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PBT resin has good chemical and physical properties, such as high crystallization rate, rapid molding, good electrical properties, low friction coefficient, but when used alone will make the mechanical properties of PBT resin is not outstanding, such as easy to burn, low thermal deformation temperature, easy to warping, etc. So PBT resin rarely used alone, generally is modified after the formation of modified PBT, used in all walks of life. There are many ways to modify PBT, such as physical modification (flame retardant or glass fiber filling reinforcement), chemical modification (copolymerization, cross-linking, degradation, etc.), blending with other resins to form plastic alloys (such as PC/PBT,PET/PBT, etc.). Here are some common modified PBTS. Let's take a look at some of them.
1. Glass fiber reinforced PBT(PBT GF)
Common glass fiber filled PBT are PBT GF20,PBT GF25,PBT GF30,PBTGF35,PBT GF40. These types of PBT GF are added to the PBT with different content of glass fiber and toughening agent, while retaining the chemical resistance of PBT to improve its mechanical strength, impact toughness and heat resistance, to overcome the PBT resin notch sensitivity.
Glass fiber filled PBT has high impact strength, high heat resistance, creep resistance, excellent fatigue resistance, spray, electroplating and good size stability.
Applications: Home appliance accessories, industrial product parts, building materials, hydrolyzable automobile connectors.