1、PPR管为什么(me)存在低温脆性?PP-R是无(wu)规共(gong)聚聚丙烯(xi),也就是我们所(suo)说的Ⅲ型聚丙烯(xi)。它是由丙烯(xi)单体和少量乙(yi)(yi)烯(xi)单体在加(jia)热、加(jia)压(ya)和催(cui)化(hua)剂作用(yong)下(xia)无(wu)规共(gong)聚得到(dao)的。乙(yi)(yi)烯(xi)单体随机地分布到(dao)丙烯(xi)长链中(zhong)(zhong),其中(zhong)(zhong)乙(yi)(yi)烯(xi)单体一般(ban)控制(zhi)在3-5%之间。乙(yi)(yi)烯(xi)含量和乙(yi)(yi)烯(xi)与丙烯(xi)的聚合方式决定(ding)了...
管(guan)(guan)(guan)道漏水(shui)怎(zen)么(me)处(chu)理管(guan)(guan)(guan)道漏水(shui)怎(zen)么(me)处(chu)理1、如果是(shi)PVC水(shui)管(guan)(guan)(guan),可(ke)以买(mai)(mai)一根水(shui)管(guan)(guan)(guan)重新接,先把漏水(shui)的管(guan)(guan)(guan)子(zi)割断,把接口先套(tao)进管(guan)(guan)(guan)子(zi)一端(duan)(duan),使(shi)另外一端(duan)(duan)与(yu)接口齐平,使(shi)它(ta)刚好(hao)能够弄直(zhi),再用胶水(shui)涂抹(mo)在直(zhi)接两端(duan)(duan)内侧与(yu)两个下(xia)水(shui)管(guan)(guan)(guan)外侧。2、可(ke)以买(mai)(mai)防水(shui)胶带来(lai)修补(bu)下(xia)水(shui)管(guan)(guan)(guan),缠住就行,再用砂浆防水(shui)剂(ji)和...
如今大家(jia)生(sheng)活水平提高了(le),出门有车,吃(chi)饭有肉。但是,不(bu)知不(bu)觉高血(xue)压、糖尿(niao)病(bing)、高血(xue)脂等富贵病(bing)也随(sui)之而来(lai),这些疾病(bing)跟血(xue)管(guan)(guan)健康(kang)息(xi)息(xi)相(xiang)关,富贵病(bing)控制不(bu)好(hao),就可能导致血(xue)管(guan)(guan)堵塞。血(xue)管(guan)(guan)一旦发(fa)生(sheng)“拥堵”,轻(qing)则引(yin)起(qi)疾病(bing),重则致死。血(xue)管(guan)(guan)只堵20%~50%,动脉硬化的斑块(kuai)有时也会突然...
每个(ge)工(gong)程的(de)好坏,都是由各个(ge)小细(xi)节决定的(de),因(yin)此,根据本人(ren)的(de)一(yi)些工(gong)作经验,加之以借鉴(jian)他(ta)人(ren)的(de)经验,给大(da)(da)家总结(jie)了一(yi)下给排水管道施(shi)(shi)工(gong)的(de)不(bu)该(gai)出现的(de)问题,并(bing)对其详细(xi)的(de)分析了原因(yin),并(bing)提(ti)出了一(yi)些解(jie)决措施(shi)(shi)!给大(da)(da)家做参考!一(yi)、雨水管不(bu)该(gai)用伸缩节、管箍连接(jie)原因(yin):因(yin)雨水管本身壁厚较(jiao)薄,...
城市(shi)排水(shui)(shui)管(guan)道(dao)清(qing)通养(yang)护的方法(fa)主要分为(wei)两大(da)类别:清(qing)洗和疏通。1、城市(shi)排水(shui)(shui)管(guan)道(dao)清(qing)通养(yang)护中(zhong)清(qing)洗的原理:即(ji)用人为(wei)的方法(fa),提高管(guan)道(dao)中(zhong)的水(shui)(shui)头差、增加(jia)水(shui)(shui)流(liu)压力、加(jia)大(da)流(liu)速(su)和流(liu)量来清(qing)洗管(guan)道(dao)的沉积物,这就是(shi)说,用较大(da)流(liu)速(su)来分散或冲刷掉管(guan)道(dao)中(zhong)污(wu)(wu)水(shui)(shui)可推(tui)移的沉积物,用较大(da)流(liu)量挟(xie)带输送污(wu)(wu)水(shui)(shui)...
水(shui)地(di)暖因其舒适节能(neng)的(de)(de)特性受(shou)到很(hen)多人(ren)的(de)(de)青睐(lai)。因为(wei)水(shui)地(di)暖需(xu)要施(shi)工(gong)安(an)装,如果您(nin)希望能(neng)在今年冬天就用上水(shui)地(di)暖的(de)(de)话,现在就需(xu)要考虑选购安(an)装问题。作(zuo)为(wei)水(shui)地(di)暖的(de)(de)最重(zhong)要的(de)(de)组(zu)成部分——地(di)暖管(guan),您(nin)又了解多少(shao)呢?今天,就随小编一(yi)起来了解一(yi)下地(di)暖界传说中的(de)(de)性价比之(zhi)王——PR-RT管(guan)道(dao)...
管(guan)(guan)道(dao)(dao)(dao)(dao)是由管(guan)(guan)道(dao)(dao)(dao)(dao)组成(cheng)件(jian)(jian)(jian)(jian)(jian)和(he)管(guan)(guan)道(dao)(dao)(dao)(dao)支(zhi)承件(jian)(jian)(jian)(jian)(jian)组成(cheng)的管(guan)(guan)路系(xi)统。管(guan)(guan)道(dao)(dao)(dao)(dao)组成(cheng)件(jian)(jian)(jian)(jian)(jian)是用于连接或装配管(guan)(guan)道(dao)(dao)(dao)(dao)的元件(jian)(jian)(jian)(jian)(jian),包括(kuo)管(guan)(guan)子、法兰、垫片、紧固件(jian)(jian)(jian)(jian)(jian)、阀门以及(ji)膨胀接头(tou)(tou)、挠性(xing)接头(tou)(tou)、耐压软管(guan)(guan)、疏水器、过滤器、和(he)分离器等;管(guan)(guan)道(dao)(dao)(dao)(dao)支(zhi)承件(jian)(jian)(jian)(jian)(jian)管(guan)(guan)道(dao)(dao)(dao)(dao)安装件(jian)(jian)(jian)(jian)(jian)和(he)付着件(jian)(jian)(jian)(jian)(jian)的总(zong)称。其中安装件(jian)(jian)(jian)(jian)(jian)是将(jiang)负荷(he)从(cong)管(guan)(guan)子或管(guan)(guan)道(dao)(dao)(dao)(dao)付着件(jian)(jian)(jian)(jian)(jian)上传递到...
在厨房(fang)内将烹饪(ren)区(qu)与操作区(qu)别隔(ge)(ge)离(li),也是隔(ge)(ge)绝(jue)油烟的(de)(de)(de)办(ban)法之(zhi)一。本(ben)来中式厨房(fang)并(bing)不适(shi)合做(zuo)成敞开式,由(you)于中餐的(de)(de)(de)烹饪(ren)办(ban)法必定有很大油烟,敞开式厨房(fang)尽(jin)管美丽,但(dan)关于喜爱吃中餐的(de)(de)(de)人来说的(de)(de)(de)确不太有用(yong)。那么(me)厨房(fang)怎么(me)做(zuo)隔(ge)(ge)断呢?下面我们就来了(le)解一下具(ju)体(ti)细节吧。一、玻璃墙既通(tong)透又隔(ge)(ge)烟许(xu)多...