1、TT-W-5729 80 m 777777Lf 000b321 O TT-W-572B May 28, 1969 SUPERSEDING Int. Fed. Spec. TT-W-00572a (AGR-FS) January 23, 1968 and Fed. Spec. Tp-W-572 February 29, 1952 FEDE= SPECIFICATION WOOD PRESZRVATIVE: WATER-REPEUDIT This specificstLon was approved by the Conmissioner, Federal Supply Service, Gene
2、ral Services Aciministration, for the use of all Federal arencies. 1. SCOPE AND CLASSIFICATION 1.1 Scope. This specification covers materials that combine water-repellent and preservative properties of ready-to-use solutions for treatment of wood by simply nonpressure methods (see 6.1). position C i
3、s intended for tropical conditions or where maximum protection from a simple application is needed and should be specifically requested. may contact the treated wood, 1.2 Classification. compositions, as specified (see 6.2) : Com- Composition D is intended for uses only where food stuff The wood pre
4、servative covered by this specification shall be of the following Composition A - Pentachlorophenol. Composition B - Copper naphthenate, Composition C - Copper naphthenate (high concentration). Composition D - Copper-8-quinolinolate. 2. APPLICABLE M)mTS 2.1 SDecification and stand-. The following sp
5、ecifications and standards of the issues in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein: Federal Specifications: Tp-P-25 - Primer Coating, Exterior (Undercoat for Wood, Ready- TT-T-291 - Thinner, Paint, Volatile Mine
6、ral Spirits (Petroleum-Spirits) , TT-W-570 - Wood-Preservative; Pentachlorophenol. PPP-E-636 - Box, Fiberboard, PPP-C-96 - Cans, Metal, 28 gage and lighter. PPP-D-729 - PPP-P-704) - Pails, Metal: (Shipping, steel, 1 through 12 gallon). Mixed, White and Tints). Drums: Mecal, 55-gallon (for shipment U
7、I noncorrosive material). Federal Standards: Fed, Std. No, 123 - Marking for Domestic Shipent (Civilian Agencies!. Fed. Test Method Std. Nor 111 - Paint, Varnish, Lacquer, and Related Materials; Methods of Inspectipn, Sampling, and Testing. * (Activities outside the Federal Covernment may obtain cop
8、ies of Federal Specification, Standards, and Handbooks as outlined under General Information in the Index of Federal Specifications and Standards and at the prices indicated in the Index. issued, is for sale on a subscription basis by the Superintendent of Documents, U. S. Government Print- ing Offi
9、ce, Washington, D. C. 20402.) the Federal Goverment for bidding purposes are available without charge at the General Services Adminis- tration Regional Offices in Boeton, New York, Washington, D. C., Atlanta. C.hicago, Kansas City, Mo., Fort Worth, hnver, Sa! Francisco, Los Angeles, and 1-uburn, Was
10、hingto2 ) The Index, which includes cumulative monthly supplements as (Single copies of this specification and other product specifications required by activities outside (Federal Government activities may obtain copies of Federal Specifications, Standards, and Handbooks and the Index of Federal Spe
11、cifications and Ctandsrds from established distribution points in their agencies, ) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TT-W-572B 0 I 999777i 0006322 2 I TT-w-572E Military Standards: MIL-SPD-105 - Smpling Procedures and Tebles for Inspec
12、tion by Attributes. MIL-STD-129 - Marking for Chipent and Storage. (Copies of Military Specuications and Standards required by contractors in connection with specific procurement functions should be obtained from th procuring activity or as directed by the contracting officer.) The following documen
13、ts form a part of this specification to the extent specified herein, request for proposal shall apply% 2.2 Other Dublications. Unless otherwise indicated, the issue in effecti on date of invitation for bids or American WDod-Preservers Assoc!.ation (AWPA) Standards; A5 - Standard Methods for Analysis
14、 of Oil-Borne PreservaLives. P8 i Standards for Oil-Borne Preservatives. (Application for copies should be addressed to the American Wood-Preservers Association, 1012 - 14th Street, N. W., Washington, D. C. 20OQ5.) Unifom Freight Classification Rules: (Application for copies should be addressed to t
15、he Unifom Classification Committee, 202 Union Station, Chicago, Ili. 60606.) National Motor Freight Classification Rules: (Application for copies should be addressed to the National Classification Board, 1616 P. St., N. W. Washington, D. C. 20036.) 3. REQUIREMENTS 3.1 Homogeneity and stabilitg. The
16、treating solution shall be stable and homogeneous. Al1 in- gredients shall remain in solution without curling, livering, sludgtng, or precipitation under normal shipping and working conditions and when stored in closed containers for st least 6 months. geeled condition while at low teaperatures is n
17、ot objectionable, provided the mterial resdily becomes fluid when restored to normal working conditions. milliliters of sludge shall be deposited when cent.rifuged and not over 1 milliliter of solid preoipi- trate or insoluble resin shall be depsited after 2 weeks of exposure to air. A con- k incorr
