Low-warpage heat-resistant nylon composition and preparation method thereof

The invention discloses a low-warpage heat-resistant nylon composition and a preparation method thereof. The low-warpage heat-resistant nylon composition is prepared by the following steps: stirring 40-68 parts of nylon, 5-10 parts of poly-1,4-cyclohexane dimethylene terephthalate, 20-45 parts of glass fibers, 0-5 parts of a flexibilizer, 0.4-1.5 parts of a heat-resistant additive and 0.5-2 parts of processing aids in high-speed mixer for 3-5 minutes, performing melt extrusion on the mixture by virtue of a twin-screw extruder, and granulating to obtain the product. The low-warpage heat-resistant nylon composition disclosed by the invention has the balanced mechanical property and low warping property after high-temperature heat treatment, and the application range of the nylon material is widened.