Carpentry lacquer is raw material of a kind of furniture, to furniture surface the adornment, grade that promotes furniture is having quite main effect. Adaptable in home outfit carpentry lacquer often the price differs very far, so how to go evaluating the performance of carpentry lacquer? Chooses carpentry lacquer whether content is worth somewhat? About this problem, simple and character can undertake evaluating from the following respects: The apparent function of paint: The apparent function of paint is to point to can compare what feel intuitionisticly commonly, the function such as the sheds smooth sex, anti-current character, dry sex, sand milling sex, color accuracy that such as paints. The underlying performance of paint: Paint is immanent the evaluation of function, the main index coating that is bad of actor of decision paint quality is online Coatingol.com.

1? Viscosity index: Viscosity changes along with temperature and can have bigger metabolic range, accordingly sometimes difference of viscosity of rainy season of winter, summer is bigger, this is not paint quality to be not stabilized, often be manufacturer of a few furniture this bit an error to paint. 2? Index of not volatile content: Also calling solid content, this index is the only index that evaluation paint place contains effect component. There is error of a kind of understanding in furniture line of business at present, think paint viscosity is taller, can that water jumps over exchange day to exceed be to one's profit more, and the significant component that does not go considering paint. Actually, that water meets the day that add draws in paint finally entirely volatilize in air, and won't take existence workpiece appearance, day of that water that draws add is more, waste is actually bigger, and affect an environment badly. Accordingly, paint of low viscosity, tall solid is the development mainstream of furniture line of business. 3? Hardness: Cent is 6H, 5H, 4H3H, 2H, H, F, HB, 2B, 3B, 4B, 5B, 6B, wait for 14 grade, hardness of common paint film uprights commonly between B-3H, discretion of paint film hardness is a of function of token paint film simple index merely, be not hardness tall certain good. 4? Add exert oneself: Adherent force is the important token of paint and base material are close degree, also be the token index that furniture uses the paint in the process for a long time to whether can drop. 5? Warp sex: It is a of flexibility of token paint film main index. Paint film flexibility is furniture does not send the chap, token index that come off in using a process for a long time. 6? Impact resistance: Also be a of flexibility of token paint film main index. This target is particularly apparent to metallic lacquer meaning, fight strong sex to had been jumped over, criterion paint film is in not easily more bump hoar, phenomenon leaving a layer appears below the condition. 7? Cold-resistant sex: Show paint film is in what microtherm condition falls to fight cold ability. This function is a precondition that whether can decision furniture be the winter chill area such as chinese mainland north to use. 8? Hear resistance: Of function passing is to make sure paint film falls to wait for the be heated requirement of every day object to hot water, kettle in general use condition. 9? Be able to bear or endure lukewarm denaturation: This index is the taller state that asks to paint film. Can endure the paint film that cold hot loop experiments only, ability obtains the postulate that in any climate transfer to a lower level the heart uses. 10? Be able to bear or endure yellow denaturation: It is the token index that using lubricious property of process middleman and guarantor to paint film, use UV lamp to illuminate commonly or the off color value of insolation around, come the degree that mensurable token becomes angry. Off color value is less, colour retention jumps over beautiful, the paint film with reasonable design is checking the due and minor off color change below the condition. Paint uses medium problem to reach solve: 1? Paint flakes: The likelihood is the cause with too slick surface, if former coating is glazed lacquer or of opaque (add the lubricious oar coating without processing) , the paint that goes up newly is stuck in the surface not firm. May can be timber degenerates or the metal has rusty spot, because paint,also have quality is bad and those who flake. The paint of small area flakes, can use burnish of spun yarn paper, wipe next on be bored with child, brush on priming paint, go up afresh again lacquer. Of large area fall off must shuck lacquer entirely, recoat is brushed. 