1、Enhanced mechanical strength and water resistance in waterborne

Hydroxyl functionalized MQ silicone resin improves the water resistance and hydrolysis resistance of waterborne polyurethane. As an alternative to solvent-based polyurethane, waterborne polyurethane (WPU) uses water as dispersants and can significantly reduce VOC.

2、Study on the thermal stability of TPU modified by MQ Resin

A total of 50 wt% MQ resin containing 5 wt% vinyl MQ exhibited optimal thermal stability and was consequently chosen. This silicone rubber composite was blended with TPU at high temperature using an internal mixer to produce a modified TPU.

3、聚醚改性MQ树脂增强聚氨酯弹性体.pdf

When the content of E-MQ resin is 8% (E-MQ resin accounts for the total mass fraction of the CPU) the tensile strength of polyurethane elastomer reached to 20.8 MPa, in- creased by 22.4% comparing to the basic CPU, tear strength is 82 KN m- 1, Shore A hardness is 82 de- · grees.

4、聚醚改性MQ树脂增强聚氨酯弹性体

Based on a cross-linked polyurethane (CPU) system composed of polyoxypropylene polyol (PPG) and diphenylmethane diisocyanate (MDI), a kind of polyether modified MQ (E-MQ) resin was added to prepare E-MQ reinforced pouring type CPU elastomer.

5、MQ Resin

The modification of silicone MQ resin is also extremely easy, and it is convenient to prepare modified resins for special purposes and to develop functional silicone MQ resin. silicone MQ resins have great industrial application potential and a wide range of uses.

Polyether Modified MQ Resin Reinforced Polyurethane

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Enhanced mechanical strength and water resistance in waterborne

In this study, MQ silicone resin (MQ) was used to modify two kinds of self-made spherical boron nitrides (SBNs), with different particle sizes, using the sedimentation method.

Study on the thermal stability of TPU modified by MQ Resin‐Filled

Procuring silicone rubber composite with diferent content of vinyl MQ silicone resin was prepared and its thermal stability was evaluated. A total of 50 wt% MQ resin containing 5 wt% vinyl MQ exhibited optimal thermal stability and was conse-quently chosen.

Chinese Journal of Materials Research

Based on a cross-linked polyurethane (CPU) system composed of polyoxypropylene polyol (PPG) and diphenylmethane diisocyanate (MDI), a kind of polyether modified MQ (E-MQ) resin was added to prepare E-MQ reinforced pouring type CPU elastomer.

Study on the thermal stability of TPU modified by silicone rubber

A total of 50wt% MQ resin containing 5wt% vinyl MQ exhibited optimal thermal stability and was consequently chosen. This silicone rubber composite was blended with TPU at high temperature...

In modern industry, the rapid advancement of materials science plays a critical role in enhancing product performance, reducing costs, and meeting specific functional requirements. As a high-performance polymer material, MQ resin-modified polyurethane (PU) has gained widespread applications across numerous fields due to its unique physicochemical properties and excellent comprehensive performance. This article explores the preparation principles, performance characteristics, and innovative application cases of MQ resin-modified PU in practice.

MQ resin is a synthetic resin with exceptional temperature resistance, chemical resistance, and hydrolysis resistance, while polyurethane is a thermoplastic elastomer derived from polyols and polyisocyanates. Incorporating MQ resin into PU significantly improves mechanical strength, wear resistance, tear resistance, and flexibility.

The preparation process of MQ resin-modified PU involves the following steps:

1. Selection of MQ resin as the modifier.
2. Grafting reactions to covalently bond MQ resin onto PU chains, forming a copolymer.
3. Post-processing (e.g., drying, plasticization) to achieve desired physical and chemical properties.

Key characteristics of MQ resin-modified PU include:

1. Enhanced mechanical properties: MQ resin increases hardness, tensile strength, and elongation at break, making it suitable for wear-resistant and impact-resistant materials.
2. Superior temperature resistance: The modified PU maintains stability at elevated temperatures, suitable for high-temperature environments.
3. Improved chemical resistance: MQ resin acts as a protective layer, enhancing stability against corrosive chemicals.
4. High flexibility: Enhanced softness makes it ideal for applications requiring a gentle touch, such as footwear, sports equipment, and automotive interiors.
5. Optimized processing performance: MQ resin improves flowability and reduces molding shrinkage, simplifying manufacturing processes.

Applications span multiple industries:

1. Automotive: Used in high-performance tire treads, sealing strips, and components to improve fuel efficiency and safety.
2. Construction: Serves as a base for exterior coatings, waterproof membranes, and flooring materials, offering superior weatherability and durability.
3. Electronics: Employed as insulating materials for electrical devices, providing both dielectric protection and mechanical support.
4. Sports equipment: Utilized in shoe soles, basketball court coatings, and noise-reducing surfaces.
5. Medical field: Applied in biomedical implants (e.g., artificial joints, vascular stents) due to its biocompatibility and mechanical robustness.

Challenges remain, including cost control, environmental regulations, and long-term performance retention. Future research should focus on developing economically viable modification techniques, optimizing production processes, and ensuring material stability under diverse conditions.

MQ resin-modified PU stands out as a promising material in materials science. With ongoing technological innovation, it is poised to play a pivotal role in advancing various industries and contributing to societal progress.