A kind of high texture automobile interior material and preparation method thereof

Abstract

The invention relates to a high-texture automotive interior material and a preparation method thereof. The material is prepared from components in parts by weight as follows: 40-70 parts of polypropylene, 1-10 parts of a softening agent, 10-25 parts of a reinforcing agent, 2-5 parts of an accelerant, 5-20 parts of elastomers, 5-25 parts of mineral powder and 1-3 parts of a functional aid. Orientedfiber forming is realized with a strong shear and ultra-high-speed stretching method, the strength, rigidity, toughness and heat resistance of original polypropylene materials are substantially improved, the high-quality appearance product is obtained, good dispersion of the elastomers in a system is realized through high shearing dispersion, the surface of the obtained material touches soft andhas low gloss, the hard-plastic sense of the product is eliminated, the visual grade and the hand feeling comfortability of the automotive plastic interior are improved, and the most comfortable interior space is created.

Description

technical field

[0001] The invention relates to a car interior material and a preparation method thereof, in particular to a high-quality car interior material and a preparation method thereof, belonging to the field of material technology. Background technique

[0002] With the improvement of people's living standards, people's requirements for vehicle performance are getting higher and higher not only in terms of power, economy, and safety, but also in terms of vehicle comfort. A comfortable driving environment has gradually become an important symbol of modern cars. Among them, car interior parts are the first parts that people see and feel when they enter the car, and its grade level is a very important part of the comfort of the whole car. At present, most middle and low-end car interior parts are mainly made of hard plastic injection molding, giving people a low-end feeling. In order to improve the comfort level of visible interior parts, OEMs mainly use skinning or ...

Examples

Embodiment 1

[0035] A method for preparing a high-quality automotive interior material, comprising the following steps:

[0036] Step 1: Add 40 parts of polypropylene with a melt index of 30g / 10min, 25 parts of PET, 5 parts of ethylene-acrylic acid copolymer, 1 part of antioxidant 168, 1 part of silicone, and 1 part of light stabilizer 3808 into the mixer Mix in medium for 1-3 minutes, then add the mixed material into the twin-screw extruder, undergo plasticization, strong shear dispersion, extrusion, stranding, air-drying, and granulation; wherein, after the material exits the die of the extruder, Using high-speed stretching method, the stretching speed is 3000r / min, so that the ratio of material diameter to die diameter is equal to 1:40, and at the same time, it quickly enters the cooling water tank, cools and shapes, and obtains oriented fiber reinforced polypropylene composite material; twin-screw extruder Cylinder temperature 180-280 ℃.

[0037] Step 2: Put the oriented fiber-forming...

Embodiment 2

[0040] A method for preparing a high-quality automotive interior material, comprising the following steps:

[0041] Step 1: 70 parts of polypropylene with a melt index of 60g / 10min, 10 parts of polyamide 6, 2 parts of ethylene-acrylic acid copolymer, 1 part of antioxidant 1098, 0.2 parts of ethylene bisstearamide, light stabilizer Add 0.3 parts of 3808 into the mixer and mix for 1-3 minutes, then add the mixed material into the twin-screw extruder, and undergo plasticization, strong shear dispersion, extrusion, stranding, air-drying, and granulation; among them, the material comes out After the die of the extruder, the high-speed stretching method is adopted, and the stretching speed is 1500r / min, so that the ratio of the diameter of the material to the diameter of the die is equal to 1: 20, and at the same time, it quickly enters the cooling water tank, cools and shapes, and obtains oriented fiber-reinforced polypropylene composite. Materials; Twin-screw extruder barrel tempe...

Embodiment 3

[0045] A method for preparing a high-quality automotive interior material, comprising the following steps:

[0046] Step 1: 60 parts of polypropylene with a melt index of 20g / 10min, 20 parts of polyamide 66, 8 parts of vinyl chloride-acrylate copolymer, 1 part of antioxidant 168, 0.6 part of silicone, and 0.4 part of light stabilizer 3808 Add it into the mixer and mix for 1-3min, then add the mixed material into the twin-screw extruder, go through plasticization, strong shear dispersion, extrusion, drawing, air-drying, and granulation; among them, the material comes out of the extruder After the die, the high-speed drawing method is adopted, and the drawing speed is 2500r / min, so that the ratio of the diameter of the material to the diameter of the die is equal to 1:30. The barrel temperature of the screw extruder is 180-280°C.

