亞克(ke)力板

材的(de)規(gui)格種類很多。普(pu)通板(ban)(ban)有(you)：透(tou)明板(ban)(ban)，染色(se)透(tou)明板(ban)(ban)，乳(ru)白板(ban)(ban)，彩色(se)板(ban)(ban)；特種板(ban)(ban)有(you)：衛浴板(ban)(ban)，云彩板(ban)(ban)，鏡面板(ban)(ban)，夾布板(ban)(ban)，中空板(ban)(ban)，抗沖(chong)板(ban)(ban)， 阻燃(ran)板(ban)(ban)，超耐磨板(ban)(ban)，表面(mian)花紋板(ban)(ban)，磨砂板(ban)(ban)，珠光板(ban)(ban)，金屬(shu)效果(guo)板(ban)(ban)等。不同的性能(neng)，不同的色彩(cai)及視覺效果(guo)以滿足千變萬化的要(yao)求。

1、亞克(ke)力板(ban)(ban)(ban)(ban)(ban)(ban)(ban)按(an)(an)生(sheng)產(chan)工(gong)藝分(fen)(fen)澆鑄(zhu)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)和擠壓板(ban)(ban)(ban)(ban)(ban)(ban)(ban)，按(an)(an)透(tou)(tou)光(guang)度可(ke)分(fen)(fen)為透(tou)(tou)明(ming)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)、半透(tou)(tou)明(ming)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)（包括染色(se)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)透(tou)(tou)明(ming)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)）、色(se)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)（包括黑白及彩色(se)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)）；按(an)(an)性能分(fen)(fen)抗沖擊板(ban)(ban)(ban)(ban)(ban)(ban)(ban)、抗紫(zi)外線板(ban)(ban)(ban)(ban)(ban)(ban)(ban)、普(pu)通板(ban)(ban)(ban)(ban)(ban)(ban)(ban)和特殊板(ban)(ban)(ban)(ban)(ban)(ban)(ban)如高(gao)(gao)抗沖板(ban)(ban)(ban)(ban)(ban)(ban)(ban)、阻燃板(ban)(ban)(ban)(ban)(ban)(ban)(ban)、磨砂板(ban)(ban)(ban)(ban)(ban)(ban)(ban)、金(jin)屬(shu)效果(guo)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)、高(gao)(gao)耐磨板(ban)(ban)(ban)(ban)(ban)(ban)(ban)、導光(guang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)等(deng)。

A：澆鑄板：分子量(liang)高，具(ju)有出色的剛度、強度以及優(you)異的抗化學品性能。因而比較適合加工大尺寸的標識牌匾，相對在軟(ruan)化過程(cheng)中時間稍長。這種板材的特點是小批(pi)量(liang)加工，在顏色體(ti)系和表面(mian)紋理效果方面(mian)有無法比擬(ni)的靈活性，且產(chan)品規格齊全，實用(yong)于各種特殊用(yong)途。

B：擠壓(ya)板(ban)：與澆鑄(zhu)板(ban)相(xiang)比，擠壓(ya)板(ban)分子量(liang)較(jiao)低，機(ji)械性(xing)(xing)能稍弱，柔性(xing)(xing)比較(jiao)高。然而，這一特(te)點有利于(yu)折彎和(he)熱(re)成(cheng)型加工，軟化(hua)(hua)時間(jian)較(jiao)短(duan)。在處(chu)理(li)(li)尺(chi)寸較(jiao)大(da)的(de)板(ban)材時，有利于(yu)各種快(kuai)速真空吸塑成(cheng)型。同時，擠壓(ya)板(ban)的(de)厚度公(gong)差比澆鑄(zhu)板(ban)小(xiao)。由(you)于(yu)擠壓(ya)板(ban)是大(da)批量(liang)自動化(hua)(hua)生產(chan)，顏色(se)和(he)規格(ge)不便調(diao)理(li)(li)，所以產(chan)品規格(ge)多樣性(xing)(xing)受到一定(ding)的(de)限制。