2? Bleb, pinprick: Unfinished of the dissolvent in film volatilizes completely, surface layer is dry already, cause the surface to be rushed to support by volatile, if the top is broken,be stythe eye of a needle, if do not have a top,defeat for bleb. Accordingly: ① if watch doing is too fast, agent of the bleb in painting when remain, solidify and carbon dioxide of water reaction child have not enough time to run; ② is one-time generous smear; The time interval between the layer is insufficient; ③ construction temperature is too high, bring about a watch to work too fast, solidify agent and water reaction are too much the carbon dioxide that produces excessive; ④ coating (include thinner) medium or by water content of besmear substance appearance environmental temperature is too too tall, high, the deputy reaction that can cause solidify agent be the same as water generates bubble of many carbon dioxide; ⑤ solidify agent adds a capacity overmuch, leave easier bubbly prevention and cure, means of settlement in high temperature especially: ① adjusts solvent to volatilize speed, add slow dry dissolvent appropriately, be like annulus already ketone, CAC; After paint has been allocated, quiet place makes an appointment with 20 minutes, volatilize in order to let the air that the belt in agitate process enters; ② cannot generous smear; Every time spray time interval does not want too short; ③ controls the temperature of gush room and dry room, be like burning hot summer, appropriate choosing is in in the morning or the spray when air temperature is inferior in the evening; Prevent sun direct illuminate, be besmeared be moved into besmear to hold a house below a Gang Congyan's hot sun sometimes inside, by besmear thing temperature often very tall, need to place refrigeration for some time to apply besmear to the ability after room temperature; ④ avoids the spatial construction with environmental too high temperature, burnish should be waited for after water mill yes especially after be being done adequately by moisture content of besmear content extent; Summer perspires on the hand fierce, the feeling that use a hand avoids to be besmeared as far as possible before spray content; ⑤ deserves correctly to compare solidify agent, in high temperature tall wet season, in a way drops solidify agent deserve to compare. 3? Occurrence crackle: After most of this kind of circumstance wants chemically to divide lacquer agent or sirocco spray gun to go to Qi Chu, go up afresh again lacquer. If rupture range is not big, can use sand milling piece or dry wet amphibious sand paper to touch water at this moment, the paint that abrasion ruptures, it is after exterior burnish is smooth, wipe on be bored with child, brush on priming paint, go up afresh again lacquer. 4? Stream hang a phenomenon: A. White base surface is rough, geometrical form is complex; B. The distance of spray gun and workpiece is too close; C. Quantity for spray is too much; D. Paint deserves to compare attenuant dosage too much; E. Construction environment temperature is too low; F. Administrative levels time interval is insufficient; G. Thinner volatilizes rate is too slow. Prevention and cure reachs a processing technique: Watch of ① white base handles level, the workpiece with geometrical complex form should divide second spray; ② spray gun and workpiece should maintain 20-30CM distance; ③ reduces oily quantity of air pressure, control, amount; ④ reduces the amount of thinner, construction viscosity should be controlled in 16 〞 (4# cup) ; If ⑤ uses workshop ground temperature too low, should control ground temperature of good construction field to spend reentry travel construction; ⑥ spray administrative levels should be expressed basically in ground floor paint film after working again gush the 2nd; ⑦ changes wash-and-wear thinner. 5? Mildewy become angry: This kind of question happens in damp paint surface more, if lunt condenses in glass and metallic surface,constant meeting produces the blotch of palm black. Can use antiseptic right now, the instruction that takes a manual handles mildewy place, after waiting for mould to kill, wash the face clean, go up afresh again next lacquer. 6? Blotch: The reason that paint surface produces blotch is very much. For example: The material that the moisture in emulsioni paint dissolves a wall to go up and rust gives lacquer side, the metope of brush of the velvet that use steel can produce rusty spot. Dark leakage tubal ooze shows blotch to wait inside the wall. To prevent blotch, , can brush a priming paint that contains aluminium powder first, if already appeared blotch, can handle emulsioni paint except decontamination spot first, after brushing a priming paint that contains aluminium powder, go up afresh again lacquer. 