a plasticizer on cure characteristics, processability, and mechanical properties of 50:50 NR/EPDM blends:: A comparison with paraffin oil [J].