Simultaneous improvement of strength and toughness in fiber reinforced isotactic polypropylene composites by shear flow and a β-nucleating agent

RSC Advances ◽  
2014 ◽  
Vol 4 (28) ◽  
pp. 14766-14776 ◽  
Author(s):  
Yan-Hui Chen ◽  
Zhang-Yong Huang ◽  
Zhong-Ming Li ◽  
Jian-Hua Tang ◽  
Benjamin S. Hsiao
Keyword(s):  
Shear Flow ◽  
Glass Fiber ◽  
Isotactic Polypropylene ◽  
Nucleating Agent ◽  
Core Structure ◽  
Fiber Reinforced ◽  
Polypropylene Composites ◽  
Glass Fiber Reinforced ◽  
Strength And Toughness

Glass fiber reinforced isotactic polypropylene composites with specific skin–core structure demonstrate simultaneous improvement of strength and toughness.

scholarly journals Crystallization Behavior and Properties of Glass Fiber Reinforced Polypropylene Composites

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1198 ◽  
Author(s):  
Yuming Wang ◽  
Lihong Cheng ◽  
Xiaoqian Cui ◽  
Weihong Guo
Keyword(s):  
Glass Fiber ◽  
Flexural Modulus ◽  
Nucleating Agent ◽  
Fiber Reinforced ◽  
Scanning Calorimetry ◽  
Polypropylene Composites ◽  
Crystallization Ability ◽  
Glass Fiber Reinforced ◽  
The Matrix ◽  
Different Content

Glass fiber with different content and different kinds of compatibilizers were used to prepare glass fiber-reinforced polypropylene (GFRP) composites. β-nucleating agent with different content was used to prepare β-polypropylene (PP), after which the toughness, crystallization ability and heat resistance were all enhanced. Differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) showed that the crystallite degree and crystallization ability were all greatly improved and β-PP was in dominant position. At last, both β-nucleating agent and glass fiber were used to modify the PP composites (β-GFRP). The formation of β-form PP made the matrix softer, which was beneficial for energy absorption and enhancement of toughness. The tensile strength, flexural strength and flexural modulus were improved dramatically, which were attributed to the coeffect of framework structure of GF and β-form PP.

Crystallization and Mechanical Properties of Glass Fiber Reinforced Polypropylene Composites Molded by Rapid Heat Cycle Molding

2020 ◽  
Vol 21 (12) ◽  
pp. 2915-2926
Author(s):  
Aimin Zhang ◽  
Guoqun Zhao ◽  
Jialong Chai ◽  
Junji Hou ◽  
Chunxia Yang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Fiber Reinforced ◽  
Heat Cycle ◽  
Polypropylene Composites ◽  
Glass Fiber Reinforced

Foam injection molding of glass fiber reinforced polypropylene composites with laminate skins

2017 ◽  
Vol 39 (12) ◽  
pp. 4322-4332 ◽  
Author(s):  
Pibulchai Kasemphaibulsuk ◽  
Marcel Holzner ◽  
Takashi Kuboki ◽  
Andrew Hrymak
Keyword(s):  
Injection Molding ◽  
Glass Fiber ◽  
Fiber Reinforced ◽  
Polypropylene Composites ◽  
Glass Fiber Reinforced ◽  
Foam Injection Molding

Single and repeated low-velocity impact response of E-glass fiber-reinforced epoxy and polypropylene composites for different impactor shapes

2019 ◽  
pp. 089270571988691 ◽  
Author(s):  
Akar Dogan
Keyword(s):  
Glass Fiber ◽  
Fiber Volume Fraction ◽  
Volume Fraction ◽  
Low Velocity Impact ◽  
Fiber Reinforced ◽  
Low Velocity ◽  
Fiber Volume ◽  
Velocity Impact ◽  
Polypropylene Composites ◽  
Glass Fiber Reinforced

This study focuses on the effects of low-velocity impact (LVI) response of thermoset (TS) and thermoplastic (TP) matrix-based composites. In this study, the effects of the impactor shapes on the low-velocity impact response of the composite panels that produced from different matrix was investigated. Unidirectional E-glass fiber fabrics with an areal density of 300 g/m2 as reinforcement and epoxy matrix were used to produce TS composite. The vacuum-assisted resin infusion molding (VARIM) method was used to manufacture composite panels. The thermoplastic composites were manufactured with E-glass fiber-reinforced polypropylene prepregs. The tensile strength of TS matrix-based composites is higher than TP matrix-based composites that have the same fiber volume fraction. Despite being under the same impact energy, the TP specimens possess higher perforation threshold than TS specimens. The shape of the impactor significantly affected the perforation threshold. Besides, the impact number that caused perforation reduced dramatically in conical impactor. The repeated impact number that caused perforation is 36 for hemispherical (HS) impactor, but it is only 3 for conical impactor for polypropylene matrix-based composite. Moreover, a significant effect of fiber volumetric ratio on impact resistance was observed. The perforation threshold of glass fiber-reinforced polypropylene composites for 40% and 50% fiber volume fraction are 61 and 98 J, respectively. The perforation threshold of TP and TS specimens for HS impactor that has the same stacking sequence is 61 and 55 J, respectively.

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