Reinforced polyester alloy composite material and preparation method thereof

Abstract

The invention discloses a reinforced polyester alloy composite material and a preparation method thereof. By weight proportion, the reinforced polyester alloy composite material comprises the following components: 5 percent to 80 percent of PC resin, 5 percent to 80 percent of PET resin, 5 percent to 80 percent of PBT resin, 5 percent to 50 percent of glass fibers, 0.5 percent to 10 percent of PA6 oligomer and 0.5 percent to 10 percent of other additives. The method includes the following steps that: the materials, except the glass fibers and the PA6 oligomer, are weighed and prepared according to the proportion, and are mixed in a high-speed mixer for 3 to 5 minutes. The uniformly mixed materials are fed into a double-screw extruder, wherein the glass fibers are fed via a first exhaust port, temperatures from a feed inlet to an extrusion mold are respectively 200 DEG C to 230 DEG C, 220 DEG C to 250 DEG C, 240 DEG C to 260 DEG C, 240 DEG C to 270 DEG C and 250 DEG C to 280 DEG C. Therotation speed of a main unit is 20Hz to 60Hz, and a plastic injection molding machine is then used for sampling. The composite material has the advantages of high hardness, high rigidity, each machining, good evenness and high glossiness.

Description

technical field

[0001] The invention belongs to the field of polymer composite materials, and in particular relates to a reinforced polyester alloy composite material and a preparation method thereof. Background technique

[0002] PC, PBT, PET are all important engineering plastics. PC resin has good impact resistance, but is sensitive to notch, heat resistance is average, and the price is more expensive; PBT resin has good fluidity, high flatness, high rigidity and hardness, and the price is cheap, but the impact performance is not very good; PET resin recycling Easy, high rigidity and strength, cheap, but relatively brittle, difficult to modify. As a result, many alloys that blend two or three of PC, PBT, and PET have appeared. Such alloys can effectively play the advantages of PC, PBT, and PET resins, suppress their shortcomings, and even appear that single resins do not have. performance, such as

[0003] Good low temperature impact resistance, high heat distortion te...

Examples

Embodiment 1～4

[0037] The weight percentages of various raw materials in the composite material are shown in Table 1. The temperatures of the twin-screw extruder are (from the feed port to the extrusion die): 210°C, 230°C, 250°C, 260°C, 270°C . The host speed is 40 Hz.

[0038] Table 1 Embodiment 1-4 formula and material performance table

[0039]

Embodiment 5～7

[0041] The weight percentages of various raw materials in the composite material are shown in Table 2. The temperatures of the twin-screw extruder are (from the feeding port to the extrusion die): 210°C, 230°C, 250°C, 260°C, 270°C . The host speed is 40 Hz.

[0042] Table 2 embodiment 5-7 formula and material performance table

[0043]

[0044]

Embodiment 8～11

[0046] The weight percentages of various raw materials in the composite material are shown in Table 3. The temperatures of the twin-screw extruder are (from the feeding port to the extrusion die): 210°C, 230°C, 250°C, 260°C, 270°C . The host speed is 40 Hz.

[0047] Table 3 embodiment 8-11 formula and material performance table

[0048]

[0049]

technical field

[0001] The invention belongs to the field of polymer composite materials, and in particular relates to a reinforced polyester alloy composite material and a preparation method thereof. Background technique

[0002] PC, PBT, PET are all important engineering plastics. PC resin has good impact resistance, but is sensitive to notch, heat resistance is average, and the price is more expensive; PBT resin has good fluidity, high flatness, high rigidity and hardness, and the price is cheap, but the impact performance is not very good; PET resin recycling Easy, high rigidity and strength, cheap, but relatively brittle, difficult to modify. As a result, many alloys that blend two or three of PC, PBT, and PET have appeared. Such alloys can effectively play the advantages of PC, PBT, and PET resins, suppress their shortcomings, and even appear that single resins do not have. performance, such as

[0003] Good low temperature impact resistance, high heat distortion te...

Examples

Embodiment 1～4

[0037] The weight percentages of various raw materials in the composite material are shown in Table 1. The temperatures of the twin-screw extruder are (from the feed port to the extrusion die): 210°C, 230°C, 250°C, 260°C, 270°C . The host speed is 40 Hz.

[0038] Table 1 Embodiment 1-4 formula and material performance table

[0039]

Embodiment 5～7

[0041] The weight percentages of various raw materials in the composite material are shown in Table 2. The temperatures of the twin-screw extruder are (from the feeding port to the extrusion die): 210°C, 230°C, 250°C, 260°C, 270°C . The host speed is 40 Hz.

[0042] Table 2 embodiment 5-7 formula and material performance table

[0043]

[0044]

Embodiment 8～11

[0046] The weight percentages of various raw materials in the composite material are shown in Table 3. The temperatures of the twin-screw extruder are (from the feeding port to the extrusion die): 210°C, 230°C, 250°C, 260°C, 270°C . The host speed is 40 Hz.

[0047] Table 3 embodiment 8-11 formula and material performance table

[0048]

[0049]