Catalytic Graphitized Silicone Rubber Coatings with Highly Graphitized Ceramic Layer and Superior Ablation Resistance

Chen, Yang; Liu, Zhuodong; Huang, Yisen; Liang, Mei; Zou, Huawei

doi:10.1002/mame.202200355

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…After sintering, the flexural strength of silicone rubber is generally high. [17][18][19] What is more some special substances, including platinum, [20][21][22] iron oxide, 23 and boron, 24 can significantly promote ceramification of silicone rubber. In addition to silicone rubber, other special polymers containing boron and silicon are also easy to ceramification.…”

Section: Introductionmentioning

confidence: 99%

Sintering behavior of ceramic ethylene‐propylene‐diene rubber/pyrophyllite/zinc borate composites

He,

Ji,

Chen

et al. 2023

Polymers for Advanced Techs

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Ceramic polymer materials have great future applications in the field of fireproof materials. However, ceramic polyolefins have shortcomings such as few available inorganic fillers, high sintering temperature, and low flexural strength. Therefore, achieving rapid sintering of ceramic ethylene‐propylene‐diene rubber (EPDM) is an urgent problem that needs to be solved. Herein, we prepared ceramic EPDM materials using pyrophyllite as aggregate and zinc borate as flux. The materials were prepared using a mixer and sintered in a muffle furnace at 850 and 1000°C. The flexural strength of the sinter residue was tested by a material testing machine. The microstructure changes during the ceramification process were characterized using scanning electron microscopy (SEM), thermogravimetric analysis (TG), derivative thermogravimetric analysis (DTG), differential thermal analysis (DTA), and x‐ray diffraction (XRD). The results indicated that the EPDM filled with pyrophyllite and zinc borate had a flexural strength of 2.6 MPa after sintering at 850°C. After sintering at 1000°C, its flexural strength further increased up to 12.3 MPa. The SEM results indicated that as the temperature increased, the zinc borate melted and filled in the space among pyrophyllite particles, and the zinc borate and the pyrophyllite were sintered into a dense whole. The TG, DTG and DTA testing results indicated that the melting and decomposition behaviors of the pyrophyllite‐zinc borate mixture changed compared with pure pyrophyllite and zinc borate. The XRD results indicated that during the sintering process, the crystalline structure of the zinc borate and the pyrophyllite gradually transformed into a quartz‐based crystalline structure. It is promising that the ceramic polyolefin materials are prepared by the pyrophyllite/zinc borate combination.

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Section: Introductionmentioning

confidence: 99%

Sintering behavior of ceramic ethylene‐propylene‐diene rubber/pyrophyllite/zinc borate composites

He,

Ji,

Chen

et al. 2023

Polymers for Advanced Techs

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show abstract

“…One of the most unique flame-retardant systems for polymer materials, characterized by a physical mechanism of action, is ceramization [1][2][3][4][5][6][7][8]. In conditions of elevated temperatures and/or fire, ceramizable composites initiate the process of formation of a ceramic structure on the surface of the composite, with very good barrier and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of Silicone Oil on Properties and Performance of Ceramizable Styrene-Butadiene Rubber-Based Composites

et al. 2023

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New trends in the circular economy and sustainability are pointing towards the gradual elimination of standard flame retardants such as phosphorus compounds or halogenated compounds. New solutions are therefore being sought in this area and ceramizable composites could be an interesting alternative. Weak rheological properties are one of the main disadvantages of ceramizable composites. This study tested ceramizable composites composed of styrene-butadiene rubber (SBR) as a polymer matrix and mica as a mineral filler and aimed to improve the viscoelastic properties of silicone oil as a plasticizer. To characterize this composite’s mechanical properties before and after ceramization, the viscoelastic properties were tested with a dynamic oscillating rheometer and the thermal behavior with a cone calorimeter. This paper also provides results showing differences (via the abovementioned properties) between vulcanization with sulfur and that with peroxide for the ceramizable composites based on SBR. The presented results, showing changes in mechanical properties, dynamic viscosity or flammability, among others, allow a better understanding of elastomeric composites with ceramizable flame-retardant systems. Such composites can find a wide range of applications, from lagging for electrical cables to building elements such as floor coverings and fire barriers.

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Improving ablation-resistant properties of novolac epoxy coatings via boric acid or POSS-modified expandable graphite with a PDA bridge

Hao,

Lin,

Jiang

et al. 2023

Appl. Phys. A

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Catalytic Graphitized Silicone Rubber Coatings with Highly Graphitized Ceramic Layer and Superior Ablation Resistance

Cited by 3 publications

References 27 publications

Sintering behavior of ceramic ethylene‐propylene‐diene rubber/pyrophyllite/zinc borate composites

Sintering behavior of ceramic ethylene‐propylene‐diene rubber/pyrophyllite/zinc borate composites

Effect of Silicone Oil on Properties and Performance of Ceramizable Styrene-Butadiene Rubber-Based Composites

Improving ablation-resistant properties of novolac epoxy coatings via boric acid or POSS-modified expandable graphite with a PDA bridge

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