Plant oil-based polyurethane composite material and preparation method thereof

A technology of vegetable oil-based and composite materials, which is applied in the field of vegetable oil-based polyurethane composite materials and its preparation, can solve the problems of poor mechanical properties, thermal properties and weather resistance of polyurethane, and achieve the effects of excellent mechanical properties, lower production costs, and improved dispersibility.

Inactive Publication Date: 2015-03-25
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] A large number of research results show that the performance of traditional vegetable oil-based polyurethane depends on the hydroxyl value of polyols, the chain length and structure of vegetable oil, and due to the lack of vegetable oil structure itself (easy to hydrolyze), this type of polyurethane has poor mechanical properties, thermal properties and weather resistance

Method used

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  • Plant oil-based polyurethane composite material and preparation method thereof

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preparation example Construction

[0023] A method for synthesizing an environmentally friendly polyurethane composite material with excellent mechanical properties and thermal stability. The vegetable oil-based polyurethane composite material comprises the following components:

[0024] (a) Vegetable oil-based polyols;

[0025] (b) Organotin catalysts, used in an amount of 1% to 10% of the mass of vegetable oil-based polyols;

[0026] (c) Polyisocyanate, the dosage is 0.8 to 1.0 times the mass of vegetable oil-based polyol;

[0027] (d) Short-chain chain extender, the dosage is according to the chain extension ratio n OH : n NCO =1︰1~1︰1.5 added, that is to control the molar ratio of hydroxyl group and isocyanate in the material to 1︰1~1︰1.5;

[0028] (f) The nano-reinforcement material is fluorine-containing polysilsesquioxane (POSS), calculated by weight percentage, which is 0.1% to 1.2% of the total mass of the component;

[0029] Specifically, the above-mentioned vegetable oil-based polyol is used a...

Embodiment 1

[0043] A vegetable oil-based polyurethane composite material, comprising the following components:

[0044] Soybean oil-based polyol (hydroxyl value: 155mg KOH / g) 2 g;

[0045] Stannous octoate: 0.20 g, 10% of the mass of vegetable oil-based polyol;

[0046] Isophorone diisocyanate (IPDI) 1.90g, 0.95 times the mass of vegetable oil polyol;

[0047] 1,4-butanediol 0.30 g, chain extension ratio n OH : n NCO =1︰1.27;

[0048] Fluorinated polysilsesquioxane (POSS) 0.0060 g, 0.14% by weight;

[0049] Solvent tetrahydrofuran 10 mL, solid content 33%;

[0050] The preparation method of this polyurethane composite material is as follows:

[0051] 1. According to the formula, weigh each component, including vegetable oil-based polyol, organotin catalyst, solvent, nano-enhanced material fluorine-containing polysilsesquioxane (POSS) and polyisocyanate, N 2 React at 80°C for 2 h under protection to synthesize polyurethane prepolymer;

[0052] 2. Add the required mass of chain e...

Embodiment 2

[0054] A vegetable oil-based polyurethane composite material, comprising the following components:

[0055] Soybean oil-based polyol (hydroxyl value: 155mg KOH / g) 2 g;

[0056] Stannous octoate 0.20 g, 10% of the mass of vegetable oil-based polyol;

[0057] Isophorone diisocyanate (IPDI) 1.90g, 0.95 times the mass of vegetable oil polyol;

[0058] 1,4-butanediol 0.30 g, chain extension ratio n OH : n NCO =1︰1.27;

[0059] Fluorinated polysilsesquioxane (POSS) 0.0240 g, 0.54% by weight;

[0060] Solvent tetrahydrofuran 10 mL, solid content 33%;

[0061] The preparation method of the polyurethane composite material is as described in Example 1, and will not be repeated here to save space.

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Abstract

The invention discloses a plant oil-based polyurethane composite material and a preparation method thereof and belongs to the technical field of high polymer materials. The synthesized composite material comprises the following components: plant oil-based polyhydric alcohols, an organic tin catalyst, polyisocyanates and a short chain extender, wherein the modified nano reinforced material is polysilsesquioxane. According to the polyurethane composite material disclosed by the invention, the reproducible epoxidized plant oil serves as an initial raw material, and a modification effect is achieved by physically dispersing the polysilsesquioxane in a polyurethane matrix. The plant oil-based polyurethane composite material has the advantages that the initial raw material is green and environment-friendly, and multiple problems such as energy crisis and environmental pollution can be relieved; physical modification is performed by adopting the polysilsesquioxane with a regular structure, and the method is easy and convenient to implement; and moreover, the modified material has the advantages of high mechanical strength and high heat stability, and the application range of the materials can be further widened.

Description

technical field [0001] The invention relates to a vegetable oil-based polyurethane composite material and a preparation method thereof, and belongs to the technical field of preparing new polymer materials using renewable vegetable oil as a raw material. Background technique [0002] Due to its versatility, polyurethane is widely used in coatings, adhesives, elastomers, sealing materials and other fields. However, the synthesis of traditional polyurethane is entirely based on petrochemical products as raw materials. In the production process, it will inevitably be affected by the threat of oil resource depletion and the fluctuation of crude oil, which will bring many serious problems such as environmental pollution and greenhouse effect. In contrast, vegetable oil belongs to natural oil, and its characteristics such as cheap and easy to get, environmental protection and renewable strong make it receive more and more attention, especially the development of epoxidation te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/36C08G18/32C08G18/24C08K5/549
CPCC08G18/10C08G18/244C08G18/3206C08G18/36C08G18/755C08K5/549C08K2201/011C08L2201/08
Inventor 蒋平平盛英佩黄杰
Owner JIANGNAN UNIV
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