Unsaturated Polyester Adhesive Shrinkage and Permeability
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Solution Overview
Problem
Marble glue used for filling gaps between stones has poor air drying properties, viscosity after curing, color difference with polished stone, poor shrinkage resistance leading to concave or separation issues, and low permeability resulting in incomplete filling or holes.
Innovation Solution
An adhesive comprising unsaturated polyester resin, hydrogenated castor oil, nano powder, filler, and anti-shrinking agent, with specific weight ratios and dispersion methods, to achieve good permeability, air-drying quality, shrinkage resistance, and transparency, enhancing bonding strength and aesthetic appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional marble glue is used for filling gaps between stones, then bonding strength is achieved, but air drying property deteriorates and viscosity occurs after curing
Solution Approach 1:
The patent modifies the chemical composition parameters of the adhesive by incorporating specific ratios of unsaturated polyester resin (100 parts), hydrogenated castor oil (0-5 parts), nano powder (1-20 parts), filler (0-100 parts), and anti-shrinking agent (1-15 parts). This parameter optimization enables the adhesive to maintain bonding strength while achieving non-sticky curing and good air drying properties
Solution Approach 2:
The patent creates a composite adhesive system combining multiple materials: unsaturated polyester resin as base, hydrogenated castor oil for air drying enhancement, nano powder for permeability, filler for structural properties, and anti-shrinking agent for volume stability. This composite approach resolves the contradiction between bonding strength and air drying performance
2Strength
If traditional marble glue is used for filling gaps, then bonding is achieved, but color difference occurs between polished glue and stone
Solution Approach 1:
The patent optimizes the brightness parameter by controlling the composition of filler materials and their particle size distribution. The specific formulation with 0-100 parts filler and 1-20 parts nano powder creates an adhesive that, when polished, achieves brightness matching the stone surface, eliminating color differences while maintaining bonding strength
3Strength
If traditional marble glue is used for filling gaps, then bonding is achieved, but shrinkage occurs causing concave or separation from stone
Solution Approach 1:
The patent applies preliminary anti-action by incorporating anti-shrinking agents (1-15 parts) that counteract the natural shrinkage tendency of the adhesive during curing. These agents pre-compensate for volume reduction, preventing concave formation and separation from stone surfaces while preserving bonding strength
Solution Approach 2:
The patent modifies the compositional parameters by adding specific amounts of anti-shrinking agents and adjusting the filler content (0-100 parts) to control the adhesive's shrinkage behavior. This parameter optimization maintains bonding strength while achieving dimensional stability
4Strength
If traditional marble glue is used for filling gaps, then bonding is achieved, but permeability is poor resulting in incomplete filling or holes
Solution Approach 1:
The patent optimizes permeability by adjusting the particle size distribution and content of filler materials (0-100 parts) and nano powder (1-20 parts). This parameter modification enables the adhesive to penetrate deep into stone gaps and cracks while maintaining bonding strength and achieving complete filling without holes
Solution Approach 2:
The patent incorporates nano-sized particles (1-20 parts) that operate at a different dimensional scale compared to conventional fillers. These nano particles can penetrate into micro-cracks and pores that larger particles cannot reach, enhancing permeability and complete filling capability while preserving bonding strength
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 adhesive exhibits improved permeability, air-drying quality, shrinkage resistance, and transparency, ensuring a smooth, strong bond without stickiness or concave formation, with enhanced bonding strength and aesthetic appeal, addressing the limitations of traditional marble glue.
Implementation Method 1
an unsaturated polyester resin suitable for air-drying
Implementation Method 2
hydrogenated castor oil
Implementation Method 3
between 1 and 20 weight parts of nano powder
Implementation Method 4
between 1 and 15 weight parts of an anti-shrinking agent
Data Source
AI summary
An adhesive, including: at least 100 weight parts of an unsaturated polyester resin suitable for air-drying, between 0 and 5 weight parts of hydrogenated castor oil, between 1 and 20 weight parts of nano powder, between 0 and 100 weight parts of a filler, and between 1 and 15 weight parts of an anti-shrinking agent.