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Low-smell food-grade anti-fatigue polypropylene composite material and preparation method thereof

A polypropylene, food-grade technology, applied in the field of low-odor food-grade fatigue-resistant polypropylene composites and its preparation, can solve the problems of poor low-temperature impact, large molding shrinkage, and low density

Inactive Publication Date: 2017-12-08
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polypropylene has high crystallinity and regular structure, so its melting point is as high as 167°C. It has the advantages of heat resistance and corrosion resistance, and has excellent mechanical properties. Its strength and hardness are higher than HDPE. Light general-purpose plastic, but PP has poor low-temperature impact resistance and large molding shrinkage

Method used

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  • Low-smell food-grade anti-fatigue polypropylene composite material and preparation method thereof
  • Low-smell food-grade anti-fatigue polypropylene composite material and preparation method thereof
  • Low-smell food-grade anti-fatigue polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Take various raw materials respectively by formula ratio;

[0030]

[0031] (2) Add the above-mentioned polypropylene resin, PP-g-MAH compatibilizer, barium sulfate, talcum powder, deodorant masterbatch, antioxidant, lubricant, and nucleating agent into a high-speed mixer and mix at high speed for 2 minutes;

[0032] (3) Put the mixed components into a parallel twin-screw extruder to melt, extrude and granulate. The barrel temperature of the extruder is: 190°C, the screw speed is 500r / min, and the melt pressure is 1.6MPa ; The vacuum degree is -0.04~-0.06MPa, that is, the low-odor food-grade fatigue-resistant polypropylene compound is obtained.

Embodiment 2

[0034] (1) Take various raw materials respectively by formula ratio;

[0035]

[0036] (2) Add the above-mentioned polypropylene resin, PP-g-MAH compatibilizer, barium sulfate, talcum powder, deodorant masterbatch, antioxidant, lubricant, and nucleating agent into a high-speed mixer and mix at high speed for 3 minutes;

[0037] (3) Put the mixed components into a parallel twin-screw extruder to melt, extrude and granulate. The barrel temperature of the extruder is: 200°C, the screw speed is 550r / min, and the melt pressure is 1.8MPa ; The vacuum degree is -0.06~-0.08MPa, that is, the low-odor food-grade fatigue-resistant polypropylene compound can be obtained.

Embodiment 3

[0039] (1) Take various raw materials respectively by formula ratio;,

[0040]

[0041] (2) Add the above-mentioned polypropylene resin, PP-g-MAH compatibilizer, barium sulfate, talcum powder, deodorant masterbatch, antioxidant, lubricant, and nucleating agent into a high-speed mixer and mix at high speed for 2 minutes;

[0042] (3) Put the mixed components into a parallel twin-screw extruder to melt, extrude and granulate. The barrel temperature of the extruder is: 200°C, the screw speed is 600r / min, and the melt pressure is 1.7MPa ; The vacuum degree is -0.07~-0.09MPa, that is, the low-odor food-grade fatigue-resistant polypropylene compound is obtained.

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Abstract

The invention relates to the technical field of plastics, and in particular to a low-smell food-grade anti-fatigue polypropylene composite material and a preparation method thereof. The low-smell food-grade anti-fatigue polypropylene composite material is mainly prepared from the following components in parts by weight: 50 to 68 parts of polypropylene, 2 to 5 parts of a PP-g-MAH (Polypropylene-grafted-Maleic Anhydride) compatilizer, 10 to 15 parts of barium sulfate, 15 to 20 parts of talcum powder, 5 to 10 parts of smell removal master batches, 0.3 to 0.6 part of an antioxidant, 0.1 to 0.5 part of a nucleating agent and 0.5 to 1.0 part of a lubricating agent. The low-smell food-grade anti-fatigue polypropylene composite material disclosed by the invention has the following advantages that 1, the food grade is detected by adopting a method of GB4806.7-2016 food safety national standard for food contact plastic materials and products, and the result is qualified; 2, the fatigue resistance is detected by adopting an internal pressure-resistant testing method of a GB / T6111-2003 fluid transportation thermoplastic plastic pipe, and the result is qualified; 3, the smell property is detected by adopting a public standard PV3900 method, and the smell grade is less than 3.5 grade.

Description

technical field [0001] The invention relates to the technical field of plastics, in particular to a low-odor food-grade fatigue-resistant polypropylene compound and a preparation method thereof. Background technique [0002] Polypropylene resin is a white waxy solid, odorless and non-toxic, and its density is very low, at 0.89-0.91g / cm 3 In between, is the lightest general-purpose plastic. Polypropylene has high crystallinity and regular structure, so its melting point is as high as 167°C. It has the advantages of heat resistance and corrosion resistance, and has excellent mechanical properties. Its strength and hardness are higher than HDPE. Light general-purpose plastic, but PP has poor low-temperature impact resistance and large molding shrinkage. [0003] In 2016, the National Health and Family Planning Commission issued the National Food Safety Standard for Food Contact Materials and 53 national food safety standards including General Safety Requirements for Products...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08L23/06C08K13/02C08K3/30C08K3/34C08K5/134C08K5/526C08J9/12
CPCC08L23/12C08J9/12C08J2201/024C08J2323/12C08J2423/06C08J2451/06C08K2003/3045C08K2201/003C08L2201/08C08L2203/14C08L2205/02C08L2205/03C08L2205/24C08L51/06C08L23/06C08K13/02C08K3/30C08K3/34C08K5/1345C08K5/526
Inventor 邢纪普范保林徐元元吕志勇彭耀李荣群
Owner ORINKO NEW MATERIAL CO LTD