玻(bo)璃(li)(li)鋼(gang)(gang)(FRP)亦(yi)稱作(zuo)GFRP，即纖(xian)維強(qiang)(qiang)(qiang)化塑料，一般(ban)指用(yong)玻(bo)璃(li)(li)纖(xian)維增強(qiang)(qiang)(qiang)不(bu)飽和聚酯(zhi)、環(huan)氧樹(shu)脂(zhi)與酚醛樹(shu)脂(zhi)基體。以玻(bo)璃(li)(li)纖(xian)維或其制(zhi)品作(zuo)增強(qiang)(qiang)(qiang)材料的增強(qiang)(qiang)(qiang)塑料，稱謂為玻(bo)璃(li)(li)纖(xian)維增強(qiang)(qiang)(qiang)塑料，或稱謂玻(bo)璃(li)(li)鋼(gang)(gang)，注意與鋼(gang)(gang)化玻(bo)璃(li)(li)區別開(kai)來。由(you)于所使(shi)用(yong)的樹(shu)脂(zhi)品種不(bu)同，因(yin)此有(you)聚酯(zhi)玻(bo)璃(li)(li)鋼(gang)(gang)、環(huan)氧玻(bo)璃(li)(li)鋼(gang)(gang)、酚醛玻(bo)璃(li)(li)鋼(gang)(gang)之稱。質輕而硬，不(bu)導電，性能穩(wen)定(ding).機械強(qiang)(qiang)(qiang)度高，回收利用(yong)少，耐腐蝕。可以代替鋼(gang)(gang)材制(zhi)造機器零(ling)件和汽車、船舶外殼等。

　　玻(bo)(bo)璃(li)鋼學名纖(xian)(xian)(xian)維(wei)增(zeng)(zeng)(zeng)強(qiang)(qiang)塑(su)料(liao)(liao)(liao)，俗稱FRP(Fiber Reinforced Plastics)，即纖(xian)(xian)(xian)維(wei)增(zeng)(zeng)(zeng)強(qiang)(qiang)復(fu)合(he)塑(su)料(liao)(liao)(liao)。根(gen)據采用的纖(xian)(xian)(xian)維(wei)不同分為玻(bo)(bo)璃(li)纖(xian)(xian)(xian)維(wei)增(zeng)(zeng)(zeng)強(qiang)(qiang)復(fu)合(he)塑(su)料(liao)(liao)(liao)(GFRP)，碳纖(xian)(xian)(xian)維(wei)增(zeng)(zeng)(zeng)強(qiang)(qiang)復(fu)合(he)塑(su)料(liao)(liao)(liao)(CFRP)，硼纖(xian)(xian)(xian)維(wei)增(zeng)(zeng)(zeng)強(qiang)(qiang)復(fu)合(he)塑(su)料(liao)(liao)(liao)等(deng)。它是(shi)以(yi)(yi)玻(bo)(bo)璃(li)纖(xian)(xian)(xian)維(wei)及其制(zhi)品(pin)(玻(bo)(bo)璃(li)布、帶、氈、紗等(deng))作為增(zeng)(zeng)(zeng)強(qiang)(qiang)材(cai)(cai)料(liao)(liao)(liao)，以(yi)(yi)合(he)成(cheng)(cheng)樹(shu)脂作基(ji)體(ti)材(cai)(cai)料(liao)(liao)(liao)的一種復(fu)合(he)材(cai)(cai)料(liao)(liao)(liao)。纖(xian)(xian)(xian)維(wei)增(zeng)(zeng)(zeng)強(qiang)(qiang)復(fu)合(he)材(cai)(cai)料(liao)(liao)(liao)是(shi)由增(zeng)(zeng)(zeng)強(qiang)(qiang)纖(xian)(xian)(xian)維(wei)和(he)基(ji)體(ti)組成(cheng)(cheng)。纖(xian)(xian)(xian)維(wei)(或晶須)的直徑很(hen)小，一般在(zai)10μm以(yi)(yi)下(xia)，缺(que)陷較少又較小，斷(duan)裂(lie)應變約為千分之三(san)十以(yi)(yi)內，是(shi)脆性材(cai)(cai)料(liao)(liao)(liao)，易損(sun)傷(shang)、斷(duan)裂(lie)和(he)受(shou)到腐蝕。基(ji)體(ti)相對于纖(xian)(xian)(xian)維(wei)來說，強(qiang)(qiang)度(du)、模量都(dou)要低很(hen)多，但可以(yi)(yi)經受(shou)住大(da)的應變，往往具有粘彈(dan)性和(he)彈(dan)塑(su)性，是(shi)韌性材(cai)(cai)料(liao)(liao)(liao)。