18、ect; illegible; improper size, location, sequence, or method of application. Any component missing or damaged. Inadequate application of comporents such as incomplete closure of container flaps, loose strapping, inadequate stapling, or distortion of container. Provided by IHSNot for ResaleNo reprodu
19、ction or networking permitted without license from IHS-,-,-TT-w-5728 4.3 Tests. 4.3.1 u. The solutions shall be tested in accordance with method 4248 of Fed. Test Method Std. 4.3.2 Flash wint. No. w. Method Std, No. UJ. The solutions shall be tested in accordance uith method 4291 of Fed. Test 4.3.3
20、Preservative chemicals. 4.3.3.1 PentachloroDhenol, The determination of pentachlorophenol in the treating solution, in the absence of chlorine other than that in the pentachlorophenol, shall be made in accordance with method 5 of AWPA Standard A5. used and the result, in grams per gdlr . of solution
21、, should be multiplied by a correction factor of 1.1. 4.3.3.2 Compositions B and C. Copper naphthenate. The determination of copper shall be made in accordance with the method of AWPA Standard A5. 4.3.3 Preservative chemicals, 4.3.3.1 When other sources of chlorine are present, method 6 of that Stan
22、dard shall be PentachloroDhenol. The determination of pentachlorophenol in the treating solution, in the absence of chlorine other than that in the pentachlorophenol, shall be made in accordance with method 5 of AWPA Standard A5. used and the result, in grams per gallon of solution, should be multip
23、lied by a correction factor of 1.1. accordance with the method of AWPA Standard A5. When other sources of chlorine are present, method 6 of that Standard shall be 4.3.3.2 Comuositiono B and C. Copper naphthenate. The determination of copper shall be made in 4.3.3.3 Composition D. Copper-6-quinolinol
24、ate, The deternination of copper shall be made in accordance with the method of AWPA Standard A5 for copper in copper napthenate soliiticn. 4.3.L mer-repellency, The test block wders used for the tssts shal be made from straight-grained, machined to 1-1/2 by 10 inches and wafers cut 114 incn in leng
25、th clehr, average density, flat-grain, kiln-drie2 pondecs pine sapvoo 3 boards. The boards shall be One pair of adjacent, and-matched wafers stall 5e cat from each of five different boards (10 veers in ail), conditioned to constant weight at a controlled tmpsratcre of 85%. and relstive hddity of 65
26、percent. One of the conditioned, end-matched wafer3 frgm each pair shall be used ES a control and tested without treatment, seconds in the preservative followed by dryiag with free access tci air for.4 days to permit evaporation of solvents, wafers and conuitioned together to constont weight. The wa
27、fers shall be numbered fcr identification, store5 on e raised screen or rack, and The other shall be tested after ranoval Prom the csiiditiohing chamber and inunersion Por 30 i treated wafers shdl then be returced to the conditioning chamber with the control The teat shall be made by cornparine %he
28、swelling of the trarted wafers kth that o? the untreatsd The swelling shail be measured y means of the The dial is replaced and the wafer is placed so that one end bees firmly on control wafers after Bach has been heraed in water. swellometer (illustrated in fig. 1). inserted in the guides, the adju
29、sted base and the other end contacts the plunger of the clial, before immersion in water and the instrument is arranged in a container of distilled water at 75 2 5%. so the wafer is completely suberged (but the dial is dry) for 30 minutes at which time the second did reading is taken and the differe
30、nce is noted. The procedure is repested with each of the five untreated control wafers and matching five treated wafers using fresh water each time. The percentage water-repellent effectivaness of the preservative shall be deiermined by dividing the difference between the swelling of the treated waf
31、er and the swelling pf the end-matched untreated control wafer.of each pair by the swelling of the untreated wafer of tiis pair in the same interval, The average of the five pairs multiplied by 100 should meet the minimum requirement in 3.6. uselection of sapwood can be assured by mixing equal parts
32、 of (1) a solution of 5 grams of benzidine in 25 grams of hydrochloric acid and 970 grams of water and (2) and applying to end-grain wood surfaces. wood turns dark red-brown, With the dial gage renoved from the instrument, the wafer is A reading of the dial is pde solution of 10 percent sodium nitri
33、te, The sapwood irmneciiately shows a yellow color, while the heart- 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TT-W-572B 0 7779774 O006325 m TT-w-572E k.3.5 Surface dewsits. (for comwsition A only). Place three surfaced 1- by 1- by 1-inch tes