2、亞克(ke)力還(huan)有一種(zhong)叫回料(liao)再(zai)生(sheng)板是采用回收亞克(ke)力邊(bian)角料(liao)，經過熱降解后得到再(zai)生(sheng)MMA（甲基丙烯酸甲酯）單體(ti)，再由化學聚合反(fan)應之后(hou)得來。經過(guo)嚴(yan)格的工(gong)藝(yi)流(liu)程，可以重新得到純凈(jing)的MMA單(dan)體(ti)，與(yu)新(xin)合成單(dan)體(ti)，品質上沒(mei)有任(ren)何(he)區別。但生(sheng)產(chan)出(chu)來的降解單(dan)體(ti)，純度不高，板(ban)材(cai)成型后(hou)，其品質、性能(neng)很差(cha)。

總結：擠壓板(ban)使用顆(ke)粒(li)原料，經過高溫溶解后擠壓成型(xing)，而(er)澆鑄板(ban)是用MMA單體（液(ye)態）直接澆(jiao)(jiao)鑄(zhu)成型(xing)，雖然擠(ji)壓(ya)板(ban)(ban)外(wai)(wai)(wai)(wai)形(xing)上較為平(ping)整(zheng)光潔，但(dan)因其在(zai)顆粒(li)原料成型(xing)時以(yi)完(wan)成聚合(he)。在(zai)加工成板(ban)(ban)材時其結(jie)構、性能(neng)較弱，并不(bu)(bu)適(shi)合(he)作(zuo)為戶(hu)外(wai)(wai)(wai)(wai)標識產(chan)品的材料，只(zhi)適(shi)合(he)作(zuo)水晶字或產(chan)品支架等戶(hu)內產(chan)品。另(ling)外(wai)(wai)(wai)(wai)由于擠(ji)壓(ya)板(ban)(ban)多數不(bu)(bu)具(ju)防(fang)紫(zi)(zi)外(wai)(wai)(wai)(wai)線功能(neng)，其戶(hu)外(wai)(wai)(wai)(wai)使用的壽命(ming)與澆(jiao)(jiao)鑄(zhu)板(ban)(ban)不(bu)(bu)可同(tong)日而語，顏色會漸(jian)褪并且很容易脆(cui)化，直至破裂。澆(jiao)(jiao)鑄(zhu)板(ban)(ban)是在(zai)板(ban)(ban)材加工過(guo)程中完(wan)成結(jie)構聚合(he)，其間(jian)加入紫(zi)(zi)外(wai)(wai)(wai)(wai)線吸(xi)收劑，具(ju)有極高的強度和(he)UV功能，戶(hu)外使用壽命長達5年以上甚至10年，使用(yong)期間(jian)色澤一直亮麗如新。

工藝特(te)性

1、聚甲基丙烯酸甲酯含有(you)極(ji)性(xing)側甲(jia)基，具有(you)較明顯的(de)吸濕性(xing)，吸水率一般在0.3%-0.4%，成型前(qian)必須干燥，干燥條件是80℃-85℃下(xia)干燥4-5h 。

2、聚甲基丙烯酸甲酯在成型加工(gong)的溫(wen)度范(fan)圍內(nei)具有效(xiao)明顯的非牛頓流體特性，熔融粘度(du)(du)隨剪(jian)切速率增(zeng)大會明顯下降，熔體粘度(du)(du)對溫度(du)(du)的變(bian)化也很敏感。因(yin)此，對于聚甲基(ji)丙(bing)烯(xi)酸(suan)甲酯(zhi)的成型加工，提高成型壓力和溫(wen)度都可(ke)明顯降低熔體粘度，取(qu)得較好的流動性。

3、聚甲(jia)(jia)基丙烯酸(suan)甲(jia)(jia)酯開(kai)始(shi)流(liu)動的溫度約160℃，開始分解的溫度高于270℃，具(ju)有(you)較寬(kuan)的(de)加(jia)工溫度區間。

4、聚甲(jia)基丙烯(xi)酸(suan)甲(jia)酯熔體粘(zhan)度較高(gao)，冷卻速率又較快(kuai)，制(zhi)品容易產生內(nei)應力，因此成型時對工藝條件控(kong)制(zhi)要求(qiu)嚴格，制(zhi)品成型后(hou)也需要進行后(hou)處(chu)理。

5、聚甲基丙烯酸甲酯是無(wu)定形聚合物，收縮率及其變化范圍都較小，一般約在(zai)0.5%-0.8%，有利于(yu)成型(xing)出(chu)尺寸精度較高的塑件。

6、聚甲基丙烯酸甲酯切削性(xing)能甚好(hao)，其型材可很容易地機加工為(wei)各種要求的尺寸。