7? Lose luster: The reason is to did not go up priming paint, or priming paint and lining lacquer did not work to go up directly glazed lacquer, as a result glazed lacquer is absorbed by timber and lose luster. Of glazed lacquer bad also be a reason. Wear old paint with dry wet amphibious sand paper, the dirt of brush away burnish, use wet cloth clean exterior rub-up, wait for dry after appearing, brush afresh again above lacquer. Those who want special attention is, in air temperature very low environment issues lacquer, after paint film works, lose luster possibly also. 8? Orange skin, furrow: Film did not fill billabong to exhibit flowing namely dry already. ① paint is too stiff; ② pressure the distance of too big, nozzle and workpiece is too close or too far; ③ thinner sort is undeserved; ④ environment temperature is too high. Prevention and cure, means of settlement: ① paint is moved to construction viscosity (4# cup) 16-18 left and right sides; The distance that ② reduces air pressure, nozzle and workpiece wants to maintain control in 20-30CM, what paint film does not want gush is too thin; The sort of ③ thinner wants form a complete set to use, choose the dissolvent that works slow appropriately; ④ adjusts gush room temperature, control discharges tasteful amount. 9? Phenomenon removing bead (feel is very poor) reason: A. Construction environment is poor, yang Chen is too much; B. Nozzle is too small, pressure is too great paint pulverization is bad; C. Gush room is ventilated and bad, put in the space of gush room when construction leave a Qi Wu; D. Use solidify agent is already degenerative; E. The time after paint and solidify agent mix is too long, paint already gel. Prevention and cure, means of settlement: ① rebuilds gush room purifies air, clean gush room, control to have nothing to do personnel is entered; ② adjusts volume of spray gun nozzle, 1.5mm of optimal nozzle caliber controls face lacquer spray, adjust pressure; The distance of ③ spray gun and workpiece maintains in optimal distance; ④ makes gush room drafty, when construction no longer misty shape air stays inside gush room; Convert the solidify dose with good quality; After paint mixes with solidify agent, answer to give out inside 4 hours. 10? Paint does not work: ① coating the eyewinker such as medium or the water that be contained by besmear substance appearance, mellow, oil or candle, bring about solidify agent to use up; ② or solidify agent additive increase an amount insufficient; ③ or temperature are too low. Prevention and cure, means of settlement: ① chooses designation thinner (not hydrous, mellow, acerbity) . Especially banana oil, many alcohol is contained in the center kind solvent, meeting abundantly uses up solidify agent, and the thinner that still factories of many medium, small all do not choose form a complete set now, when making priming paint especially, often bring about priming paint not to work, sometimes the surface looks to already worked, but be the same as actually at solidify agent by many alcohol kind solvent is used up, colophony not well cross-linking, its are priming paint hardness as a result insufficient, burnish sticks sand paper or hit extremely easily wear, when besmear or face besmear in, can appear bite bottom, bubbly, plump a lot of defect such as degree of difference, hardness difference, adherent power difference; ② is pressed deserve to change an agent than adding firm; ③ is become room temperature under 5 ℃ when, dry of PU Qi Gan is very slow. 11? Lacquer face sticks on small bug: When taking the advantage of paint to did not work as far as possible, get rid of of will small bug goes, touch a bit paint to repair the surface gently with the brush next. If paint oneself is dry, after needing to wait for paint film to harden again eliminate small bug, such ability won't do the face so that be in a complete mess. 12? Lacquer timber surface gives heavy blackening on: The likelihood is knag going up Qi Qian was not sealed, classics sun is basked in, knag be heated, colophony from knag towel oozy and cause. Right now usable drawknife raze paints, come with burnish of fine sand paper next after showing knag, seal knag with the lacquer that seal a part, wait for dry after appearing, go up afresh again lacquer. 