玻璃纖維管是用(yong)無堿(jian)玻璃纖維織成管狀后(hou)，涂上硅樹脂，經高溫處理完成的(de)。它(ta)具(ju)有良(liang)好的(de)介電(dian)性(xing)能(neng)，以(yi)及良(liang)好的(de)柔(rou)軟性(xing)、阻燃性(xing)和(he)耐溫性(xing)。廣泛應用(yong)于電(dian)機、家用(yong)電(dian)器、電(dian)熱設備、電(dian)子部(bu)件及集(ji)束電(dian)線的(de)絕(jue)熱、絕(jue)緣(yuan)等。
; 生產技術:
玻璃纖維管在塑(su)料(liao)(liao)(liao)(liao)(liao)注(zhu)(zhu)射(she)成(cheng)(cheng)型(xing)(xing)(xing)(xing)中的(de)應用當熱(re)固(gu)性(xing)(xing)(xing)塑(su)料(liao)(liao)(liao)(liao)(liao)注(zhu)(zhu)射(she)成(cheng)(cheng)型(xing)(xing)(xing)(xing)(也(ye)稱為(wei)擠出成(cheng)(cheng)型(xing)(xing)(xing)(xing))或熱(re)塑(su)性(xing)(xing)(xing)塑(su)料(liao)(liao)(liao)(liao)(liao)注(zhu)(zhu)射(she)成(cheng)(cheng)型(xing)(xing)(xing)(xing)時(shi)(shi)(shi)(shi)，如(ru)果(guo)零(ling)件(jian)(jian)設有(you)(you)(you)嵌(qian)件(jian)(jian)或模腔設有(you)(you)(you)用于形成(cheng)(cheng)孔的(de)型(xing)(xing)(xing)(xing)芯(xin)，當熔融塑(su)料(liao)(liao)(liao)(liao)(liao)圍繞這(zhe)(zhe)些嵌(qian)件(jian)(jian)或型(xing)(xing)(xing)(xing)芯(xin)流(liu)(liu)動(dong)(dong)(dong)以填(tian)充模具(ju)時(shi)(shi)(shi)(shi)，在零(ling)件(jian)(jian)上的(de)材(cai)料(liao)(liao)(liao)(liao)(liao)流(liu)(liu)動(dong)(dong)(dong)匯(hui)合(he)處(chu)將產(chan)生熔合(he)線(或熔合(he)縫)。假如(ru)產(chan)成(cheng)(cheng)品(pin)的(de)成(cheng)(cheng)型(xing)(xing)(xing)(xing)磨具(ju)中有(you)(you)(you)2個左右(you)的(de)入料(liao)(liao)(liao)(liao)(liao)口(kou)，在成(cheng)(cheng)型(xing)(xing)(xing)(xing)全過程中，在雙股流(liu)(liu)的(de)匯(hui)合(he)處(chu)也(ye)會造成(cheng)(cheng)焊(han)(han)接(jie)。焊(han)(han)接(jie)的(de)沖(chong)(chong)擊韌性(xing)(xing)(xing)遠遠地(di)小于零(ling)部件(jian)(jian)的(de)其(qi)余部分。當鋼件(jian)(jian)遭受震(zhen)動(dong)(dong)(dong)、沖(chong)(chong)擊性(xing)(xing)(xing)或工(gong)作溫度轉變(bian)時(shi)(shi)(shi)(shi)，鋼件(jian)(jian)非常(chang)容易(yi)從焊(han)(han)接(jie)處(chu)裂(lie)開。有(you)(you)(you)時(shi)(shi)(shi)(shi)候，即便在一切(qie)正常(chang)存儲標(biao)準(zhun)下，鋼件(jian)(jian)也(ye)是從焊(han)(han)接(jie)處(chu)裂(lie)開。