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Polypropylene composite with good dimensional stability and preparation method thereof

A technology of dimensional stability and composite materials, applied in the field of polypropylene materials, which can solve the problems of few active groups, inability to show excellent performance, and prone to agglomeration.

Inactive Publication Date: 2018-09-25
NINGXIA YANCHI WEST CHANGXIANG AGRI BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, there are very few active groups on the surface of carbon fibers and carbon nanotubes, and the interaction with polymer material groups is very weak, and the aspect ratio and specific surface area of ​​carbon nanotubes are large, so it is difficult to polymerize them when they are used to prepare polymer composites. Evenly dispersed in the material, easy to agglomerate, unable to reflect its excellent performance

Method used

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  • Polypropylene composite with good dimensional stability and preparation method thereof
  • Polypropylene composite with good dimensional stability and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1 raw material preparation

[0057] 1. Preparation of calcium fruit fiber:

[0058] The preparation method of the calcium fruit fiber comprises the following steps: uniformly mixing fresh calcium fruit stems, calcium fruit leaves and waste sawdust at a mass ratio of 7:4:1.5, placing them in an ultrasonic cleaning machine at 200W and 30KHz for cleaning for 4 minutes, draining Drying, crushing, adding water with 1 times the amount of the crushed material, ultrasonic extraction at room temperature 300W, 40KHz for 12min, and then performing high-voltage pulse electric field treatment for 12min under the conditions of electric field strength 30kV / cm, pulse time 500μs, and pulse frequency 300Hz; adjust the pH value 8. Add biological enzyme with 0.2% mass of the mixture, and enzymatically hydrolyze at 55°C for 12 minutes; the enzymolyzed solution is concentrated under reduced pressure to a solid content of 50%, and placed in a microwave dryer at 2000W and 140°C for ...

Embodiment 2

[0080] A polypropylene composite material with strong dimensional stability is mainly prepared from the following raw materials in parts by weight:

[0081] 160 parts of polypropylene, 15 parts of calcium fruit fiber, 9 parts of modified nano-carbon, 9 parts of polyethylene / winter rye peptide complex, 9 parts of ultraviolet absorber, 7 parts of ethylene-methyl acrylate copolymer, 7 parts of anti-aging agent part, 3 parts of tributyl citrate, 1.7 parts of coupling agent, 0.8 part of nucleating agent, 0.4 part of composite antioxidant, 0.2 part of bitter almond oil;

[0082] The ultraviolet absorber is UV-531.

[0083] The ethylene-methyl acrylate copolymer is DuPont EMA1125AC of the United States.

[0084] The nucleating agent is di(3,4-dimethyl)benzylsorbitol.

[0085] The composite antioxidant is uniformly mixed with antioxidant 1010, antioxidant 168 and biological antioxidant at a mass ratio of 1.5:2:3.

[0086] The preparation method comprises the following steps: first,...

Embodiment 3

[0088] A polypropylene composite material with strong dimensional stability is mainly prepared from the following raw materials in parts by weight:

[0089] 120 parts of polypropylene, 12 parts of calcium fruit fiber, 8 parts of modified nano-carbon, 8 parts of polyethylene / winter rye peptide complex, 8 parts of ultraviolet absorber, 6 parts of ethylene-methyl acrylate copolymer, 6 parts of anti-aging agent part, 2 parts of tributyl citrate, 1.5 parts of coupling agent, 0.6 part of nucleating agent, 0.3 part of composite antioxidant, 0.1 part of bitter almond oil;

[0090] The ultraviolet absorber is UV-531.

[0091] The ethylene-methyl acrylate copolymer is DuPont EMA1125AC of the United States.

[0092] The nucleating agent is di(3,4-dimethyl)benzylsorbitol.

[0093] The composite antioxidant is uniformly mixed with antioxidant 1010, antioxidant 168 and biological antioxidant at a mass ratio of 1:1:2.

[0094] The preparation method comprises the following steps: first, a...

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Abstract

The invention discloses polypropylene composite with good dimensional stability and belongs to the technical field of polypropylene materials. Polypropylene is used as a base material; the types and formulas for the raw materials of the composite are optimized; a production technique is improved; scientific formulating is performed on: Prunus humilis that helps significantly improve impact resistance of the polypropylene composite, provides good biodegradability and reduces production cost; modified nano carbon that may significantly improve high temperature resistance, shrinking resistance, relative tension load, strength, toughness and elastic modulus in the polypropylene composite; polyethylene / winter rye peptide composite that may greatly improve low temperature resistance of the polypropylene composite; bitter almond oil and a composite antioxidant which may effectively improve lubricating performance of the polypropylene composite and oxidation resistance thereof. The above materials cooperate with other processing aids to finally produce the polypropylene composite that has good physical properties and good dimensional stability.

Description

technical field [0001] The invention relates to a polypropylene material, in particular to a polypropylene composite material with strong dimensional stability and a preparation method thereof. Background technique [0002] Polypropylene is a general-purpose plastic with good comprehensive properties, and its total output has surpassed polyvinyl chloride to become the second largest general-purpose plastic after polyethylene. Main features: non-toxic, odorless, low density, strength, stiffness, hardness and heat resistance are superior to low-pressure polyethylene, high bending fatigue resistance, can be used at about 100 degrees. It has good electrical properties and high frequency Insulation is not affected by humidity, but becomes brittle at low temperature, not wear-resistant, and easy to age. Because of its notch sensitivity, low heat distortion temperature, large molding shrinkage, poor hardness and wear resistance, its application in product packaging, automobiles, h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L97/02C08L23/06C08L89/00C08L23/08C08L91/00C08K13/06C08K9/02C08K7/24C08K7/06C08K5/134C08K5/526C12N1/18C12P21/02C12P21/06C11B1/00C11B1/04C12R1/865
CPCC08L23/12C07K5/0215C08K2201/011C08L2201/06C08L2201/08C08L2205/035C08L2205/16C08L2205/24C11B1/00C11B1/04C12N1/18C12P21/02C12P21/06C08L97/02C08L23/06C08L89/00C08L23/0869C08L91/00C08K13/06C08K9/02C08K7/24C08K7/06C08K5/1345C08K5/526
Inventor 田岗李继
Owner NINGXIA YANCHI WEST CHANGXIANG AGRI BIOTECH
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