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Preparation method for oxidized graphene/water-soluble polyurethane composite material

A technology of water-soluble polyurethane and composite materials, applied in chemical instruments and methods, fibrous fillers, inorganic pigment treatment, etc., can solve problems such as low strength and poor performance, and achieve good strength of finished products, novel design and controllability strong effect

Active Publication Date: 2015-07-08
青岛华高烯暖新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the water-based polyurethane resin has gradually replaced the solvent-based and has become an important direction for the development of the polyurethane industry. Water-based polyurethane refers to a new type of polyurethane system that uses water instead of organic solvents as the dispersion medium, also known as water-dispersed polyurethane, water-based polyurethane or water-based polyurethane. , can be widely used in coatings, adhesives, fabric coating and finishing agents, leather finishing agents, paper surface treatment agents and fiber surface treatment agents; compared with solvent-based polyurethane, it has low application cost, non-toxic, non-polluting, safe Reliable, good compatibility, easy to modify and other advantages, and there is a tendency to gradually replace solvent-based polyurethane; but water-based polyurethane materials also have inherent shortcomings, such as low strength, poor heat resistance, water resistance, antistatic performance, etc., so limit its further application

Method used

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  • Preparation method for oxidized graphene/water-soluble polyurethane composite material
  • Preparation method for oxidized graphene/water-soluble polyurethane composite material
  • Preparation method for oxidized graphene/water-soluble polyurethane composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The concrete steps of the preparation method of the graphene oxide / water-soluble polyurethane composite material involved in this implementation are:

[0015] (1) Graphite powder pretreatment process: get 55ml mass fraction and be the concentrated sulfuric acid of 98%, 8g potassium persulfate and 8g phosphorus pentoxide mix uniformly and be heated to 80 ℃ until completely dissolving to form mixed solution, get 16g graphite powder in 400 Add to the mixture at a stirring speed of ~500r / min, and continue to stir at 20-25°C for 6 hours to oxidize the above mixture. After the oxidation is completed, dilute the mixture with 500ml of distilled water and wash it with suction to neutrality (PH=7 ), then vacuum-dried at 35 to 45°C for 4 hours to obtain graphite powder;

[0016] (2) Oxidation treatment process: Take 16g of graphite powder prepared in step (1) and 450ml of concentrated sulfuric acid with a mass fraction of 98% and a temperature of 0°C and mix them in an ice bath at...

Embodiment 2

[0021] In this embodiment, according to the preparation method described in Example 1, in step (4), add 7.5g, 15g, 22.5g and 30g of graphene oxide aqueous phase dispersion prepared in step (3) to 100g water-soluble polyurethane respectively solution to prepare graphene oxide / water-soluble polyurethane composite samples with a solid content of 0.25%, 0.5%, 0.75% and 1%, and then cut the prepared samples for strength tensile testing on a tensile tester. stretch test.

Embodiment 3

[0023] In the present embodiment, the water-soluble polyurethane composite material whose mass fraction of graphene oxide after drying is 0% is taken as a comparative example, and the quality of graphene oxide after drying respectively prepared in Example 2 is tested with a universal tester in the prior art. The graphene oxide / water-soluble polyurethane composite material samples with fractions of 0.25%, 0.5%, 0.75% and 1% were subjected to tensile strength test and elongation test. During the test, each group of samples was made into a width of 4mm and a thickness of 1.5mm. -2mm film, the specific data are shown in Tables 1 and 2:

[0024]

[0025]

[0026] Table 1

[0027]

[0028] Table 2

[0029]Above-mentioned experimental data shows, the graphene oxide / water-soluble polyurethane composite material prepared by the preparation method of the graphene oxide / water-soluble polyurethane composite material researched and designed by the present invention has good tensi...

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Abstract

The invention belongs to the technical field of composite material preparation and relates to a preparation method for an oxidized graphene / water-soluble polyurethane composite material. The preparation method for the oxidized graphene / water-soluble polyurethane composite material particularly comprises a graphite powder pre-treatment process, an oxidation treatment process, a post-treatment process and a moulding and measuring process. The preparation method for the oxidized graphene / water-soluble polyurethane composite material uses a physical blending method to perform the preparation of the oxidized graphene / water-soluble polyurethane composite material, the processes are simple, the cost is low, the controllability is strong, the preparation method for the oxidized graphene / water-soluble polyurethane composite material is suitable for large-scale industrial production, the prepared oxidized graphene / water-soluble polyurethane composite material is good in tensile strength and stretching strength, nanocomposite prepared by the preparation method for the oxidized graphene / water-soluble polyurethane composite material can be applied to the fields of engineering materials and special fiber, and a good application prospect is achieved; the preparation method for the oxidized graphene / water-soluble polyurethane composite material is novel in design, scientific in theory, simple in processes, simple in operation, high in preparation efficiency and good in finished product strength.

Description

Technical field: [0001] The invention belongs to the technical field of composite material preparation, and relates to a method for preparing a graphene oxide / water-soluble polyurethane composite material. The prepared graphene oxide / water-soluble polyurethane composite material has good tensile strength and constant elongation strength. Background technique: [0002] At present, the water-based polyurethane resin has gradually replaced the solvent-based and has become an important direction for the development of the polyurethane industry. Water-based polyurethane refers to a new type of polyurethane system that uses water instead of organic solvents as the dispersion medium, also known as water-dispersed polyurethane, water-based polyurethane or water-based polyurethane. , can be widely used in coatings, adhesives, fabric coating and finishing agents, leather finishing agents, paper surface treatment agents and fiber surface treatment agents; compared with solvent-based pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K9/02C08K3/04C09C1/46C09C3/06
Inventor 潘东晓刘敬权王福山吴春艳古晨
Owner 青岛华高烯暖新材料科技有限公司
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