7-/7j !312*) ICS Perforated gypsum board for acoustic use 7 ; ~ 1 ~ * i + r p $ ~ ~ a % ; i f i ~ ; p t ~ s ~ ~ 1 ~ ~ m ~ a $ j l : z ~ ~ ~ % a B M ~ I R * ~ ~ , S ~ G E ; ~ ~ M i&&$.(5@%agM i%f@)$i!&iT%N5SHT$$5% ,&tm ,%fi@B&$%YB&&BRM&%B%G B~EM&&*PkHBR#i$o RB5& a ~ ~ 9 1 H * i 4 , ~ S % ~ $ B H ~ $ $ 5 % o GBJ 47 TE@lS&%F%%k@!@%% GB/T 1250 &PB#k@@J?!?%k&fi$lJ~;k& GB/T 9775 %iBfi%%& JC/T 799 %%fi@& T?!J*iE%ZX%% 3=$$5YE 0 3. 1 5? 31 perforated hole E2IiT6@&iEi@%%iBMM&%?LBBo 3. 2 9 310 hole ratio ?L~~,~~iBa,a,wziBi@;FFFimi* t ~ . 3. 3 a& base board %?LfiB&Q9Ba&tA ,&%%t@6ff&a%mi6;tiB&o 3. 4 8 B kt $4 cover material #iG4R,!iT6ff&%i@m%54B$d$40 3. 5 QS$-H sound absorption material $".Tfi%&%GBS .X$TA4$FR&SG@k%~#HSrrSfidB$djl"4. 3. 6 P6t SIEk f% characteristic of sound absorption %?LfiB& ,B~$dH,%F$d$4&&G~~E%~d&ii'ij&M%F%&ER%~%F%Bo 4. 2. 1 %E ati$!Xf&% 500 mmX500 mm 4% 600 mmX6OO mm, 4. 2. 2 RE E$E%%% 9 mm fi 12 mm, 4 . 2 . 3 Rj3,?19E%%TL$ ?L@ ,TLEE3!X#i3%TL$X& l o m 1 R@,fLsE%~fLO 4.4 6ii2 4. 4. 1 tZiZBf& tZiZJlEFF39 :Fi"~~,B@~~~4,S&%~,.jtLE,~B.TL~~STLQ~FA~5~Bo 4 . 4 . 2 +%iZZ@!! :Gf=?@$d$4,~E 600 rnmx600 mm,E& 12 mm,7L% 6 mm,TL&E 18 rnrn S19@F87%TL%EiXi@&,tiE%: R~~%#/%E%bi@$? YC 600x12-06/18 JC/T 803-2007 TL 42 mm @6 @8 @lo : L i t A, T I &E mm 18 - 22 - 24 22 24 24 %7L$ ?LBBiE%%flF9J 8.7 5.8 4.9 10.4 8.7 13.6 #LBilZrn%+lmJ 10.1 6.7 5.7 12.0 10.1 15.7 6.1.2 &E%!I]%fl:@%? 30 mrn,$5flfE@ 0.01 mm; 6.1.3 %R :B/l\%@@ 0.01 mm; 6.1.4 %E&BR:800mm, I%%B; 6.1.5 ~ L @ % R & B ~ ~ P R B ~ B ~ ~ ~ + R : @ % E l l 250 mm, 1 ) ~ k 0.02 mm; 6.1.6 @,T@:Bj~$%B5kg,E&f 1 g ; Y e ffi 0.49 0.50 0.45 125 160 200 250 315 400 500 630 800 1000 1250 1600 0.32 0.27 0.20 75 150 300 2 000 0.25 0.23 0.21 0.15 0.43 0.49 2 500 0.19 0.20 0.21 0.21 0.68 0.50 3 150 0.15 0.20 0.20 0.44 0.88 0.94 4 000 0.17 0.22 0.19 0.73 0.91 0.94 0.86 0.80 0.69 0.93 0.88 0.59 0.97 0.68 0.47 0.81 0.57 0.52 0.66 0.411 0.50 0.51 0.31 0.34 0.41 0.28 0.25