Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Materials rubber

An extensive new Section 10 is devoted to polymers, rubbers, fats, oils, and waxes. A discussion of polymers and rubbers is followed by the formulas and key properties of plastic materials. Eor each member and type of the plastic families there is a tabulation of their physical, electrical, mechanical, and thermal properties and characteristics. A similar treatment is accorded the various types of rubber materials. Chemical resistance and gas permeability constants are also given for rubbers and plastics. The section concludes with various constants of fats, oils, and waxes. [Pg.1287]

H. Witt, Overview of the Finate Element Method with Emphasis on Applications to Rubber Materials, at the ACS Meeting of the 147th Rubber Division, Philadelphia, Pa., May 2—5, 1995, American Chemical Society, Washington, D.C. [Pg.263]

Withdrawn) 1974 AMD 1 Laboratory methods of test for determination of smoke generation charactenstics of cellular plastics and cellular rubber materials. Part 1 Method for testing a 25 mm cube test specimen of low density material (up to 130 kg/metres cubed) to continuous flaming conditions (AMD 7688) dated 15 July 1993. Withdrawn, superseded by BS ISO 5659-2 1994... [Pg.588]

Withdrawn) 1974 AMD 1 Laboratory methods of test for determination of smoke generation charactenstics of cellular plastics and cellular rubber materials. Superseded by BS ISO 5659-2 1994... [Pg.588]

Natural rubber can be obtained from the sap of a number of plants and trees, the most common source is the Hevea brasiliensis tree. Although natural rubber was known in Central and South America before the arrival of Christopher Columbus in 1492, the first use as an adhesive was established in a patent dated in 1891. As rubber became an important part of the industrial revolution, the rubber adhesives market grew in importance. To comply with the increasing demand on natural rubber materials, plantations of Hevea brasiliensis trees were established in southeast Asia in the early 20th Century, mainly to supply the demand from the automobile industry. [Pg.581]

On the other hand, rubbers are exposed to repeated mechanical flexing and deformation in service. Previous studies [55] have shown that flex cracking of rubber materials is accelerated by the presence of oxygen. Environmental flex cracking is caused by oxidative chain scission of the rubber polymer at mechanically induced cracks. [Pg.642]

Plastic elastomers are generally lower-modulus flexible materials that can be stretched repeatedly and will return to their approximate original length when the stresses are released. The rubber materials have been around for over a century. They will always be required to meet certain desired properties, but thermoplastic TPEs are replacing traditional TS natural and synthetic rubbers (elastomers). TPEs are also... [Pg.360]

Handbook of elastomers , A.K. Bhowmick and H.L. Stephens Marcel Dekker (1988) Series Plastics Engineering, Volume 19 ISBN 0824778006. This handbook systematically addresses the manufacturing techniques, properties, processing, and applications of rubbers and rubber-like materials. The Handbook of Elastomers provides authoritative information on natural rubbers, synthetic rubbers, liquid rubbers, powdered rubbers, rubber blends, thermoplastic elastomers, and rubber-based composites— offering solutions to many practical problems encountered with rubber materials. [Pg.601]

Yerina, N. and Magonov, S., Atomic force microscopy in analysis of rubber materials. Rubber Chem. Technol., 76, 846, 2003. [Pg.577]

Bemabeu-Gonzalvez A., Pastor-Bias M.M., and Martm-Martmez J.M., 1998, Modified adhesion of rubber materials by surface migration of wax and zinc stearate, in Proceedings of the World Polymer Congress, 37th International Symposium on Macromolecules MACRO 98, Gold Coast, Australia, 705. Romero-Sanchez M.D., Pastor-Bias M.M., and Martm-Martmez J.M., 2001, Adhesion improvement of SBR rubber by treatment with trichloroisocyanuric acid solutions in different esters, Int. J. Adhes. Adhes., 21, 325-337. [Pg.772]

Navarro-Bandn M.V., Pastor-Bias M.M., and Martln-Martfnez J.M., 15-18 February 2004, Water based halogenation for rubber materials, in Proceedings of the 27th Adhesion Society, Wilmington, NC. [Pg.772]

Above a critical hller concentration, the percolation threshold, the properties of the reinforced rubber material change drastically, because a hller-hUer network is estabhshed. This results, for example, in an overproportional increase of electrical conductivity of a carbon black-hUed compound. The continuous disruption and restorahon of this hller network upon deformation is well visible in the so-called Payne effect [20,21], as represented in Figure 29.5. It illustrates the strain-dependence of the modulus and the strain-independent contributions to the complex shear or tensUe moduli for carbon black-hlled compounds and sUica-hUed compounds. [Pg.805]

A migration test was developed to simulate human exposure patterns. 5 g of rubber material was cut into 1-2 mm stripes and then immersed in 20 ml of standard test solution of artificial saliva (4.2 g NaHC03, 0.2 g K2CO3, 0.5 g NaCl, 0.03 g NaNO, ad 1000 ml with aqua dest.j. After 24 h incubation at 40 C volatile nitrosamines were determined in an aliquot and determined after destination with a standard technique (GC-TEA-method). [Pg.221]

Much of this work does not represent current practice particularly with regard to the stationary phases. The analysis of AOs and vulcanisation accelerators in rubber materials by GC, HPLC and TLC was reviewed... [Pg.197]

