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Low gloss scratch resistant glass fiber reinforced PP composite material and preparation method thereof

A composite material and scratch-resistant technology, which can be used in low-gloss scratch-resistant glass fiber reinforced PP composite materials and their preparation, and in the field of automotive interior parts. achieve excellent rigidity

Active Publication Date: 2013-04-10
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the low gloss of polypropylene composites in automotive interiors is mainly achieved by selecting low-gloss polypropylene raw materials, but low-gloss polypropylene is expensive and does not meet the growing requirements of the automotive industry.

Method used

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  • Low gloss scratch resistant glass fiber reinforced PP composite material and preparation method thereof
  • Low gloss scratch resistant glass fiber reinforced PP composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 87.5 kg of polypropylene (brand name is PP-SP179), 0.2 kg of phenolic heat stabilizer Irganox 1010 (purchased from CIBA company), 0.3 kg of processing aid EBS, 5 kg of ethylene-octene copolymer POE (brand name is DF610) , 2 kg of maleic anhydride grafted polypropylene (brand CA-100) was melt mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1, and 5 kg of chopped alkali-free glass fiber 305K (Chongqing International production) was added from the side feeding port through a weight-loss weighing scale, and extruded and granulated at 170°C to obtain a low-gloss and scratch-resistant glass fiber reinforced PP composite masterbatch A, and its properties are shown in Table 1.

[0020] Table 1 Performance of masterbatch A

[0021] performance

Embodiment 2

[0023] 69 kg of polypropylene (brand name PP-7033N), 0.5 kg of phenolic heat stabilizer Irganox 1010 (purchased from CIBA Company), 0.5 kg of processing aid EB-FF, 10 kg of hydrogenated styrene-butadiene-styrene Tri-block copolymer (brand SEBS-3154), 5 kg of maleic anhydride grafted ethylene octene copolymer (brand 493D) were melt mixed and dispersed in a twin-screw extruder with an aspect ratio of 40:1, Add 15 kg of chopped non-alkali glass fiber 508A (produced by Jushi) from the side feeding port through a weight-loss weighing scale, and extrude and granulate at 210°C to obtain a low-gloss and scratch-resistant glass fiber-reinforced PP composite material matrix Granule B, its properties are shown in Table 2.

[0024] Table 2 Performance of masterbatch B

[0025] performance

Embodiment 3

[0027] 56.5 kg of polypropylene (brand name is PP-RP346R), 0.7 kg of phenolic heat stabilizer Irganox 1010 (purchased from CIBA company), 0.8 kg of processing aid EB-FF, 15 kg of EPDM copolymer (brand name is K2340A ), 7 kg of maleic anhydride-grafted polypropylene (Bondyram 1001) were melt-mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1, and 20 kg of chopped E-glass fiber 508A (giant stone Production) was added from the side feed port through a weight-loss weighing scale, and extruded and granulated at 220°C to obtain a low-gloss and scratch-resistant glass fiber reinforced PP composite masterbatch C, and its properties are shown in Table 3.

[0028] Table 3 Properties of Masterbatch C

[0029] performance

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Abstract

The invention discloses low gloss scratch resistant glass fiber reinforced PP (Propene Polymer) composite material and a preparation method thereof. The composite material comprises the following components in weight percentage: 38 to 88 wt% of polypropylene with the rate being of 0.01 to 100g / 10min, 5 to 30 wt% of chopped alkali-free glass fiber, 2 to 10 wt% of polar monomer graft polymer compatilizer, 0.2 to 1.0 wt% of heat stabilizer, 0.3 to 1.0 wt% of processing agent and 5 to 20 wt% of flexibilizer. The composite material has excellent rigidity, heat resistance, normal-temperature and low-temperature impact performance, low gloss and scratch resistance, the tensile strength is larger than or equal to 35Mpa, the elongation at break is larger than or equal to 5 percent, the bending modulus is larger than or equal to 2000 Mpa, the heat deflection temperature (0.45Mpa) is larger than or equal to 120 DEG C, the notch impact strength at 23 DEG C is larger than or equal to 35 KJ / m<2>, the notch impact strength at minus 30 DEG C is larger than or equal to 15KJ / m<2>, the gloss Gs (60 DEG C) is smaller than or equal to 2.4 GU, and the chromatic aberration Delta L of the composite material is smaller than or equal to 1.5 after the composite material is scratched by 10N force.

Description

technical field [0001] The invention relates to a glass fiber-reinforced PP composite material, in particular to a low-gloss and scratch-resistant glass fiber-reinforced PP composite material and a preparation method thereof, which are suitable for automotive interiors with high requirements for low gloss and scratch resistance pieces. Background technique [0002] Car interior materials or household appliances materials will inevitably produce slight scratches or scratches during use, which will damage the appearance of the product and affect consumers' use mood. At present, inorganic fillers such as talcum powder are generally added to polypropylene composites for automotive interiors to increase the rigidity and heat resistance of the material, and rubber is added to improve the toughness and low temperature resistance of the material, but both the addition of inorganic fillers and rubber will make the material suffer. Surface scratches are more obvious after minor scrat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/10C08L51/06C08L23/06C08L23/08C08L53/02C08L23/16C08L75/04C08K7/14C08J5/04B29B9/06
Inventor 孙刚周英辉李国明程文超李欣李志平陈延安丁超罗忠富
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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