Silicone—nylon 6,6 composites

Changes in the crystallization behavior of the thermoplastic phase of the IPN have been observed in DSC (differential scanning calorimetry) experiments (i3). In Figure 7, a series of DSC scans on silicone-nylon 6,6 composites of various silicone contents are presented. The characteristic melt peak of the nylon matrix is observed in all of the thermograms, but a second, slightly lower temperature melt peak becomes more pronounced as the concentration or the cross-link density of silicone polymer in the IPN is... 

The silicone-thermoplastic IPN composites exhibit superior mechanical properties (Table IV), and the network structure of the silicone prevents migration. The value of the IPN has been demonstrated in a molded journal bearing for use in high-speed paper-handling equipment. For example, part wear was reduced to a greater extent in a PTFE-lubricated, silicone-nylon... 

General surgery Skin repair template Sutures Adhesives and sealants Silicone-collagen composite Silk, nylon, poly(glycolide-co-lactide) Cyanoacrylate, fibrin... 

Chorvath I et al. (2002) Thermoplastic elastomer compositions containing silicone rubber and nylon resins and the dynamically vulcanizing method. US Patent... 

The material of the plant has to be resistant to H2O2, which is proven for stainless steel, aluminum, silicon, Viton, and Teflon. Not all compositions of polyurethane and Plexiglas are resistant. Nylon is not resistant [36]. 

The combination of an adhesive and adherend is a laminate. Commercial laminates are produced on a large scale with wood as the adherend and phenolic, urea, epoxy, resorcinol, or polyester resins as the adhesives. Many wood laminates are called plywood. Laminates of paper or textile include items under the trade names of Formica and Micarta. Laminates of phenolic, nylon, or silicone resins with cotton, asbestos, paper, or glass textile are used as mechanical, electrical, and general purpose structural materials. Composites of fibrous glass, mat or sheet, and epoxy or polyester resins are widely employed as reinforced plastic (FRP) structures. 

Reinforced plastics are composites in which a resin is combined with a reinforcing agent to improve one or more properties of the resin matrix. The resin may be either thermosetting or thermoplastic. Typical thermosetting resins used in RPs include unsaturated polyester, epoxy, phenolic, melamine, silicone, alkyd, and diallyl phthalate. In the field of reinforced thermoplastics (RTFs), virtually every type of thermoplastic material can be, and has been, reinforced and commercially molded. The more popular grades include nylon, polystyrene, polycarbonate, polyporpylene, polyethylene, acetal, PVC, ABS, styrene-acrylonitrile, polysulfone, polyphenylene sulfide, and thermoplastic polyesters. 

To summarize the points discussed, silicone rubbers are innovative. An example of this are inserts in LSR showerheads which do not become blocked and can be produced cost-effectively in the injection-molding process as composite elements with thermoplastic nylon 6.6 30 % glass fiber. Silicone rubbers, however, are also high performance, and this is evident particularly in the many applications where they have been used for years at high temperatures, for exsample seals in irons or other domestic appliances. And not least, silicone rubbers are also efficient. An example of this molds for prototyping without which cost-effective production of individual items would not in fact be possible. 

This is a fruitful area for specially developed formulations which combine lubricity with good creep and temperature resistance. The Audi 80 gear shift mechanism is composed of two snap-fitted components in a nylon-based composite containing PTFE and silicone as well as glass fibre in another case an actuator tube in reinforced PPS moves in contact with the PEI housing for an automatic gear shift. (Both these examples feature formulations from the LNP Company.)... 

Ducts and Canals.—Prostheses implanted in the urinary tract have been discussed with reference to the use or potential use of poly(ethylene terephthalate), silicone rubber, polytetrafluoroethylene, poly(vinyl chloride) and nylon. Experimental work on uretral and urethral replacement involves, principally, composites of poly(ethylene terephthalate) and silicone rubber. A new silicone rubber prosthetic bladder is described and a preliminary report of an implantable lung in J. H. Dumbleton, Wear, 1978, 49, 297. 

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