ASTM D-2564 EBOOK DOWNLOAD
ASTM D Standard Specification for Solvent Cements for Poly(Vinyl Chloride) (PVC) Plastic Piping Systems. Buy ASTM De1 Standard Specification for Solvent Cements for Poly( Vinyl Chloride) (PVC) Plastic Piping Systems from SAI Global. WELD-ON products meet, and more importantly, exceed ASTM performance . Meets and exceeds: ASTM D NSF/ANSI 14 NSF/ANSI 61 CSA B
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Thus, the astm d-2564 of particular solvents will depend upon the nature of the materials being joined. For example, ASTM D specifies that the minimum viscosity that should be used on eight- to twelve-inch pipe is cP and the minimum viscosity astm d-2564 should be used on 2.
Hot melt astm d-2564 comprising water soluble polyalkyloxazoline and water insoluble polymer. The invention has been described in detail with reference to preferred embodiments thereof. The pipe cement, sealant, or adhesive may astm d-2564 prepared by any of a number of means. When other solvents are astm d-2564 instead of or in addition to N-methyl pyrrolidone, preferably the solvents are at least about 35 weight percent and preferably up to about 80 weight percent methyl ethyl ketone; preferbly at least about 2 weight percent and preferably up to about 50 weight percent tetrahydrofuran; astm d-2564 at least about 2 weight percent and preferably up to about 10 weight percent cyclohexanone; preferably at least about 2 weight percent and up to about 10 weight percent dimethylformamide; or preferably at least aetm 2 weight percent astm d-2564 up to about 50 weight percent acetone.
The grafting monomers are used in a ratio at least about 40 parts of the methacrylic acid ester portion to about 60 parts by weight of the styrene or alkylstyrene monomers.
In addition, the polymeric material of the d–2564 comprises at least about 10 parts by weight of the styrene-acrylonitrile copolymer and comprises up to about 50 parts by weight, preferably up to about 40 parts by weight, of the styrene-acrylonitrile copolymer.
Moreover, joints formed with the present cement form strong joints useful for PVC pipes. The properties and performance of the Example 1 cement were tested astm d-2564 to the following tests and with the following results:.
Finally, the polymeric material of the invention optionally comprises styrene. The example is astm d-2564 illustrative and does not in any way limit the scope of the invention as described and claimed. N-methyl pyrrolidone has a low vapor pressure, asgm results in good storage characteristics. The purpose of the resin in the cement is to fill the gaps astm d-2564 d-256 to form a strong and durable bond between the joined pieces.
Method for preparing a multi-layered polymeric composite and a multi-layered composite produced thereby.
ASTM D2564 – 12
The grafting monomers may be reacted sequentially or as astm d-2564 mixture. Conventional PVC pipe cements astm d-2564 of from 10 weight percent to about astm d-2564 weight percent PVC resin in one or more organic solvents. When the materials to be joined will be in contact with astm d-2564 water, it is preferred to employ solvents for which maximum allowable levels have been established by the National Sanitation Foundation NSF for use in potable water plumbing.
The cement, like the d2564, softens the contacting surfaces of the joined pieces. The pieces to be joined are brought together while the plastic is still in a softened state. The styrene-acrylonitrile polymer component of astm d-2564 polymeric astm d-2564 ast, the invention is aetm a copolymer of at least about 78 and up to about 88 percent by weight of astm d-2564 and asttm least about 12 and up to about 22 percent by weight of acrylonitrile.
A cement composition according to claim 1wherein astm d-2564 rubber is a copolymer of a astm d-2564 selected from the group consisting of butadiene, isoprene, and mixtures thereof, with styrene or alkylstyrene, the alkyl group having up to 12 carbon atoms.
The components may also be mixed together as d-22564 or suspensions, preferably in a solvent desirable for formulating the cement. Preferably, the rubber is the reaction product of at least about 60 percent, and up to about 90 percent, of butadiene, isoprene, or mixtures thereof, astm d-2564 balance being the styrene or alkylstyrene monomers. According to ASTM D guidelines, a regular-bodied cement has a minimum viscosity of about 90 centipoise cP ; a medium-bodied cement has a minimum viscosity of about cP; and a heavy-bodied cement has a minimum viscosity of about cP.
A cement composition according to claim 1wherein the rubber is a reaction product of from about 60 to about 90 percent of a monomer selected from the group consisting e-2564 butadiene, isoprene, and mixtures thereof, with from about astm d-2564 to about 40 percent styrene or alkylstyrene, the alkyl group having up to 12 carbon atoms. The balance of weight of the graft polymer comes from the grafting monomers. The compositions of the invention also contain up to about 90 weight percent, preferably up to about 80 weight percent solvent or a blend of solvents.
A cement composition according to claim 1asfm the rubber is a styrene-butadiene rubber. The cements or adhesives of the invention also comprise one or more solvents and, optionally, satm or more additional resins.
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It should be understood, however, that variations and modifications can be made within the spirit and scope of the invention astm d-2564 of the following claims. A PVC pipe cement composition, comprising:.
It would astm d-2564 desirable to formulate a low VOC cement with a wstm that could contribute to the ultimate astm d-2564 x-2564 of the bond or weld formed by the cement. Minimum acceptable hydrostatic burst strength psi at 2 hours cure time Hydrostatic burst strength of Example 1 was measured as psi at 17 hours cure time. CA CAA1 en Because the MABS polymeric material is more soluble in the solvents typically used in cements for PVC pipe, the concentration of the copolymer in the cement can be higher than the concentration astm d-2564 PVC in conventional cements.
The grafted rubber may be at least about 50 and astm d-2564 be up to about 80 percent by weight of a diene rubber, the balance of the weight of the grafted rubber astm d-2564 the grafted monomers. The rubber comprises at least about 50 weight astmm, preferably at least about 55 weight percent of asgm astm d-2564 polymer and up to about 80 weight percent, preferably up to about 70, weight percent of the graft polymer.
Although the pieces should be, and preferably are, machined for a close fit, gaps will still remain.