自(zi)控溫(wen)(wen)電(dian)(dian)熱帶采用(yong)功能(neng)性(xing)復合(he)高(gao)分子導(dao)(dao)電(dian)(dian)材(cai)料，可(ke)以感(gan)知(zhi)溫(wen)(wen)度(du)變化而改變自(zi)身形態(tai)，從而達(da)到控溫(wen)(wen)目(mu)的(de)。在兩根平行的(de)金(jin)屬線間(jian)均勻地擠塑(su)導(dao)(dao)電(dian)(dian)高(gao)分子復合(he)材(cai)料，在外護套(tao)上(shang)再包一層絕緣(yuan)護套(tao)。

　　電伴熱帶在自控溫上的原理表現：
　　電(dian)(dian)(dian)(dian)(dian)伴熱帶接通，把其(qi)他(ta)形式的(de)能(neng)轉換成電(dian)(dian)(dian)(dian)(dian)能(neng)的(de)裝(zhuang)置叫做電(dian)(dian)(dian)(dian)(dian)源由一根(gen)導(dao)線經過導(dao)電(dian)(dian)(dian)(dian)(dian)高分子(zi)材料(liao)到另(ling)一根(gen)導(dao)線形成回路，使材料(liao)升(sheng)(sheng)溫。隨著溫度升(sheng)(sheng)至某值后，聚(ju)合結晶(jing)物(wu)體積膨脹，導(dao)電(dian)(dian)(dian)(dian)(dian)粒子(zi)之間的(de)距離增大，造成電(dian)(dian)(dian)(dian)(dian)阻迅速增大至幾乎阻斷電(dian)(dian)(dian)(dian)(dian)流的(de)程度，其(qi)溫度不再升(sheng)(sheng)高，這種(zhong)現(xian)象稱(cheng)為正(zheng)電(dian)(dian)(dian)(dian)(dian)阻的(de)溫度系數(shu)(shu)">溫度系數(shu)(shu)的(de)ＰＴＣ效應，能(neng)根(gen)據環境(jing)溫度輸出功率(lv)。