Obtaining alkali glass fiber on the basis of volcanic tuff and pumice sand

1963 ◽  
Vol 20 (9) ◽  
pp. 479-481 ◽  
Author(s):  
M. G. Manvelyan ◽  
K. G. Kalamkaryan ◽  
S. G. Malkhasyan ◽  
I. A. Vardanyan ◽  
B. I. Finkel'shtein
Keyword(s):  
Glass Fiber ◽  
Volcanic Tuff ◽  
Alkali Glass ◽  
Pumice Sand

Alkali glass for the production of continuous glass fiber

1973 ◽  
Vol 30 (1) ◽  
pp. 41-43
Author(s):  
Yu. I. Kolesov ◽  
A. I. Kolesova
Keyword(s):  
Glass Fiber ◽  
Continuous Glass ◽  
Continuous Glass Fiber ◽  
Alkali Glass

Chemical recycling of fiber-reinforced epoxy resin using a polyethylene glycol/NaOH system

2014 ◽  
Vol 33 (22) ◽  
pp. 2106-2114 ◽  
Author(s):  
Peng Yang ◽  
Qian Zhou ◽  
Xiao-Yang Li ◽  
Ke-Ke Yang ◽  
Yu-Zhong Wang
Keyword(s):  
Polyethylene Glycol ◽  
Glass Fiber ◽  
Epoxy Resin ◽  
Carbon Fibers ◽  
Photoelectron Spectroscopy ◽  
Glass Fibers ◽  
Chemical Recycling ◽  
X Ray ◽  
Alkali Glass ◽  
Original Strength

A polyethylene glycol/ NaOH system has been used for chemical recycling of fiber/epoxy resin composites. Solvolysis of the composites based on different fibers, i.e. two PAN-based carbon fibers (Torry T300, T700S) and two glass fibers (non-alkali glass fiber and medium-alkali glass fiber), have been compared. The solubilization degree increases with rising reaction temperature, reaction time, as well as NaOH amount. After reacting at atmospheric pressure for 4 h at 200℃ with 0.1 g NaOH/g composite, a high decomposition efficiency of 84.1–93.0% has been obtained. Scanning electron microscopy analysis shows that the two recovered carbon fibers and the non-alkali glass fiber have a texture similar to the as-received fibers, except that some residual resin adheres to the surface, while the medium-alkali glass fiber is damaged during recycling. Accordingly, the recycled carbon fibers and the non-alkali glass fiber retain 94–96% of their original strength, while the tensile strength of the recycled medium-alkali glass fiber decreases to below 90% of this value. The two carbon fibers were further characterized using X-ray photoelectron spectroscopy and X-ray diffraction. The carbon structure is slightly oxidized and the degree of graphitization of the recovered carbon fibers slightly decreases.

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