Characteristics of polymer self-adhesive waterproofing membrane.

Today, we will introduce the characteristics of polymer self-adhesive waterproofing membranes.

The tensile strength of polymer self-adhesive waterproofing membrane is very high, usually around three megapascals, and the high tensile strength can reach about ten megapascals, which can fully meet the needs of the membrane in construction and transportation applications. The elongation at break is generally above 200%, and can reach up to 500%, fully adapting to the needs of structural stretching or deformation.

The tear resistance strength of polymer self-adhesive waterproofing membrane is generally above 20 kilonewtons per meter. SBS waterproofing membrane has excellent crack resistance.

The heat resistance is very good, and it will not easily produce bubbles even at 100 degrees Celsius. It also has flexibility at low temperatures, even at minus 20 degrees Celsius, and can be used in cold areas at minus 45 degrees Celsius. It can also have good corrosion resistance, acid and alkali salt resistance, etc. These are the characteristics of polymer self-adhesive waterproofing membranes.

Waterproofing is commonly used on roofs, underground buildings, the underground parts of buildings, and indoor and water storage structures that require waterproofing. Depending on the measures and methods taken, self-adhesive waterproofing membranes are divided into two categories: material waterproofing and structural waterproofing. As a manufacturer of waterproofing membranes, I will take you to understand the necessity of self-adhesive membranes.

Material waterproofing relies on building materials to block the passage of water, in order to achieve the purpose of waterproofing or increase the ability to resist leakage, such as membrane waterproofing, coating waterproofing, rigid waterproofing of concrete and cement mortar, and waterproofing of clay and lime soil. Structural waterproofing adopts appropriate structural forms to block the passage of water, in order to achieve the purpose of waterproofing, such as water stop strips and cavity structures.

The main application areas include roofs, underground, exterior walls, and interior of buildings, municipal engineering such as urban road waterproofing membranes, bridges, and underground spaces, transportation engineering such as bridges, tunnels, and underground railways of highways and high-speed railways, water conservancy projects such as diversion canals, reservoirs, dam bodies, water conservancy power plants, and water treatment, etc. With the progress of society and the development of building technology, the application of building waterproofing materials will continue to extend to more fields.

Waterproof materials are divided into rigid and flexible according to their characteristics. Rigid waterproof materials generally refer to cement mortar, which has high compressive and anti-seepage abilities after forming water release, but does not have extensibility. Its ability to resist structural tensile changes is also not high. If earthquakes or crustal movements cause the high molecular self-adhesive membrane waterproof roll wall to break or crack, it may lose its waterproof function. Flexible materials have good elastic-plastic and extensibility, and can adapt to partial deformation of the structure.

The roll material made from raw paper as the base material, impregnated with low softening point asphalt, and then coated with high softening point asphalt on both sides of the oil paper, with a surface spread of isolation agent, although it can play a certain waterproof role, it has disadvantages such as low strength, poor durability, and insufficient ductility. The main reason is that the quality of the raw paper used to make the roll material is poor. In China, raw paper is made of organic fibers such as straw pulp or reed pulp, and waste wool from rags. The straw pulp content accounts for more than 60%, which increases the compactness of the raw paper. The liquid roll material has insufficient looseness, high water absorption rate, low oil absorption rate, and asphalt is difficult to penetrate. After being made into the roll material, it is easy to expand and rot when it encounters water. Due to the long-term immersion of underground engineering waterproof layers in groundwater, the waterproof layer is prone to decay. Paper tire rolls have low strength and poor toughness. When there is slight settlement and structural deformation, temperature difference deformation, and shrinkage deformation in underground engineering, Paper tire waterproofing membranes will be torn and leak water, and cannot be replaced, so paper tire waterproofing membranes are not allowed to be used for underground engineering waterproofing layers.

The waterproof layer of underground engineering can only use polymer rolls, but can also use polyester felt, glass cloth modified asphalt waterproof rolls, and recycled rubber powder tire free waterproof rolls.

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/ .