Cover Image

Gao, Ruoxiang; Chen, Hao; Hu, Zhezai; Cheng, Xuewen; Gao, Shiquan; Zhou, Shuhua; Zhao, Peng

doi:10.1002/pc.26886

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Baradi et al, [ 11,12 ] performed a study to evaluate the effect of matrix diffusion, fiber alignment, air voids, obstacles shape, and V notch factor with polybutylene‐terephthalate (PBT) material for hot weld‐lines and evaluated that a reduction of 50% ultimate tensile strength and 40% elongation at the break at weld‐line. Gao et al, [ 13 ] made a simulation algorithm based on the healing theory of flow‐front and fiber alignment for the prediction of weld‐line strength and found good agreement with experimental results at the product level. Scantamburlo et al, [ 14 ] developed a method to find out the location and size of the weld‐line in mold filling and a method to modify it.…”

Section: Introductionmentioning

confidence: 89%

Comparative study of weld‐line strength for unfilled and glass‐filled thermoplastic polyamide‐6 materials

Jadhav

Gaval

2023

Polymer Engineering & Sci

View full text Add to dashboard Cite

The injection molding process is widely accepted for the processing of engineering thermoplastics due to the ease of manufacturing complex designs. Weld‐line is a defect occurring in injection molded parts when two flow fronts join each other. At weld‐line locations, parts exhibit lower mechanical strength mainly due to inadequate intermolecular diffusion and fiber orientation anisotropy. The present work is aimed at investigating and comparing weld‐line strength for unfilled and glass‐filled polyamide‐6 materials. To achieve this, polyamide‐6 unfilled, 30% glass‐filled, and 50% glass‐filled materials are used to manufacture plaques. The special‐purpose mold is designed to obtain plaques with and without weld‐lines with help of Moldflow simulations. The specimens for tensile tests are then cut from molded plaques and experimental testing is conducted to evaluate tensile properties. Fractured surfaces of specimens are examined using a scanning electron microscope. The results demonstrated a significant drop in tensile strength and modulus for glass‐filled material weld‐line specimens when compared to specimens of no weld‐line. However, for unfilled specimens, tensile strength and modulus are almost the same for samples with and without weld‐line. A reduction in tensile strength of 13%, 49%, and 57% is observed for unfilled, 30% glass‐filled, and 50% glass‐filled polyamide‐6 material respectively.

show abstract

Section: Introductionmentioning

confidence: 89%