1、Fabrication of epoxy modified polysiloxane with enhanced mechanical

Polysiloxane with aminopropyl-terminated pendant groups were synthesized. The synthesized polysiloxane copolymers shows higher reactivity. The mechanical properties and adhesion strength of the modified resins were improved greatly. The modified coatings exhibited excellent antifouling performance.

2、Epoxy resin

Under the conditions of 20 wt% epoxy resin content, a vinyl-to-active hydrogen ratio of 1:2, and hydrosilylation reaction parameters of 85 °C for 4 h, the microspheres exhibited superior hydrophobicity and surface morphology, achieving a water contact angle of 154.2°.

3、Journal of Applied Polymer Science

In this paper, the copolymerization extent of epoxy resin with polysiloxanes was enhanced through solution polymerization by refining the synthesis process. The investigation explored the impact of polymerization process parameters on the reaction extent, phase structure, and mechanical properties.

Properties of Modified Polysiloxane Resins

This study prepares glass-fiber-reinforced composites with elevated mechanical properties after heat through utilizing two variants of epoxy resins modified with polysiloxane, phenolic resin, kaolin, and graphite.

Epoxy resins containing sulfhydryl hyperbranched polysiloxane with

In this paper, the modifier sulfhydryl hyperbranched polysiloxane (HSiSH) was fabricated by the “one-pot” method. And investigated the effect of HSiSH on the curing temperature, mechanical and thermal properties of epoxy resin.

Study on epoxy resin modified by hyperbranched polysiloxane containing

A novel phosphorous/silicon hybrid containing active amino was synthesized by bisphenol F epoxy resin modified by 0- (2,5-Dihydroxyphenyl)−10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide (ODOPB) and hyperbranched polysiloxane (APTMS-HPSi).

Phenyl Propyl Polysiloxane

In this paper, the copolymerization extent of epoxy resin with polysiloxanes was enhanced through solution polymerization by refining the synthesis process. The investigation explored the impact of polymerization process parameters on the reaction extent, phase structure, and mechanical properties.

Preparation and Properties of 3D Printing Light

Using a photocured SLA-3D printer manufactured by Hong Kong Peopoly Moai, the hyperbranched polysiloxane modified epoxy resin material prepared in this paper was printed and molded.

Preparation and Properties of 3D Printing Light

Using a photocured SLA-3D printer manufactured by Hong Kong Peopoly Moai, the hyperbranched polysiloxane modified epoxy resin material prepared in this paper was printed and molded.

Synthesis and application of cyclotetrasiloxane modified with epoxy resins

In order to obtain enough epoxy groups and large molecular weight, modified siloxane was mixed with other epoxy resins before curing. The content of siloxane in resins was reduced; thus, resulting in poor thermal stability of cured materials.

Abstract: Modified polysiloxane resins are a class of synthetic polymer materials with excellent properties, widely used in electronics, aerospace, automotive, construction, and other fields. This paper primarily introduces the preparation methods, structural characteristics, and application areas of modified polysiloxane resins, while providing an outlook on their development trends.

1. Introduction With the advancement of technology, the demand for high-performance materials has increased significantly. As materials with good mechanical properties, heat resistance, chemical stability, and electrical insulation, modified polysiloxane resins have been extensively applied in numerous fields. This paper briefly discusses the definition, classification, and preparation methods of these resins.

2. Definition of Modified Polysiloxane Resins Modified polysiloxane resins are polymer materials formed by reacting organic or inorganic compounds with crosslinking agents such as silane coupling agents, resulting in covalent bonds between silicon atoms and polymer chains. Their molecular structures contain siloxane bonds (Si–O), endowing them with excellent heat resistance, weatherability, and electrical insulation.

3. Classification of Modified Polysiloxane Resins Based on different application requirements, modified polysiloxane resins can be classified into the following categories:

1. Thermosetting modified polysiloxane resins: These resins undergo chemical reactions and solidify upon heating. Common examples include epoxy resin and phenolic resin.
2. Thermoplastic modified polysiloxane resins: These resins remain plastic and do not undergo chemical reactions during heating. Examples include polyimide and polyetheretherketone (PEEK).
3. Hybrid thermosetting-thermoplastic modified polysiloxane resins: These combine the advantages of both thermosetting and thermoplastic materials. An example is polyurethane-modified siloxane resin.

4. Preparation Methods of Modified Polysiloxane Resins

1. Silane coupling agent method: Silicon atoms form covalent bonds with polymer chains by introducing silane coupling agents. This method is simple and cost-effective but requires precise control of the type and dosage of silane coupling agents.
2. Free radical polymerization method: Initiators trigger free radical polymerization of silane coupling agents to form siloxane bonds. This method allows control over molecular weight and distribution but requires high reaction temperatures and pressures.
3. Ion exchange method: Silicon atoms form covalent bonds with polymer chains through ion exchange reactions. This method can produce high-purity siloxane bonds but involves complex operations and high costs.

5. Structural Characteristics of Modified Polysiloxane Resins

1. Excellent heat resistance: These resins have a high glass transition temperature (Tg), maintaining physical stability under high-temperature conditions.
2. Superior chemical stability: They exhibit strong resistance to most chemicals and are less prone to chemical reactions.
3. Fine electrical insulation: With low dielectric constants and dielectric loss tangents, they possess excellent electrical insulating properties.
4. Good mechanical performance: They demonstrate high tensile strength and hardness, withstanding significant external forces.

6. Application Areas of Modified Polysiloxane Resins

1. Electronic encapsulation materials: Due to their excellent electrical insulation and heat resistance, they are widely used in the encapsulation of electronic devices.
2. Aerospace field: Their outstanding heat resistance and corrosion resistance make them suitable for high-temperature and high-pressure environments in aerospace.
3. Automotive industry: They can be used to manufacture automotive components (e.g., engine hoods, body panels) with good wear resistance and impact resistance.
4. Construction field: They serve as building materials (e.g., waterproof coatings, sealing materials) with excellent weatherability and water resistance.

As high-performance polymer materials, modified polysiloxane resins have found broad applications across multiple fields. With growing demands for advanced materials, their research and application prospects are promising. In the future, continuous technological innovations are expected to yield more optimized modified polysiloxane resin products, contributing further to societal development.