異型膠合板密(mi)度是(shi)(shi)(shi)多少(shao)？膠(jiao)(jiao)合(he)板(ban)(ban)是(shi)(shi)(shi)一(yi)種(zhong)人造板(ban)(ban)，是(shi)(shi)(shi)家具(ju)常用(yong)(yong)(yong)材料之一(yi)，膠(jiao)(jiao)合(he)板(ban)(ban)是(shi)(shi)(shi)由木段旋切成(cheng)單(dan)(dan)板(ban)(ban)或由木方(fang)跑切成(cheng)薄木，再用(yong)(yong)(yong)膠(jiao)(jiao)粘膠(jiao)(jiao)合(he)而(er)成(cheng)的(de)(de)(de)三(san)層(ceng)(ceng)或多層(ceng)(ceng)材料的(de)(de)(de)板(ban)(ban)狀(zhuang)材料，一(yi)般用(yong)(yong)(yong)多層(ceng)(ceng)單(dan)(dan)板(ban)(ban)，使相鄰的(de)(de)(de)單(dan)(dan)板(ban)(ban)的(de)(de)(de)纖維方(fang)向(xiang)相互垂直膠(jiao)(jiao)合(he)而(er)成(cheng)。一(yi)組單(dan)(dan)板(ban)(ban)一(yi)般按相鄰層(ceng)(ceng)木紋方(fang)向(xiang)相互垂直組培膠(jiao)(jiao)合(he)而(er)成(cheng)，一(yi)般其標板(ban)(ban)和內(nei)層(ceng)(ceng)板(ban)(ban)對稱配(pei)備在(zai)中(zhong)心(xin)層(ceng)(ceng)，縱(zong)橫方(fang)向(xiang)的(de)(de)(de)物理、機械性質差異(yi)較小。

　　膠(jiao)(jiao)合(he)(he)板密度(du)越(yue)(yue)大(da)，質量越(yue)(yue)好。一般大(da)于(yu)(yu)同材(cai)(cai)種的(de)木(mu)材(cai)(cai)。膠(jiao)(jiao)合(he)(he)時的(de)單位壓(ya)力越(yue)(yue)大(da)，則膠(jiao)(jiao)合(he)(he)板的(de)密度(du)也(ye)越(yue)(yue)大(da)。由(you)于(yu)(yu)木(mu)材(cai)(cai)在高溫下易發(fa)作塑性變形，熱(re)(re)壓(ya)膠(jiao)(jiao)合(he)(he)比冷壓(ya)膠(jiao)(jiao)合(he)(he)的(de)壓(ya)縮率要大(da)。由(you)于(yu)(yu)膠(jiao)(jiao)合(he)(he)板由(you)縱(zong)橫交(jiao)錯的(de)單板制造而(er)成，其(qi)導熱(re)(re)系(xi)數低于(yu)(yu)同材(cai)(cai)種的(de)木(mu)材(cai)(cai)。

　　膠合板(ban)(ban)(ban)的(de)外(wai)層單(dan)板(ban)(ban)(ban)稱(cheng)表(biao)(biao)板(ban)(ban)(ban)，正面的(de)表(biao)(biao)板(ban)(ban)(ban)稱(cheng)為面板(ban)(ban)(ban)，不(bu)和的(de)表(biao)(biao)板(ban)(ban)(ban)稱(cheng)為背板(ban)(ban)(ban)，內層的(de)單(dan)板(ban)(ban)(ban)稱(cheng)為芯板(ban)(ban)(ban)或(huo)中板(ban)(ban)(ban)。

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