Supertough Unsaturated Polyester and Its SMC

Tong, S. N.; Wu, Peter T. K.

doi:10.1177/073168449000900308

Cited by 12 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ers. [4][5][6][7][8] They remain as domains dispersed in the postcuring is important as it completes the resin network. The effect on mechanical propercrosslinking and removes regions with residual ties will depend on the morphology of the modifier stresses caused by the curing reaction.…”

Section: Dsc Characterization Of Cured Resins Curing Of Resins Composmentioning

confidence: 99%

“…A redox type initiator system (methyl ethyl ketone peroxide Butanox main chain has been reported recently. Tong et al [4][5][6][7] have studied the mechanical properties of M50 and cobalt octoate NL-49P) from Akzo Nobel was used for the curing reactions. unsaturated polyesters containing poly(ethylene glycol)s with number-average molecular weights ranging from 600 to 10000 g/mol.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modification of unsaturated polyesters by poly(ethylene glycol) end groups

Schulze¹,

Skrifvars²,

Reichelt³

et al. 1997

J. Appl. Polym. Sci.

View full text Add to dashboard Cite

This article reports on the modification of unsaturated polyesters by poly (ethylene glycol) end groups in order to influence the solution behavior in styrene and to modify mechanical properties of the cured resin. The synthesis was done by the reaction of a carboxyl-terminated unsaturated polyester with various poly(ethylene glycol) mono-methyl ethers of molecular weights from 350 to 2000 g/mol. The characterization and curing properties of the synthesized block copolymers are presented. The glass transition temperatures decrease with increasing length of the poly(ethylene glycol) end groups. The introduction of long poly(ethylene glycol) end groups (2000 g/ mol) leads to a phase separated and partly crystalline block copolymer with a melting point of 48ЊC. The block copolymers can be easily diluted in styrene to create the curable resins. The mixtures containing the block copolymers with the short poly(ethylene glycol) end groups (350 and 550 g/mol) could be cured in a reasonably short time. Compared to commercial unsaturated polyesters the mechanical testing revealed that the tensile strength is decreasing while the elongation is increasing.

show abstract

Section: Dsc Characterization Of Cured Resins Curing Of Resins Composmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modification of unsaturated polyesters by poly(ethylene glycol) end groups

Schulze¹,

Skrifvars²,

Reichelt³

et al. 1997

J. Appl. Polym. Sci.

View full text Add to dashboard Cite

show abstract

“…Many studies concerned the toughening of UP resins using reactive rubbers, especially liquid carboxyl-terminated copolymers of butadieneacrylonitrile (CTBN) [2][3][4][5][6][7][8], which forms a second phase when the resin is formed. The level of UP rubber toughening was studied as a function of the resin structure [3], the nature of the reactive groups [5,6], as well as the toughening method used [7].…”

mentioning

confidence: 99%

“…The level of UP rubber toughening was studied as a function of the resin structure [3], the nature of the reactive groups [5,6], as well as the toughening method used [7]. It was noticed that the UP resin with the lowest maleic acid content was the most efficiently toughened.…”

mentioning

confidence: 99%

Cyanobacterial (blue-green algal) blooms in the UK: a review of the current situation and potential management options

Howard

McDonald

Kneale

et al. 1996

Progress in Physical Geography: Earth and Environment

View full text Add to dashboard Cite

The present work investigates the effect of plasticizers on the mechanical properties of unsaturated polyester (UP) resin. After the curing behavior analysis, several compositions based on UP resin and different amounts of plasticizers are studied. The tensile strength, elastic modulus, elongation at break, impact strength, critical stress intensity factor, hardness as well as glass transition temperature are evaluated as functions of plasticizer content. The results obtained reveal that the impact resistance is maximally improved by approximately 65 and 55%, when 5 and 15 phr dioctyl phthalate (DOP) and tricresyl phosphate (TCP), respectively, are added. The enhancement is more pronounced for the critical stress intensity factor. However, a decrease in hardness and glass transition temperature, but an increase in elongation at break are noticed as expected. In general, TCP compositions exhibit better mechanical properties when compared to that containing DOP.

show abstract

Preparation and characterization of bismaleimide (N,N′‐bismaleimido‐4,4′‐diphenyl methane)–vinyl ester oligomer–modified unsaturated polyester interpenetrating matrices for advanced composites

Dinakaran

Alagar

2002

J of Applied Polymer Sci

View full text Add to dashboard Cite

ABSTRACT:Interpenetrating networks of varying percentages of bismaleimide (BMI) in vinyl ester oligomer (VEO) modified unsaturated polyester (UP) matrices have been developed. Vinyl ester oligomer was prepared by reacting commercially available epoxy resin GY 250 (CibaGeigy) and acrylic acid, and used as a toughening agent for unsaturated polyester resin. Unsaturated polyesters modified with 10, 20, and 30 wt % vinyl ester oligomer were made. The VEO toughened unsaturated polyester matrix systems, further modified with 5, 10, and 15 wt % bismaleimide (BMI). BMI-VEO-UP matrices were characterized using differential scanning calorimetry, thermogravimetric analysis, and heat deflection temperature analysis. The matrices, in the form of castings, were characterized for their mechanical properties according to ASTM methods: tensile strength, flexural strength, and unnotched Izod impact test. Data obtained from mechanical studies and thermal characterization indicate that the introduction of VEO and BMI into unsaturated polyester resin improves thermomechanical properties according to their percentage concentration.

show abstract

Supertough Unsaturated Polyester and Its SMC

Cited by 12 publications

References 1 publication

Modification of unsaturated polyesters by poly(ethylene glycol) end groups

Modification of unsaturated polyesters by poly(ethylene glycol) end groups

Cyanobacterial (blue-green algal) blooms in the UK: a review of the current situation and potential management options

Preparation and characterization of bismaleimide (N,N′‐bismaleimido‐4,4′‐diphenyl methane)–vinyl ester oligomer–modified unsaturated polyester interpenetrating matrices for advanced composites

Contact Info

Product

Resources

About