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Preparation method and application of novel weather-resistant composite waterproof material

A waterproof material and weather-resistant technology, which is applied in the field of preparation of new weather-resistant composite waterproof materials, can solve the problems of general effect, reduced mechanical properties and weather resistance of materials, and single effect of compounds, so as to improve mechanical properties, tensile strength and Effects of improved elongation at break, increased mechanical properties and weather resistance

Pending Publication Date: 2021-12-31
UNIV OF JINAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of other weather-resistant and waterproof patents directly add compounds such as anti-aging agents and antioxidants to prevent material aging. The incompatibility between the filler and the matrix, the pure physical mixing between the filler and the matrix, reduces the mechanical properties and weather resistance of the prepared material, and ultimately leads to a decrease in the service life of the waterproof material

Method used

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  • Preparation method and application of novel weather-resistant composite waterproof material
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  • Preparation method and application of novel weather-resistant composite waterproof material

Examples

Experimental program
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Effect test

example 1

[0037] A. Preparation of SBS-g-COOH.

[0038] Weigh 10g of SBS and 30g of solvent, add SBS to the solvent and mix and stir, add 0.075g of initiator after the SBS dissolves, then add 5g of graft compound through a constant pressure dropping funnel, and ice-bath for 10min. 2 Under protection, the flask was placed in a water bath at 60 °C for 12 h; after the reaction was completed, the flask was placed in an ice bath to terminate the reaction, and a transparent viscous SBS-g-COOH solution was obtained.

[0039] B. Preparation of SBS-g-COOH / nano rare earth compound.

[0040] Weigh 20g of SBS-g-COOH solution and 0.1g of nano-rare earth compound, add the nano-rare earth compound into the SBS-g-COOH solution, stir evenly, heat and react in a water bath at 70°C for 2 hours, and obtain SBS-g-COOH / nanometer rare earth compound after the reaction compound solution, the solution was poured into a petri dish, and dried in an oven at 50°C for 24 hours.

example 2

[0042] A. Preparation of SBS-g-COOH.

[0043] Weigh 10g of SBS and 30g of solvent, add SBS to the solvent and mix and stir, add 0.075g of initiator after the SBS dissolves, then add 5g of graft compound through a constant pressure dropping funnel, and ice-bath for 10min. 2 Under protection, the flask was placed in a water bath at 60 °C for 12 h; after the reaction was completed, the flask was placed in an ice bath to terminate the reaction, and a transparent viscous SBS-g-COOH solution was obtained.

[0044] B. Preparation of SBS-g-COOH / nano rare earth compound.

[0045]Weigh 20g of SBS-g-COOH solution and 0.2g of nano-rare earth compound, add the nano-rare earth compound into the SBS-g-COOH solution, stir evenly, heat and react in a water bath at 70°C for 2 hours, and obtain SBS-g-COOH / nanometer rare earth compound after the reaction compound solution, the solution was poured into a petri dish, and dried in an oven at 50°C for 24 hours.

example 3

[0047] A. Preparation of SBS-g-COOH.

[0048] Weigh 10g of SBS and 30g of solvent, add SBS to the solvent and mix and stir, add 0.15g of initiator after the SBS is dissolved, then add 5g of graft compound through a constant pressure dropping funnel, and ice-bath for 10min. 2 Under protection, the flask was placed in a water bath at 60 °C for 12 h; after the reaction was completed, the flask was placed in an ice bath to terminate the reaction, and a transparent viscous SBS-g-COOH solution was obtained.

[0049] B. Preparation of SBS-g-COOH / nano rare earth compound.

[0050] Weigh 20g of SBS-g-COOH solution and 0.3g of nano-rare earth compound, add the nano-rare earth compound into the SBS-g-COOH solution, stir evenly, heat the reaction in a water bath at 70°C for 2 hours, and obtain SBS-g-COOH / nanometer rare earth compound after the reaction compound solution, the solution was poured into a petri dish, and dried in an oven at 50°C for 24 hours.

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Abstract

The invention discloses a preparation method and application of a novel weather-resistant composite waterproof material taking SBS as a matrix. According to the preparation method, SBS-g-COOH with different grafting ratios is synthesized through thermally-induced thiol-ene click reaction, 0.5-2wt% of nano rare earth oxide is added, the nano rare earth oxide is coordinated with carboxyl of the SBS-g-COOH to form salt bonds, and the chemical interface combined nano rare earth oxide / SBS composite waterproof material is prepared. Compared with GB / T18242-2008, the maximum load of the composite waterproof material is improved by 200%, the tearing strength is improved by 300%, and after being subjected to artificial accelerated aging, the appearance and mechanical properties of the composite material are not changed compared with those of the un-aged. The nano rare earth oxide plays a role in absorbing and resisting ultraviolet rays in the composite material, so that the service life of the composite waterproof material is greatly prolonged.

Description

technical field [0001] The invention relates to a preparation method of a novel weather-resistant composite waterproof material. Background technique [0002] Waterproof membrane is mainly used for building walls and roofs, and is a flexible building material product that can resist external rainwater. It is the first barrier for waterproofing the entire project and plays a vital role in the entire project. Such materials need to have excellent water resistance and weather resistance to ensure the service life and reduce the cost of later use. [0003] At present, roof waterproofing mainly uses SBS as the base waterproof membrane. Since the SBS macromolecular chain has double bonds, the double bond is opened and the long chain structure is destroyed under ultraviolet radiation, which accelerates the aging deformation of the SBS waterproof membrane, making the waterproof membrane The material will appear fading, yellowing, powdering, cracking and other phenomena, and the ser...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08K3/014C08K5/00C08F297/04C08F8/00
CPCC08K3/014C08K5/005C08F8/00C08K2201/011C08L2201/08C08F297/04C08L53/025
Inventor 周春华梁跃刘晓强
Owner UNIV OF JINAN
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