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Rubbers poly sulfide

Poly sulfide rubber was first produced in 1929, and the liquid polymers were used in sealants and as flexibilizers for epoxy adhesives around 1950. In 1952 the polysulfide sealant was introduced to the construction industry [11, p. 74]. In the 1950s the first butyl rubber caulks appeared in the construction market [11. p. 108] and latex caulks [vinyl acrylic and poly(vinyl acetate)] appeared sometime after 1956. [Pg.17]

The load and time of friction in the last case have to be decreased due to low mechanical strength of poly sulfide rubber. [Pg.22]

FIGURE 14.6 Tribological characteristics of Armco iron - polymer material friction couple. A - ebonite/20 N - 1 st cycle B - ebonite/20 N - 2nd cycle C - SBR vulcanizate - 1st cycle D - SBR vulcanizate - 2nd cycle E - poly sulfide rubber - 1st cycle F -poly sulfide rubber - 2nd cycle G - polysulphone - 1st cycle F - polysulphone - 2nd cycle. [Pg.182]

With the development of synthetic elastomers during World War II, new types of adhesives appeared for application to a broader range of substrates and for use at higher temperatures. Styrene-butadiene and butadiene-acrylonitrile copolymers found application in new adhesives. There were also significant concurrent developments in adhesives based on chlorinated rubber, polychloroprene (neoprene), and poly sulfide rubber. Development of carboxylic elastomers, silicone rubbers, and polyurethanes followed. [Pg.556]

Compound, caulking, conductive Compound, polyurethane Compound, heat sink, silicone Compound, sealing, poly sulfide rubber Compound, plastic polyurethane Primer, silicone rubber sealant Primer, polyurethane Primer, silicone... [Pg.634]

Poly sulfide Polymers. These polymers are made up of aliphatic hydrocarbon units connected by di-, tri- or tetrasulfide links. The synthetic rubber found useful in ordn has hydrocarbon units linked by either O or formal segments. The polymers are usually prepd by the condensation of a suitable organic dihalide, usually the chloride, with aq Na polysulfide. According to Ref 8, the most practical organic dichloride is dichlorodiethylformal viz, Bis[ 2[Pg.827]

Thiokol A, Eihanite, Perdu ren. The first commercial poly-sulfide polymer, prepd from ethylene dichloride and sodium polysulfide. Sulfur content 84% d about 1.6. Mixes with natural rubber. Cured polymer retains unpleasant odor irritating fumes evolve during manuf. Stable to the usual organic solvents and dil mineral acids. Unstable to alkalies and oxidizing substances. Of low tensile strength and abrasion resistance. Not recommended where tropic or arctic climates prevail,... [Pg.1471]

Applications of epoxy-polysulfide adhesives primarily include structural assemblies requiring some degree of resilience. Epoxy-poly sulfides are used in bonding concrete for floors, airport runways, bridges and other concrete structures, metals, glass and ceramics, wood, rubber, and some plastics. They are particularly durable in outdoor applications where temperature extremes (freeze-thaw cycles) will be encountered. Epoxy-poly sulfides can be heavily filled without adversely affecting their properties. [Pg.84]

Fig. 3.41 Kinetics of radical degradation resulting from pulverizing in a vibrating ball mill for sulfur and peroxide vulcanizates of SKMS 30 ARKM-15 (oil-extended styrene-a-methyl-styrene) rubbers at 80°K (each test specimen treated for 20 min) (1) peroxide (2) hydrocarbon (3) poly sulfide radicals [40]. Fig. 3.41 Kinetics of radical degradation resulting from pulverizing in a vibrating ball mill for sulfur and peroxide vulcanizates of SKMS 30 ARKM-15 (oil-extended styrene-a-methyl-styrene) rubbers at 80°K (each test specimen treated for 20 min) (1) peroxide (2) hydrocarbon (3) poly sulfide radicals [40].
Caulking compound (liquid polymer poly sulfide synthetic rubber formula 112 for metal enclosures)... [Pg.634]

Bertozzi, E. R., Chemistry and Technology of Elastomeric Poly sulfide Polymers, Rubber Reviews, 114 (Feb. 1968). [Pg.639]

