غراء خشب الابيض تركيز 68%
Hide glue is measured on the basis of its gel strength, a measure of how many grams of force it requires to depress a 1/2” plunger 4mm. into a 12.5% protein solution of the glue at 10 °C.
Glue is manufactured in standard grades from 32 to 512 grams.
192 gram strength is the most commonly used for woodworking
251 is the highest normally used for instrument building
135 is the lowest used for general woodwork.
Types of wood glue
resin adhesives feature a low effective cost, low cure temperatures, resistance to microorganisms and abrasion, and light color.
It does not creep, and can be repaired with epoxy.
It can rapidly deteriorate in hot, moist environments, releasing formaldehyde
Phenol formaldehyde resin
is commonly used for making plywood. It is cured at elevated temperature and pressure
(PVA), also known as "white glue" or "hobby and craft", and aliphatic resin emulsion, commonly referred to as "carpenter's glue" or "yellow glue", which has similar relative ultimate strength.
The two have different grip characteristics before initial set, with PVAs exhibiting more slip during assembly and yellow glue having more initial grip. PVAs are non-toxic and very easy to use, but hard to repair since nothing else sticks well to the hardened glue. PVAs will creep under constant load.
1. A wood adhesive, comprising
a) 100 weight parts of water
b) between 3 and 45 weight parts of a proteinaceous material
c) between 0.01 and 15 weight parts of anacidity regulator
d) between 0.01 and 15 weight parts of an aromatic compound
e) between 0.01 and 15 weight parts of a curing agent
f) between 0.01 and 15 weight parts of a preservative
g) between 0 and 15 weight parts of a viscosity modifier
h) between 0 and 10 weight parts of a filler
i) between 0 and 15 weight parts of a drier
a tannin, a tannin extract, resorcine, maltol, phenol, sodium dodecyl benzene sulfonate, resorcino, dimethyl phthalate, thymol,dinaphthol, octylphenol, m-nitrophenol, p-chlorophenol, catechol, dihydroxytoluene, xylene, or a mixture
ammonium chloride, potassium pyrosulfate, sodium sulfite, sodium dihydrogen phosphate, sodium tetraborate, sodiumhypophosphite, sodium bisulfate, ferric sulfate, sodium silicate, triethylamine, 3,3',4,4'-benzophenonetetracarboxylic dianhydride, 2-dodecen-1-ylsuccinic anhydride, decanedihydrazide, chlorendic anhydride, ammonium perchlorate, or a mixture thereof.
comprises more than 5 wt. % of protein
defatted soy flour, defatted soybean meal, soy protein isolate, defatted cottonseed meal, corngluten meal, zein, wheat protein, cassava protein, peanut protein, rice protein, pea protein, lactalbumin, single cell protein, defatted rapeseed meal, fishmeal, gelatin, bone glue, meat and bone meal, defatted castor bean seed meal, skim milk powder, defatted whey powder, defatted egg powder, defatted peanut meal, feather protein, defatted meal mixture, yeast protein, an extract thereof, or a mixture thereof.
an organic acid, an organic acid salt, an organic acid anhydride, or a mixture thereof.
1,2,3,4-butane tetracarboxylic acid, dodecanoic acid, citric acid, sodium citrate, malic acid, tartaric acid, fumaric acid, salicylic acid, fatty acid, quininic acid,butanedioic acid, itaconic acid, cis-butenedioic acid, trans-butenedioic acid, chloroacetic acid, mercaptoacetic acid, malonic acid, glutaric acid, .alpha.-ketoglutaric acid, EDTA, adipic acid, azelaic acid, pyruvic acid, decanedioic acid, lactic acid,oxalic acid, a salt thereof, an acid anhydride thereof, or a mixture thereof.
sorbic acid, potassium sorbate, phytic acid, methylparaben, ethylparaben, propylparaben, butylparaben, ethoxyguin, dehydroacetic acid, benzoic acid, sodium benzoate, propionic acid,sodium propionate, calcium dipropionate, kathon CG, fumaric acid, dimethyl fumarate, trichloroisocyanuric acid, sodium diacetate, dodecene dicyclohexylamine, benzotriazole, copper quinolate, glycolic acid, sodium pentachlorophenolate, sodium nitrite,sodium bisulfite, sodium sulfite, cresol, p-cumylphenol, potassium benzoate, 2,2-dibromo-2-cyanoacetamide, potassium permanganate, propionic acid potassium salt, dequalinium chloride, 1,2-propanediol, 1,4-dichlorobenzene, 2-oxetanone, dichlofluanid,dichlorophen, quintozine, dimethyl fumarate, salicylic acid, sodium acetate, ethoxyquin, 2-phenoxyethanol, ethylene oxide, sodium chlorite, folpet, sodium hypochlorite, formic acid, sodium lauroylsarcosinate, phthalide, fuberidazole, sodiummercaptobenzothiazole, 2-mercaptobenzothiazole, sodium perborate, furazolidone, sodium percarbonate, pentanedial, sodium salicylate sulfadimethoxine, glycin, sulfamethazine, glyoxal, sulfamerazine, sulfamethoxazole, guaiacol, sulfameter,sulfamonomethoxine, sulfisoxazole gantrisin, bromol, hexachlorophene, 2-(thiocyanatomethylthio)benzothiazole, trichlorophenol, hydrogen peroxide, DBDCB, thiabendazole, ambam, trisodium 4-carboxy-5-mercapto-3-hydroxy-isothiazole, anilazine,thiophanate-methyl, benomyl, tribromsalan, mancozeb, triclosan, maneb, mebenil, metham-sodium, quinaldine, zinc ethylenebisdithiocarbamate, captafol, zinc bis dimethyldithiocarbamate, captan, milneb, carbendazim, carboxin, NABAM, chloramphenicol,chlorotetracycline, cetrimonium pentachlorophenoxide, dihydrostreptomycin, lisozima, oxytetracycline, colistin sulfate, tetracycline, thiamphenicol, 5-chloro-2-methyl-4-isothiazolin-3-one, pentachlorophenol, chlorothalonil, pentachlorophenol copper,clotrimazole, isothiazolinones, dimethyloldimethyl hydantoin, 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one hydrochloride, nisin, or a mixture thereof.
konjac glucomannan, xanthan gum, sodium alginate, hydroxypropyl starch, propyleneglycol alginate, gelatin, cyclohexapentylose, pectin, carrageenan, agar, gellan gum, arabicgum, tian-jing gum, carfopol resin, polyvinylpyrrolidone, dextrin, maltodextrin, chitosan, hydrolytic polymaleic anhydride, dimethyl sulfoxide, glycerol esters of wood rosin, glycerol esters of partially hydrogenated wood rosin, rosin modified maleicglyceride, hydrogenated rosin, polymerized rosin, disproportionated rosin, maleated rosin, rosin emulsion, petroleum resin emulsion, ployethylene wax, polyethylene glycol, polybutadiene, isocyanate, polyacrylamide, poly(vinyl alcohol), poly(1-butene),polyisobutylene, cellulose acetate butyrate, carboxymethyl cellulose, carboxymethylcellulose sodium, guar gum or a mixture thereof.
diatomite, kaolin, bentonite, talcum powder, glass wool, rock wool, glass flour, sand, sawdust, silica fume, microsilica, silica micropowder, light calcium carbonate, activated clay,cellulose, titanium pigment, wood fiber, or a mixture thereof.
diethylene glycol, glycerin, acetone, methanol, ethanol, industrial alcohol, methyl acetate, ethyl acetate, n-butanol, isobutanol, benzoic sulfimide, or a mixture thereof.