[0047] Step 2: Put the oriented fiber-forming polypropylene composite material obtained in Step 1, 8 parts of SEBS, 5 parts of whiskers, and 5 parts...

technical field

[0001] The invention relates to a car interior material and a preparation method thereof, in particular to a high-quality car interior material and a preparation method thereof, belonging to the field of material technology. Background technique

[0002] With the improvement of people's living standards, people's requirements for vehicle performance are getting higher and higher not only in terms of power, economy, and safety, but also in terms of vehicle comfort. A comfortable driving environment has gradually become an important symbol of modern cars. Among them, car interior parts are the first parts that people see and feel when they enter the car, and its grade level is a very important part of the comfort of the whole car. At present, most middle and low-end car interior parts are mainly made of hard plastic injection molding, giving people a low-end feeling. In order to improve the comfort level of visible interior parts, OEMs mainly use skinning or ...

Examples

Embodiment 1

[0035] A method for preparing a high-quality automotive interior material, comprising the following steps:

[0036] Step 1: Add 40 parts of polypropylene with a melt index of 30g / 10min, 25 parts of PET, 5 parts of ethylene-acrylic acid copolymer, 1 part of antioxidant 168, 1 part of silicone, and 1 part of light stabilizer 3808 into the mixer Mix in medium for 1-3 minutes, then add the mixed material into the twin-screw extruder, undergo plasticization, strong shear dispersion, extrusion, stranding, air-drying, and granulation; wherein, after the material exits the die of the extruder, Using high-speed stretching method, the stretching speed is 3000r / min, so that the ratio of material diameter to die diameter is equal to 1:40, and at the same time, it quickly enters the cooling water tank, cools and shapes, and obtains oriented fiber reinforced polypropylene composite material; twin-screw extruder Cylinder temperature 180-280 ℃.

[0037] Step 2: Put the oriented fiber-forming...

Embodiment 2

[0040] A method for preparing a high-quality automotive interior material, comprising the following steps:

[0041] Step 1: 70 parts of polypropylene with a melt index of 60g / 10min, 10 parts of polyamide 6, 2 parts of ethylene-acrylic acid copolymer, 1 part of antioxidant 1098, 0.2 parts of ethylene bisstearamide, light stabilizer Add 0.3 parts of 3808 into the mixer and mix for 1-3 minutes, then add the mixed material into the twin-screw extruder, and undergo plasticization, strong shear dispersion, extrusion, stranding, air-drying, and granulation; among them, the material comes out After the die of the extruder, the high-speed stretching method is adopted, and the stretching speed is 1500r / min, so that the ratio of the diameter of the material to the diameter of the die is equal to 1: 20, and at the same time, it quickly enters the cooling water tank, cools and shapes, and obtains oriented fiber-reinforced polypropylene composite. Materials; Twin-screw extruder barrel tempe...

Embodiment 3

[0045] A method for preparing a high-quality automotive interior material, comprising the following steps:

[0046] Step 1: 60 parts of polypropylene with a melt index of 20g / 10min, 20 parts of polyamide 66, 8 parts of vinyl chloride-acrylate copolymer, 1 part of antioxidant 168, 0.6 part of silicone, and 0.4 part of light stabilizer 3808 Add it into the mixer and mix for 1-3min, then add the mixed material into the twin-screw extruder, go through plasticization, strong shear dispersion, extrusion, drawing, air-drying, and granulation; among them, the material comes out of the extruder After the die, the high-speed drawing method is adopted, and the drawing speed is 2500r / min, so that the ratio of the diameter of the material to the diameter of the die is equal to 1:30. The barrel temperature of the screw extruder is 180-280°C.

[0047] Step 2: Put the oriented fiber-forming polypropylene composite material obtained in Step 1, 8 parts of SEBS, 5 parts of whiskers, and 5 parts...

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