1、Rapid uptake of gold ions by sulfonated humic acid modified phenolic
Here, we report two humic acid modified phenolic resin (SHAR and NSHAR) using sulfuric acid and sodium sulfite as sulfonating agents respectively, which were prepared by a simple two-step method using water as solvent.
2、Characterization and properties of phenolic resin doped modified lignin
Due to its low reactivity, alkaline lignin is usually discharged as production waste, unaware that lignin macromolecules can be modified.
3、磺化酚醛树脂_百度百科
磺化酚醛树脂（sulfonated phenolic resin SMP），又称磺甲基酚醛树脂，是一种阳离子交换树脂，分子式C7H8O2，CAS号70892-67-0，执行标准SY/T 5094-2017。
4、Rapid uptake of gold ions by sulfonated humic acid modified
Here, we report two humic acid modified phenolic resin (SHAR and NSHAR) using sulfuric acid and sodium sulfite as sulfonating agents respectively, which were prepared by a simple two-step method using water as solvent.
5、Sulfonated Phenol–Formaldehyde Resins for Highly Efficient, Selective
Herein, three novel sulfonated phenol–formaldehyde (SPF) resins with almost non-porosity were prepared through a facile polymerization of various phenol sulfonates with formaldehyde and applied to the adsorption of NH 3.
Sulfonated Phenolic Resin
Sulfonated phenolic resin-modified starch offers exceptional physical, chemical, and biological properties, positioning it for extensive use in papermaking, textiles, packaging, and other fields. challenges such as high production costs and complex manufacturing processes remain.
Development and Evaluation of a Novel Sulfonated Phenol–Formaldehyde
The reaction mechanism of sulfonated phenolic resin was analyzed by comparing the changes in the viscosity of the sulfonated phenolic resin and phenolic resin. The molecular structure of SPF resin was characterized using FTIR and HPLC–MS/MS.
Foamless modified sulfonated phenolic resin for drilling fluid and
A technology of sulfonated phenolic resin and drilling fluid, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of reduced use efficiency and poor inhibition, and achieve convenient use, cost saving, and dissolution and dispersion speed fast effect
磺化木质素磺甲基酚醛树脂共聚物_化工百科
磺化木质素磺甲基酚醛树脂共聚物（Sulfonated lignin formaldehyde resin copolymer）是一种树脂材料，具有如下性质： 磺化：磺化指的是将木质素和甲醛树脂共聚物经过磺酸处理，使其表面具有磺酸基团。 这样的处理提高了树脂共聚物的水溶性和电导性能。
Catalytic dehydration of sorbitol to isosorbide over sulfonated
Modified and sulfonated phenolic resins were used as catalysts for the dehydration of sorbitol to isosorbide, and the effects of surface hydrophobicity, acid type and acid amount on sorbitol conversion and isosorbide yield were investigated systematically.
In the chemical industry, phenolic resin is a critical thermosetting polymer widely used in adhesives, coatings, insulating materials, and composites. traditional pure phenolic resins suffer from poor heat resistance, insufficient mechanical strength, and weak chemical resistance, which limit their applications in broader fields. Consequently, developing modified sulfonated phenolic resins has become a prominent research focus.
Sulfonation as a Modification Method Sulfonation is a common modification technique that introduces sulfonate groups to enhance the polarity and hydrophilicity of phenolic resins, thereby improving their adhesion to various substrates and durability. The sulfonation process typically involves mixing phenolic resin with sulfur-containing compounds (e.g., sulfuric acid, sodium sulfite) under high-temperature conditions. The sulfonated resin exhibits superior bonding strength, aging resistance, and corrosion tolerance.
Application Prospects of Sulfonated Phenolic Resins Due to their excellent comprehensive properties, sulfonated phenolic resins are extensively employed in industrial sectors. For instance, in electronic packaging materials, they provide exceptional electrical insulation, mechanical strength, and thermal stability. In automotive manufacturing, they serve as high-performance adhesives for bonding metals, plastics, and rubber in critical components such as engine parts, vehicle frames, and transmission systems.
Additionally, sulfonated phenolic resins are used in specialty coatings that maintain strong adhesion and weather resistance under extreme conditions, making them suitable for aerospace, marine engineering, and offshore applications. These resins also play a role in producing advanced composites by combining with other resins or fibers to create structurally complex and performance-optimized products.
Preparation Process of Sulfonated Phenolic Resins The synthesis of sulfonated phenolic resins involves several steps:
- Raw Material Selection: Choose appropriate phenolic resin precursors, such as resorcinol-formaldehyde resin.
- Sulfonation Reaction: Mix the resin with sulfur-containing compounds at a specific ratio and heat at high temperatures.
- Post-Treatment: Process the sulfonated resin through washing, drying, and pulverization.
- Property Adjustment: Modify the resin’s characteristics (e.g., adding plasticizers, curing agents) to meet application-specific requirements.
Temperature and reaction time control are critical during sulfonation. Excessive temperatures cause resin degradation, while insufficient reaction time leads to incomplete sulfonation. Additionally, the reaction must occur in an anhydrous environment, as moisture interferes with sulfonation and degrades product quality.
Challenges of Sulfonated Phenolic Resins Despite their advantages, sulfonated phenolic resins face challenges. For example, byproducts like sulfates may form during sulfonation, posing environmental and health risks. High production costs also restrict their widespread use.
To address these issues, researchers are exploring more eco-friendly and cost-effective sulfonation methods. Structural optimization and functional modifications of the resin aim to further improve its performance and expand its applications.
As a high-performance thermosetting polymer, modified sulfonated phenolic resin plays a vital role in modern industries. Sulfonation enhances heat resistance, mechanical strength, and corrosion resistance while broadening its utility. With ongoing technological advancements and evolving market demands, sulfonated phenolic resins will continue to innovate and drive progress across diverse sectors.
