Basalt Fiber Composite Reinforcement for Concrete.

Research on basalt fiber composite reinforcement for concrete performed a feasibility study on the use of rebars manufactured from braided basalt fiber strands as concrete reinforcement. Manufacture of the basalt fibers used a process developed in the Ukraine. Continuous basalt fibers with 9-15 micron diameters were optimal for rebar manu..

Low-Molecular Weight Epoxy-Bisphenol Resins.

Researchers used a two step procedure to prepare title resins. The procedure involved adding bisphenol A to epichlorohydrin over the catalysts chlorocholine chloride and Ca(0H)(2) at 55-65 degrees centigrade until the phenol's OH was converted at > 90 percent and dehydrochlorinating byproducts and beta-chlorohydrin by driving off the exce..

Study of damage evolution in composites using damage mechanics and micromechanics

A numerical modeling technique was presented to simulate, predict and evaluate progressive damage or failure in a composite structure subjected to an external loading. To this end, a micro/macromechanical approach was proposed along with damage mechanics at the microlevel. The micro/macromechanical model utilized both the macromechanical ..

Carpet recycling technologies

It is estimated that over three billion pounds of post-consumer carpet waste enter landifills in the United States each year. Methods of component separation, chemical approaches to separation, melt processing techniques and the formation of composite products from the recovered waste are described. A process for producing energy from car..

Composite fabrics from flax (German)

The production of stitch-bonded fabrics, for earthwork stabilisation, from flax using maliwatt and Multiknit technology is described. Following an outline of the use of flax, hemp and jute fibres in stitch-bonding, examples are presented to single-layer and multilayer fabrics produced using both technologies. Enduses for these fabrics are..

Engineering the evolution: laminated press fabrics

Innovations in papermaking technology drive manufacturers of paper machine clothing to develop new products. In trying to keep pace with faster paper machine speeds and increased productivity, press-fabric designers are shouldering greater responsibility for improved sheet quality from both their publicationgrade and kraft-paper customers..

Survey of NIR Technology.

Researchers developed viable approaches for measuring cotton fiber quality parameters using rapid, nondestructive techniques. Instruments studied included near infrared reflectance (NIR) instruments, offered as options by such high volume instrument (HVI)

Generation of a polyolefin fiber with higher tenacity by favourable blending

Melt spinning of a poly-(ethylene-octene)-copolymer with elastomeric properties shows that this material is also a melt spinnable polymer. The mechanical properties obtained for the spun fibers are similar to those of an elastance yarn and are only influenced by variation of the spinning conditions. This however is not acceptable for text..

Effect of water and acrylonitrile on apparent melting behavior of polyacrylonitrile copolymer (Japanese)

The effect of water and acrylonitrile (AN) on apparent melting temperature of acrylonitrile/methylacrylate copolymer (PAN) wa investigated. Apparent melting temperature of PAN decresed with increasing water content and saturated at 150℃, at which water content was 25 wt％ to PAN. The water content corresponded to the molar ratio between ..

Pervaporation dehydration of organic liquids using composite membranes based on carboxymethylcellulose

In order to obtain dehydration pervaporation membranes easily carboxymethylcellulose (CMC)/poly (vinyl alcohol) (PVA) composite membranes were prepared by casting CMC (Na )/PVA blended solutions on polyester nonwoven fabrics and then removing the solvent.