Engineering plastics lubricants

Fluorinated rubbers, copolymers of hexafluoropropylene and vinylidene-fluorides, have excellent resistance to oils, fuels and lubricants at temperatures up to 200°C. They have better resistance to aliphatic, aromatic and chlorinated hydrocarbons and most mineral acids than other rubbers, but their high cost restricts their engineering applications. Cheremisinoff et al. [54] provide extensive physical and mechanical properties data on engineering plastics. A glossary of terms concerned with fabrication and properties of plastics is given in the last section of this chapter. 

DSM Engineering Plastics, nylon, PBT, Polycarbonate Thermoplastic Elastomer PC/ABS Conductive Resins Thermoplastics Reinforced and Filled Thermoplastics Lubricated... 

Polyethers. Acetal Resins. These stabilized polyoxymethy-lenes were introduced dramatically by DuPont and Celanese as engineering plastics to replace non-ferrous metals. Good mechanical strength, resilience, fatigue-resistance, lubricity, abrasion-resistance, heat distortion temperature, water and solvent-resistance can approach the behavior of metals on a volume basis, while processability, color possibilities, and corrosion-resistance are superior. Major weakness is sensitivity to thermal, oxidative, and ionic degradation. 

Mustard agents Lubricant additives ballpoint pen ink manufacture of plastics, paper and rubber photographic developing solutions, textile dyes, pesticides, chlorinating agents, engineering plastics, cosmetics, detergents, pharmaceuticals, insecticides, waxes and polishes, toiletries, cement additives, resins. 

Maleic anhydride is an important intermediate in the chemical industry [8-9]. It is used in polycondensation and addition reactions. The end products of these reactions are polyesters, alkyd resins, lacquers, plasticizers, copolymers and lubricants. For example, the copolymer of styrene and maleic anhydride is an engineering plastic. 

War I (35). Although the entire castor plant is poisonous, the seeds contain the highest concentration of ricin (36). For hundreds of years, countries all over the world have cultivated the plant for its oil, specifically for use as a laxative and for lubrication. Castor oil has many industrial and commercial uses, having served as a lubricant for racing engines (Castrol-R racing motor oil) and as an additive in paints and varnishes. One of its derivatives, sebacic acid, is a component in the production of nylon and aUcyd resins, and contributes to the manufacture of plasticizers, lubricants, diffusion pump oils, cosmetics, and candles (35). India is currently the world leader in production, followed by China and Brazil (35). 

Ekonol [Carborundum]. TM for an engineering plastic composed of poly-p-oxybenzoate. Resistant to temperatures above 600C, self-lubricating surface. 

In the polymer engineering we call compounds those intimate solid mixtures in which the technical polymer material for a specific application contains all the necessary additives -e.g. plasticizers, lubricants, impact modifiers, heat stabilizers, antioxidants, flame retardants, colorants, etc. — making the material suitable for the given task. A typical PVC compound e g. for a window profile, consists of 8 - 10 components [4],... 

Apscom. [Akzo Engineering Plastics BV] Spe ty com. for conductiv-i, lubrication, flame retardance, reinforcement for polymers. 

Celanese Njdon. [Hoechst Celanese/ Engineering Plastics Hoechst UK] Nylon 6/6 resins, some glass-iein-fruced, heat-stabili d, lubricated for inj. molding and extrusion of mech. parts, gears, bearings, hardware, automotive parts, mcmofilaments. 

Electrafil . [Akzo Engineering Plastics] PPO, nylon, ABS, PBT, PET, PPE, PC, PP, PE, PS, aceud, polyuretiume, PES, Pl K, polyetherimide, PPS, ETI, or polysulfone fflled with carbon, stainless steel fiber, lubricants static dissipative and conductive thennoplastics. 

Plaslube . [Akzo Engineering Plastics] Acetal, nylon 6, 6/6,6/12, PC, or PPS resins lubricated widi PIPE, silicone, molybdenum disulfide, or carbon. internally lubricated engineering thermoplastics. 

StarL. [PertD Enamel Espanola SA] Lubricate engineering plastics. 

Emulsions are quite common in both nature and engineering. In addition to water-oil emulsions, there exist other kinds of emulsions milk, bitumens, plastic lubricants, water-emulsion paints etc. The type of emulsions that is most widespread in nature is an emulsion formed by water and some organic liquid. 

Precaution Explosive when mixed with potassium nitrate violent reaction with H2O2 Hazardous Decomp. Prods. Heated to decomp., emits toxic fumes of SOx and Mo Uses Friction modifier in lubricating oils lubricant in greases, oil dispersions, resin-bonded films, dry powders, etc. hydrogenation catalyst filler lubricating filler in engineering plastics... 

Uses Emollient, solvent, vise, control agent, lubricant, emulsifier for cosmetics lubricant, emulsifier for metals, leather, textiles carbon source in antibiotic culture broths raw material for engineering plastics impact modifier plasticizer stabilizer solvent for carbon paper, printing ink dyes food emulsifier, stabilizer solubilizer for flavors, vitamin oils pharmaceutical lubricant, emollient, solubilizer, stabilizer in food-contact textiles... 

Figure 6.269 Stress vs. strain at various temperatures for DuPont Engineering Plastics Zytel HTN51G35HSL—35% glass reinforced, heat stabilized, lubricated PPA resin (DAM).

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