34、t blocks of heartwood redwood ISeauoia semmrvirens) weighing dishes with the end-grain surfaces in the top and bottom position. of composition A should be poured into the dishes to a depth of approximately 1/4 inch. the dishes into a ventilated drying oven heated to a temperature of 100C. and the ot
35、her after 2 hours, but before complete evaporation of the solution has occurred, above cases, expose the test blocks in the dishes at room temperature for 7 days, at which time the block surfaces, when examined under a bright light with R 1OX hand lens, shodd be free of crystalline pentachlorophenol
36、 (blooming) . paint) are definitely known by the Government pchaser, these materials shall be mentioned in invitation for bids and shall be used in the paintability and drying time tests. tests shall be ponderosa pine and the test paint shal conform to the requirements of !IT-P-25. of from 1/2 to 1
37、inch, of sapwood and heartwood, dried to a moisture content not to exceed 20 percent, and surfaced four sides, Each pair shall consist of two end-matched specimens from the same board, and each of the three pairs shall be cut from different boards. and painted without treatment. solution for 3 minut
38、es, glass rods and sllowed to dry for 72 hours at rom temperature in circulating air. mens shall then be exdned for compliance with 3.9 and for the presence of a glossy film, and waxy, greasy, or oil surface deposits under 3.8. Apply to the entire top surface of the three treated end the three mstch
39、ing untreated control specimens, one brush coating (3 wet mils) of either the primer selected or that conforming to the requirements of TT-P-25. ferably exterior, free of dew or rainfall for 48 hours. The treated and untreated specimens should be observed and compared for psint drying discoloration
40、and adhesion. covered thumbprint twist (approximately 180) under a pressure of approxhately 10 pounds (this can be determined with a 10-pound weight on a torsion balance or platform scales), the tackiness and adhesion of the paint coating on the treated specimens shall coEpare fairorably yith that a
41、pplied to the mat.ching untreated control specimens. also compare favorably with those on the untreated controls. into three separate 3-inch-diameter aluminum The preservative solution Remove one dish after 1 hour Place two of In all of the 4.3.6 Paintability and hing +he. When the wood species and
42、the primer paint cost (or stencil Otherwise, the species for these Prepare three pairs of wood test specimens, 2-1/2 inches wide and 12 inches long, with a thickness The specimens shall be of flat-grain material, containing significant proportions One end-matched specimen from each pair shall be use
43、d as a control The matching specimen from each pair shall be inmiersed in the treating The three treated specimens shall then be set in a flat position supported on The treated speci- Allow the coating to dry in a sunlit location, pre- When subjected to a cheesecloth- The color and appearance of the
44、 coatings on the treated surfaces should 4.3.7 Sludaine, Place 40 milliliters of tne treating solution in a 50-milliliter centrifuge tube with conical bottom and e gradGated scale, c?dll to 32 least 1 hour, then quickly place in a centrifuge, and rotate for 3 minUtes at 2,300 r.p.m. vit!: the menisc
45、us approximately 7 centimeters fronthe axis of rotation. precipitate by means of the graduated scale, Place I00 milliliters of the treating solution in a 250-milliliter low-form besker of nontransparent tqe auch as stainless steel and allow to remain stancling for 2 weeks uncovered at e temperature
46、between 75 and 100%. The beaker should be covered with a watch glas n such a way that dust will be kept ox$ but air can still enter, beaker will usually suffice, to resuspend them, sample (Bee 3.1). to 35 F. by plecing ir! a refrigerator fcir at After centrifuging, read the volme of Three 2-inch ben
47、t sections of a small glass r3d hung over the Lip of the )Place in e ceritrifuge and treat the unchilled smple as above with the 40-rillilitor After 2 weeks, if solids are thrown down, stir th ocntents cf the beaka? 4.3.8 Viscosity. The solutions shall be tested in accordaicc with method 4271 of Fed
48、. Test Method Std, NO. UJ 5. PREPARATION FOR DELIYERY 5.1 5.1.1 Level A. i Packaging shall be level A, BI or Cl as specified (see 6.2). The preservative shall be furnished in 1 gallon cane confodng with PPF-C-96, type V, class 2; 5-ga11on steel containers conforming with PPP-F-7J4, type I or in 55-g
49、allon steel drums conforming with PPP-D-729, type I or II (see 6.2j. be furnished with pour spouts. class 1, 2, 3, 4, 5, or 8; The 5 gallor. pails shall 5.1.2 Level B. The level B packaging shall comply with 5.1.1, except comercial exterior coating The preservative shall be furnished in 1-gallon cans, 5-gallon steel containers or are acceptaGe 6.2) , in 55-gallon steel dnims normally furnished for comercial practice (see 6.2). 5.1,3 Level C, 5 Provided by IHSNot for ResaleNo reproduction or networking permit
