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Maleic anhydride grafted polypropylene composition and preparation method thereof

A technology of grafting polypropylene and maleic anhydride, applied in the field of maleic anhydride grafted polypropylene composition and its preparation, can solve the problem of high residual amount of maleic anhydride monomer, difficulty in satisfying compatibilizer and melt viscoelasticity Poor and other problems, to achieve the effect of increasing the grafting rate of the product, excellent viscoelasticity, and improving the viscoelasticity of the melt

Inactive Publication Date: 2016-06-22
FINE BLEND COMPATILIZER JIANGSU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the compatibilizer used in long glass fiber reinforced polypropylene composite materials can only choose the PP-g-MAH compatibilizer commonly used in the market, and the common compatibilizers in the market are almost all produced by the traditional melt grafting method. There are generally problems such as relatively low grafting rate, high residual amount of maleic anhydride monomer and poor melt viscoelasticity, which makes it difficult to meet the demand for compatibilizers for long glass fiber reinforced polypropylene composites

Method used

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  • Maleic anhydride grafted polypropylene composition and preparation method thereof
  • Maleic anhydride grafted polypropylene composition and preparation method thereof
  • Maleic anhydride grafted polypropylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] First, 9.56 kg of polypropylene powder (PP045, Zhenhai Refining & Chemical) was uniformly mixed with 400 g of maleic anhydride in acetone solution by spraying, and then 10 g of antioxidant 1010, 10 g of antioxidant 168 and 20g calcium stearate, add from main feed after mixing by high-speed mixer; Initiator dicumyl peroxide (DCP) content is that the white oil solution of 10% adds from second side feeding port. Adjust the addition of the main feeding port and the second side feeding port to be 30kg / h and 600g / h respectively.

[0035] In this plan, the temperature of the co-rotating twin-screw extruder is 140°C, 160°C, 180°C, 200°C, 200°C, 200°C, 200°C, 200°C, 200°C, 200°C, 200°C, 190°C. The aspect ratio of the twin-screw is 48, the screw speed is 250rpm, and the residence time of the melt in the screw is about 60s. The relevant test results of the prepared samples are shown in Table 1, and the rheological data are as follows figure 2 shown.

Embodiment 2

[0037] First, 9.56kg polypropylene powder is uniformly mixed with the acetone solution that is dissolved with 400g maleic anhydride by spraying, then add 10g of antioxidant 1010, 10g of antioxidant 168 and 20g calcium stearate, pass After the high-speed mixer mixes evenly, add it from the main feed; add styrene from the first side feed port. Adjust the main feed, the initiator dicumyl peroxide (DCP) content of 10% white oil solution is added from the second side feed port, adjust the main feed, the first side feed port and the second side feed The addition amount of mouth is 30kg / h, 600g / h and 300g / h respectively.

[0038] In this plan, the temperature of the co-rotating twin-screw extruder is 140°C, 160°C, 180°C, 200°C, 200°C, 200°C, 200°C, 200°C, 200°C, 200°C, 200°C, 190°C. The aspect ratio of the twin-screw is 48, the screw speed is 250rpm, and the residence time of the melt in the screw is about 60s. The relevant test results of the obtained samples are shown in Table 1,...

Embodiment 3

[0040]First, 9.56kg polypropylene powder is uniformly mixed with the acetone solution that is dissolved with 400g maleic anhydride by spraying, then add 10g of antioxidant 1010, 10g of antioxidant 168 and 20g calcium stearate, pass After the high-speed mixer mixes uniformly, it is added from the main feed; 10% white oil solution is added from the second side feed port, and the addition of the main feed, the first side feed port and the second side feed port is adjusted to be 30kg / h, 600g / h and 600g / h respectively.

[0041] In this plan, the temperature of the co-rotating twin-screw extruder is 140°C, 160°C, 180°C, 200°C, 200°C, 200°C, 200°C, 200°C, 200°C, 200°C, 200°C, 190°C. The aspect ratio of the twin-screw is 48, the screw speed is 250rpm, and the residence time of the melt in the screw is about 60s. The relevant test results of the obtained samples are shown in Table 1, and the rheological data are as follows: figure 2 .

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Abstract

The invention provides a special maleic anhydride grafted polypropylene composition for long-glass-fiber-reinforced polypropylene. The maleic anhydride grafted polypropylene composition comprises the following components in percentage by weight: 94-98% of polypropylene-base compound, 1-5% of maleic anhydride, 0.01-1% of initiator, 0.3-3% of styrene, 0.3-3% of third grafting monomer, 0.1-1% of antioxidant and 0.1-1% of lubricant. The styrene is used as a second grafting monomer, thereby effectively lowering the polypropylene beta- bond ruptures in the reaction process and enhancing the maleic anhydride grafting efficiency; and the introduced polyfunctional group third grafting monomer and styrene have favorable synergistic actions, thereby further enhancing the maleic anhydride grafting efficiency, and being beneficial to forming the branched structure from the polypropylene graft and enhancing the melt viscoelasticity and temperature color distortion resistance during processing.

Description

technical field [0001] The invention relates to a maleic anhydride grafted polypropylene composition specially used for long glass fiber reinforced polypropylene and a preparation method thereof, belonging to the technical field of polymer material modification. Background technique [0002] Long glass fiber reinforced polypropylene composites have excellent mechanical properties and corrosion resistance, are non-toxic, tasteless, and cheap, and have become one of the new material varieties that have attracted much attention. The impregnation process of long glass fiber reinforced thermoplastic composites is the key to the preparation of composites with excellent performance. The key to the process is to solve the high viscosity of the molten resin and the dispersion of fibers, so as to enhance the bonding ability of the two interfaces. The focus of the long glass fiber reinforced polypropylene process is to improve the interface bonding strength between polypropylene and gl...

Claims

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Application Information

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IPC IPC(8): C08F255/02C08F222/06C08F212/08C08F222/14C08K5/134C08K5/526C08K5/098C08K7/14C08L51/06
CPCC08F255/02C08K5/098C08K5/1345C08K5/526C08K7/14C08L51/06C08F222/104
Inventor 史鹏伟汤俊杰李昌鸿田冶金光润
Owner FINE BLEND COMPATILIZER JIANGSU CO LTD
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