Acrylic plastics acrylate rubbers

In addition to poly(methyl methacrylate) plastics and polyacrylonitrile fibres, acrylic polymers find widespread use. First introduced in 1946, acrylic rubbers have become established as important special purpose rubbers with a useful combination of oil and heat resistance. Acrylic paints have become widely accepted particularly in the car industry whilst very interesting reactive adhesives, including the well-known super-glues are also made from acrylic polymers. 

FIGURE 3.24 Plots of volume fraction of the filled rubber in the swollen gel (Vrf) against aging temperature for acrylic rubber (ACM)-silica and epoxidized natural rubber (ENR)-silica hybrid nanocomposites. (From Bandyopadhyay, A. and Bhowmick, A.K., Plastic Rubber Comp. Macromol. Eng., 35, 210, 2006. Courtesy of Money Publishers.)... 

TPEs prepared from rubber-plastic blends usually show poor high-temperature properties. This problem could be solved by using high-melting plastics like polyamides and polyesters. But, often they impart processing problems to the blends. Jha and Bhowmick [49] and Jha et al. [50] have reported the development and properties of novel heat and oil-resistant TPEs from reactive blends of nylon-6 and acrylate rubber (ACM). The properties of various thermoplastic compositions are shown in Table 5.4. In this kind of blend, the plastic phase forms the continuous phase, whereas... 

Jha A., Dutta B., and Bhowmick A.K., Effect of fillers and plasticizers on the performance of novel heat and oil-resistant thermoplastic elastomers from nylon-6 and acrylate rubber blends, J. Appl. Polym. Sci., 74, 1490, 1999. 

Bonardi, C., Christou, Ph., Llauro-Darricades, M.E., Guillot, J., Guyot, A. and Pichot, C., 1989, Polymer Latex III International Conference, Characterization of Acrylic Latexes Functionalized by N-Methylol Acrylamide, 6/1-6/14, Plastics and Rubber Institute, London. 

Miller ML Acrylic acid polymers. In Bikales NM (ed) Encyclopedia of Polymer Science and Technology, Plastics, Resins, Rubbers, Fibers, Vol 1, p 197. New York, Interscience, 1964... 

For cellulose nitrate, polyacrylates of higher alcohols have proved to give very smooth and transparent films. Good results are obtained with polybutyl acrylate and polyethylhexyl acrylate. The polyacrylates of higher alcohols can be used as plasticizers for rubber. Oligomers of acrylates can not be used in combination with PVC, because they give only hard films. 

Weather-Resistance. For long-lived outdoor products, most plastics can be stabilized somewhat by opaque UV reflectors or at least dissolved UV stabilizers. For inherent resistance to sunlight, rain, and other components of weather, some preferred plastics include acrylonitrile/styrene/acrylic rubber, acry-lonitrile/styrene/ethylene-propylene rubber, polyvinyl chloride, fluoropolymers, and polymethyl methacrylate. 

The acrylic plastics use the term acryl such as polymethyl methacrylate (PMMA), polyacrylic acid, polymethacrytic acid, poly-R acrylate, poly-R methacrylate, polymethylacrylate, polyethylmethacrylate, and cyanoacrylate plastics. PMMA is the major and most important homopolymer in the series of acrylics with a sufficient high glass transition temperature to form useful products. Repeat units of the other types are used. Ethylacrylate repeat units form the major component in acrylate rubbers. PMMAs have high optical clarity, excellent weatherability, very broad color range, and hardest surface of any untreated thermoplastic. Chemical, thermal and impact properties are good to fair. Acrylics will fail in a brittle manner, independent of the temperature. They will suffer crazing when loaded at stress about halfway to the failure level. This effect is enhanced by the presence of solvents. 

Gama-FIL [Georgia Marble] Calcium carbonate filler for use in plastics, BMC/SMC, paint, caulks, sealants, adhesives, paper, foam urbane, niodi-fied acrylics, filled thermosets/thermo-plastics, and rubber. 

EPOXY-3-BUTOXY PROPANE (2426-08-6) C7H14O2 Highly flammable and peroxidizable liquid. Forms explosive mixture with air (flash point 130 F/54°C). Air and light form unstable and explosive peroxides. Violent reaction with strong oxidizers may cause fire and explosions acryl and acid halides. Incompatible with acids, boron trifluoride. Strong caustics may cause polymerization. Attacks some plastics and rubber. On small fires, use dry chemical powder (such as Purple-K-Powder), foam, or COj extinguishers. 

