Industry Insights & Tutorials - Yunzhu New Materials

Evolution of Formwork Release Agent Processes and Market Competitiveness

Before steel bars and concrete constructed the framework of modern China, there was a critical yet often overlooked step in the concrete construction process: demolding. The practice began with basic, experience-driven methods, such as applying a layer of waste engine oil or simple soap solution. Today, the technology has undergone a significant transformation. The shift to water-based series has become mainstream. The application of bio-based raw materials, biodegradable surfactants, and nano-modification technologies is driving the next level of upgrade in China's release agent manufacturing. This push has led to the widespread adoption of green, eco-friendly, and high-performance concrete release agents in China, enabling domestic enterprises to establish strong competitiveness against established global brands.

How Release Agents Affect Carbon Fiber Performance and Appearance

Introduction: Carbon fiber reinforced polymer (CFRP) is often regarded as the crown jewel of modern manufacturing. From F1 race cars that chase ultimate speed, to massive wind turbine blades that deliver clean energy, and even to the golf clubs and bicycle frames we use in everyday life, CFRP—with its exceptional specific strength and lightweight characteristics—is driving a true materials revolution. However, the process of manufacturing these high-performance components is far from simple. CFRP parts are typically made using thermoset resins (mainly epoxy or vinyl ester resins) as the matrix, which are cured under high temperature and high pressure inside the mold. If demolding is not smooth, it can lead to part damage, mold scratching, and in more severe cases, forced demolding will introduce defects on the surface of the carbon fiber part. These defects not only affect the appearance, but also interfere with secondary processes (such as painting, bonding, or clear coating) and can ultimately compromise the mechanical performance of the finished component.

PU Release Agent Guide: How to Prevent Sticking, Cracks, and Surface Defects in Shoe Sole Molding

Why PU Shoe Sole Molding Often Fails at Demolding Polyurethane (PU) shoe soles are widely used in the global footwear industry for their flexibility, durability, and comfort. However, many manufacturers face recurring production problems—especially during the demolding process. Issues such as sticking, cracks, surface whitening, and bubbles can significantly reduce product quality and increase scrap rates. In most cases, these defects are not caused by the mold or the PU formulation itself, but by incorrect release agent selection or improper application. This guide explains the most common demolding problems in PU shoe sole molding and provides practical advice on how to choose and apply the right PU release agent for stable, defect-free production.

How to Choose the Right Release Agent for Different Mold Temperatures

This article explains how mold temperature directly influences the performance and selection of industrial release agents across various molding processes. It highlights the importance of matching thermal stability, wetting behavior, and environmental requirements to specific temperature ranges—from low-temperature applications like polyurethane and concrete to high-temperature processes such as rubber vulcanization, thermosetting composites, and metal die casting. The article compares water-based, silicone, solvent-based, semi-permanent, and high-temperature specialty formulations, outlining their suitable operating temperatures and performance characteristics. It also covers solutions for common temperature-related issues such as sticking, fouling, moisture defects, and thermal degradation. Yunzhu New Materials provides a full portfolio of release agents engineered for different mold temperatures, helping global manufacturers achieve stable demolding, improved efficiency, and environmentally compliant production.

Key Points – SOP for Water-Based Concrete Release Agents

With years of experience in developing and applying concrete release agents, our company has created a standardized SOP for using water-based concrete release agents. This guide helps ensure high-quality concrete surface finishes and extends mold life.

Release Agent Film-Forming Materials and Functional Introduction

Release agents are essential processing aids in modern molding, forming an efficient and stable barrier interface between the mold surface and the molding material (e.g., polyurethane, rubber or composites). Their performance directly determines product surface quality, production efficiency, and compatibility with downstream processing.

Surface Air Bubbles in Precast Concrete: Causes and Solutions

A deep analysis of the mechanisms behind air bubble formation in precast concrete elements, with multiple strategies to prevent bubble occurrence. The focus is on the fact that selecting the right concrete release agent can effectively prevent air bubbles in concrete.

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