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Application Of FB High Temperature Resistant Flame Retardant Thermosetting Phenolic Resin Products In Rubber

Jun 08, 2020

FB high temperature resistant resin series products are high-performance boron modified phenolic resin produced by Bengbu Tianyu High Temperature Resin Material Co., Ltd. This product has passed the provincial appraisal and is the first in China. Its performance is at the domestic leading level and won the bronze invention award of the National Invention Exhibition He County and City Science and Technology Progress Award, National Spark Gold Award, are high-tech products recognized by the Anhui Science and Technology Department.

The characteristic of this resin is its decomposition temperature is up to above 500℃, oxygen index is OI 48.5, weight retention rate is up to above 60% at 900℃. It has excellent ablation resistance and good process performance. Etching materials and insulation materials have a wide range of applications. In the civil field, it can be used as a binder for brake materials, clutch plates, super-hard abrasive tools, fiberglass/composite materials, EPDM or nitrile rubber, high-temperature rubber rollers, refractory materials and various carbon products.

In many application fields, a single variety is difficult to meet the requirements of diverse performances. This requires the blending of multiple materials to form a multi-element composite material, which complements each other. The matrix of the friction material is generally phenolic resin, which is important for the performance of the material. Impact. With the changes in the working conditions of various vehicles and machinery, the thermal performance of friction materials and the stability of braking torque requirements continue to increase, which puts forward new requirements for matrix materials, such as higher thermal decomposition temperature, sufficient Coefficient of friction and good heat recovery and wear resistance. Choosing modified phenolic resin can improve the crosslink density of the resin after curing, make the friction material excellent in high temperature performance and improve its heat resistance, but it also often leads to increased brittleness. Blending and modifying with a proper amount of soft rubber as the "dispersed phase" and the rigid and rigid resin "continuous phase" to form a so-called "polymer alloy", which improves the toughness of the matrix (reduces elasticity) while maintaining heat resistance Modulus) is the most common and effective method. Blending, that is, using a physical method to make the rubber dispersed phase uniformly dispersed in the resin continuous phase, and then in the process of high temperature and high pressure, its particles are precipitated from it, and when the material is subjected to external forces, it disperses to balance the stress and prevent crack extension, thus To achieve the purpose of toughening.

FB resin can be blended with a variety of rubbers, and it has the functions of sulfur-assisting, tackifying, flame retardant, and improving process performance for synthetic rubber, especially EPDM rubber, especially for improving the high temperature performance and ablation resistance of rubber products. Has a significant effect. In the field of rubber insulation materials, the addition of FB resin to the EPDM rubber ablation material has significantly improved the process performance of the original rubber ablation resistant material, no pollution, can reduce the density of the product, good carbonization performance and improve the resistance to burning The linear ablation rate is 0.038/Sec, which is one of the ideal fillers for rubber ablation materials. Adding 15% of powdered FB resin to fluororubber can improve the high temperature resistance of fluororubber by 80℃. In all kinds of brake materials, the addition of FB resin can effectively improve the high-temperature friction factor of the brake pads, reduce the wear rate and thermal decline. The high-speed train semi-metal brake pads developed using FB high-temperature resin series products passed the 1:1 brake power bench test. The results show that the friction coefficient of the semi-metal brake material is 0.35 ± 0.04, and the friction and wear curve meets In order to meet the requirements of linearity, there are no cracks on the friction surface, and the material does not drop. The wear rate reaches the standard of the International Railway Union UIC514-4.

At present, FB resin has a wide range of applications in the field of ablation resistance, thermal insulation materials and train brake pads in the cutting-edge field. New products of ablation resistance materials and brake materials developed by many domestic units have passed the appraisal, among which train brake pad products Used for export.

FB high temperature resistant resin can be widely used in EPDM, nitrile rubber, polyurethane, styrene-butadiene rubber, fluororubber, etc. The resin has block solid and powdered resin powder for users, according to different production processes, and Block, powder, and liquid rubber blends can be used for rubber-based ablation-resistant materials, thermal insulation materials, sealing materials, high-temperature wear-resistant materials, damping materials, shock-absorbing materials, synthetic material train brake plates, clutch plates, high temperature Flame retardant rubber conveyor belt, high temperature rubber roller and other rubber products.