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Waterproofing membrane chlorinated polyethylene (CPE)

Oxidized polyethylene waterpro

Chlorinated polyethylene waterproofing membrane chlorinated polyethylene resin as the main raw material, adding a variety of chemical additives, mixing, extrusion and curing and other processing into waterproofing membrane.

★Product type and specifications
(One)Species
Products classified according to whether the composite layer, the composite layer is no N type, single-sided fiber composite for Class L fabric reinforcement for the W class. Each product category is divided into physical and chemical properties according to the type I and type II.
(Two)Specification
Coil length specifications 10m、15m、20m。
Thickness specifications 1.2mm、1.5mm、2.0mm。
Other lengths, thickness specifications agreed by both parties, not less than the thickness specification 1.2mm。


★USE
Construction of all kinds of roofing, basements, reservoirs, dams, highway tunnels, railway tunnels, bomb shelters and grain storage, waste plants, wastewater treatment construction waterproofing.

Material Properties GB12953-2003
N class web physical properties
 
No. Project
1* Tensile Strength/MPa                                 ≥ 5.0 8.0
2* Elongation at break/%                                 ≥ 200 300
3* Heat treatment size change/%                             ≤ 3.0 Portrait2.5
Lateral1.5
4* Flexibility at low temperature -20℃No cracks -25℃No cracks
5 Puncture resistance Impermeable
6 Impermeability impermeable
7 Shear adhesion state/(N/mm)                   ≥ 3.0 Or membrane damage
8 Heat aging treatment Exterior No blistering、crack、Stratified、Bonding and holes
Tensile strength change rate/% 50 ±20
-20
Variation of elongation at break/% 50 ±20
-30
Flexibility at low temperature -15℃No cracks —20℃No cracks
9 Resistance to chemical attack Tensile strength change rate/% ±30 ±20
Variation of elongation at break/% ±30 ±20
Flexibility at low temperature -15℃No cracks —20℃No cracks
10 Artificial climate Tensile strength change rate/% 50 ±20
-20
Variation of elongation at break/% 50 ±20
-30
Flexibility at low temperature -15℃No cracks —20℃No cracks
Note:Unexposed use can not be considered artificial climate accelerated aging。

Note:Wherein factory inspection items with *
Class L and W category membranes physical properties
 
No. Project
1 pull /(N/cm)                                 ≥ 70 120
2 Elongation at break/%                                 ≥ 125 250
3 Heat treatment size change rate/%                           ≤ 1
4 Flexibility at low temperature -20℃ No cracks -25℃ No cracks
5 Puncture resistance Impermeable
6 Impermeability impermeable
7 Shear adhesion state/(N/mm)           ≥ L class 3.0 Or membrane damage
W class 6.0 Or membrane damage
8 Heat aging treatment Exterior No blistering、crack、Bonding and holes
pull/(N/cm)                         ≥ 55 100
Elongation at break/%                        ≥ 100 200
Flexibility at low temperature -15℃ No cracks —20℃ No cracks
9 Resistance to chemical attack pull/(N/cm)                         ≥ 55 100
Elongation at break/%                        ≥ 100 200
Flexibility at low temperature -15℃ No cracks —20℃ No cracks
10 Artificial climate accelerated aging pull/(N/cm)                        ≥ 55 100
Elongation at break/%                        ≥ 100 200
Flexibility at low temperature  -15℃ No cracks —20℃ No cracks
Note:Unexposed use can not be considered artificial climate accelerated aging。

★Construction Technology
1、Process
Grassroots cleanup - formulated polyurethane primer - Polyurethane primer brushing - Added special parts of the process (additional layer) - Coil paste surface coating - Coil dry adhesive - the primary surface coating - dry glue - paving waterproofing membrane - exhaust, compaction, receiver processing - protective layer
2, the operation process points
(1) clean up the grass roots
(2) Construction of an additional layer
Yang angle, pipe root, fall-mouth and other parts need to be done additional layers may be self-adhesive sealing tape or polyurethane film.
(3) Brushing primary adhesive
Full bonding method of bonding method and article of roofing projects, should be separately Brushing primary adhesives and leveling layer membrane surface.
Full bonding method: leave 80mm lap joint, all the remaining parts of brushing, leveling layer over the surface coating.
Article bonding method: leveling the playing surface layer line, coating line by grassroots adhesive membrane surface by a corresponding position wire, coated with adhesive.
Empty shop law: from the inner periphery of the roof 800mm full coating of adhesive by grassroots full bonding treatment, the remaining portion not coated with an adhesive base layer.
(4) Paste the web
After the membrane surface and the base layer of adhesive leveling layer dry brushing, to paving membrane (membrane surface does not have to empty shop law adhesive can be directly paving). Press baseline, after spreading a sheet, immediately rolled over again with a clean brush transversely order to exclude the air.
(5) coil configuration according to the longitudinal direction, starting from the water downhill slope, parallel to the ridge of the lap joint along the flow direction should overlap; overlapping direction perpendicular to the prevailing wind direction should shun the ridge lap. Coil joint width: whole stick method: 80mm. Empty shop law, Article bonding method: 100mm.
Bonding methods: open the lap joint parts, roll joints with adhesive to stick open coil negative point to make is temporarily fixed in the open two roll surface uniform coating of adhesive to be substantially dry later, can be opened temporarily fixed point-bonded lap joint conduct of paste, and then with a hand roll transversely order rolling sticky solid.
(6) close the first coil end of the treatment:
Lapped seam edges and close the first end processing, application or one-component polyurethane caulk caulk CSM closed tight, and can be mixed with cement 20% of 107 plastic cement mortar presser sewing process.
(7) Construction of a protective layer
(A) is not accessible roof with a brush evenly brushing the surface of the membrane surface protective coatings.
(B) Master roof tile according to design requirements to do protection.
After construction according to GB50207-2012 "Roof Engineering Quality Acceptance" or GB50208-2011 "underground waterproof project quality inspection norms" for acceptance.

★Storage and transportation
During storage and transport of different types and specifications of products should be stacked separately and should not be mixed. Avoid the sun and rain, pay attention to ventilation. Storage temperature should not exceed 45 ℃, flat storage stack height does not exceed 5 layers, single stack stand up, NO contact with acids, alkalis, oils and organic solvents.
Prevent tipping or horizontal pressure, covered with tarpaulin when necessary during transport.
Under normal storage, transport conditions, storage period of one year from the date of production.
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