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A kind of glass fiber reinforced polypropylene composition and preparation method thereof

A polypropylene composition and polypropylene technology, applied in the field of polymer materials, can solve problems such as poor compatibility and easy occurrence of floating fibers, and achieve high production efficiency, low dimensional stability, and reduced floating fibers.

Active Publication Date: 2022-04-26
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, it is necessary for the present invention to provide a glass fiber reinforced polypropylene composition and a preparation method thereof, which consists of high melt index polypropylene, low melt index polypropylene, glass fiber, compatibilizer, silicone powder, zinc oxide Made with other additives, it not only solves the problem of poor compatibility when glass fiber is used to reinforce the modified polypropylene matrix, but also solves the problem that the final product is prone to floating fibers when glass fiber is used for modified polypropylene

Method used

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  • A kind of glass fiber reinforced polypropylene composition and preparation method thereof
  • A kind of glass fiber reinforced polypropylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] According to parts by weight, 5 parts of high melt index polypropylene with a melt index of 100g / 10min, 72 parts of low melt index polypropylene with a melt index of 10g / 10min, 3 parts of PP-g-MAH with a graft rate of 1.0%, Add 0.5 part of silicone powder, 0.5 part of zinc oxide (Zibo Haishun Zinc Industry Co., Ltd.), 0.2 part of antioxidant 1330 and 0.2 part of antioxidant 168 into a high-speed mixer at 70°C and mix for 4 minutes at 1000 rpm, then mix The mixture is put into the feeding barrel of the twin-screw extruder, and 20 parts of chopped non-alkali glass fiber with a glass fiber length of 3.0 mm and a single filament diameter of 13 μm are fed into the extruder from the side feeding port, and the main engine speed is 300 rpm , the main feeding speed is 11rpm, and the side feeding speed is 10rpm, and then extruded and granulated by a twin-screw extruder to obtain the low-floating fiber glass fiber reinforced polypropylene composition described in Example 1, wherein...

Embodiment 2

[0035] According to parts by weight, 10 parts of high melt index polypropylene with a melt index of 150g / 10min, 56 parts of low melt index polypropylene with a melt index of 3g / 10min, 4 parts of PP-g-MAH with a graft rate of 1.2%, 1 part of silicone powder, 1 part of zinc oxide (Weifang Hengfeng Chemical Co., Ltd.), 0.2 part of lubricant EBS, 0.2 part of antioxidant 1330 and 0.2 part of antioxidant 168, add to a high-speed mixer and mix at 70°C and 800rpm 6 minutes, put this mixture into the feeding barrel of the twin-screw extruder again, glass fiber length 4.5mm, 30 parts of short-cut alkali-free glass fibers with a monofilament diameter of 14 μm are added to the extruder from the side feed port, wherein , the host speed is 350rpm, the main feed speed is 12rpm, and the side feed speed is 11rpm, then extruded and granulated by a twin-screw extruder to obtain the low-floating fiber glass fiber reinforced polypropylene composition described in Example 2, wherein the two The wor...

Embodiment 3

[0037] According to parts by weight, 12 parts of high melt index polypropylene with a melt index of 200g / 10min, 47 parts of low melt index polypropylene with a melt index of 5g / 10min, 6 parts of PP-g-MAH with a graft rate of 1.5%, 1 part of silicone powder, 1.5 parts of zinc oxide (Weifang Hengfeng Chemical Co., Ltd.), 0.3 parts of lubricant EBS, 0.25 parts of antioxidant 1330 and 0.25 parts of antioxidant 168 are added to a high-speed mixer at 80°C and mixed at 600rpm 5 minutes, put this mixture into the feeding barrel of the twin-screw extruder again, glass fiber length 4.0mm, 35 parts of short-cut alkali-free glass fibers with a monofilament diameter of 15 μm are added to the extruder from the side feed port, wherein , the host speed is 400rpm, the main feed speed is 13rpm, and the side feed speed is 13rpm, then extruded and granulated by a twin-screw extruder to obtain the low-floating fiber glass fiber reinforced polypropylene composition described in Example 3, wherein th...

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Abstract

The invention discloses a glass fiber reinforced polypropylene composition and a preparation method thereof, which comprises 5-15 parts of high-melt-index polypropylene, 35-75 parts of low-melt-index polypropylene, 20-40 parts of glass fiber, 3~8 parts, 0.5~1 part of silicone powder, 0.5~2 parts of zinc oxide and 0.4~0.8 parts of other additives are prepared according to parts by weight; wherein, the high melt index polypropylene is prepared at a temperature of 230°C and a load of 2.16 The melt index under the condition of kg is 100-200g / 10min, and the melt index of the low melt index polypropylene under the condition of a temperature of 230°C and a load of 2.16kg is 1-10g / 10min. The glass fiber-reinforced polypropylene composition of the invention has excellent performances of high strength, high rigidity, dimensional stability and low floating fiber.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a glass fiber reinforced polypropylene composition and a preparation method thereof. Background technique [0002] Polypropylene (PP) is a crystalline polymer with a regular structure. It is widely used in the automobile industry and household for its advantages of low odor, non-toxicity, low density, low price, easy processing, good chemical stability, and good electrical insulation. It has a wide range of applications in electrical appliances, electronics, packaging, building materials and furniture. [0003] However, polypropylene usually has disadvantages such as low strength, poor rigidity, large shrinkage rate, poor dimensional stability of products, and easy shrinkage deformation. Therefore, it is necessary to strengthen and modify polypropylene to address the above shortcomings. [0004] At present, the commonly used reinforcement modification methods include...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L83/04C08L51/06C08K3/22C08K7/14C08J5/04
CPCC08J5/043C08J2323/12C08J2423/12C08J2483/04C08J2451/06C08K2003/2296
Inventor 杨桂生邵灵芝李术朱敏王华姚晨光
Owner HEFEI GENIUS NEW MATERIALS
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