1、Rational design of a room

Based on our investigations into thiol cross-linkers, we determined that an optimal combination comprising a rigid thiol cross-linker and flexible epoxy resin afforded both good adhesion and high hardness after photoanionic curing at room temperature.

2、Preparation of Epoxy Resins with Excellent

Here, we have synthesized a series of thiol-ended hyperbranched polymers (THBP-n) as curing agents to crosslink bisphenol-A epoxy resins by a thiol-epoxy click reaction.

3、POLYTHIOL™ QE

POLYTHIOL™ QE-340M is a thiol-terminated reactive polyether liquid polymer used as a liquid curing agent for epoxy resins with unique rapid-cure characteristics. QE-340M offers excellent properties in curing of epoxy resin in combination with amines or polyamines.

Accelerating the Curing of Hybrid Poly (Hydroxy Urethane)

In this work, PHU-thiol-epoxy hybrid adhesives are prepared and cured at room temperature using an epoxy resin with a combination of amino-terminated PHU and a thiol compound.

Effect of Synthetic Low

In present study, a novel thiol-functionalized polysilsesquioxane containing hydroxyl and methyl groups was synthesized to develop an epoxy hardener with low odor, low volatile organic compound (VOC) emission, and fast curing at low temperatures.

Latent curing of epoxy

The curing of epoxy resins by thiols proceeds through a click reaction which allows quantitative yield of the epoxy-thiol thermoset. Although the reaction can take place at elevated temperatures without requiring any catalyst, lower curing temperatures can be achieved by using base catalysts.

Thioester

This study proposes an effective solution to extend the use of thiol-type curing agents, overcoming their short shelf life and presenting a more industry-friendly method.

Epoxy curing｜Karenz

Thiols can be combined with other curing agents such as amines, acid anhydrides and phenols. It is suitable for low temperature epoxy resin curing systems in combination with base catalysts.

Hyperbranched Thiol

To address this, we designed and synthesized a series of thiol-terminated branched polyurethanes with varying molecular weights to act as curing agents for epoxy resins.

Characterization of sequential dual

In this work, we have studied the sequential character of dual-curing systems based on the combination of thiol-acrylate and thiol-epoxy formulations, using basic/nucleophilic tertiary amines as thermal catalysts.

In modern industry, epoxy resins are widely favored for their excellent mechanical properties, chemical stability, and superior adhesive capabilities. Thiol curing agents, as a critical component in the curing process of epoxy resins, significantly influence not only the final product performance but also the efficiency and cost of the application process. This article explores the interaction between thiol curing agents and epoxy resins, as well as how this combination affects the curing process, thereby having a profound impact on the applications of epoxy resins.

A thiol curing agent is a compound containing sulfur atoms that reacts with the epoxy groups in epoxy resins to form stable thioether bonds, achieving curing. This reaction typically requires a specific temperature to ensure smooth progress. the selection of the thiol curing agent and its application temperature are key factors in ensuring successful epoxy resin curing.

Thiol curing agents come in various types, including aliphatic thiols and aromatic thiols. Different types of thiols exhibit distinct chemical properties and reactivities, leading to varying characteristics when reacting with epoxy resins. For example, aliphatic thiols usually have higher reactivity and can react with epoxy resins at lower temperatures, while aromatic thiols may require higher temperatures for effective curing due to their lower reactivity.

In practical applications, selecting the appropriate thiol curing agent is crucial to ensuring the quality of epoxy resin curing. First, the type of epoxy resin and the intended use environment must be considered. Second, the concentration and dosage of the thiol curing agent must be optimized to ensure its full effectiveness during curing. Additionally, factors such as curing temperature and time must be carefully controlled to guarantee complete curing of the epoxy resin.

Beyond thiol curing agents, the formulation of epoxy resins—specifically the ratio of curing agent to resin—also plays a significant role in the curing process. This ratio directly impacts the mechanical, thermal, and chemical resistance properties of the cured material. An optimal formulation ensures the best performance of the epoxy resin after curing.

In epoxy resin formulations, the proportion of curing agent is typically higher because it promotes rapid cross-linking and network formation, accelerating curing and improving material strength. excessive curing agent may lead to increased brittleness and reduced toughness. Thus, the curing agent ratio must be balanced to achieve desired results without compromising performance.

Diluents for epoxy resins are another critical factor affecting the curing process. Diluents adjust the viscosity of the resin for easier application and improve post-curing material properties. Selecting the appropriate diluent is essential for ensuring curing quality.

When choosing diluents, factors such as the type of epoxy resin, application environment, and working conditions must be considered. Generally, fast-evaporating diluents suit quick-drying epoxy formulations, while slower-evaporating ones are更适合慢干型环氧树脂。此外，还需考虑稀释剂对材料性能的影响，以确保其满足工程需求。

在环氧树脂的固化过程中，环境因素对其性能的影响不容忽视。固化温度、湿度和氧气含量等因素都会对固化过程产生影响。在高温环境下，环氧树脂的固化速度会加快，但过高的温度可能会导致材料出现热应力和变形等问题。在低湿度环境下，环氧树脂的固化速度可能会减慢，同时水分的存在还可能导致材料出现裂纹等问题。此外，氧气含量对环氧树脂的固化过程也有一定影响，过多的氧气会抑制固化反应的进行。

为了确保环氧树脂的固化质量，需要在固化过程中采取相应的措施来控制环境因素。例如，可以通过调整固化温度、湿度和氧气含量等方式来优化固化条件。此外，还可以采用保护层等方法来防止外部环境对固化过程的影响。

在环氧树脂的应用中，除了固化过程的控制，还需要考虑材料的长期性能。环氧树脂作为一种高性能的材料，其在使用过程中可能会出现疲劳、蠕变、开裂等问题。这些问题的出现往往与材料的微观结构有关，因此需要通过改进生产工艺或选择特定类型的环氧树脂来避免这些问题的发生。

为了解决这些长期性能问题，可以采用一些特殊的处理技术，如表面处理、热处理等。这些处理技术可以提高材料的表面硬度、耐磨性和抗腐蚀性等性能，从而延长材料的使用寿命。此外，还可以通过添加一些功能性填料或添加剂来改善材料的长期性能。

综上所述，硫醇固化剂与环氧树脂之间的相互作用及其对固化过程的影响是环氧树脂应用研究中的一个关键领域。通过对硫醇固化剂的选择、配比、稀释剂的选用以及固化条件的控制等方面的深入研究，可以有效地提高环氧树脂的性能，满足各种工程需求。同时，也需要关注环氧树脂的长期性能问题，通过改进生产工艺和使用特殊处理技术来提升材料的使用寿命和可靠性。