High-fluidity and high-rigidity alloy composite material and preparation method thereof

A composite material and high fluidity technology, which is applied in the field of high rigidity alloy composite material and its preparation, and high fluidity, can solve the problems of fluidity, dispersion and poor rigidity, achieve high fluidity, excellent impact toughness, improve The effect of mobility

Inactive Publication Date: 2020-05-12
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor fluidity, dispersibility, and rigidity of the above-mentioned polypropylene material under excellent impact toughness, the present invention provides a high fluidity, high rigidity alloy composite material and its preparation method

Method used

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  • High-fluidity and high-rigidity alloy composite material and preparation method thereof
  • High-fluidity and high-rigidity alloy composite material and preparation method thereof
  • High-fluidity and high-rigidity alloy composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, a high fluidity, high rigidity alloy composite preparation method,

[0039] S1: Preparation of compatibilizer,

[0040] S11: Add PP, PB, and xylene solvents into the reactor, stir slowly and raise the temperature to 180-200°C;

[0041] PP is homopolypropylene, PB is n-butylene, both materials are general-purpose grades, xylene is analytically pure, and the mass ratio of PP:PB:xylene is 6:4:20; the stirring speed is 150 ~200r / min;

[0042] S12: adding an initiator into the reactor to carry out cross-linking and grafting reaction until the raw materials are completely dissolved;

[0043] 1h, 2h, and 3h after the start of the reaction, add 0.5% to 2.5% initiator (benzoyl peroxide / dicumyl peroxide) to carry out cross-linking and grafting reaction;

[0044] S13: After the raw materials are completely dissolved, react at a constant temperature of 100-150°C for 0.5-1h to obtain a light yellow viscous colloidal liquid;

[0045] After the pellets ...

Embodiment 2

[0059] The difference between this example and Example 1 is that the alloy composite material is prepared in S2: 80.0% of PP resin, 7.0% of PB resin, 0.0% of compatibilizer, 2.0% of toughening agent, 10.0% of inorganic powder, and 0.5% of auxiliary agent are added to Mix in a high-speed mixer with a rotation speed of 500r / min for 3 minutes, and then granulate through a twin-screw extruder, that is, after melting and plasticizing, the granules are extruded from the die head, and the extrusion processing temperature is 180 ° C, cooled, Dry and pelletize to obtain alloy composite material.

[0060] The obtained alloy composite material is tested according to the method of Example 1, and the tensile strength obtained is 23.2MPa; the bending strength is 29.1MPa; the bending modulus is 2210.1MPa; the notched impact is 7.6KJ / m 2 ; Melt index 25.6g / 10min.

Embodiment 3

[0062] The difference between this example and Example 1 is that the alloy composite material is prepared in S2: 80.0% of PP resin, 7.0% of PB resin, 0.5% of compatibilizer, 2.0% of toughening agent, 10.0% of inorganic powder, and 0.5% of auxiliary agent are added to Mix in a high-speed mixer with a rotation speed of 500r / min for 3 minutes, and then granulate through a twin-screw extruder, that is, after melting and plasticizing, the granules are extruded from the die head, and the extrusion processing temperature is 180 ° C, cooled, Dry and pelletize to obtain alloy composite material.

[0063] The obtained alloy composite material is tested according to the method of Example 1, and the tensile strength obtained is 30.1MPa; the bending strength is 38.2MPa; the bending modulus is 2530.1MPa; the notched impact is 10.3KJ / m 2 ; Melt index 30.5g / 10min.

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Abstract

The invention belongs to the technical field of modified alloy composite materials, and particularly relates to a high-fluidity and high-rigidity alloy composite material and a preparation method thereof. The high-fluidity and high-rigidity alloy composite material comprise the following raw materials by weight. 60-80% of a polypropylene resin, 10-20% of a polybutylene resin, 0.5-3.0% of a compatilizer, 5-15% of a toughening agent, 10-30% of inorganic powder and 1-5% of an auxiliary agent. According to the invention, inorganic powder is well dispersed in a base material on the premise of maintaining excellent comprehensive mechanical properties while the fluidity of the material is improved; a PP/PB cross-linking grafting compatilizer is adopted, and has the same chain segment as a blend,so that the PP/PB cross-linking grafting compatilizer has an emulsifying effect at the PP and PB two-phase interface so as to improve the compatibility of the base material polypropylene/polybutylenealloy system, ensure the high fluidity, the high dispersibility and the high rigidity of the polypropylene/polybutylene alloy material, and achieve the injection molding of large-scale products on general injection molding machines; and the composite material can be widely used in the fields of household electrical appliances, automobiles and the like.

Description

technical field [0001] The invention belongs to the technical field of modified alloy composite materials, and in particular relates to a high-fluidity, high-rigidity alloy composite material and a preparation method thereof. Background technique [0002] Polypropylene resin has good physical properties and formability, and also has the advantages of good chemical corrosion resistance, no peculiar smell, and non-toxicity. At the same time, the raw material is abundant and the price is cheap, but it also has some shortcomings. When large-scale finished products are formed, the fluidity and The mechanical properties of the product cannot meet the actual needs. In order to solve the problems existing in the application of polypropylene, it needs to be filled and modified. Polybutene is an inert polymer with good mechanical properties, chemical stability, wear resistance, high filler filling and other advantages. The blending of the two can achieve the ideal effect of high flu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/20
CPCC08L23/12C08L2205/08C08L23/20
Inventor 王美晓唐梓健刘冬丽丁龙龙谭新宪王琳
Owner GREE ELECTRIC APPLIANCES INC
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