Figure 3 Distribution of mono-, di- and poly-sulfide crosslinks as a function of reaction time for whole-latex NR vulcanized at 100 °C. Cure system in parts by wt. % of rubber sulfur, 2.5 zinc oxide, 3.0 zinc diethyldithiocarbamate, 1.0 zinc benzothiazole-2-thiolate, 1.0., Total crosslinks , polysulfide A, disulfide , monosulfide crosslinks... Figure 3 Distribution of mono-, di- and poly-sulfide crosslinks as a function of reaction time for whole-latex NR vulcanized at 100 °C. Cure system in parts by wt. % of rubber sulfur, 2.5 zinc oxide, 3.0 zinc diethyldithiocarbamate, 1.0 zinc benzothiazole-2-thiolate, 1.0., Total crosslinks , polysulfide A, disulfide , monosulfide crosslinks...
The vulcanization of polybutadiene rubbers deviates substantially from this reaction pattern, evidently because the bulk of the accelerator becomes irreversibly bound to the rubber at an early stage. This denudes the vulcanizing system of zinc accelerator-thiolate complexes and, therefore, prevents desulfuration from occurring. The crosslinks thus remain di- and poly-sulfidic and are apparently less prone to decomposition than in the case of the polyisoprene rubbers, since cyclic sulfides and conjugated hydrocarbon groupings seem not to be prominent products. The removal of accelerator leaves the system unresponsive to zinc and gives it the characteristics of unaccelerated vulcanization with the result that vicinal crosslinking and crosslinks with saturated chain junctions become important products. [Pg.904]

Thio rubber (in the UK for poly sulfide) Vf 1. Vulcan fiber... [Pg.2260]

Ethylene sulfide has been employed as an intermediate in poly meric compositions from cryanamide,70 biguanide,78 and guanylurea,71 which are claimed to be UBeful aa insecticides, rubber addenda, and dehairing agents. [Pg.316]

MC MDI MEKP MF MMA MPEG MPF NBR NDI NR OPET OPP OSA PA PAEK PAI PAN PB PBAN PBI PBN PBS PBT PC PCD PCT PCTFE PE PEC PEG PEI PEK PEN PES PET PF PFA PI PIBI PMDI PMMA PMP PO PP PPA PPC PPO PPS PPSU Methyl cellulose Methylene diphenylene diisocyanate Methyl ethyl ketone peroxide Melamine formaldehyde Methyl methacrylate Polyethylene glycol monomethyl ether Melamine-phenol-formaldehyde Nitrile butyl rubber Naphthalene diisocyanate Natural rubber Oriented polyethylene terephthalate Oriented polypropylene Olefin-modified styrene-acrylonitrile Polyamide Poly(aryl ether-ketone) Poly(amide-imide) Polyacrylonitrile Polybutylene Poly(butadiene-acrylonitrile) Polybenzimidazole Polybutylene naphthalate Poly(butadiene-styrene) Poly(butylene terephthalate) Polycarbonate Polycarbodiimide Poly(cyclohexylene-dimethylene terephthalate) Polychlorotrifluoroethylene Polyethylene Chlorinated polyethylene Poly(ethylene glycol) Poly(ether-imide) Poly(ether-ketone) Polyethylene naphthalate Polyether sulfone Polyethylene terephthalate Phenol-formaldehyde copolymer Perfluoroalkoxy resin Polyimide Poly(isobutylene), Butyl rubber Polymeric methylene diphenylene diisocyanate Poly(methyl methacrylate) Poly(methylpentene) Polyolefins Polypropylene Polyphthalamide Chlorinated polypropylene Poly(phenylene oxide) Poly(phenylene sulfide) Poly(phenylene sulfone)... [Pg.959]

See other pages where Rubbers poly sulfide is mentioned: [Pg.1069]    [Pg.1334]    [Pg.953]    [Pg.736]    [Pg.28]    [Pg.172]    [Pg.176]    [Pg.703]    [Pg.1069]    [Pg.1334]    [Pg.953]    [Pg.736]    [Pg.28]    [Pg.172]    [Pg.176]    [Pg.703]    [Pg.741]    [Pg.131]    [Pg.88]    [Pg.89]    [Pg.93]    [Pg.741]    [Pg.431]    [Pg.179]    [Pg.22]    [Pg.624]    [Pg.282]    [Pg.889]    [Pg.901]    [Pg.901]    [Pg.902]    [Pg.904]    [Pg.428]    [Pg.331]    [Pg.873]    [Pg.23]    [Pg.80]    [Pg.213]   
See also in sourсe #XX -- [ Pg.10 , Pg.61 ]



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