Electron beam curing of composites

Korenev, S.

doi:10.1016/s0042-207x(00)00421-8

Cited by 24 publications

(9 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One important factor that is responsible for the decline in the structural properties of PMCs, immediately after they have been cured, is the formation of residual stresses during the manufacturing process. 10,11 Several techniques have been used to reduce the formation and development of these stresses such as optimisation of dwell temperature cycle, [12][13][14] performing electron beam curing, 15,16 using expanding monomers, 17,18 adding shape memory alloy, [19][20][21] and using fibre prestressing prior to the matrix cure. [22][23][24][25][26][27][28][29] Fibre prestressing has been proposed as a comparatively low-cost method to improve the structural performance of continuous PMCs by reducing the residual stresses within the matrix.…”

Section: Introductionmentioning

confidence: 99%

Effect of equi-biaxially fabric prestressing on the tensile performance of woven E-glass/polyester reinforced composites

Mostafa

Zahari

Sapuan

et al. 2016

Journal of Reinforced Plastics and Composites

View full text Add to dashboard Cite

The tensile properties of prestressed fabric-reinforced composites have been investigated. A method of applying an equi-biaxially fabric prestressing prior to and during the curing process of a plain-weave fabric composite was performed. A novel fibre prestressing equipment was built to apply and measure the tension load in the principal yarn directions of a fabric. The equi-biaxial fabric prestressing level, ranged from zero to 100 MPa, was used. Tensile tests were performed for the batches with different fabric prestressing levels to estimate the optimum level that gives the maximum tensile performance. The samples were also tested at different orientation angles, precisely from warp to bias direction. Prestressing the fabric enhanced the tensile performance such as elastic modulus and critical stress to first fracture of the composite by 10-20%. Most tensile properties, for instance tensile modulus and critical stress, reached their ultimate values at 50 MPa of prestressing level; however, the tensile-limited toughness was maximum at a level of fabric prestressing of ∼75 MPa.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of equi-biaxially fabric prestressing on the tensile performance of woven E-glass/polyester reinforced composites

Mostafa

Zahari

Sapuan

et al. 2016

Journal of Reinforced Plastics and Composites

View full text Add to dashboard Cite

show abstract

“…In almost all the reported epoxy nanocomposites, it contains an epoxy resin, curing agent, and nanofillers, and was made through a traditional thermal curing procedure 2–22. However, radiation curing of the epoxy resin and traditional carbon fiber composites by e‐beam has recently attracted great interest 23–34. The e‐beam curing technology provides many advantages over the traditional thermal curing processing.…”

Section: Introductionmentioning

confidence: 99%

“…An e‐beam accelerator produces ionic species, free radicals, and molecules in excited states. The advantages of the e‐beam curing technology include shorter curing time, lower shrinkage, lower tooling cost, improved performance, greater production flexibility, reduction of volatile organic compounds, elimination of the typical hazardous, and sometimes carcinogenic curing agents and is therefore more environmentally friendly 23–33. It is of great interest and significance to cure the spherical silica epoxy nanocomposites and layered‐silicate epoxy nanocomposites through e‐beam cure technology.…”

Section: Introductionmentioning

confidence: 99%

E‐beam‐cured layered‐silicate and spherical silica epoxy nanocomposites

Chen

Anderson

2007

J of Applied Polymer Sci

View full text Add to dashboard Cite

This research demonstrates that an epoxy nanocomposite can be made through electron beam (ebeam) curing. The nanofillers can be two-dimensional (layered-silicate) and zero-dimensional (spherical silica). Both the spherical silica epoxy nanocomposite and the layeredsilicate epoxy nanocomposite can be cured to a high degree of curing. The transmission electron microscopy (TEM) and small-angle X-ray scattering of the e-beamcured layered-silicate epoxy nanocomposites demonstrate the intercalated nanostructure or combination of exfoliated and intercalated nanostructure. The TEM images show that the spherical silica epoxy nanocomposite has the morphology of homogeneous dispersion of aggregates of silica nanoparticles. The aggregate size is $ 100 nm. The dynamic mechanical analysis shows that the storage modulus of the spherical silica nanocomposite has been improved, and the glass transition temperature can be very high ($ 1758C).

show abstract

“…Moreover, E‐beam curing offers the potential to fabricate large integrated structures for cryogenic fuel containments for space vehicles, thus eliminating the need for expensive autoclave processing, which also has size limitations to process such large structures. In addition, the E‐beam process could potentially be used to fabricate unique composite hybrids that could not be produced by conventional thermal fabrication processes 25–29…”

Section: Introductionmentioning

confidence: 99%

Electron‐beam curing of bismaleimide‐reactive diluent resins

Morgan

Tschen

et al. 2004

J of Applied Polymer Sci

View full text Add to dashboard Cite

Electron-beam (E-beam) curing of 4,4Ј-bismaleimidodiphenylmethane (BMPM)/BMI-1,3-tolyl/o,oЈ-diallylbisphenol A (DABPA)-based bismaleimide (BMI) systems and their mixing with various reactive diluents, such as N-vinylpyrrolidone (NVP) and styrene, were investigated to elucidate how temperature, electron-beam dosage, and diluent concentration affect the cure extent. The effect of freeradical initiator on the cure reactions was also studied. It was found that low-intensity E-beam exposures cannot cause the polymerization of BMI. High-intensity E-beam exposures give high reaction conversion attributed to a high temperature increase, which induced thermal curing. It was shown that the dilution and activation of NVP in BMI cause a more complete BMI cure reaction under E-beam radiation.BMI/NVP can be initiated easily by low-intensity E-beam without thermal curing. FTIR studies indicate that about 70% of the reaction is complete for BMI/NVP with 200 kGy dosage exposure at 10 kGy per pass. The sample temperature only reaches about 75°C. The free-radical initiator, dicumyl peroxide, can accelerate the reaction rate at the beginning of E-beam exposure, but does not affect the final reaction conversion. The increase of the concentration of NVP in the BMI/NVP systems increases the reactive conversions almost linearly.

show abstract

Electron beam curing of composites

Cited by 24 publications

References 1 publication

Effect of equi-biaxially fabric prestressing on the tensile performance of woven E-glass/polyester reinforced composites

Effect of equi-biaxially fabric prestressing on the tensile performance of woven E-glass/polyester reinforced composites

E‐beam‐cured layered‐silicate and spherical silica epoxy nanocomposites

Electron‐beam curing of bismaleimide‐reactive diluent resins

Contact Info

Product

Resources

About