Effect of low-profile additives on thermo-mechanical properties of glass fiber-reinforced unsaturated polyester composites

Khoun, Loleï; Chaudhuri, Rehnooma I.; Hubert, Pascal

doi:10.1177/0731684411412643

Cited by 10 publications

(9 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…One study has shown that polyethylene glycol dimethacrylate networks modified by the addition of pre-polymerized beads of polymethyl methacrylate show significantly less shrinkage than it would have been predicted [74]. The same results have been reported for polyesters [31,32] and polystyrene modified by urethanes [37][38][39][40]. In some cases, the mechanism for shrinkage reduction has been correlated with void formation at the domain interface, which reduces the net dimensional change [74].…”

Section: Reaction Kinetics In Polymerization-induced Phase-separationsupporting

confidence: 60%

“…For example, in many applications, the control of polymerization shrinkage is crucial to the quality and longevity of the polymeric structure, such as in the molded parts and coatings industries, in electronics, and in biomedical fields. One approach that has been used for several years is the induction of phase separation by the addition of pre-polymerized additives [31,32,[72][73][74]. One study has shown that polyethylene glycol dimethacrylate networks modified by the addition of pre-polymerized beads of polymethyl methacrylate show significantly less shrinkage than it would have been predicted [74].…”

Section: Reaction Kinetics In Polymerization-induced Phase-separationmentioning

confidence: 99%

See 1 more Smart Citation

Nanostructured Multiphase Polymer Networks

Pfeifer

2014

Handbook of Nanomaterials Properties

View full text Add to dashboard Cite

Section: Reaction Kinetics In Polymerization-induced Phase-separationsupporting

confidence: 60%

Section: Reaction Kinetics In Polymerization-induced Phase-separationmentioning

confidence: 99%

Nanostructured Multiphase Polymer Networks

Pfeifer

2014

Handbook of Nanomaterials Properties

View full text Add to dashboard Cite

“…All the cured UPR specimens were prepared according to ISO 3672‐2:2000 as well as the references, and the formulation was set as 100 g resin : 1 g initiator : 0.5 g promoter. The mass ratio of LSA used in production is usually more than 30 g per 100 g UPR . In the experiment, the additions of LSAs were set at 5 g, 10 g, 15 g, 20 g, 25 g, and 30 g to control the content of LSAs within 30 g per 100 g UPR and to weaken the influences of LSAs on the properties of cured UPR.…”

Section: Methodsmentioning

confidence: 99%

Effect of succinic acid on the shrinkage of unsaturated polyester resin

Hong

Wang

Kong

et al. 2014

J of Applied Polymer Sci

View full text Add to dashboard Cite

Succinic acid was presented as a small molecule low shrinkage additive (LSA) in unsaturated polyester resin (UPR). The effects of succinic acid on the volume shrinkage and the flexural strength of UPR cured at 80 6 1 C were investigated and compared with those of macromolecule LSAs, including polyvinyl acetate (PVAc), polymethyl methacrylate (PMMA), and polystyrene (PS). The results indicated that the volume shrinkage of succinic acid/UPR specimen was significantly lower than those of specimens with macromolecule LSAs. The flexural strength of succinic acid/UPR specimen was improved. The optimal time of pre-esterification between succinic acid and the excess dihydric alcohol in UPR was 3.0 h, and the optimal addition of succinic acid was 20 g per 100 g UPR. Compared with 2,2-dimethyl malonic acid we put forward before, succinic acid was a cheaper and more commercial LSA, which obviously accelerated the pre-esterification process and presented excellent antishrinkage effect. DSC showed that with the addition of succinic acid, the polymerization of UPR was distinctive. The two-stage polymerization of UPR glue including the crosspolymerization of UPR and the homopolymerization of polyester was changed to a one-stage polymerization with lower exotherm and slower polymerization rate, which was optimal for UPR. FTIR and high resolution magic angle spinning nuclear magnetic resonance (HR/MAS NMR) were applied for the quantitative characterization of pre-esterification caused by succinic acid. Succinic acid performed better effects on the polymerization of UPR as compared to previous LSAs, and finally the homogeneous micro-structure of cured succinic acid/UPR formed and was demonstrated by SEM.

show abstract

“…These are polyvinyl acetate, polyurethane (PU), PMMA, polystyrene, and plasticizers. 34 Polystyrene is one of the most common materials used in tensile additives.…”

Section: Methodsmentioning

confidence: 99%

Investigation of adhesive wear properties of glass fiber reinforced polyester composites having different chemical compositions

Ilhan

Feyzullahoğlu

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

Glass fiber reinforced polyester composite materials are widely used in various areas due to their high specific strength, low weight, excellent elasticity, high corrosion resistance, and high thermal stability. This study aims to investigate the effects of resin materials and various fillers and wear parameters such as different loads and speeds on the tribological properties of glass fiber reinforced polyester composite materials. In this experimental study, various resins (tensile additive orthophthalic polyester and plain orthophthalic polyester), fillers (alumina and glass beads), and reinforcing materials were used during the sample preparation. The samples were subjected to an adhesive wear test at two different speeds ( n = 100 r/min and n = 200 r/min) and different loads ( F = 10 N and F = 20 N) at 150 m sliding distance. The friction coefficient and friction force were measured by the tribometer. The thickness of the wear trace was later measured and the wear rate was calculated. Wear surfaces of samples were visualized with a three-dimensional laser profilometer in order to obtain surface topographies and surface roughness values. The sample surfaces were examined by scanning electron microscopy in order to understand the wear mechanisms and to characterize the morphology of worn surfaces. Experimental results have shown that alumina or glass beads fillers can reduce the average friction coefficient when used in the correct amounts. The use of glass bead filler in orthophthalic polyester resin with tensile additive is more effective than reducing the wear rate compared to alumina filler. The load on the wear behavior of glass fiber reinforced polyester composite materials is more effective than the speed.

show abstract

Effect of low-profile additives on thermo-mechanical properties of glass fiber-reinforced unsaturated polyester composites

Cited by 10 publications

References 28 publications

Nanostructured Multiphase Polymer Networks

Nanostructured Multiphase Polymer Networks

Effect of succinic acid on the shrinkage of unsaturated polyester resin

Investigation of adhesive wear properties of glass fiber reinforced polyester composites having different chemical compositions

Contact Info

Product

Resources

About