How to distinguish the quality degree of SBS waterproofing membrane.

Method 1: Refer to the product packaging specifications or factory inspection report. For Type I rolls, the low-temperature flexibility is -20 °, while for Type II rolls, the low-temperature flexibility is 25 °.

Method 2: Send to the laboratory for low-temperature flexibility testing. If experienced SBS production technicians can preliminarily determine approximate performance through methods such as hand pulling and bending.

Method 3: If you don't want to send it to the laboratory, you can conduct experiments in the refrigerator as long as the low temperature of the refrigerator meets the requirements.

The negative degree of waterproofing membrane refers to the "low-temperature flexibility" of the membrane, which refers to the bending performance of the membrane at a certain negative temperature state, that is, it can bend without cracking in a very cold environment of SBS waterproofing membrane. Generally speaking, the low-temperature performance of synthetic polymer membrane is relatively good, while the low-temperature performance of modified asphalt membrane is related to the modification process.

Have you heard of SBS rolls with temperatures of -5 ℃ and -10 ℃? In fact, this type of roll cannot be called SBS roll because the low-temperature flexibility of SBS waterproofing rolls should be at least -20 ℃, and other suitable indicators should also meet the standard requirements. Some people mislead that high temperatures are in the south and do not require -20 ℃. This is a misunderstanding because the low-temperature flexibility of the material is the basic characteristic element of the material, just like the low-temperature flexibility of EPDM rubber waterproofing rolls is -40 ℃. You cannot demand the production of -10 ℃ materials for PVC waterproofing rolls just because the local temperature is not so low.

Can SBS waterproofing membrane be used in high-temperature environments.

SBS modified asphalt waterproofing membrane has excellent high temperature resistance, and its elasticity is also very high. At the same time, this product has excellent fatigue resistance, and its elongation is also very reliable and has strong puncture resistance. Moreover, its strength is also very high. When used, this product is not easy to tear, and it is also suitable for use in cold environments. Therefore, its low temperature resistance is also very good, and it is not easy to crack when used in low temperature environments. TPO The waterproof roll material has a relatively long service life and is also very simple and convenient to use during construction. The main reason is that this product has no impact on the environment, so its pollution rate is relatively low.

The influence of environmental temperature on the performance of SBS waterproofing membrane.

1、 The impact on low temperature resistance performance.

A certain proportion of SBS thermoplastic elastomer rubber is added to it, and SBS is a block copolymer of butadiene and styrene. Butadiene is the soft segment elastic, styrene is the hard segment, and the soft segment acts as a continuous phase to make SBS in an elastic state, so that SBS can maintain good performance at lower temperatures. It still has its original flexibility at -75 ℃, and the waterproof polymer self-adhesive film waterproof roll function below -50 ℃. Therefore, the SBS modified asphalt waterproof roll produced has good low-temperature performance, especially suitable for cold areas and building waterproof projects where structures are prone to deformation.

2、 The impact on high temperature resistance performance.

SBS has good thermoplastic properties. Firstly, the hard segment styrene is distributed between butadiene as a dispersed phase to fix and reinforce, which has a good self-healing effect, resulting in high hardness of the material. Secondly, the two-phase separation and physical cross-linking network structure exhibited by SBS molecules make SBS lightweight and porous, possessing both the elastic properties of rubber and the thermoplastic properties of resin. Therefore, it has the characteristics of both rubber and resin. After heating this product to 90 ℃ for 2 hours, the surface of the liquid coil still does not bubble or flow, so SBS has good properties Modified asphalt waterproofing membrane is also suitable for building waterproofing projects in relatively hot areas, so its excellent high and low temperature resistance is particularly suitable for use in cold areas and can also be used in high temperature areas. The environmental temperature does not affect the material's high and low temperature resistance.

3、 The impact on tensile properties.

The material itself has excellent elasticity, high elongation, good ability to withstand cracks on the base surface, and a certain degree of self-healing ability to bridge cracks. Therefore, the tensile performance of SBS modified asphalt waterproofing membrane is a very important indicator for evaluating the performance of the membrane. The influence of environmental temperature on tensile performance will be verified through experiments.

Shandong Wanhe Waterproof Materials Co., Ltd. is a professional waterproof system supplier that integrates scientific research and development, production, sales, and construction services. It is a source manufacturer with quality assurance and price details. Please call 18263660598 for more information http://www.whfscl.com/ .