玻(bo)璃(li)(li)鋼(FRP)亦稱作(zuo)GFRP，即纖(xian)維(wei)強化塑料(liao)，一般指用玻(bo)璃(li)(li)纖(xian)維(wei)增(zeng)強不(bu)(bu)飽和聚(ju)酯(zhi)、環(huan)氧樹(shu)(shu)脂(zhi)與酚醛樹(shu)(shu)脂(zhi)基體。以(yi)玻(bo)璃(li)(li)纖(xian)維(wei)或其制品(pin)作(zuo)增(zeng)強材料(liao)的(de)增(zeng)強塑料(liao)，稱謂為玻(bo)璃(li)(li)纖(xian)維(wei)增(zeng)強塑料(liao)，或稱謂玻(bo)璃(li)(li)鋼，注(zhu)意(yi)與鋼化玻(bo)璃(li)(li)區別開來。由于所使用的(de)樹(shu)(shu)脂(zhi)品(pin)種不(bu)(bu)同，因此有聚(ju)酯(zhi)玻(bo)璃(li)(li)鋼、環(huan)氧玻(bo)璃(li)(li)鋼、酚醛玻(bo)璃(li)(li)鋼之稱。質輕(qing)而硬，不(bu)(bu)導(dao)電，性能(neng)穩定(ding).機械(xie)強度高，回(hui)收利用少，耐腐蝕。可以(yi)代(dai)替鋼材制造(zao)機器零(ling)件和汽車、船舶外殼等。

　　玻(bo)璃(li)鋼(gang)學名(ming)纖(xian)(xian)(xian)(xian)維(wei)增(zeng)強(qiang)(qiang)塑(su)料(liao)(liao)(liao)(liao)(liao)，俗稱FRP(Fiber Reinforced Plastics)，即(ji)纖(xian)(xian)(xian)(xian)維(wei)增(zeng)強(qiang)(qiang)復(fu)合塑(su)料(liao)(liao)(liao)(liao)(liao)。根據采用(yong)的纖(xian)(xian)(xian)(xian)維(wei)不同分(fen)為玻(bo)璃(li)纖(xian)(xian)(xian)(xian)維(wei)增(zeng)強(qiang)(qiang)復(fu)合塑(su)料(liao)(liao)(liao)(liao)(liao)(GFRP)，碳纖(xian)(xian)(xian)(xian)維(wei)增(zeng)強(qiang)(qiang)復(fu)合塑(su)料(liao)(liao)(liao)(liao)(liao)(CFRP)，硼纖(xian)(xian)(xian)(xian)維(wei)增(zeng)強(qiang)(qiang)復(fu)合塑(su)料(liao)(liao)(liao)(liao)(liao)等。它是(shi)以(yi)玻(bo)璃(li)纖(xian)(xian)(xian)(xian)維(wei)及其(qi)制品(玻(bo)璃(li)布、帶(dai)、氈(zhan)、紗)作(zuo)(zuo)為增(zeng)強(qiang)(qiang)材(cai)(cai)(cai)料(liao)(liao)(liao)(liao)(liao)，以(yi)合成(cheng)樹脂(zhi)作(zuo)(zuo)基(ji)體(ti)材(cai)(cai)(cai)料(liao)(liao)(liao)(liao)(liao)的一種復(fu)合材(cai)(cai)(cai)料(liao)(liao)(liao)(liao)(liao)。纖(xian)(xian)(xian)(xian)維(wei)增(zeng)強(qiang)(qiang)復(fu)合材(cai)(cai)(cai)料(liao)(liao)(liao)(liao)(liao)是(shi)由增(zeng)強(qiang)(qiang)纖(xian)(xian)(xian)(xian)維(wei)和(he)基(ji)體(ti)組成(cheng)。纖(xian)(xian)(xian)(xian)維(wei)(或晶(jing)須)的直徑很(hen)(hen)小(xiao)，一般在10μm以(yi)下(xia)，缺陷較(jiao)少(shao)又較(jiao)小(xiao)，斷(duan)裂應變約(yue)為千(qian)分(fen)之三(san)十(shi)以(yi)內，是(shi)脆性材(cai)(cai)(cai)料(liao)(liao)(liao)(liao)(liao)，易損傷、斷(duan)裂和(he)受(shou)到腐蝕。基(ji)體(ti)相對于纖(xian)(xian)(xian)(xian)維(wei)來(lai)說，強(qiang)(qiang)度、模量(liang)都要低(di)很(hen)(hen)多(duo)，但可以(yi)經受(shou)住大的應變，往往具(ju)有粘彈性和(he)彈塑(su)性，是(shi)韌性材(cai)(cai)(cai)料(liao)(liao)(liao)(liao)(liao)。