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  • Product name: MPU White Polyurethane Waterproof Membrane

  · General Description ·  

With unbeatable advantages over other liquid-applied membranes in ease of use and physical properties after curing, MPU series is extremely durable, and cost-effective, liquid waterproofing system that is free from any type of tar, hazardous or harmful ingredients, therefore of which the tensile strength and adhesive strength to wet substrate have been greatly boosted.

 

  

For non-exposed environment

 

    

  · Available Specification  ·  

Polyurethane Waterproofing Coatings
(Below-mentioned data is our standard offer, other required value will be available as per your need)
  Two-component
(contain solvent)

Single-component

Solvent based (SPU-95) solvent-free(MPU)
Color

Milky White

Milky White

Milky White

Solid content

Above 94%

Above 95%

99%

Recommended application rate

Thickness: 1.5-2.0mm

Rate: 2.0-3.0kg/m2

Thickness: 1.2-1.5mm

Rate: 1.6-2.1kg/m2

Thickness: 1.2-1.5mm

Rate: 1.5-2.0kg/m2

Fully curing time

≤24

≤24

≤24

Elongation at break

≥450%

≥450%-550%

≥450%-550%

Tensile strength

≥1.90 Mpa

≥1.90-2.45 Mpa

≥1.90-2.45 Mpa

Substrate condition

Fully dry, smooth and clean, no dust and standing water

Dry and clean, better performance in bonding with moistened substrate than other types of polyurethane coatings
(no standing water)
  

  ·  Characteristics ·  

●Environment friendly
No tar or hazardous additive, ensure to be safe and healthy, cured to form high performance rubberized film, Solvent-free one can be applied into drinking water tank
●Cost saving
Higher solid content enable reducing liquid consumption for each square feet
●Superior quality
Outstanding physical properties exceed over international standard, especially the adhesive strength is superb
●Stable performance
Due to simple chemical composition, skillful proportioning and precise production ensure MPU liquid to showcase excellent performance in weathering resistance, corrosion resistance and waterproofing
●No primer is required
Brush the liquid onto clean substrate, no primer is required, thus the safety and environment protection are dramatically enhanced
●Ease of use
No deposit, contraction or evaporation occurs; the cured membrane is tight, seamless and strong;Vertical application undergoes little liquid flow, more convenient application and better cured membrane against traditional ones

 

 

 

  · Application range ·  

●Waterproofing to building’s roofs, exterior walls, basements, balconies, kitchen and washrooms
●Waterproofing to special constructions such as granary, civil defense projects and bridges
●Non-exposed color steel roof retrofit
Single-component Polyurethane liquid-applied membrane:
Application Procedure:
●Substrate preparation:
The substrate must be clean, smooth, free from floating dust and pond/standing water
●Coating mixing:mix the liquid evenly using mechanical blender
●Brush the liquid onto substrate using rubberized scrapers; ensure the cured membranes to be equal in thickness.
Generally, two or three coats are required; each coat thickness shall be less than 0.7mm. After the first coat become dry, then the second one can proceed, the previous and next coats must be perpendicular until total thickness reaches required one
●When vertical application is executed, spray some fine sand onto the surface of last coat (within 12hours before curing) to keep the reliable adhesion between waterproofing membrane and subsequent plastering layer
Tools cleanup
When the tools are not available temporarily, can be immersed into the MPU liquid and sealed tightly; When all work is finished , perform cleaning after being immersed in alkaline water for some time,

Two-component polyurethane waterproofing coating:

Application guidance

1.Substrate preparation:

1.1 Outer or inner corners have been made to be circular arc before waterproofing work
1.2.Substrates must be smooth, strong, clean and free from oil stain.
Substrates surface must be dry enough (water absorption less than 9%)

2.Application procedure:

Clean substrate—→Prepare coating —→Treat and reinforce corner details —→Brush coating in large area —→Termination treatment

3. Detailed steps:
3.1.Substrate treatment:Remove sharp protrusions, clear away dusts and mud with tools. Any oil stain or rust of pipes, rainwater outlets and inner/outer corners must be eliminated
3.2.Prepare coating :Mix component A and B together at rate of 1:2 by weight
3.3 Corner details treatment or reinforcement:Upon the waterproofing requirements, all corner details such as inner/outer corner, construction joint, root of pipes and?? outlets shall be reinforced. Crosswise brush of the coating in large area for two times, after the first layer become dry (not sticky to hand), then the second layer can be done after the first layer become dry
3.4 Brush coating in large area

  · Transportation & storage ·  
● Free from sunshine and rain, keep ventilated
● Storage temperature shall be below 40℃, and stacked in cool and dry indoor area
● Piled upside down, to avoid sunshine or moisture
● The storage period last for 6 months under normal transportation and storage conditions.

  · Warranty ·  

CANLON warrants its Membranes to be free of defects in materials, but makes no warranty as to appearance or color. Since methods of application and on-site conditions are beyond our control and can affect performance, CANLON makes no other warranty, expressed or implied, including warranties of MERCHANTABILITY and FITNESS FOR A PARTICULAR PURPOSE, with respect to CANLON Membranes. CANLON’s sole obligation shall be, at its option, to replace or refund the purchase of the quantity of the CANLON Membrane proved to be defective and CANLON shall not be liable for any consequential or incidental loss or damage.

执行标准GB/T 19250-2013

序号

项目

技术指标

1

固体含量/%     ≥

单组份

85.0

多组分

92.0

2

表干时间/h        ≤

12

3

实干时间/h        ≤

24

4

流平性a          

20min时,无明显齿痕

5

拉伸强度/MPa       ≥

2.00

6.00

12.00

6

断裂伸长率/%       ≥

500

450

250

7

撕裂强度/(N/mm)     ≥

15

30

40

8

低温弯折性

-35℃,无裂纹

9

不透水性

0.3Mpa,120min,不透水

10

加热伸缩率/%

-4.0~+1.0

11

粘结强度/Mpa       ≥

1.0

12

吸水率/%           ≤

5.0

13

定伸时老化

加热老化

无裂纹及变形

14

热处理

(80℃,168h)

拉伸强度保持率/%       

80~150

断裂伸长率/%       ≥

450

400

200

低温弯折性

-30℃,无裂纹

15

碱处理

[0.1%NaOH+饱和Ca(OH)2溶液,168h]

拉伸强度保持率/%       

80~150

断裂伸长率/%       ≥

450

400

200

低温弯折性

-30℃,无裂纹

16

酸处理

(2%H2SO4溶液,168h)

拉伸强度保持率/%       

80~150

断裂伸长率/%       ≥

450

400

200

低温弯折性

-30℃,无裂纹

该项性能不适用于单组分和喷涂施工的产品。流平性时间也可根据工程要求和施工环境由供需双方商定并在订货合同与产品包装上明示。

b仅外露产品要求测定

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