Ultrastrong, flexible and lightweight anisotropic polypropylene foams with superior flame retardancy

Huang, Pengke; Wu, Minghui; Pang, Yongyan; Shen, Bin; Wu, Fei; Lan, Xiaoqin; Luo, Haibin; Zheng, Wenge

doi:10.1016/j.compositesa.2018.10.027

Cited by 54 publications

(34 citation statements)

References 70 publications

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“…The flame retardancy of polymer foams can be improved by using the following two methods. One method is adding flame retardants into the foaming formula using physical blending [129,130,131,132,133,134]. Sun et al [27] studied the effects of ARHC on the flame retardancy of isocyanate-based PI foams.…”

Section: Current Problems and Possible Solutionsmentioning

confidence: 99%

Recent Trends of Foaming in Polymer Processing: A Review

et al. 2019

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Polymer foams have low density, good heat insulation, good sound insulation effects, high specific strength, and high corrosion resistance, and are widely used in civil and industrial applications. In this paper, the classification of polymer foams, principles of the foaming process, types of blowing agents, and raw materials of polymer foams are reviewed. The research progress of various foaming methods and the current problems and possible solutions are discussed in detail.

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Section: Current Problems and Possible Solutionsmentioning

confidence: 99%

Recent Trends of Foaming in Polymer Processing: A Review

et al. 2019

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“…[1][2][3][4][5][6] Because automotive parts require lightweight materials, PP must be lightweight. [11][12][13][14][15][16][17] Chemical foaming agents and physical foaming agents are the most popular foaming agents for the preparation of PP microcellular foaming materials. [11][12][13][14][15][16][17] Chemical foaming agents and physical foaming agents are the most popular foaming agents for the preparation of PP microcellular foaming materials.…”

Section: Introductionmentioning

confidence: 99%

“…15,[18][19][20] Due to numerous advantages such as inexpensive, nontoxic, noncombustible, and ecofriendly, supercritical carbon dioxide (sc-CO 2 ) has become the most commonly used physical foaming agent for the preparation of PP foams with microsize cells. 13,28 After the sc-CO 2 is dissolved in the polymer melt to form a homogeneous system, the homogeneous system can be in a thermodynamically unstable supersaturated state by rapid temperature drop or depressurization, thereby causing phase separation to form a bubble nucleus. Therefore, it is much easier to be dissolved in melt polymers.…”

Section: Introductionmentioning

confidence: 99%

Strategy for the preparation of lightweight polypropylene/polyethylene‐octene elastomer composite foams with different phase morphologies using supercritical carbon dioxide

Wang

2019

J of Applied Polymer Sci

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Polypropylene (PP)/polyethylene-octene elastomer (POE) composites with a "sea-island" structure and a cocontinuous structure were prepared. With the selection of a suitable foaming temperature, the supercritical carbon dioxide foaming of PP/POE composites with different phase morphologies occurred only in the POE phase. The effects of the POE content, foaming temperature, pressure, and number of layers on the cell size, cell density, apparent density, foaming layer density, and foaming ratio under different phase morphologies were investigated by scanning electron microscopy, polarized optical microscopy, differential scanning calorimetry, and dynamic thermomechanical analysis. This article provides a novel approach for foaming PP at a low temperature. For PP/POE-blended composites with a "sea-island" structure, the foaming temperature is as low as 80 C, and for PP/POE alternating multilayered composites with a cocontinuous structure, foaming can occur at 40 C. Compared with the conventional methods for foaming PP, this method avoids the problems of a high foaming temperature, a narrow range of the foaming temperature, and a low melt strength of the PP. Thus, the PP foaming method was successfully improved, yielding a new technique for the preparation of lightweight PP.

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“…PP has a high chemical resistance on account of its nonpolar character, and it has no inherent flame-retardant properties. Moreover, reinforced PP by glass fiber or talc can reduce the isotropic shrinkage and heat distortion resistance [ 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 ].…”

Section: Thermoplastics For Midmentioning

confidence: 99%

3D-MID Technology for Surface Modification of Polymer-Based Composites: A Comprehensive Review

et al. 2020

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The three-dimensional molded interconnected device (3D-MID) has received considerable attention because of the growing demand for greater functionality and miniaturization of electronic parts. Polymer based composite are the primary choice to be used as substrate. These materials enable flexibility in production from macro to micro-MID products, high fracture toughness when subjected to mechanical loading, and they are lightweight. This survey proposes a detailed review of different types of 3D-MID modules, also presents the requirement criteria for manufacture a polymer substrate and the main surface modification techniques used to enhance the polymer substrate. The findings presented here allow to fundamentally understand the concept of 3D-MID, which can be used to manufacture a novel polymer composite substrate.

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Ultrastrong, flexible and lightweight anisotropic polypropylene foams with superior flame retardancy

Cited by 54 publications

References 70 publications

Recent Trends of Foaming in Polymer Processing: A Review

Recent Trends of Foaming in Polymer Processing: A Review

Strategy for the preparation of lightweight polypropylene/polyethylene‐octene elastomer composite foams with different phase morphologies using supercritical carbon dioxide

3D-MID Technology for Surface Modification of Polymer-Based Composites: A Comprehensive Review

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