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Halogen-free flame-retardant high-impact polypropylene resin and preparation method thereof

A high-impact polypropylene, polypropylene technology, applied in the polypropylene field, can solve the problems of poor compatibility between flame retardants and polypropylene substrates, poor toughness of polypropylene resin, and difficulty in dispersion, etc. Stable, simple process effect

Pending Publication Date: 2021-04-27
CHONGQNG PRET NEW MATERIAL +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects in the above-mentioned existing technologies, a halogen-free flame-retardant high-impact polypropylene resin and its preparation method are provided to solve the problem of poor compatibility between existing flame retardants and polypropylene substrates, difficulty in dispersing, and the difficulty of dispersing polypropylene resins. The main problem of poor toughness

Method used

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  • Halogen-free flame-retardant high-impact polypropylene resin and preparation method thereof
  • Halogen-free flame-retardant high-impact polypropylene resin and preparation method thereof
  • Halogen-free flame-retardant high-impact polypropylene resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A halogen-free flame-retardant high-impact polypropylene resin, prepared from the following components and raw materials in parts by weight:

[0032]

[0033] Among them, the main flame retardant in the composite flame retardant is aluminum hydroxide with a particle size of 20-50nm, and the auxiliary flame retardant is microencapsulated red phosphorus with a particle size of 500-1000nm, and the ratio of the two is 25:10 to control the flame retardant The effective content of the agent compound is 10%, the lubricant is zinc stearate, the dispersant is EVA resin, the antioxidant is 1010, 1076; polypropylene, compound flame retardant, lubricant, antioxidant, dispersant Put them into a high-speed mixer according to the proportion, and mix them thoroughly for 1 to 10 minutes; melt, extrude, cool, and pelletize through a twin-screw extruder.

[0034] The processing temperatures in zones I to X of the twin-screw extruder are 150°C, 185°C, 205°C, 205°C, 210°C, 220°C, 225°C, ...

Embodiment 2

[0036] A halogen-free flame-retardant high-impact polypropylene resin, prepared from the following components and raw materials in parts by weight:

[0037]

[0038] Among them, the main flame retardant in the composite flame retardant is aluminum hydroxide with a particle size of 20-50nm, and the auxiliary flame retardant is microencapsulated red phosphorus with a particle size of 500-1000nm, and the ratio of the two is 25:10 to control the flame retardant The effective content of the agent compound is 10%, the lubricant is zinc stearate, the dispersant is EVA resin, and the antioxidant is 1010, 1076; polypropylene, composite flame retardant, lubricant, and antioxidant are combined in proportion Put it into the high-speed mixer and mix it thoroughly for 1-10 minutes; put polypropylene, composite flame retardant, lubricant, antioxidant, and dispersant into the high-speed mixer in proportion and mix it thoroughly for 1-10 minutes ; Melt, extrude, cool and pelletize through a...

Embodiment 3

[0041] A halogen-free flame-retardant high-impact polypropylene resin, prepared from the following components and raw materials in parts by weight:

[0042]

[0043]

[0044] Among them, the main flame retardant in the composite flame retardant is aluminum hydroxide with a particle size of 20-50nm, and the auxiliary flame retardant is microencapsulated red phosphorus with a particle size of 500-1000nm, and the ratio of the two is 25:10 to control the flame retardant The effective content of the agent compound is 10%, the lubricant is zinc stearate, the dispersant is EVA resin, and the antioxidant is 1010, 1076; the polypropylene, composite flame retardant, lubricant, and dispersant are put in together in proportion Put it into the high-speed mixer and mix it thoroughly for 1-10 minutes; put polypropylene, composite flame retardant, lubricant, antioxidant, and dispersant into the high-speed mixer in proportion, and mix it thoroughly for 1-10 minutes; It is melted, extrude...

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Abstract

The invention discloses halogen-free flame-retardant high-impact-resistance polypropylene resin and a preparation method thereof. The halogen-free flame-retardant high-impact-resistance polypropylene resin comprises the following raw materials in percentage by weight: 45-85% of polypropylene resin, 10-50% of a composite flame retardant, 1-3% of a lubricant, 0.01-2% of a dispersing agent and 0.01-0.5% of an antioxidant. The polypropylene resin mainly overcomes the problems that the compatibility of a halogen-free flame retardant and polypropylene resin is poor, product performance is reduced when a large amount of the halogen-free flame retardant is added, and particularly, low-temperature toughness is poor. The polypropylene resin is characterized in that a maleic anhydride grafted POE coated nanoscale flame retardant compound is used as a composite flame retardant, so the halogen-free flame retardant is greatly promoted to be well dispersed in the polypropylene resin, and the halogen-free flame retardant polypropylene composite material can function as a compatilizer and has a strong toughening effect.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant high-impact polypropylene resin and a preparation method thereof, belonging to the technical field of polypropylene. Background technique [0002] With the rapid development of the automobile industry, higher requirements are put forward for automobile lightweight, safety, interior comfort and environmental protection. As a common material for auto parts, modified polypropylene has the outstanding advantages of wide source, low density, good mechanical balance, chemical corrosion resistance, easy processing and low price. [0003] However, polypropylene is extremely flammable, and its limiting oxygen index (LOI) is only about 18%. The requirement of flame retardancy is also paid more and more attention. The traditional flame retardant method is to add halogen flame retardants, but it will produce toxic and corrosive gases when burned, which has great side effects on people and the environment. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08K9/10C08K3/22C08K3/02C08K13/06
CPCC08L23/12C08K2201/011C08K2003/2227C08K2201/003C08K2003/026C08L2201/02C08L23/0853C08K9/10C08K3/22C08K3/02C08K13/06
Inventor 冯晓峰李克成王勇张锴徐美玲蔡青周文
Owner CHONGQNG PRET NEW MATERIAL
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