Bio-Based Waterproof Membrane With PEF Base for Stronger Adhesion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current waterproof materials made from biomass modified asphalt and biomass polyester bases do not match the performance of traditional waterproof materials, with issues such as insufficient adhesive strength and performance lagging behind petroleum-based counterparts.
Innovation Solution
A waterproof membrane is developed using biomass modified asphalt, heavy calcium filler, and a bio-based polyethylene furanoate (PEF) base, with a preparation process involving heating, saturation, scraping, and application of a silicon oil-coated polyethylene isolation layer, and optimized by adding high-temperature tackifier to enhance bonding and elasticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If biomass modified asphalt and biomass polyester base are combined for waterproof membrane, then environmental sustainability is improved, but adhesive strength and performance are insufficient compared to petroleum-based materials
Solution Approach 1:
The patent introduces a coupling agent as an intermediary substance between the biomass modified asphalt and the biomass polyester base. The coupling agent contains both hydrophilic groups that bond with the polyester base and hydrophobic groups that blend with the asphalt, creating effective interfacial adhesion. This mediator resolves the incompatibility between the two biomass components while maintaining environmental sustainability.
Solution Approach 2:
The patent creates a composite material system by combining biomass modified asphalt, biomass polyester base, and coupling agent in specific proportions. This composite structure leverages the strengths of each component: the polyester base provides structural integrity, the asphalt provides waterproofing and flexibility, and the coupling agent ensures strong bonding between them, achieving performance comparable to petroleum-based materials.
2Duration of action of stationary object
If biomass modified asphalt is used to improve elasticity and aging resistance, then durability is improved, but adhesive strength remains insufficient for bonding with biomass polyester bases
Solution Approach 1:
The coupling agent serves as a bridge between the asphalt and polyester base, with its dual-nature structure (hydrophilic and hydrophobic groups) enabling it to bond with both materials. This intermediary resolves the adhesive strength deficiency while preserving the durability benefits of biomass modified asphalt.
Solution Approach 2:
The patent modifies the chemical parameters of the asphalt-polyester interface by introducing the coupling agent, which changes the surface energy and chemical reactivity at the interface. This parameter change enables strong adhesion between the two materials while maintaining the bulk properties of the asphalt for durability.
3Strength
If traditional petroleum-based polyester base is used, then strength and stability are achieved, but production cost and environmental impact are high
Solution Approach 1:
The patent replaces expensive petroleum-based polyester with biomass-based polyester that can be derived from renewable resources. While biomass polyester may have slightly different properties, the coupling agent compensates for performance gaps, achieving comparable strength at lower environmental cost and potentially lower production cost.
Solution Approach 2:
The patent changes the chemical composition parameters of the polyester base from petroleum-derived to biomass-derived materials. This parameter change reduces environmental impact and production cost while the coupling agent ensures that mechanical strength requirements are still met.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The membrane achieves excellent waterproofing performance, environmental sustainability, and economic efficiency by utilizing renewable biomass resources, improving bonding strength, elasticity, and durability while reducing environmental pollution and production costs.
Implementation Method 1
heating the modified biomass asphalt
Implementation Method 2
immersing the bio-based PEF base into the modified biomass asphalt tank for saturation
Implementation Method 3
conducting a cooling treatment
Data Source
AI summary
A waterproof membrane based on biomass modified asphalt and a biomass polyester base is provided. A method for preparing the waterproof membrane using the prepared raw materials includes following steps: a, heating the modified biomass asphalt, adding the heavy calcium filler into the modified biomass asphalt, and stirring uniformly to obtain a composition, then pumping the composition into a modified biomass asphalt tank; b, immersing the bio-based polyethylene furanoate (PEF) base into the modified biomass asphalt tank for saturation; c, scraping off excess asphalt from the bio-based PEF base saturated with the modified biomass asphalt; d, after removing the excess modified biomass asphalt from the surface of the bio-based PEF base, cooling treatment is conducted; and e, after cooling, applying a silicon oil-coated polyethylene (PE) isolation layer on a surface to obtain a finished waterproof membrane.