Polyethylene polypropylene polymer composite waterproof membrane

< --d ---Structural features of the product
--d ---dd !, Three-layer structure surface enhancement
--d ---dd !, Core layer--main waterproof layer Linear low-density polyethylene (D) with a higher branch ratio (more macromolecular side chains) is used, which has better extensibility, water impermeability, softness, puncture resistance, and low temperature resistance.
--d ---dd ! The polypropylene (polyester) non-woven fabric on the surface solves the problem of large linear expansion coefficient of polyethylene by compounding with the core layer. Increasing the surface roughness of the product improves the friction coefficient of the product and solves the bonding problem of the composite membrane to achieve cement bonding.
< --d ---Product Usage Features
--d ---dd ! Polymer waterproofing membrane belongs to the series of synthetic polymer waterproofing membranes. It has all the features of synthetic polymer membranes except In addition to its advantages, its most outstanding feature is that the network structure on its surface gives it its own unique performance - cement bonding.
--d ---dd ! Because the polymer composite membrane can be directly bonded with cement, it is not affected by the moisture content of the base layer during the construction process and can be constructed as long as there is no open water. This is something other waterproof membranes don’t have.
--d ---dd ! Due to the rough surface and large friction coefficient of the polymer composite membrane, it can be directly buried in sand with sufficient stability when used in water conservancy projects.
--d ---dd ! Since the polymer composite membrane can be directly bonded to the cement material during the solidification process, it can be directly designed into the structure of the cement material.
< --d ---Composite membrane bonding mechanism
--d ---dd ! When pasting the membrane, the adhesive penetrates into the grid-like structure on the surface of the polymer composite membrane. After the adhesive glue in the fiber layer is solidified, the fibers are covered to form a strong mechanical riveting force that firmly bonds the composite membrane and the base layer (structure) together.
--d ---dd ! The polymer composite membrane is bonded to the base layer using cement glue.
--d ---dd ! In order to improve the workability and water retention of cement glue and improve the impermeability of cement after solidification, special matching glue is required to be added to cement when making cement glue. Improving the water retention performance of cement prevents the moisture of cement glue from being quickly absorbed by the base layer during use, which facilitates construction operations and at the same time ensures the moisture required for cement solidification.
--d ---dd ! The special adhesive is specially developed by our company based on the characteristics of polymer composite waterproofing membrane. The cement glue made by mixing this product with cement has high bonding strength and is specially used in our company. Pasting of the company's polymer composite waterproofing membrane.
< --d ---Product technical indicators
--d ---dd !, Tensile strength: Apply tensile load to the sample along the longitudinal axis of the sample under the specified test conditions Maximum load at fracture failure. Expressed in Newtons per centimeter (/).
--d ---dd ! Elongation at break: when a tensile load is applied along the longitudinal axis of the specimen under the specified test conditions until the specimen breaks, the length of the specimen is the same as the length of the original specimen. ratio of lengths. %.
--d ---dd ! , Anti-permeability: The water-impermeable characteristics of the sample under the restricted dynamic water pressure under the specified time and pressure under the specified test conditions. . Watertight (.MPa min).
--d ---dd ! Low-temperature bending: Place the sample on a bending machine at a certain temperature and fold it in half without cracks.
--d ---dd ! Hot air aging: After the sample is exposed to hot air at a specified temperature for a certain period of time (°C), the changes in its physical, mechanical and other properties are measured. (Tensile strength: %, elongation: %).
--d ---dd !, Chemical resistance: in chemical media_ Polypropylene construction drawings