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Polypropylene-based graft and preparation method thereof

A technology of polypropylene-based grafts, applied in the field of polypropylene-based grafts and their preparation, can solve the problems of inconvenient feeding, difficult polypropylene particles, poor compatibility of polypropylene materials, etc., and achieve broad application prospects and Industrial value, easy industrial production, effect of ensuring compatibility

Inactive Publication Date: 2019-04-09
FINE BLEND COMPATILIZER JIANGSU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of small molecule silane coupling agent is that it has strong reactivity to inorganic fillers. However, because it is a small molecule liquid, the operation is complicated, it is inconvenient to add materials, and it is not easy to blend evenly with polypropylene particles, which may cause excessive small molecule residues in composite materials. The patient is in good health and has poor compatibility with polypropylene materials

Method used

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  • Polypropylene-based graft and preparation method thereof
  • Polypropylene-based graft and preparation method thereof
  • Polypropylene-based graft and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment ～7

[0033] Examples 1-7 relate to a polypropylene-based graft, and its corresponding formula is shown in Table 1. The preparation of this polypropylene base graft comprises the steps:

[0034] First, dry-mix polypropylene-based powder (PP045, Zhenhai Refining & Chemical), vinyl silane coupling agent, initiator, antioxidant (168 / 1010), and lubricant silicone powder, and then feed them into double Screw extruder. The temperature of co-rotating twin-screw extruder used in this scheme is 140°C, 160°C, 180°C, 200°C, 200°C, 200°C, 200°C, 220°C, 200°C, 200°C, 200°C °C, 190 °C. The aspect ratio of the twin-screw is 48, the screw speed is 300rpm, and the residence time of the melt in the screw is about 60s. A melt grafting reaction is carried out. After pelletizing and post-processing, the polypropylene-based graft product is obtained.

Embodiment 1～7

[0036]

[0037]

[0038] The above-mentioned embodiments 1-6 correspond to grafted products P1#, P2#, P3#, P4#, P5#, P6#. Then above-mentioned graft product P1#, P2#, P3#, P4#, P5#, P6# and CMG9801 (PP-MAH) (comparative example 3), vinyltriethoxysilane (comparative example 2) and KH-550 (silane coupling agent) (comparative example 1) was evaluated for application effect.

[0039] Effect evaluation method:

[0040] Add the following components:

[0041] Take by weighing 67 parts by weight of polypropylene (Seco 7926);

[0042] 30 parts by weight of alkali-free glass fiber (giant stone 988A);

[0043] 2 parts by weight of KH-550, vinyltriethoxysilane, 9801, P1#, P2#, P3#, P4#, P5#, P6#;

[0044] The antioxidant 1010 of 0.5 weight part;

[0045] 0.5 parts by weight of lubricant MB-4;

[0046] Except for glass fiber, put other components into a high-efficiency mixer and mix for 5 minutes at room temperature, and then discharge the premix; add the premix from the main f...

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Abstract

The invention discloses a polypropylene-based graft and a preparation method thereof. The graft is prepared from the following components in parts by weight: 94-99 parts of a polypropylene-based compound, 0.5-5 parts of a vinyl silicon coupling agent, 0.01-1 part of an initiator, 0.1-1 part of an antioxidant and 0.1-1 part of a lubricant. The invention also relates to the preparation method of thepolypropylene-based graft. The preparation method comprises the following steps: uniformly mixing the raw materials through a mixture; then feeding the raw materials into a dual screw extruder; and carrying out a melted grafting reaction under the condition that the temperature range is 140-220 DEG C and the rotating speed of the screw is 200-500 rpm and carrying out extruding and granulating. Compared with the prior art, the polypropylene-based graft prepared by the invention has very good coupling action to a glass fiber of talc powder enhanced polypropylene material. The preparation methodis simple in process and convenient for scaled production application.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polypropylene-based graft and a preparation method thereof. Background technique [0002] Polypropylene-based composite materials, including glass fiber reinforced polypropylene, talcum powder filled polypropylene, aluminum hydroxide filled polypropylene, etc. Polypropylene composite materials have the advantages of low price, high thermal stability, excellent processing performance, good corrosion resistance, etc., and are widely used in automobiles, home appliances, electronic appliances and other fields. However, as the performance requirements of composite materials are getting higher and higher in the market, polypropylene-based composite materials have been looking for better additives to modify composite materials to meet the needs of more fields. [0003] Coupling agents commonly used to enhance the performance of polypropylene-based composites include maleic...

Claims

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Application Information

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IPC IPC(8): C08F255/02C08F230/08C08L23/10C08L51/06C08K7/14C08K3/34
CPCC08F255/02C08L23/10C08F230/08C08L51/06C08K7/14C08K3/34
Inventor 朱从山
Owner FINE BLEND COMPATILIZER JIANGSU CO LTD