Plasticizer Composition for PVC Laminates With Low-Temperature Elongation
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Solution Overview
Problem
Resin molded products, particularly those used in automobile interiors, face challenges with low-temperature tensile elongation and heat shrinkage resistance, especially when combined with foamed polyurethane in laminates, leading to potential migration of plasticizers and heat shrinkage issues.
Innovation Solution
A compound represented by formula (1) is used in a resin composition, enhancing low-temperature tensile elongation and heat shrinkage resistance through specific structural components, including organic groups and bond types, which can be further improved with a polyester plasticizer and specific content ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional plasticizer is used in a vinyl chloride resin composition, then the resin molded product can be formed, but the low-temperature tensile elongation is insufficient
Solution Approach 1:
The patent changes the chemical structure parameters of the plasticizer by introducing a hydroxyl group and specific organic groups (Ax with 3-20 carbon atoms) into the molecular structure. This structural modification allows the plasticizer to maintain flexibility at low temperatures while resisting heat shrinkage, resolving the contradiction between low-temperature elongation and heat resistance
Solution Approach 2:
The invention creates a composite plasticizer system by combining a polyester component with a hydroxyl-containing compound having specific organic groups. This composite structure synergistically improves both low-temperature tensile elongation and heat shrinkage resistance, achieving properties that neither component alone could provide
2Adaptability or versatility
If the resin molded product is combined with foamed polyurethane to form a laminate, then the product functionality is enhanced, but plasticizer migration occurs causing heat shrinkage
Solution Approach 1:
The hydroxyl-containing plasticizer acts as an intermediary substance that forms strong interactions with both the vinyl chloride resin and the foamed polyurethane. This intermediary plasticizer prevents migration by creating a stable interface between the two materials, eliminating the harmful effect of plasticizer transfer while maintaining laminate functionality
Data Source
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AI summary
Provided is a compound that can be used in production of a resin composition that is capable of forming a resin molded product having excellent low-temperature tensile elongation and heat shrinkage resistance. The compounded is represented by formula (1), shown below (in formula (1), Ax represents an organic group having a carbon number of 3 to 20, Y1, Y2, Y3, and Y4 each independently represent a single bond, -C(=O)-, etc., R1 represents a hydrogen atom, a methyl group, etc., SP1, SP2, SP3, and SP4 each independently represent a specific organic group, a, b, c, and d each independently represent an integer of 1 to 30, Ra, Rb, Rc, and Rd each independently represent an optionally substituted chain aliphatic hydrocarbon group having a carbon number of 12 to 18, and x and y each independently represent 0 or 1).