复合土工膜_HDPE土工膜_膨润土防水毯-山东建通专业生产

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沼气池专用土工膜

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1•●、HDPE土工膜是一种柔性防水材料,具有很高的防渗系数(1×10-17 cm/s);
2•●、HDPE土工膜具有良好的耐热性和耐寒性,其使用环境温度为高温110℃•●、低温-70℃;
3•●、HDPE土工膜具有很好的化学稳定性能,能抗强酸•●、碱•●、油的腐蚀是好的防腐材料;
4•●、HDPE土工膜具有很高的抗张力强度,使它具有很高的抗拉强度能满足高标准工程项目需要;
5•●、HDPE土工膜具有很强的耐候性,有很强的抗老化性能,能长时间裸露使用而保持原来的性能;
6•●、HDPE土工膜的整体性能,HDPE土工膜有很强的抗拉强度与断裂伸长率,使HDPE土工膜能够在各种不同的恶劣地质与气候条件下使用。适应地质不均匀沉降应变力强 !
7•●、HDPE土工膜采用优质原生塑料与碳黑粒子不含任何防腐剂,HDPE已被我国用来取代PVC作为食品包装袋和保鲜膜原料。


Geomembrane welding
The welding process is divided into 1. hot wedge welder: pressure regulator set temperature speed lap seam check loaded film into the machine to start the motor pressure welding.
2. joints may not have oil, dust, HDPE geomembrane overlap section should not be caught with sediment and other debris, when there is debris, must be cleaned before welding.
The 3. day at the start of welding, welding test sample must be at the scene of a 0.9mm * 0.3mm, lap width not less than 10cm, and the peel and shear by tension machine in the field, after passing the sample, can be used to adjust the speed, the pressure and temperature of welding is. The sample should indicate the date and time, the environment temperature. Hot cut in welding, should pay attention on welding operation, to fine tune the speed and temperature according to the actual situation of the.
4. weld is neat and beautiful, no sliding welding, jump phenomenon.
5., when the length of geomembrane is not enough, it needs long splicing, and the transverse weld should be welded first and then welded longitudinally. The transverse weld should be T type and 50cm cross shaped.
The welds of 6. adjacent geomembrane should be spliced as possible as possible, and the joints formed between the membrane blocks should be T type, and the cross type should be reduced as much as possible, and the longitudinal die should be strengthened with the extrusion welding machine at the intersection point of the weld.
When the 7. welding film is not extruded and broken, when the HDPE geomembrane is laid, according to the local temperature change range and the HDPE geomembrane performance requirements, the expansion deion caused by the temperature change is reserved.
Welding temperature of 8. temperature control when the portable welder indicated less than 200 degrees, with a clean cloth or cotton dust and welding, when necessary, should be re grinding, hand rub avoid.
9. when the joint is damp, condensation, sediment and other effects, treatment after welding.
Not 10. during periods of rain or seams are moisture, dew, or sand under the condition of welding, but take protective measures are excluded.
11. when the temperature is below 5 degrees, the construction should not be carried out according to the specifications. If the construction must be carried out, the welding machine should be preheated before welding.
12. extrusion welding machine in welding process should always check the head of the slider, wear more serious should change the slider in time, so as not to damage the film surface.
13. geomembrane should be used in the welding of the generator with good performance of power supply, under special circumstances, the use of local power, must use regulators.
土工膜的焊接
1.热锲焊机焊接工序分为:调节压力 设定温度 设定速度 焊缝搭接检查 装膜入机 启动马达 加压焊接。
2.接缝处不得有油污•●、灰尘,HDPE土工膜的搭接段面不应夹有泥沙等杂物,当有杂物时必须在焊接前清理干净。
3.每天焊接开始时,必须在现场先试焊一条0.9mm×0.3mm的试样,搭接宽度不小于10cm,并用拉力机现场进行剥离和剪切试验,试样合格后,便可用当时调整好的速度•●、压力•●、温度进行正是焊接。试样上需标明日期•●、时刻•●、环境温度。热锲焊机在焊接过程中,需随时注意焊机的运行情况,要根据现场的实际情况对速度和温度进行微调。
4.焊缝要求整齐•●、美观•●、不得有滑焊•●、跳走现象。
5.在遇上土工膜长度不够时,需要长向拼接,应先把横向焊缝焊好,再焊纵缝,横向焊缝相距大于50cm应成T字型,不得十字交叉。
6.相邻土工膜焊缝应尽量错缝搭接,膜块间形成的结点,应为T字型,尽量减少十字型,纵模向焊缝交点处应用挤压焊机加强。
7.焊膜时不许压出死折,铺设HDPE土工膜时,根据当地气温变化幅度和HDPE土工膜性能要求,预留出温度变化引起的伸缩变形量。
8.当手提焊机的温度控制所指示的焊机温度低于200℃时,要用干净的布或棉纱掸掉再焊,必要时应重新打磨,切忌用手擦试。
9.当接缝处有结露•●、潮湿•●、泥沙等影响时,处理后再进行焊接。
10.在下雨期间或接缝有潮气•●、露水•●、或者大沙的情况下不能进行焊接,但采取防护措施是除外。
11.温度低于5℃时,按照规范要求不应施工,如果必须施工的话,焊接前应对焊机进行预热处理。
12.挤压焊接机在焊接过程中,应该经常检查枪头的滑块,磨损较严重时应及时更换滑块,以免损伤膜面。
13.土工膜在焊接时应该采用稳压性能好的发电机供电,在特殊情况下采用当地用电时,必须使用稳压器。

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