Vim li cas Marine Plywood Adhesives dhau los ua cov khoom siv rooj tog

Cov mis ntawm foamed urea-formaldehyde resin nplaum yog 100 qhov chaw cob, 0.5 mus rau 1 feem ntshav mov, 0.2 mus rau 1 feem ammonium chloride , thiab 2 mus rau 4 ntu dej. Ntshav hmoov yog lub tshuab nqus dej uas tau ntim rau hauv 4 npaug ntawm nws cov dej loj rau 1 teev ua ntej siv. Thaum sib tov, ntxiv cov resin rau lub tshuab foaming thiab do. Qhov ceev ntawm lub tshuab foaming yog 250 ~ 300r / min, cov tsos ntawm cov nplaum yog ib qho immovable slurry nrog qhov ceev ntawm 0.3 ~ 0.4g / cm3, thiab lub sij hawm ua kom tsis pub tsawg tshaj 3h.

Cov qauv kev npaj ntawm urea-formaldehyde resin nplaum nplaum rau prepressing yog: 100 qhov chaw cob, 0.2 ~ 1 feem waterproof plywood ammonium chloride, 0 ~ 0.4 qhov chaw ammonia dej, 3 ~ 6 qhov chaw hmoov, 6 ~ 9 qhov chaw txiv laum huab xeeb hmoov. Yuav kom sib tov, ntxiv cov resin rau lub tov khoom, ces cov hmoov nplej, thiab sib tov rau 10 mus rau 15 feeb, kom txog thaum tsis muaj mov paj nyob rau hauv cov kua nplaum (los yog sib tov lub khob noom cookie nrog rau lwm cov resins ua ntej ua ib tug muab tshuaj txhuam, ces ntxiv tag nrho cov khoom xyaw. resins thiab sib tov zoo). Tom qab ntawd ntxiv txiv laum huab xeeb hmoov thiab do rau 5 feeb, thiab thaum kawg ntxiv 20% ammonium chloride tov thiab 25% chlorine dej, do rau 5 feeb ua ntej siv.

Cov qauv kev npaj ntawm phenolic resin nplaum (los ntawm pawg) yog: phenolic resin 100, chalk 7 ~ 12, ntoo hmoov 3, triformaldehyde 1 ~ 3, dej 2.5 ~ 5.0. Qhov sib tov ceev yog 140 ~ 150r / min, thiab txhua qhov sib xyaw yog ntxiv nyob rau hauv lem thaum sib tov. Do rau 5-10 feeb ntawm ib lub sij hawm, ntxiv rau txhua lub teeb thiab do rau 20 feeb ua ntej siv.