Effect of Curing Agent, Temperature, and Catalyst on Physical-Mechanical Properties of HTPBBased Highly-filled Composite

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Mohamad Taghi Nejad Hadi; KEBRITCHI ABBAS; Niazi Mohamad Reza; Mombini Jahanbakhsh

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Paper Information

Journal: APPLIED RESEARCH IN CHEMICAL POLYMER ENGINEERING Year:2020 | Volume:3 | Issue:4 Page(s): 25-42

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Title

Effect of Curing Agent, Temperature, and Catalyst on Physical-Mechanical Properties of HTPBBased Highly-filled Composite

Author(s)

Mohamad Taghi Nejad Hadi | KEBRITCHI ABBAS | Niazi Mohamad Reza | Mombini Jahanbakhsh | Issue Writer Certificate

Keywords

DBTDL Catalyst

Casting Temperature

Curing Agent

Pot-Life

Chemorheology

Abstract

Research Subject: Regarding new researches on Chemorheology of highly-filled composites, it is determined that HTPB slurry should have convenient viscosity for ease of casting. In the other words, available time for appropriate casting of highly-filled composite after Curing Agent addition called Pot-Life. Long Pot-Life of HTPB binder system is necessary for good processability and non-defect production of highly-filled composite grains. In addition to long Pot-Life, the physicalmechanical properties of HTPB-based highly-filled composite are also important. Research Approach: In this research, effect of Curing Agent type (molecular structure), Casting Temperature and the amount of DBTDL as a curing catalyst on chemorheological behavior of HTPB binder system and physical-mechanical properties of highly-filled composite were investigated. Toluene diisocyanate (TDI), isophorone diisocyanate (IPDI) and hexamethylene diisocyanate (HDI) were selected in order to investigate the role of molecular structure of Curing Agent on Chemorheology of binder system and its slurry and also on physical-mechanical properties of highly-filled composite. Moreover, temperatures of 50, 40, and 60 ˚ C, were selected to study the effect of Casting Temperature on Chemorheology. Main Results: By every 10 ˚ C decreasing of Casting Temperature, potlife of binder system (based on IPDI and TDI) was increased about 10 min. Pot-Life of binder system and highly-filled composite slurry based on IPDI in the presence of %0. 005 DBTDL (the optimum content) showed the longest Pot-Life at similar temperatures. The elastomer and highly-filled composite based on IPDI showed the highest crosslinking density (CLD) and modulus in comparison to other Curing Agents, retaining tensile strength and adequate elongation.

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APA: Copy

Mohamad Taghi Nejad, Hadi, KEBRITCHI, ABBAS, Niazi, Mohamad Reza, & Mombini, Jahanbakhsh. (2020). Effect of Curing Agent, Temperature, and Catalyst on Physical-Mechanical Properties of HTPBBased Highly-filled Composite. APPLIED RESEARCH IN CHEMICAL POLYMER ENGINEERING, 3(4 ), 25-42. SID. https://sid.ir/paper/267780/en

Vancouver: Copy

Mohamad Taghi Nejad Hadi, KEBRITCHI ABBAS, Niazi Mohamad Reza, Mombini Jahanbakhsh. Effect of Curing Agent, Temperature, and Catalyst on Physical-Mechanical Properties of HTPBBased Highly-filled Composite. APPLIED RESEARCH IN CHEMICAL POLYMER ENGINEERING[Internet]. 2020;3(4 ):25-42. Available from: https://sid.ir/paper/267780/en

IEEE: Copy

Hadi Mohamad Taghi Nejad, ABBAS KEBRITCHI, Mohamad Reza Niazi, and Jahanbakhsh Mombini, “Effect of Curing Agent, Temperature, and Catalyst on Physical-Mechanical Properties of HTPBBased Highly-filled Composite,” APPLIED RESEARCH IN CHEMICAL POLYMER ENGINEERING, vol. 3, no. 4 , pp. 25–42, 2020, [Online]. Available: https://sid.ir/paper/267780/en

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