非常(chang)是針對熱(re)固(gu)性(xing)(xing)(xing)塑(su)料(liao)(liao)(liao)(liao)(liao)，當嵌(qian)件(jian)(jian)或型(xing)(xing)(xing)(xing)芯(xin)杜(du)絕進(jin)膠(jiao)口(kou)或是嵌(qian)件(jian)(jian)或型(xing)(xing)(xing)(xing)芯(xin)的(de)規格相對性(xing)(xing)(xing)很(hen)大時(shi)(shi)(shi)(shi)，嵌(qian)件(jian)(jian)或型(xing)(xing)(xing)(xing)芯(xin)周邊的(de)熔化塑(su)料(liao)(liao)(liao)(liao)(liao)流(liu)(liu)動(dong)(dong)(dong)性(xing)(xing)(xing)較(jiao)長，干固(gu)反(fan)映開展(zhan)得相對性(xing)(xing)(xing)較(jiao)深，而且原材(cai)料(liao)(liao)(liao)(liao)(liao)的(de)流(liu)(liu)通性(xing)(xing)(xing)和熔化性(xing)(xing)(xing)較(jiao)弱。在這(zhe)(zhe)種情況下，商品(pin)焊(han)(han)接(jie)處(chu)的(de)抗壓強度較(jiao)低，因而裂(lie)痕更有(you)(you)(you)將會產(chan)生在焊(han)(han)接(jie)處(chu)。
商品(pin)上(shang)的(de)(de)(de)電(dian)磁線(xian)(xian)圈底座(zuo)是用(yong)酚醛樹脂玻(bo)(bo)纖塑料沖壓(ya)模(mo)具(ju)成(cheng)(cheng)型(xing)(xing)的(de)(de)(de)。制件(jian)(jian)上(shang)設有(you)M6x0.5的(de)(de)(de)內螺紋(wen)(wen)孔(kong)，并帶有(you)4個金屬嵌件(jian)(jian)“接線(xian)(xian)柱”。那(nei)件(jian)(jian)衣(yi)服褲子的(de)(de)(de)壁相對性較(jiao)薄，至少(shao)1mm含有(you)成(cheng)(cheng)型(xing)(xing)孔(kong)的(de)(de)(de)外螺紋(wen)(wen)型(xing)(xing)芯安裝在打(da)針(zhen)磨(mo)(mo)具(ju)中(zhong)。磨(mo)(mo)具(ju)選用(yong)側澆(jiao)口入料，每一模(mo)具(ju)沖壓(ya)成(cheng)(cheng)型(xing)(xing)2片。該商品(pin)成(cheng)(cheng)形后(hou)的(de)(de)(de)重特大缺(que)陷其一是出(chu)模(mo)后(hou)零部(bu)件(jian)(jian)拼(pin)裝和(he)總(zong)拼(pin)裝時便于從(cong)焊(han)接線(xian)(xian)上(shang)撕破。水閘部(bu)位和(he)出(chu)現裂痕的(de)(de)(de)一部(bu)分見圖。以便處理基座(zuo)零部(bu)件(jian)(jian)的(de)(de)(de)裂開難(nan)題，采用(yong)了(le)提(ti)升(sheng)磨(mo)(mo)具(ju)澆(jiao)口的(de)(de)(de)深層和(he)總(zong)寬、提(ti)升(sheng)成(cheng)(cheng)形時的(de)(de)(de)工(gong)作壓(ya)力、降低(di)脫膜劑的(de)(de)(de)使用(yong)量(在磨(mo)(mo)具(ju)不卡死的(de)(de)(de)狀況下(xia))及其在磨(mo)(mo)具(ju)上(shang)切冷料孔(kong)等對策，但(dan)實際效果不顯著。因而，根(gen)據(ju)試驗，在注塑成(cheng)(cheng)型(xing)(xing)全過程中(zhong)，將預浸脲醛樹脂的(de)(de)(de)玻(bo)(bo)纖防水套管加上(shang)到磨(mo)(mo)具(ju)的(de)(de)(de)螺紋(wen)(wen)芯中(zhong)，使玻(bo)(bo)纖防水套管成(cheng)(cheng)型(xing)(xing)后(hou)與制件(jian)(jian)變成(cheng)(cheng)一體化，處理了(le)制件(jian)(jian)從(cong)焊(han)接裂開的(de)(de)(de)難(nan)題。
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