Synthesis, structure, and properties of high‐impact polystyrene/octavinyl polyhedral oligomeric silsesquioxane nanocomposites

Hu, Kun; Cui, Zhong‐Kai; Yuan, Yongliang; Zhuang, Qixin; Liu, Xiaoyun; Han, Zhewen

doi:10.1002/pc.23265

Cited by 19 publications

(20 citation statements)

References 28 publications

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“…HIPS is the rubber reinforced polystyrene plastic, which exhibits significantly enhanced impact strength compared to pure polystyrene. There are two phases in HIPS: polystyrene as continuous phase and rubber as dispersed phase . This two‐phases texture structure of HIPS is called salami or core‐shell structure .…”

Section: Introductionmentioning

confidence: 99%

“…This two‐phases texture structure of HIPS is called salami or core‐shell structure . It is usually synthesized by bulk radical polymerization in which the rubber is added at the beginning of the polymerization . Why is the salami morphology so important?…”

Section: Introductionmentioning

confidence: 99%

“…The SEM images showed that, with using extrusion calendaring, carbon black dispersion is improved and this lead to higher compression ratio and higher drawing speed. In 2014, Zhong‐Kai and coworkers produced nanocomposites of HIPS/octavinyl polyhedral oligomeric silsesquioxane and characterized their properties . Results showed that thermo‐stability and mechanical properties of these nanocomposites have been improved.…”

Section: Introductionmentioning

confidence: 99%

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Poly1‐hexene: New impact modifier in HIPS technology

Hanifpour

Bahri‐Laleh

Nekoomanesh‐Haghighi

et al. 2016

J of Applied Polymer Sci

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Poly1-hexene was prepared using a conventional heterogeneous Ziegler-Natta catalyst and its stereoregularity was characterized using 13 C-NMR analysis. New kind of high impact polystyrene (HIPS) was prepared by radical polymerization of styrene in the presence of different amounts of synthesized poly1-hexene (PH) as impact modifier (HIPS/PH) and compared with conventional high impact polystyrene with polybutadiene (HIPS/PB) as rubber phase. Scanning electron microscopy (SEM) revealed that the dispersion of poly1-hexene in polystyrene matrix was more uniform compared with it in HIPS/PB. The impact strength of HIPS/PH was 29-79% and 80-289% higher than that in HIPS/PB and neat polystyrene, respectively. FTIR was used to confirm more durability of HIPS/PH samples toward ozonation. To study the effect of rubber type and amount on the T g s of polystyrene, differential scanning calorimetry was employed. Results obtained from TGA demonstrated higher thermal stability of HIPS/PH sample in comparison with conventional HIPS/PB one. Our obtained results suggest new high impact polystyrene that in all studied aspects has better performance than the conventional HIPS.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Poly1‐hexene: New impact modifier in HIPS technology

Hanifpour

Bahri‐Laleh

Nekoomanesh‐Haghighi

et al. 2016

J of Applied Polymer Sci

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“…The absorption peaks at 1600, 1500, and 1450 cm −1 are characteristics of the benzene ring. The absorption bands at 752 and 693 cm −1 provide information that there exists a single‐substituted benzene ring . The most notable distinction between the two spectra is that the absorption band at 3400 cm −1 in the spectrum of water‐eroded composite disappears after water erosion.…”

Section: Resultsmentioning

confidence: 99%

Effect of water erosion on flame retardancy of high‐impact polystyrene/magnesium hydroxide composite and its mode of action

Liu

Chang

et al. 2019

Fire and Materials

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High-impact polystyrene (HIPS) flame retarded by magnesium hydroxide (MH) was treated in water at different conditions. The effect of water erosion on flame retardancy of the HIPS/MH composite and its mode of action was investigated by various means. The results indicate that both limiting oxygen index value and UL-94 rating of the HIPS/MH composite decrease observably after water erosion. The average heat release rate, average mass loss rate, total heat release, and total smoke release of the composite all increase remarkably after water erosion. The MH content in the surface layer of the HIPS/MH composite reduces, and the surface of this composite becomes rough and porous after erosion. The water-eroded composite shows a loose and discrete surface morphology after subjected to fire, which favors heat transfer and mass exchange between flame area and the underlying polymers. Consequently, both flame retardancy and smoke suppression of the polymer composite decrease significantly. The decrease in flame retardancy occurs in condensed phase. The result of this work has provided a basis for further investigations to prevent this detrimental effect induced by water erosion. K E Y W O R D S flame retardancy, high-impact polystyrene, magnesium hydroxide, thermal degradation, water erosion 1 | INTRODUCTION In recent years, developing halogen-free flame retardant (HFFR) polymer materials with low emission of smoke and poisonous gases has become a popular tendency worldwide. 1-4 Many investigations have indicated that inorganic metal hydroxide fillers, such as magnesium hydroxide (MH), aluminum trihydrate (ATH), and layered double hydroxide (LDH), are excellent nontoxic and smokesuppressing HFFR additives. Besides their environmental friendliness, their prices are low. These inorganic metal hydroxides play a flame retardant role in both the condensed and gaseous phases. 5-8 Their decomposition is an endothermic reaction, which reduces temperature of polymer, inhibits thermal degradation of polymer, and lowers supply of volatile gases for the burning flame. Meanwhile, the water released upon thermal degradation of these fillers can dilute the concentration of combustible gases and retards combustion. Furthermore, the metal oxides produced by degradation of metal hydroxides, such as MgO and Al 2 O 3 , are very stable at high temperature. Their deposition on the surface of polymer composite can act as a barrier and protect the underlying polymer from

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“…In the same way, the absorption peaks at 1604 cm -1 and 1496 cm -1 were assigned to the aromatic C=C stretching vibrations. Compared to pure polystyrene, high-impact polysterene (as a rubber-reinformed polystyrene plastic) had enhanced strength properties due to the addition of polybutadiene (the most common rubber used), which formed graft copolymers with polystyrene [28]. The presence of polybutadiene can be demonstrated by different absorption peaks.…”

Section: Ftir-atrmentioning

confidence: 99%