Durability study of a ramie-fiber reinforced phenolic composite subjected to water immersion

Wang, Hongguang; Xian, Guijun; Li, Hui; Sui, Lili

doi:10.1007/s12221-014-1029-7

Cited by 29 publications

(7 citation statements)

References 28 publications

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“…8c, 8f), large amounts of matrix are still attached to the fibres of unaged composites, however, in the case of aged composites, the fibres appear to have a smooth surface and the amount of resin attached on the surface of the fibre has been reduced. This phenomenon indicates a poor fibre-matrix interfacial bonding after ageing and therefore, fractures occur at the fibre-matrix interface leading to the reduction of the flexural properties of composites [16,27].…”

Section: Composite Microstructurementioning

confidence: 99%

Improving moisture durability of flax fibre composites by using non-dry fibres

Vuure

2019

Composites Part A: Applied Science and Manufacturing

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Non-dry flax fibre and polyester resin that has low sensitivity to moisture were used in the production of composites and the effects on flexural and moisture sorption properties of composites under wet-dry cycling were determined. Results showed that composites made of non-dry fibre have lower moisture sorption and degree of swelling and shrinking compared to composites made of dried fibre. Mean strength and modulus of composites made of non-dry fibre are 4-12% and 13-14% respectively, higher than composites made of dried fibre in longitudinal direction. Mean strength and modulus of composites made of non-dry fibre are 18-22% and 11-21% respectively, higher than composites made of dried fibre in transverse direction after the wet-dry cycling. The results suggest that composites made of non-dry fibre could be used for enhancing moisture durability of composites and lessen the time, cost and embodied energy to produce the composites, by omitting the step of drying the fibres.

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Section: Composite Microstructurementioning

confidence: 99%

Improving moisture durability of flax fibre composites by using non-dry fibres

Vuure

2019

Composites Part A: Applied Science and Manufacturing

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“…Ramie is valued primarily for its long, strong phloem (i.e., bast) fibers, which are used in textiles, most often as a blend with other types of fibers. There is also growing interest in other uses of the fibers, such as in composite materials [2]. Ramie fibers have similar properties to other commercial bast fibers [3,4].…”

Section: Introductionmentioning

confidence: 99%

Transcriptome Assembly of the Bast Fiber Crop, Ramie, Boehmeria nivea (L.) Gaud. (Urticaceae)

Al-Ani

Deyholos

2018

Fibers

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Ramie (Boehmeria nivea) is a perennial crop valued for its strong bast fibers. Unlike other major bast fiber crops, ramie fiber processing does not include retting, but does require degumming, suggesting distinctive features in pectin and the development and composition of fibers. A comprehensive transcriptome assembly of ramie has not been made available, to date. We obtained the sequence of RNA transcripts (RNA Seq) from the apical region of developing ramie stems and combined these with reads from public databases for a total of 157,621,051 paired-end reads (30.3 billion base pairs Gbp) used as input for de novo assembly, resulting in 70,721 scaffolds (≥200 base pairs (bp); N 50 = 1798 bp). As evidence of the quality of the assembly, 36,535 scaffolds aligned to at least one Arabidopsis protein (BLASTP e-value ≤ 10 −10 ). The resource described here for B. nivea will facilitate an improved understanding of bast fibers, cell wall, and middle lamella development in this and other comparative species.

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“…and water molecules, polymer macromolecular chains are hydrolyzed and broken, deteriorating PCFC specimens. ( 3) Softening with swelling-free volume inside PCFC is the basis for free movement and rotation of polymer molecular chains to change their conformations [34]. Increased water immersion reduces the free volume inside the PCFC.…”

Section: Discussionmentioning

confidence: 99%

Tensile and Fixed Elongation Properties of Polymer-Based Cement Flexible Composite under Water/Corrosive Solution Environment

Bai

Liu

et al. 2020

Materials

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This study examined the tensile and fixed elongation properties of flexible composite made of styrene–acrylic, vinyl acetate-ethylene copolymer emulsion (VAE emulsion), and cement as cementitious material for airport pavement joint sealant. Quantitative analysis of the elastic recovery ratio and a series of specimen tensile indicators after water immersion, drying–wetting cycles, and corrosive solution (H2SO4, NaOH, and jet fuel) immersion were performed. Results showed excellent polymer-based cement flexible composite (PCFC) resistance against water and corrosive solution erosion, such as failure mode, elastic recovery, tensile strength, and energy absorption. When the level of water/corrosive solution erosion (immersion time, cycles) were increased, the tensile and fixed elongation properties progressively decreased. Specimens retained more than 60% elastic recovery ratio after water/corrosive solution erosion immersion for 30 days. According to erosion testing as per immersion time in corrosive solution, jet fuel had the maximum effect, NaOH solution had the least effect, and H2SO4 solution had an intermediary effect. At immersion time in the range of 1–30 days, the tensile strength does not change by more than 0.07 MPa. Within the limits of the fixed elongation tests, cohesive failure occurred after jet fuel immersion for 30 days, adhesive failure occurred after H2SO4 solution immersion for 30 days but was normal in other cases.

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Durability study of a ramie-fiber reinforced phenolic composite subjected to water immersion

Cited by 29 publications

References 28 publications

Improving moisture durability of flax fibre composites by using non-dry fibres

Improving moisture durability of flax fibre composites by using non-dry fibres

Transcriptome Assembly of the Bast Fiber Crop, Ramie, Boehmeria nivea (L.) Gaud. (Urticaceae)

Tensile and Fixed Elongation Properties of Polymer-Based Cement Flexible Composite under Water/Corrosive Solution Environment

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