AMINE -o-METHOXYPHENYLAMINE (90-04-0) Combustible liquid (flash point >212°F/> 100°C), Heat contributes to instability. Incompatible with strong oxidizers, with risk of fire or explosions. Incompatible with organic anhydrides, acrylates, alcohols, aldehydes, alkylene oxides, substituted allyls, cellulose nitrate, cresols, caprolactam solution, epichlorohydrin, ethylene dichloride, isocyanates, ketones, glycols, nitrates, phenols, vinyl acetate. Exothermic decomposition with maleic anhydride. Increases the explosive sensitivity of nitromethane. Attacks some coatings, and some forms of plastic and rubber. 

TEM was used to study the toughening mechanism in rubber modified plastics. A crack tip of a damaged sample of an acrylic rubber modified epoxy resin was observed [Sue et al., 1993]. 

Starch utilization in plastic and rubber compositions began in the 60s and 70s, with oxidised starch in rubber and other polymers, such as urethane foams, poly(vinyl alcohol) and copolymers of poly(ethylene-co-acrylic acid) formulations, and as a filler in plasticized polyvinyl chloride (PVC) [37,39]. In another technique, gelatinized starch was mixed with PVC latex and the water was removed to give a PVC-starch composition, which was mixed with a PVC plasticizer such as dioctyl phthalate (DOP). 

Since the traces of some remaining monomers can give off unpleasant odours in many plastics and rubbers e.g., monomers of PVC, PS, polyvinyl alcohol and acrylics, they can be eliminated or kept to a minimum by using special inherently monomer-free polymers. 

AFK asbestos fiber reinforced plastic ANM acrylate rubber... 

CAS 112945-52-5 EINECS/ELINCS 231-545-4 Uses Filler for plastics, silicone rubber, cosmetics, pharmaceuticals, direct and indirect food applies., transparent polyester resin coatings, specialty RTV systems adsorbent, anticaking agent, glidant, suspending agent for pharmaceuticals thixotropy/suspension aid for acrylic enam-... 

Uses Monomer for creation of new polymer backbones and in formulating high performance acrylic latexes, plastic and rubber modifiers, coatings, adhesives, polyol modifiers, oil field demulsifiers, textile finishes, vise, modifiers, reactive chems. 

Polymers of lower n-alkyl acrylates are used in plastics to only a limited extent. Ethyl and butyl acrylates are, however, major components of acrylic elastomers. The polymers are usually formed by free-radical emulsion polymerization. Because acrylate esters are sensitive to hydrolysis under basic conditions, the polymerizations are usually conducted at neutral or acidic pH. The acrylic rubbers, like other elastomers, must be crosslinked or vulcanized to obtain optimum properties. Crosslinking can be accomplished by reactions with peroxides through abstractions of tertiary hydrogens by free radicals ... 

Storage Sensitive to moisture store in cool, dry place store under nitrogen keep tightly closed Uses Monomer for creation of new polymer backbones and in formulating high performance acrylic latexes, plastic and rubber modifiers, coatings, adhesives, polyol modifiers, oil field demulsifiers, textile finishes vise, modifiers, reactive chems. Manuf./Distrib. ABCR http //www.abcr.de, Aldrich http //www.sigma-aldrich.com, TCI Am. http //www.tciamerica. com... 

The surfaces of many plastics and rubbers have low surface energies (Table 3.1) such that wetting by an adhesive is inhibited unless special surface pretreatment processes have been employed. However, plastics which contain polar groups such as PVC, nylons and acrylics are bondable with a minimum of surface treatment. 

Terluran ABS blends with acrylic rubber BASF Plastics... 

Typical adhesives in each class are Liquids 1. Solvent—polyester, vinyl, phenolics acrylics, rubbers, epoxies, polyamide 2. Water—acrylics, rubber-casein 3. Anaerobics—cyanoacrylate mastics—rubbers, epoxies hot melts—polyamides, PE, PS, PVA film—epoxies, polyamide, phenolics pressure, sensitive—rubbers. Source Tauernicht, J. O., Bonding and Joining, Weight the Alternatives , Plastics Technology, August 1970. 

Uses in the manufacturing of acrylic resins for use in paint formulations, industrial coatings and latexes in the manufacturing of plastics, such as ethylene ethyl acrylate in the manufacturing of poly-acrylate elastomers and acrylic rubber in the forming of denture materials water-emulsion vehicle for paints, textiles and paper coatings, leather finishes, resins and adhesives lends flexibility to hard films A... 

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