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Hyperbranched polyamidoamine modified plant fiber reinforced polypropylene micro foaming material and preparation method thereof

A plant fiber and polyamidoamine technology, which is applied in the field of hyperbranched polyamidoamine modified plant fiber reinforced polypropylene micro-foaming materials and its preparation, can solve the problems of difficult dispersion, poor compatibility of non-polar polymers, and influence on fiber Comprehensive properties of composite materials and other issues, to achieve the effect of uniform and fine cells, improve compatibility, and fine cells

Inactive Publication Date: 2018-06-22
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are a large number of hydroxyl groups with strong hydrophilicity in natural plant fibers, which have poor compatibility with non-polar polymers, are not easy to disperse in the matrix, and are easy to agglomerate in the matrix of composite materials, which affects the comprehensive performance of fiber composites.

Method used

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  • Hyperbranched polyamidoamine modified plant fiber reinforced polypropylene micro foaming material and preparation method thereof
  • Hyperbranched polyamidoamine modified plant fiber reinforced polypropylene micro foaming material and preparation method thereof
  • Hyperbranched polyamidoamine modified plant fiber reinforced polypropylene micro foaming material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In this embodiment, the polypropylene composite material is composed of the following raw materials in parts by weight:

[0034]

[0035]

[0036] The hyperbranched polyamidoamine modified plant fiber reinforced polypropylene micro-foaming composite material is composed of 98wt% polypropylene composite material and 2wt% chemical foaming agent.

[0037] Concrete preparation method comprises the following steps:

[0038] (1) Weigh 96 parts of jute fiber and add it to the ethanol aqueous solution with a volume ratio of 90:10, soak at room temperature for 30 minutes, slowly add 4 parts of γ-glycidyl etheroxypropyl trimethoxysilane, heat up to 50-60°C and stir at a constant temperature 24-48h, washed 5 times with dehydrated ethanol, and vacuum-dried the product at 80°C for 24-48h to obtain modified jute fiber;

[0039] (2) Soak the modified jute fiber prepared in step (1) in ethanol for 30min, slowly add 3 parts of hyperbranched polyamidoamine, heat up to 70°C and sti...

Embodiment 2

[0043] In this embodiment, the polypropylene composite material is composed of the following raw materials in parts by weight:

[0044]

[0045]

[0046] The hyperbranched polyamidoamine modified plant fiber reinforced polypropylene micro-foaming composite material is composed of 97wt% polypropylene composite material and 3wt% chemical foaming agent.

[0047] Concrete preparation method comprises the following steps:

[0048] (1) Weigh 93 parts of ramie fiber and add it to ethanol water solution with a volume ratio of 90:10, soak at room temperature for 20 minutes, slowly add 7 parts of γ-glycidyl etheroxypropylmethyldiethoxysilane, heat up to 55°C and stir at constant temperature 36h, washed 4 times with dehydrated ethanol, and vacuum-dried the product at 60°C for 24h-48h to obtain modified ramie fibers;

[0049] (2) Soak the modified ramie fiber prepared in step (1) in ethanol for 20 minutes, slowly add 5 parts of hyperbranched polyamidoamine, heat up to 65°C and stir...

Embodiment 3

[0053] In this embodiment, the polypropylene composite material is composed of the following raw materials in parts by weight:

[0054]

[0055]

[0056] The hyperbranched polyamidoamine modified plant fiber reinforced polypropylene micro-foaming composite material is composed of 98wt% polypropylene composite material and 2wt% chemical foaming agent.

[0057] Concrete preparation method comprises the following steps:

[0058] (1) Weigh 90 parts of flax fiber and add it to an ethanol aqueous solution with a volume ratio of 90:10, soak at room temperature for 10 minutes, slowly add 10 parts of γ-glycidyloxypropyltrimethoxysilane, heat up to 50°C and stir at a constant temperature for 24 hours, Washing with dehydrated ethanol for 3 times, vacuum-drying the product at 50°C for 24 hours, finally obtaining modified flax fiber;

[0059] (2) Soak the modified jute fiber prepared in step (1) in ethanol for 10 minutes, slowly add 10 parts of hyperbranched polyamidoamine, heat up ...

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Abstract

The invention discloses a hyperbranched polyamidoamine modified plant fiber reinforced polypropylene micro foaming composite material and a preparation method thereof. The hyperbranched polyamidoaminemodified plant fiber reinforced polypropylene micro foaming composite material consists of 97-98 wt% of polypropylene composite material and 2-3 wt% of chemical foaming agent, wherein the polypropylene composite material consists of polypropylene, hyperbranched polyamidoamine plant fiber, PP-g-GMA, antioxidant, lubricant and other additives. The hyperbranched polyamidoamine modified plant fiber reinforced polypropylene micro foaming composite material has the characteristics of low density, high strength, high rigidity, fine cell pores, uniform distribution, etc., can meet application requirements of automobile parts, adapts to development concepts of energy saving and environmental friendliness, and is in line with the development trend of automotive lightweight, therefore, the materialhas a broad development prospect in the field of automobiles.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a hyperbranched polyamidoamine modified plant fiber reinforced polypropylene micro-foaming material and a preparation method thereof. Background technique [0002] Under the dual pressure of resource crisis and pollution prevention and control, the selection of energy-saving, comfortable, safe and lightweight materials has become the development trend of the automobile industry. The use of lightweight and high-performance alternative materials can minimize the weight of the car itself, improve The comfort and handling of the car can also reduce energy consumption, which is in line with the concept of energy saving and environmental protection. The polypropylene micro-foaming material has a uniform closed micro-cell structure inside, and has the characteristics of low density, high specific strength, good sound insulation performance, good heat insulation perfo...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08J9/08C08J5/06C08B15/06
CPCB29C44/02B29C44/60B29C45/76B29C45/78B29C2945/76531B29C2945/76605C08B15/06C08J5/06C08J9/08C08J2203/02C08J2323/12C08J2423/14C08J2451/06
Inventor 石阳阳周海李飞夏洋李荣群
Owner ORINKO NEW MATERIAL CO LTD
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