Physical Properties of Electron Irradiated Hybrid Epoxy Composites.

Experiments determined the radiation effects in five epoxy composites reinforced with glass, carbon, or aramide fiber. An electron beam irradiated the samples at room temperature. The composites exhibited a small improvement in mechanical strength, a significant increase in microhardness, and an increase in the glass transition temperatur..

Mechanical Interaction Between Carbon Fibers and Cement Based Matrix in Fiber Reinforced Composites.

An experiment examined the mechanical interaction between carbon fibers and cement base matrix in fiber reinforced composites. Mathematical models showed that the microstructure of the fiber/cement interface influenced the tensile strength and flexural properties of the composite. A digitally controlled MTS load frame subjected a series o..

Effect of Oxidative Embrittlement on the Impact Behavior of Nicalon Reinforced Calcium Aluminosilicate (CAS II) Ceramic Matrix Comjposites.

An experiment evaluated the effect of oxidative embrittlement on the impact behavior of Nicalon reinforced CAS II ceramic matrix composites. Tests focused on the impact resistance of samples that were loaded to a microcracking yield ratio of 1.0 and heated to 600 degrees centigrade for 10 hours. Results showed that oxidative embrittlement..

Processing and Properties of Coated HPZ Fiber Reinforced Glass/Ceramic Matrix Composites.

An experiment studied the effect of fiber coatings on the processing, microstructure, and properties of HPZ (silicon carboxynitride) fiber reinforced barium magesium aluminosilicate (BMAS) glass/ceramic matrix composites. Analysis showed that silicon carbide/boron nitride coatings influenced the interfacial bonding strength of the composi..

Car Textiles -- Current Status and Trends.

Textiles used in automobiles represent a significant percentage of the technical textiles market. Polyester and nylon are by far the most frequently used fibers in automobiles for such uses as seat covers, roof and door liners, carpet, trunk liners, and seat belts. In seat covers, a growing trend toward circular knit fabrics exists becaus..

Malimo Stitch Bonding Machines. Technical and Technological Capabilities. Part 2. Kunit and Multiknit.

Mayer's Kunit and Multiknit are the firm's most advanced stitch bonding amchines. The main elements on both types of machine are the compound needle and closing wire systems attached to horizontally moving pusher rods and bars. On the Kunit, a compound needle with a round head is used. The compound needle head is pointed on the Multiknit...

malimo Stitch Bonding Machines for Processing Textile Glass Fibers Exported to China.

Malimo Maschinenbau has sold several stitch bonding lines to China for the production of industrial glass fiber fabrics. Maliwatt and Malimo machines with glass cutting devices and a Malimo-Multiaxial machine with a glass mat feed system were installed. These machines produce structural components for building, machines, boats, surfboards..

Creating Cushioning Materials.

NHK Spring Company recently introduced a method for fabricating resilient cushioning material. The new method involves impregnating high loft polyester fibers with an aqueous polyurethane emulsion, followed by thermal during. The emulsion derives from the reaction of polyetherpolyol with toluene diisocyanate and epoxy resin at 80 degrees ..

Drift to Direct Path Crossfolding.

The introduction of high performance fibers for the production of industrial fabrics with narrow specifications has driven the manufacturers of needled nonwoven machinery to achieve higher efficiencies and capabilities in their designs. The changes that Asselin has made to its Profile crosslapper illustrates this trend. Servomotors that e..

Automation of Preform Fabrication makes Structural Reaction Injection Molding (SRIM) Viable for Volume Parts.

Developments in preform technology are increasing the viability of SRIM in the production of high volume, low cost components, particularly for the automotive sector. These developments focus on automation and the use of low cost, chopped fibers. A directed fiber process, rather than continuous strand mat thermoforming, is optimal for the..