Fire performance evaluation of different resins for potential iafss. Development of vinyl ester resins with improved flame retardant. Mechanical property data sumitomo bakelite durez 12686 phenolic novolac, sumitomo bakelite durez 12687 cnsl phenolic resin, sumitomo bakelite. Description durez 29095 is an oilsoluble, thermoplastic, phenolic tackifier resin supplied in flake form. Seferis polymeric composites laboratory, department of chemical engineering, university of washington box 351750, seattle, washington, united states of america summary. The plant manufactures phenolic resins and phenolic moulding compounds. Sherry klein heitler cases posted with a 30000 identifier, i. Us4031276a preparation of densified wood impregnated with. In the method phenol and formaldehyde at an initial ph of 8. Phenolic resin for refractory uses sumitomo durez company, ltd. Low dust level versions of plenco phenolic resins are available also. The durez plant was built in 1970 and is now part of the sbhpp sumitomo bakelite high performance plastics division owned by sumitomo bakelite co. Phenolic resins encyclopedia of polymer science and.
Phenolic resins for binding inorganic materials and thermal insulating applications which are easy to use and offer superior heat resistance, high mechanical strength, flame retardancy and workability. The area under tan delta curves during dma isothermal scans of such samples decreased as the degree of precure increased. Phenolic phenolformaldehyde resins are well known to have excellent flame retardance, good heat resistance, and low smoketoxic gas evolution on burning 5. Pdf the characteristics of oxalic acid catalyzed phenolic resins, synthesized using the conventional heating method and by a onepot. Features excellent compatibility with modifying agents. Lignin economics will be a factor for its potential use in phenolic resins.
Phenolformaldehyde resin, also called phenolic resin, any of a number of synthetic resins made by reacting phenol an aromatic alcohol derived from benzene with formaldehyde a reactive gas derived from methane. Typical properties durez test methods are available upon request. Phenolic resins technology handbook 2nd revised edition. Cyanate, epoxy, a1 lyl, acrylate, methacrylate and. It is recommended as a softener in compounding nbr stocks and will impart reinforcement. Development of vinyl ester resins with improved flame retardant properties for structural marine applications. Actually the alkylation of the phenolic resin does not play a role in the mechanical properties. The escalating cost of energy and its impact on phenolic resin raw materials, resin production, and processing of phenolic resins by customers is of paramount importance. Phenolic resins market size, share industry trend report. Phenolic novolac and resol resins phenolic thermosetting resin. It is also finding increased usage in pressuresensitive tape formulations. Improved preparation of densified wood reinforced with a resole phenolic resin is accomplished by impregnating wood with a solution of the resin in the presence of about 0. Based on these findings, the smarttrac system can be used to control the cure state of this or similar phenolic compounds. Phenolformaldehyde resins were the first completely synthetic polymers to be commercialized.
Phenolic resins for friction materials sumitomo bakelite co. Environmental considerations continue to grow in importance. Drt90 tp and 100 tp are stored in 25 kg, hdpe woven bags. Phenolformaldehyde resin chemical compound britannica. This book basically deals with general reaction of phenols with aldehydes, the resoles, curing stages of. Phenolic resins are a family of polymers and oligomers composed of a wide range of structures based on the various reaction products of phenols with formaldehyde. Durez canadas 2012 toxics substance reduction plan summary.
Sumitomo bakelite durez 23570 phenolic, injection grade. The condensation reaction of phenol with acetone produces bisphenol a which is extensively used in polymer industries to synthesis various epoxide resins and polycarbonates. Phenolic resin is used as a binder in loudspeaker driver suspension components which are made of cloth. The resulting materials are designed to meet some of the most demanding engineering requirements. A century of progress louis pilato editorphenolic resins. Sbhpp phenolic foam for floral application, is an open cell foam which allow absorption of a high amount of water that will be retained for a long time. In other words, all said additives promoted cure and above all, the novolac type resorcinol resin a proved to be most effective for these curing periods. The global phenolic resins market size was valued at usd 11. Pdf evaluation of phenolic resins from onepot microwave synthesis.
