Glass Fiber Reinforced PBT Material Is Easy To Warp
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Glass Fiber Reinforced PBT Material Is Easy To Warp
Product Details
Glass fiber reinforced PBT material is easy to warp
the reason:
Warpage is the result of uneven shrinkage of the material. The orientation and crystallization of the components in the material, improper process conditions during injection molding, incorrect gate shape and position during mold design, uneven wall thickness during product design, etc. will cause product warpage.
Glass fiber reinforced PBT material is easy to warp
The warpage of PBT/GF composites is mainly because the orientation of the glass fiber in the flow direction limits the shrinkage of the resin. The induced crystallization of PBT around the glass fiber strengthens this effect, making the longitudinal (flow direction) shrinkage of the product smaller than the transverse direction. (Direction perpendicular to the flow direction), this uneven shrinkage causes the warpage of the PBT/GF composite material.
Solution:
One is to add minerals to reduce the anisotropy caused by glass fiber orientation by using the shape symmetry of the mineral filler;
The second is to add amorphous materials to reduce the crystallinity of PBT and reduce the uneven shrinkage caused by crystallization. For example, adding ASA or AS, but they have poor compatibility with PBT, and appropriate compatibilizers need to be added:
The third is to adjust the injection molding process, such as appropriately increasing the mold temperature, and appropriately increasing the injection cycle.
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Glass Fiber Reinforced PBT Material Is Easy To Warp
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Visit Kinggor to get the best products. You will get the best quality products always from Kinggor.
Visit Kinggor to get the best products. You will get the best quality products always from Kinggor.
Visit Kinggor to get the best products. You will get the best quality products always from Kinggor.
Visit Kinggor to get the best products. You will get the best quality products always from Kinggor.
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