Tensile Strength of Polyester Composites Reinforced with Thinner Ramie Fibers

Monteiro, Sérgio Neves; Pontes, Lucas de Almeida; Margem, Frederico Muylaert; Ferreira, Jordana; Netto, Pedro Amoy; Margem, Jean Igor

doi:10.1002/9781119263722.ch44

Cited by 1 publication

(1 citation statement)

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“…As can be seen from Figure , the thermal shrinkage rate of polyester‐ramie nonwoven decreases with the increase of fiber web quantification. This is because the larger the fiber web quantification is, the more entanglement nodes there are, and the higher the cohesive force and friction force between the polyester fiber and the ramie fiber are, the smaller the thermal shrinkage rate of polyester‐ramie nonwoven is . The variation rule between elongation at break of lining material and fiber web quantification is relatively complex, this is because the tightness of the polyester‐ramie nonwoven is increased and the fiber between the polyester and the ramie fiber is fluffy, with fiber web quantification 500 g/m 2 as the following test condition.…”

Section: Resultsmentioning

confidence: 99%

Design of pipe diameter of polyester‐ramie nonwoven lining material for pipeline rehabilitation

Zhang

Wang

et al. 2020

Polymer Composites

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In order to solve the problems of pipe diameter of polyester‐ramie nonwoven lining material used for sewage pipelines rehabilitation, the mathematical model of pipe diameter of lining material was established by using elastic mechanics method and composite piping design. The mixing ratio, the fiber web quantification and the needle‐punched density were selected to optimize the manufacturing process of polyester‐ramie nonwoven with thermal shrinkage rate and elongations at break, the results showed that the mixing ratio was 0.7, and the fiber web quantification was 600 g/m2, and the needle‐punched density was 180 thron/cm2. Under this process, the thermal shrinkage rate is 8.72%, and the elongation at break is 83%, which is close to the theoretical value, indicating that the response surface method has practical application value. Combined with the mathematical model and the optimal condition of manufacturing process, the design extremum of pipe diameter of lining material for sewage pipelines with different pipe diameters is predicted, which provides the theoretical basis for the preparation of polyester‐ramie nonwoven composites for pipeline rehabilitation.

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Section: Resultsmentioning

confidence: 99%