Thermal, morphological and mechanical properties of glass fiber reinforced star‐branched polyamide 6

Wang, Chunhua; Zhang, Yingwei; Yi, Yong; Lai, Dengwang; Yang, Jun; Wang, Wenzhi

doi:10.1002/pc.26482

Cited by 10 publications

(6 citation statements)

References 28 publications

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“…PA6 is widely used as a matrix for composite materials because it is a semi-crystalline thermoplastic, which has high hardness, impact resistance, excellent chemical properties, and heat resistance. [30][31][32] In addition, glass fiber (GF) and glass beads (GBs) are well-suitable as reinforced materials for composite materials because they are low density, excellent chemical and thermal stability. 33 In this paper, the synergistic reinforcement effect between particles and fibers is demonstrated by continuous GF with GBs co-reinforced nylon 6 (GB-GF/PA6) composites.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of the glass bead and continuous glass fibers on the low‐velocity impact resistance of nylon 6 matrix composites

Yang,

Wei,

Yin

et al. 2024

Polymer Composites

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Glass fiber‐reinforced resin matrix composites have good mechanical and impact resistance properties, while with particle co‐reinforcement, a synergistic effect can further improve their performance. In this paper, continuous glass fiber‐reinforced nylon 6 (GF/PA6) and continuous glass fiber (GF) with glass beads (GBs) co‐reinforced nylon 6 (GB–GF/PA6) were prepared to investigate the co‐reinforcement mechanism and the synergistic effect of particle and fiber. A quantitative parameter of the residual impact force divided by the critical force Pr/Pcr, as the damage degree of the low‐velocity impact, is defined to evaluate the impact resistance of the composite. The results indicate that the damage of GB–GF/PA6 was lower than that of GF/PA6, and the synergistic effect reaches the most obvious at the GB addition of 10 wt%. Scanning electron microscope (SEM) and x‐ray computed tomography (XCT) images disclose that GB impedes the type II crack spread in the matrix and fiber/matrix interface. With the type II cracks reducing, the materials' resistance to delamination can be significantly enhanced. For the composite structure, in which 10 wt% GB and 60 wt% GF are introduced, the flexural strength, shear strength, and pendulum impact strength were tested with the maximum values of 379.4 MPa, 53.1 MPa, and 219.0 J/m2, respectively. This composite structure design, presenting a continuous GF and GBs co‐reinforce effect, offers a manufacturing process that is easily scalable to achieve excellent characteristics.

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Section: Introductionmentioning

confidence: 99%

Synergistic effect of the glass bead and continuous glass fibers on the low‐velocity impact resistance of nylon 6 matrix composites

Yang,

Wei,

Yin

et al. 2024

Polymer Composites

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“…Ethene‐maleic anhydride‐glycidyl methacrylate copolymer (EMG) could increase the tensile strength of PA6/PET/GF composites [ 20 ] by about 111.2%, and ethyl acrylate‐glycidyl methacrylate copolymer (EAG) could increase the impact strength of the composites with 30 wt% GF by about 25.49%. Star‐branched PA6/glass fiber (GF/SPA6) composites exhibited excellent mechanical properties and high melt flowability than traditional GFRP materials, [ 21 ] when the GF content was up to 60 wt%, the tensile strength, Young's modulus, bending strength, and impact strength of GF/SPA6 composites was improved by about 56.35%, 123.63%, 72.40%, and 74.93%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Ultrahigh Flowability and Excellent Mechanical Performance of Glass Fiber/PA6 Composites Prepared by Hyperbranched Polymers

Yu¹,

Hu²,

Li³

et al. 2023

Macro Materials & Eng

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Lightweighting of automotives is crucial for the decrease of fuel and energy consumption, as well as CO2 emission and environmental pollution. Polymer composites, especially the high strength glass fiber/polyamide (GF/PA) composites, have great potential in lightweight; however, they have not been universally accepted due to their insufficient performance. Here, a stearate‐ended hyperbranched polyester (HBP‐12‐n) is designed and high‐performance GF/PA6 composites with high GF content are prepared. The flowability of the composites can be further increased by combining carboxyl‐ended hyperbranched polymer (HyPer C181) with HBP‐12‐n. Compared with unmodified GF/PA6 composites, the melt flow index (MFI) can be increased remarkably to 587% by adding a 0.7 wt% mixture of HBP‐12‐75 and HyPer C181, and the strength and toughness remain competitive. The simultaneous improvement in MFI and impact strength of GF/PA6 composites is the first discovery of this kind, and a synergistic mechanism of amphiphilic bridging‐deformation slipping‐interfacial strengthening of hyperbranched polymers is proposed to account for this phenomenon. This work provides a simple strategy to fabricate GF/PA6 composites with the extensive application for automotive parts and has great prospects in making automotives lightweight and reduction of CO2 emissions.

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“…Polyamide 6 (PA6) as an excellent engineering plastic that has been widely investigated and applied in automotive, electrical, packaging, and other industrial fields due to its lightweight, good mechanical properties, excellent chemical resistance, outstanding processability, and low cost [1][2][3][4][5]. With the rising demand for products in diversified markets, the single pure PA6 resin cannot meet all the requirements.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Polyamide 6 Random Copolymers Containing an Aromatic Imide Structure

Zhang

Wang

et al. 2023

Polymers

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In order to adjust the properties of polyamide 6 (PA6) and expand its application, a new strategy of introducing an aromatic imide structure into the PA6 chain through the random copolymerization method is reported. The diimide diacid monomer was first synthesized by the dehydration and cyclization of pyromellitic dianhydride and 6-aminocaproic acid before it reacted with 1,6-hexamethylene diamine to form poly(amide imide) (PAI) salt, and finally synthesized PA6/PAI random copolymers containing an aromatic imide structure by the random copolymerization of ε-caprolactam and PAI salt. The introduction of an aromatic imide structural unit into the PA6 chain could have a great influence on its properties. As the content of PAI increases, the crystallinity (Xc) and melting temperature (Tm) of the PA6/PAI random copolymer gradually decrease, but its glass transition temperature (Tg) increases obviously. When the PAI content is 20 wt%, the copolymer PA6/PAI-20 has the best comprehensive performance and not only has high thermal stabilities but also excellent mechanical properties (high strength, high modulus, and good toughness) and dielectric properties (low dielectric constant and dielectric loss). Moreover, these properties are significantly superior to those of PA6. Such high-performance PA6 random copolymers can provide great promise for the wider applications of PA6 materials.

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Thermal, morphological and mechanical properties of glass fiber reinforced star‐branched polyamide 6

Cited by 10 publications

References 28 publications

Synergistic effect of the glass bead and continuous glass fibers on the low‐velocity impact resistance of nylon 6 matrix composites

Synergistic effect of the glass bead and continuous glass fibers on the low‐velocity impact resistance of nylon 6 matrix composites

Ultrahigh Flowability and Excellent Mechanical Performance of Glass Fiber/PA6 Composites Prepared by Hyperbranched Polymers

Synthesis and Properties of Polyamide 6 Random Copolymers Containing an Aromatic Imide Structure

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