X-ray fluorescence analysis is a nondestructive method to analyze rubber materials qualitatively and quantitatively. It is used for the identification as well as for the determination of the concentration of all elements from fluorine through the remainder of the periodic table in their various combinations. X-rays of high intensity irradiate the solid, powder, or liquid specimen. Hence, the elements in the specimen emit X-ray fluorescence radiation of wavelengths characteristic to each element. By reflection from an analyzing crystal, this radiation is dispersed into characteristic spectral lines. The position and intensity of these lines are measured. [Pg.600]

Analysis of inorganic fillers in plastics and rubber materials is normally accomplished by ashing material in a muffle furnace at a temperature of 550°C. An IR spectrum of the resulting ash, sometimes as a paraffin oil mull is then obtained to identify the filler type. Examination of the ash by XRF and/or X-ray diffraction can also provide useful information to help identify complex systems. [Pg.588]

BS 4735. Assessment of Horizontal Burning Characteristics of Small Specimens of Cellular Plastics and Cellular Rubber Material When Subjected to a Small Flame, BSI, London. [Pg.518]

C. Andersson, Lifespan of Rubber Materials and Thermoplastic Elastomers in Air, Water and Oil, The Swedish Institute for Fibre and Polymer Research, Molndal, 1999. [Pg.79]

ISO 6252 1992 Plastics - Determination of environmental stress cracking (ESC) -Constant-tensile-stress method ISO/TR 7620 1986 Rubber materials - Chemical resistance... [Pg.178]

Polymer products Adhesives, adhesive tapes, sealants, latex emulsions, rubber materials, plastic fabrication, etc. Composition monitoring Rate of cure monitoring Product QC... [Pg.190]

Polymeric materials, along with several other chemical industrial products, contribute positively to the balance of trade (Table 1.12). In fact, plastics and resins show the greatest value increase of exports minus imports with over 12 billion net favoring exports. The polymer-intense materials numbers are higher than noted in Table 1.12 since fiber and rubber materials are absent as a separate entry. Even so, the figures demonstrate the positive role polymers play in our balance of trade situation. [Pg.753]

Buna-N This nitrile rubber material has been used extensively in automatic transmissions. It is compatible with most petroleum products, can be formed into a variety of shapes, and is economical. It is useful at temperatures ranging from -40°F to 230°F (-40°C to 110°C). It has excellent resistance to swelling and softening at higher temperatures. [Pg.341]

As illustrated in Figure 10.2, many composite applications utilize a caul plate or pressure intensifier. Caul plates result in a greatly improved part surface finish compared with a bag surface, improved dimensional control, and improved radius quality. Caul plates are also used to reduce ply movement during processing of honeycomb reinforced parts. Caul plates may be semi-rigid or rigid in nature. Semi-rigid caul plates, which are the most common type, are typically constructed of thin metal, composite, or rubber materials so they are flexible in... [Pg.303]


See other pages where Materials rubber is mentioned: [Pg.92]    [Pg.209]    [Pg.239]    [Pg.644]    [Pg.864]    [Pg.49]    [Pg.396]    [Pg.564]    [Pg.574]    [Pg.576]    [Pg.607]    [Pg.771]    [Pg.819]    [Pg.823]    [Pg.221]    [Pg.65]    [Pg.715]    [Pg.461]    [Pg.572]    [Pg.615]    [Pg.215]    [Pg.20]    [Pg.558]   
See also in sourсe #XX -- [ Pg.177 , Pg.389 , Pg.393 ]




SEARCH



Assessing the safety of rubber as a food contact material

Carbon black reinforcing rubber material

Coating materials rubber

Container materials rubber

Glass transition temperature rubber materials

Good Practice for Unbound Applications of Tyre-derived Rubber Materials in Sensitive Environments - UK WRAP Quality Protocol

Important Basic Raw Materials for Rubber

Improving the safety of rubber as a food contact material

Injection silicon rubber material

Iron, Bronze, Steel, Synthetic Resin and Rubber Pump Materials—ITT Jabsco

Materials, tire rubber compounding

Molding materials rubber-toughened acrylic

Natural materials rubber

Natural rubber nanocomposites materials

Photoacoustic Fourier Transform Infrared Spectroscopy of Rubbers and Related Materials

Plasma-Chemical Treatment of Plastics, Rubber Materials, and Special Polymer Films

Raw Materials for Rubber Lining

Regulation and the use of rubber as a food contact material

Rubber and Rubberlike Materials

Rubber crystalline material

Rubber lining materials

Rubber lining materials selection

Rubber material filler reinforcement

Rubber material styrene-butadiene matrix

Rubber materials additives

Rubber materials cure

Rubber materials degradation/aging

Rubber materials dynamic functions

Rubber materials formulation

Rubber materials latex allergy

Rubber materials testing

Rubber materials treatment

Rubber materials viscoelasticity

Rubber modified acrylic materials

Rubber polymer material

Rubber roofing material

Rubber-like materials

Rubber-like materials, definition

Rubber-like materials, viscoelastic losses

Rubber-toughened epoxy adhesives material properties

Subject rubber/polymer materials

Textile Reinforcing Materials and Their Adhesive Systems Used in Rubber

Thermoset elastomers rubber-like materials

Vital Basic Raw Materials for Rubber

© 2024 chempedia.info