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Isotropic high-strength polypropylene composite material and preparation method thereof

An isotropic, composite material technology, applied in the field of high-strength polypropylene composite materials and their preparation, can solve the problem that the isotropy of whiskers is not fully exerted, the effect interval is not at the same level, and the four-needle whiskers are very different. Large and other problems, to achieve fine distribution, ensure processing performance, and improve the effect of inhibition

Active Publication Date: 2021-03-16
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the size of the four-needle whiskers is very different from that of GF raw materials, resulting in the fact that the range of action is not at the same level, and the isotropy of the whiskers cannot be fully utilized.

Method used

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  • Isotropic high-strength polypropylene composite material and preparation method thereof
  • Isotropic high-strength polypropylene composite material and preparation method thereof
  • Isotropic high-strength polypropylene composite material and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0047] The preparation method of described self-made glass fiber comprises the steps:

[0048] S1. Material selection

[0049] The raw materials are weighed according to the proportion, wherein the mass proportion of each component is: alkali-free glass fiber 1-40, acrylic resin 55-94 and compatibilizer 5;

[0050] S2, mixing

[0051] Slowly mix the above raw materials in the air, and control the mixing speed to 80-100r / min;

[0052] S3, feed extrusion

[0053] Add the mixed material from the main feeding port of the twin-screw extruder, control the speed of the main machine to 300-400r / min, and control the extrusion temperature to 190-210°C;

[0054] S4, preprocessing

[0055] The extruded strips are water-cooled, air-dried and fully homogenized;

[0056] S5. Calcination

[0057] Put the pretreated strip into a muffle furnace for calcination to remove excess matrix, and control the calcination temperature at 650-750°C. The residue obtained after calcination is the finis...

Embodiment 1

[0067] An isotropic high-strength polypropylene composite material includes the following components, and the mass ratio of each component is: PP resin 81, self-made glass fiber 15, tetrapod zinc oxide whisker 2, compatibilizer 2, Compatibility additive 0.5, antioxidant 0.2.

[0068] The production raw materials of the self-made glass fiber include the following components, and the mass ratio of each component is: alkali-free glass fiber 1, acrylic resin 55 and compatibilizer 5.

[0069] The preparation method of described self-made glass fiber comprises the steps:

[0070] S1. Material selection

[0071] Weigh the raw materials according to the ratio;

[0072] S2, mixing

[0073] Slowly mix the above raw materials in the air, and control the mixing speed to 80r / min;

[0074] S3, feed extrusion

[0075] Add the mixed material from the main feed port of the twin-screw extruder, control the speed of the main machine to 300r / min, and control the extrusion temperature to 190°...

Embodiment 2

[0088] An isotropic high-strength polypropylene composite material includes the following components, and the mass ratio of each component is: PP resin 78, self-made glass fiber 15, tetrapod zinc oxide whisker 5, compatibilizer 2, Compatibility additive 0.5, antioxidant 0.2.

[0089] The production raw materials of the self-made glass fiber include the following components, and the mass ratio of each component is: 40 alkali-free glass fibers, 94 acrylic resins and 5 compatibilizers.

[0090] The preparation method of described self-made glass fiber comprises the steps:

[0091] S1. Material selection

[0092] Weigh the raw materials according to the ratio;

[0093] S2, mixing

[0094] Slowly mix the above raw materials in the air, and control the mixing speed to 100r / min;

[0095] S3, feed extrusion

[0096] Add the mixed material from the main feeding port of the twin-screw extruder, control the speed of the main machine to 400r / min, and control the extrusion temperature...

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Abstract

The invention discloses an isotropic high-strength polypropylene composite material and a preparation method thereof. The composite material comprises the following raw material components by mass: 76-81 parts of PP resin, 15 parts of self-made glass fibers, 2-7 parts of tetrapod-like zinc oxide whiskers, 2 parts of a compatilizer, 0.5 parts of a compatible auxiliary agent, and 0.2 parts of an antioxidant. The production raw materials of the self-made glass fibers comprise the following components in parts by mass: 1-40 parts of alkali-free glass fibers, 55-94 parts of acrylic resin and 5 parts of a compatilizer. The preparation method of the composite material comprises the following steps of: S1, selecting materials; S2, mixing the materials; and S3, carrying out feeding and extruding. According to the preparation method, a filling modification technology of specific components is adopted, and the glass fibers and the tetrapod-like zinc oxide whiskers with proper sizes are used as auxiliary materials, so that the shrinkage rate of the composite material is effectively increased while the processability of the composite material is ensured, and the prepared composite material hasgood processability and relatively low after-shrinkage degree.

Description

technical field [0001] The invention belongs to the field of modified materials, and in particular relates to an isotropic high-strength polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene (PP) is one of the most widely used synthetic resins. It has the advantages of excellent performance, non-toxicity, good chemical resistance, low cost, and easy processing. It is widely used in home appliances, automobiles, medical care, packaging, and daily necessities. and other fields. Polypropylene in household appliances, automobiles and other fields is mostly used after modification. With the increase of polypropylene production capacity and the continuous improvement of modification methods, the use scenarios of modified polypropylene materials are gradually expanding. [0003] As a typical case of general-purpose plastic engineering, glass fiber (GF) reinforced PP has the characteristics of low cost and excellent mechanica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L51/06C08L23/10C08K13/06C08K9/06C08K7/14C08K7/08C08K5/5419
CPCC08L23/12C08L23/14C08L2205/02C08L2205/03C08L51/06C08L23/10C08K13/06C08K9/06C08K7/14C08K7/08C08K5/5419
Inventor 陈熙宋钰李荣群
Owner ORINKO NEW MATERIAL CO LTD
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