High-strength and deformation-resistant TPO waterproof coiled material and preparation method thereof

Abstract

The invention discloses a high-strength and deformation-resistant TPO waterproof roll. The waterproof roll structurally comprises a reinforcing layer, an upper TPO material layer, a fabric inner reinforcing layer and a lower TPO material layer from top to bottom. The invention further discloses a preparation method of the high-strength and deformation-resistant TPO waterproof coiled material. The preparation method comprises the steps of preparing the modified ethylene-1-hexene copolymer, preparing the reinforcing layer, preparing the TPO material layer and preparing the waterproof coiled material. The prepared waterproof coiled material is good in tensile property, the maximum tensile force is 953-960 N / cm, and the elongation at the maximum tensile force is 56-57%; the thermal treatment dimensional change rate of the waterproof coiled material prepared by the invention is 0.07-0.09%.

Description

technical field [0001] The invention relates to a high-strength, deformation-resistant TPO waterproof coiled material and a preparation method thereof, belonging to the field of waterproof coiled materials. Background technique [0002] TPO waterproof membrane, that is, thermoplastic polyolefin waterproof membrane, is based on thermoplastic polyolefin (TPO) synthetic resin that combines ethylene-propylene rubber and polypropylene with advanced polymerization technology, and adds antioxidants and anti-aging agents. , a new type of waterproof membrane made of softener, polyester fiber mesh cloth can be used as an internal reinforcement material to make a reinforced waterproof membrane, which belongs to the waterproof product of synthetic polymer waterproof membrane. [0003] In practical applications, this product has comprehensive characteristics such as anti-aging, high tensile strength, large elongation, wet roof construction, no protective layer for exposure, convenient co...

AI Technical Summary

Problems solved by technology

[0004] CN108790350A discloses a modified TPO waterproof membrane and its preparation method, which improves the tear resistance and tensile resistance of the waterproof membrane, but its stress relaxation rate is relatively large, that is, under a certain constant temperature and pressure conditions , the stress decreases with the increase of time, which is reflected in the specific use environment, that is, after the construction of the waterproof membrane, it is affected by the pressure and temperature in the environment, which will cause its stress to decrease for a long time, resulting in damage to its performance and lower waterproof performance.

[0005] CN110130506A discloses a coiled material waterproof layer made by on-site construction, which is a waterproof coiled material of asphalt and SBS composite waterproof layer, which reduces the stress relaxation rate of the waterproof coiled material. The optimal solution is only reduced to about 9%, which still cannot Solve the stress relaxation phenomenon after long-term use

[0006] To sum up, the stress relaxation rate of the existing TPO waterproof membrane is relatively large, and the stress drops greatly after long-term use, which affects the performance and waterproof effect.