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                                                                                                                                                                                                        1. 歡迎訪問深圳市萬信居防水工程有限公司!
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                                                                                                                                                                                                          深圳市萬信居防水工程有限公司
                                                                                                                                                                                                          聯系人:魏先生
                                                                                                                                                                                                          電話:18825265645
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                                                                                                                                                                                                          單層防水材料的特點
                                                                                                                                                                                                          發布人:客服   發表日期:2016-03-29 03-39-00

                                                                                                                                                                                                          地下工程工程屬于隱蔽工程,不易發現其隱患,因此就需要高度重視。過去的幾年里,疊層防水系統用量的減少使單層防水卷材走強。用于地下防水的單層材料可分為彈性體材料和熱塑性材料兩類。而熱塑性材料又有3種不同的組成:聚氯乙烯(PVC)、氯化聚乙烯(CPE)和氯磺化聚乙烯(CSPE),而為突出的單層防水材料是丁基橡膠和專門配制的PVC卷材,以下進行詳細介紹。

                                                                                                                                                                                                            丁基橡膠是一種叫聚異丁烯的合成橡膠,適用于地下和隱蔽的防水工程。作為一種防水材料,丁基橡膠優于其他合成橡膠在于其只有l%~2%的吸水性。而使用廣泛的EPDM吸水率為4%。另外,丁基橡膠具有極為優異的氣密性,僅為0.025perm,而EPDM為0.05perm.在其他性能方面除了抗紫外線外。這兩種材料大體相當。雖然EPDM的抗紫外線性能更好。但這個性能在地下防水工程中是不需要的。丁基橡膠具有很好的抗細菌、霉菌和土壤化合物的作用,這些在地下防水工程中經常會遇到。

                                                                                                                                                                                                            在地下及隱蔽的防水工程中使用的丁基橡膠卷材厚度在1.5—3.0mm.丁基橡膠適用于全部3種防水情況:置于結構上的板、置于地面上的板和基礎墻。施工方法主要是全粘。但是對置于結構上的板和置于地面上的板也可以用松鋪法。在混凝土基層上施工時要求表面平整光滑。在水平面上施工時,先將卷材鋪開使其松弛,然后再鋪到涂了制造商認可的粘結劑的基層上。粘結劑應當符合制造商新的技術要求。所有的接縫都要求用厚1.5mm的蓋縫帶。丁基橡膠卷材在置于地面上的板上施工時,可以用松鋪法,先將卷材打開使其松弛,再在接縫處加鋪蓋縫帶。卷材上面要鋪保護板防止卷材被刺破。所用的保護板要經制造商認可。丁基橡膠卷材在垂直面上使用時,要用全粘法施工。

                                                                                                                                                                                                            用于地下及隱蔽防水工程的PVC卷材厚度在1.5~3.0mm之間。與屋面用的PVC卷材在厚度(1.1~1.5mm)和化學組成上不同。屋面用的PVC卷材加了增塑劑作為紫外線的穩定劑。地下防水用的則不加。但加了填料以提高抗霉菌、堿和其他土壤化合物的性能。與其他熱塑性材料相比,PVC具有對防水十分重要的明顯的優點。其滲透率和吸水率是所有熱塑性材料中吸水率僅為2%,而氯磺化聚乙烯和其他熱塑性材料要高許多。PVC卷材通常用無紡玻纖織物增強。大大提高了卷材的抗拉強度和耐穿刺性。還有一個主要的優點是其熱焊縫強度可以與材料本身強度相當。

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                                                                                                                                                                                                          深圳市萬信居防水工程有限公司
                                                                                                                                                                                                          聯系人:魏先生
                                                                                                                                                                                                          電話:18825265645
                                                                                                                                                                                                          郵箱:1239625114@qq.com
                                                                                                                                                                                                          網址:www.www.elenco-sitiweb.com
                                                                                                                                                                                                          地址:深圳市南山區南山街道常興路1號順天大廈11A
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