Rubber binder

Long fiber material with synthetic rubber binder suitable for service conditions, or spiral wound stainless steel and equal gasket material... 

Some of the unusual properties of a solid propellant results from its basic composition. The two general categories of double-base and composite rubber binder propellants have many subcategories, but no exhaustive compilation will be attempted here. Most modem propellants consist of a deformable binder phase and a crystalline salt filler, such as ammonium perchlorate and usually a powdered metallic fuel such as aluminum. Table I gives some typical compositions for both composite rubber-based and composite double-base systems. 

Proplnt consisting of an oxidizer (AN), stabilized rubber binder, a salt of Picric or Styphnic acid and a burning rate catalyst (Na dichromate or Cu chromate)] U)H.M. 

Propellants include both rocket and gun propellants. Most rocket propellants are either Hazard Class 1.3 composites, which are based on a rubber binder, and ammonium perchlorate (AP) oxidizer, and a powdered aluminum (Al) fuel or Hazard Class 1.1 composites, which are based on a nitrate ester, usually nitroglycerine (NG), nitrocellulose (NC), HMX, AP, or polymer-bound NC. If a binder is used, it usually is an isocyanate-cured polyester or polyether. Some propellants contain combustion modifiers, such as lead oxide. 

The evaluation of combustion performance and safety of Mg/polytetrafluroethylene (PTFE) pyrotechnic compositions by means of TG-DTA has been reported by Miyake and co-workers [83]. Similar work on different pyrotechnic systems containing a chlorinated rubber binder has made use of TG-DSC and TG-DTA-MS [59-62], The hyphenated technique TG-DTA (DSC) has recently been reviewed [56]. 

Interface in Plastic Propellant , Tech Rept No 10, Waltham Abbey (Engl) (1969) I O) R P. Rastogi K. Kishore, Polymers as Fuel Binders in Composite Solid Propellants , JSciIndRes 32 (6), 282-99 (1973) CA71,121565 (1973) 11) C.E. Bartley R.L. Settlemire, Solid Propellant with Butyl Rubber Binder , USP 3932242 (1976) CA 84, 108011 (1976)... 

Hazard Class 1.3 composites, which are based on a rubber binder, an ammonium perchlorate (AP) oxidizer, and a powdered aluminum (Al) fuel or... 

Potapov, Yu., Borisov,Yu.,BarabashD., and Makarova I., affective Building Composites Based on Rubber Binders, Voronezh, 2000 (in Russian). 

The lowest power expense and maximum homogeneity of the mix can be attained by optimum agitation of the rubber binder, fillers, and reinforcing fibers with the Brabender plastograph mixer. Such mixers allow estimation of the technological properties of rubber compositions based on viscous resistance, which in turn depends on duration of mechanical effects and temperatures. 

The superficial phenomena of physical-chemical interaction of the liquid and solid phases and formation of the composite material microstructures proceed most intensively during rubber binder preparation. Therefore, the conditions under which the binder is prepared exert essential influence on the properties of composites. Uniformity of the prepared binder is defined by the intensity of the agitation process and depends on the process s speed and duration. 

Knowing the optimal value of specific power inputs makes it possible to define the modes of liquid rubber binder preparation. 

Another way of reducing the temperature of vulcanization of rubber binder is regulation of the micro structure and viscosity of the dienic oligomer. We know that liquid dienic rubbers are the macromolecules of oligomers withl,4-cis-, 1,4-trans-, and 1,2-vinyl- links with viscosities from 0.4 up to 10 Pac. It was found experimentally that production of cold-cured RubCon is possible if the content of 1,4-cis- links in a macromolecule of rubber is more than 65%, and the viscosity of the polymer is more than 17 Pa c. Increasing the viscosity of rubber up to 7 Pa c leads to lowering of the structurization temperature from 125°C to 60°C. 

Ryblev, I., Blank, N., and Figovsky, O. Polymer Compositions Based on Epoxy-Rubber Binders, Building Materials no. 6 (1978) 37-39 (in Russian). 

The modified binder is commonly referred to as asphalt-rubber Asphalt-rubber binders are used primarily in hot mix asphalt paving, but are also used in seal coat applications as a stress absorbing membrane (SAM), a stress absorbing membrane interlayer (SAMI), or as a membrane sealant without any aggregate... 

Uses Chemical intermediate for surfactants, ethers, esters antifoam in fermentation, paints, ceramics, rubber binder and lubricant for ceramics metalworking lubricants textile lubricant plasticizer for plastics, resin-treated papers antiblooming agent for pentachlorophenol-treated wood hydraulic fluids dyeing latex coagulant emollient, solvent in cosmetics defoamer for food-grade coatings and paper prods. boiler water additive (food contact) in food-pkg. adhesives Features provides low odor, low irritation, low toxicity to personal care prods. ... 

Uses Mold release agent and antistat for rubber binder intermediate for copolymers, PEG esters cosmetics pharmaceutical binder, suppository base thickener for inks... 

Zinc-rich coatings can be classified as organic or inorganic. The organic zinc-riches have organic binders, with polyamide epoxies and chlorinated rubber binders being the most common. Other types such as urethane zinc-rich are also available. These latter coatings are more easily applied than the other zinc-rich... 

Zinc-rich coatings are subdivided as organic or inorganic. The organic zinc-rich coatings have organic binders such as polamide epoxies, chlorinated rubber binders, and urethane binders. 

However, rubbers other than "natural" were also briefly tested and could be used wherever natural rubber is not available, although higher in cost. Alternate rubber binder resins tested included ... 

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