13? Bite bottom, loss of gloss to become white: Coating of the lower level on ① does not deserve to cover, the time between the layer is too short go up with respect to what use dilute of high strenth dissolvent besmear gush; The humidity inside room of too small spurt crosses ② temperature tall, ventilated environment is too poor cause paint film to become white lose luster; There are water portion and thinner to join in ③ paint too much, ply of short of paint film; Humidity of ④ construction location is too high. Prevention and cure, means of settlement: Form a complete set of coating of ① fluctuation layer is used, time of the construction between the layer is lengthened to fully dry again spray the 2nd, change attenuant dissolvent. ② rebuilds construction location, ventilated environment, best construction temperature is controlled in 25 ℃ relative humidity is in 70% the left and right sides; ③ adjusts good painting to deserve to compare reach construction viscosity (15 〞 - 17 〞 ) ; When ④ construction, avoid the circumstance with too high humidity and weather. 14? Go oily: After besmear is installed, the exterior tension of paint not divide evenly is caused. ① paints was being polluted is the mainest reason. The channel that is polluted has: A. Spray system, the compression of supply contains smeary — to examine a powerful person of pneumatics machine sea floor in air, put the oil that removes generation, water, check the effect of grease segregator; B. The canister that pack, opened batch can to be polluted by oily, fat — matchs paint with clean container, match Qi Qian, use day of Na Shuiqing to be washed first; C. What take on jockey hand is smeary, used on winter hand especially oily protect skin to taste, in the burnish, pollution that matchs Qi Shiyi to cause paint — handlers affirms to be tasted without grease on the hand, had better use soap or day first that bath clean both hands; D. The pollution of bottom material, include to fall time is deposited to grow — to affirm the free from contamination on bottom material after dirt, smeary, burnish, second burnish time interval is too long before be like, new burnish; E. The pollution that besmears by, include priming paint, medium because Tu Zhong uses auxiliary overmuch (if shed smooth agent) , and auxiliary is met to paint film superstratum Tu Guoguang of migratory, bottom excellent, burnish is inadequate, individual the place is leaked to grind —— to be hit again grind, affirm burnish is complete. The influence of ② adscititious electric field, magnetic field; Because paint is undesirable conductor of report, in process of agitate, spray, because grind meeting generation is many and electrostatic, when one stronger adscititious report magnetic field exists, can bring about go badly oily. The existence that if the — such as the around presence that using the instrument with dynamo of electric welder, dc, very strong magnetic field affirms,should besmear there is above case when outfit just besmears outfit. ③ operation is contained on personnel body stronger electrostatic, if ② place is narrated, paint surface often is piling up many and electrostatic, go up when handlers body electrostatic enough a long time, can bring about oil. This kind of case often happens in winter and plum rains season; In process of ④ paint production, auxiliary not agitate divide evenly, bring about local auxiliary content exorbitant cause; Quality of ⑤ colophony itself is poor, like the element the quantity distributings too wide; Spray heavy panel, or thickness is abhorrent ⑥ besmears outfit is too thin; Thinner adds excess, viscosity crosses small painting to use general knowledge: 1, temperature, humidity: The normal use temperature of paint is in 15-35 ℃ , relative humidity does not exceed 80 ％ , exceed limitation of afore-mentioned temperature and humidity, before using, seek advice to coating supplier surely, the construction temperature of paint passes to small conference makes paint film works slow or do not work, be like right now forcibly construction face lacquer, can bring about craze of lacquer of later period face; The construction temperature of paint is exorbitant, can cause stream smooth, loss of gloss, bubbly wait for a problem; The humidity of construction environment is exorbitant, can bring about paint film hoar, hardness drops. 2, the time of keep in storage with the difficult oil after all closing: After PU paints the scale in pressing a recipe mixes, the use time below normal temperature cannot exceed 6 hours (25 ℃ ) , time of keep in storage passes long paint, those who cause paint film is meet flow after construction make the same score undesirable, paint film to express the phenomenon such as grain of dry of people of talent.