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High-gloss and high-rigidity polypropylene composite material and preparation method thereof

A composite material and polypropylene technology, applied in the field of polymer materials, can solve the problems of irritating odor, poor fluidity, increased cost, etc., and achieve the effect of improving surface gloss, improving ease of mold release, and increasing crystallization speed

Active Publication Date: 2020-04-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional domestic production of high-gloss and high-rigidity polypropylene materials usually uses a method of filling a large amount of inorganic substances, resulting in high specific gravity, poor fluidity, low mechanical properties, and unsatisfactory gloss.
[0004] Chinese invention patent CN103059412 A discloses a high-gloss, low-shrinkage modified polypropylene composite material and its preparation method, which is to add 5-30% polymethyl methacrylate to the polypropylene base resin, 5-20% Due to the addition of a large amount of polymethyl methacrylate, a compatibilizer must be added to solve the problem of phase separation, which not only increases the cost, but also produces a pungent odor during processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Put 92.5 parts of polypropylene, 2.5 parts of polymethyl methacrylate, 3.5 parts of filler, 0.4 part of nucleating agent, 0.6 part of lubricant, 0.07 part of coupling agent and 0.3 part of antioxidant in a high-speed mixer by weight Mixing in the medium for 3 minutes, the obtained mixed material is melted and extruded through a parallel twin-screw extruder, then cooled and cut into pellets, the temperature of the barrel of the extruder is 180~230°C, the feed rate of the extruder is 30Kg / h, homogenized and dried, The desired polypropylene composite is obtained. In this embodiment: the nucleating agent is aryl phosphate salt nucleating agent na-11, the lubricant is PP wax, polypropylene is homopolymerized powdered polypropylene resin, and polymethyl methacrylate has a molecular weight of 600,000 Polymethyl methacrylate powder between ~800,000, the fineness is 90 mesh; the filler is 1250 mesh barium sulfate, the coupling agent is titanate coupling agent 101; the antioxidan...

Embodiment 2

[0022] Put 92 parts of polypropylene, 3 parts of polymethyl methacrylate, 3 parts of filler, 0.45 part of nucleating agent, 0.5 part of lubricant, 0.08 part of coupling agent and 0.2 part of antioxidant in a high-speed mixer by weight The mixture was mixed for 3 minutes, and the obtained mixture was melted and extruded through a parallel twin-screw extruder, and then cooled and cut into pellets. The barrel temperature of the extruder was 180~230°C, and the feed rate of the extruder was 20Kg / h. Homogenized and dried to obtain the desired polypropylene composite material. In this embodiment: the nucleating agent is aryl phosphate salt nucleating agent na-11, the lubricant is PP wax, polypropylene is homopolymerized powdered polypropylene resin, and polymethyl methacrylate has a molecular weight of 600,000 Polymethyl methacrylate powder between ~800,000, the fineness is 80 mesh; the filler is 1250 mesh muscovite, and the fineness of the filler is ; the coupling agent is silane co...

Embodiment 3

[0024] By weight, 93 parts of polypropylene, 2 parts of polymethyl methacrylate, 4 parts of filler, 0.35 part of nucleating agent, 0.7 part of lubricant, 0.07 part of coupling agent, and 0.4 part of antioxidant are placed in a high-speed mixer Mixed in the medium for 3 minutes, the obtained mixed material is melted and extruded through a parallel twin-screw extruder, and then cooled and cut into pellets. The temperature of the extruder barrel is 180~230°C, and the feed rate of the extruder is 25Kg / h, homogenized and dried. The desired polypropylene composite is obtained. In this embodiment: the nucleating agent is aryl phosphate salt nucleating agent na-11, the lubricant is PP wax, polypropylene is homopolymerized powdered polypropylene resin, and polymethyl methacrylate has a molecular weight of 600,000 Polymethyl methacrylate powder between ~800,000, the fineness is 85 mesh; the filler is 1250 mesh kaolin; the coupling agent is titanate coupling agent 101; the antioxidant is...

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Abstract

The invention discloses a high-gloss and high-rigidity polypropylene composite material and a preparation method thereof, and belongs to the technical field of polymeric materials. The polypropylene composite material is characterized by comprising the following components in parts by weight: 90-95 parts of polypropylene, 1-4 parts of polymethyl methacrylate, 1-6 parts of a filling agent, 0.3-0.5part of a nucleating agent, 0.2-1 part of a lubricating agent, 0.05-0.1 part of a coupling agent and 0.1-0.5 part of an antioxidant, wherein the nucleating agent is an alpha crystal form nucleating agent. The preparation method comprises the following steps: proportionally putting the materials into a mixer, uniformly mixing to obtain a mixed material; melting and extruding the obtained mixed material through a parallel twin-screw extruder, cooling, granulating, homogenizing, and drying to obtain the required high-gloss and high-rigidity polypropylene material. According to the invention, thesurface gloss of the material is improved, and the problem of poor mechanical properties of the product caused by a large amount of inorganic filler is solved.

Description

technical field [0001] A high-gloss, high-rigidity polypropylene composite material and a preparation method thereof belong to the technical field of polymer materials. Background technique [0002] Polypropylene (PP) is one of the fastest-growing varieties in the plastic industry. It has the advantages of good mechanical properties, light specific gravity, non-toxicity, easy processing, and corrosion resistance; And the field of packaging has been widely used. High-gloss, high-rigidity polypropylene materials are gradually replacing relatively expensive ABS plastics due to their good surface gloss, and are widely used in applications that have certain requirements for gloss, heat resistance, and hardness, such as rice cookers and electric irons , hair dryer, electric kettle, microwave oven, electric heater and other small appliances. As my country is currently the largest producer, consumer and exporter of small household appliances, it is of great significance to develop...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L33/12C08K5/523
CPCC08L23/12C08L2205/03C08L2205/025C08L2205/24C08L33/12C08K5/523
Inventor 陈华赉李丽李延亮陈智能明月黄峰
Owner CHINA PETROLEUM & CHEM CORP
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