A phenolic resin for refractory uses, consisting essentially of a liquid phenolic resole resin having a methylol group index of about 0. Hazards identification emergency overview light yellow liquid. Phenolic resins are also used for making exterior plywood commonly known as weather and boil proof wbp plywood because phenolic resins have no melting point but only a decomposing point in the temperature zone of 220 c 428 f and above. In this study, phenolformaldehyde resins catalyzed with sodium hydroxide. Through durez, we are able to offer a broad line of standard and customdesigned products that exhibit outstanding performance. Sbhpp phenolic resins are used as binder for the manufacturing of wood and electrical laminates. The most widely used phenolic resins for composites are resoles due to their lowviscosity. Tlc ingredients is very proud to be the north american distributor for durez corporation, a leader in highperformance, specialty phenolic resins. To this end, this website uses cookies that generate analytical statistics about the use of our website. Plenco phenolic resins for felt bonding applications exhibit low emission and odor levels.
In the transportation sector, there is a rise in demand for rubber and friction materials and has generated interest in durable phenolic compounds and lightweight, which is driving the growth. A phenolresorcinolformaldehyde resin and a method for making the same is disclosed. Take time to consult our cookie policy for more information on the cookies we use and how to delete or block them. In fact, the impedance data resembled signatures for polyester resins and responded to temperature in a similar fashion. Phenolic resins durez data sheet durez corporation resin number. Part of the global sumitomo bakelite phenolic resin portfolio, durez is the industry leader in thermoset resins used in the adhesives, specialty coatings, abrasive, rubber and. Prolonged exposure not likely to cause significant irritating. Phenolic resins continue to be an important bonding agent for a diversity of uses encompassing the joining of metals, glasses, wood, paper, rubber to other substrates with favorable costperformance characteristics that surpass most other polymeric resins. Low energy systems are stressed by resin customers in spite of cure.
There is no discernable relationship between impedance data and surface hardness. It is designed for high strength, good dimensional stability, and electrical properties even after long term exposure to. Description varcum 29101 is a onestep lump phenolic resin. We offer phenolic resins as binder for friction materials which are used for brake linings, disc brake pads, clutch plates of transmission and others with superior heat resistance and adhesive performance. Cas durez 12987 modified two step phenolic resin, m8576 proprietary msds toxicity property. Request pdf development of vinyl ester resins with improved flame. The polymerization reaction of phenol with formaldehyde is used to commercially prepare phenolic resins. Applications vary from commodity construction materials to high technology applications in electronics and aerospace. Phenolic resin market by type resol and novolac and by.
Part of the global sumitomo bakelite phenolic resin portfolio, durez is the industry leader in thermoset resins used in the adhesives, specialty coatings, abrasive, rubber and friction industries. Phenolic, injection grade, durez 23570 black phenolic is a glass and mineral filled twostage, special purpose molding material. Phenolic resins are prepared using acidic or basic catalysts. Synthesis of improved phenolic resins twenty seven addi ti on cured phenol ic resin compositions were prepared and tested for their abi 1 ity to give char residues comparable to stateof theart phenol ic resins. Method for accelerating cure of resole type phenolic resins. The phenolic resin of claim 1 wherein the liquid phenolic resole resin has a free moisture content of about 8 weight percent or less. Durez 175 is recoomended for use in nitrile rubber solvent cements. Practical guidelines for the efficient postbaking of molded phenolics by theodore n. May cause allergic skin reaction adverse human health effects eye. Following two resins were sourced from sumitomo bakelite europe n.
It should be noted that the resin akrochem p49 and p86 portion of reinforcing phenolic resins is only a moderate tackifier. Commercial production of phenolic resins is presently carried out in batches of about 150 tonnes. Phenolic resin, durez 37 is a viscous thermoplastic phenolic resin that requires the addition of hexamethylenetetramine to atttain thermosetting properties. Durez 29095 is widely used in tire manufacture for treads and butt splicing cements.
By further browsing on this website, you agree to our use of cookies. Pdf in this work two types of ligninnovolac resins have been formulated, partially substituting phenol by softwood ammonium lignosulfonate as filler. Phenolformaldehyde resin curing and bonding in steam. If good tack is needed in a compound, it is best to get a true tackifying phenolic resin ask akrochem technical service for help in choosing a proper tackifying resin. Jan 17, 1984 namely, all said additive incorporated resins are better than the solid resole type phenolic resin b alone in the curing characteristics of initiation and middle period.
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