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Preparation method of basalt particle reinforced polyurethane hot melt adhesive

A technology of polyurethane hot melt adhesive and basalt particles, which is applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc. problems, to achieve the effect of improving chemical stability, uniform dispersion, and enhancing mechanical properties

Inactive Publication Date: 2019-03-15
金丽丹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of science and technology, more and more new materials appear, making it difficult for any single type of adhesive to meet the requirements, especially in some industries that require adhesives to have high enough heat resistance
One of the disadvantages of polyurethane hot melt adhesives is poor heat resistance. The bonding strength decreases significantly when the temperature is higher. If the temperature is higher, it is easy to decompose. How to improve the heat resistance and flame retardancy of polyurethane hot melt adhesives will be a important research directions

Method used

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  • Preparation method of basalt particle reinforced polyurethane hot melt adhesive
  • Preparation method of basalt particle reinforced polyurethane hot melt adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A preparation method of basalt particle reinforced polyurethane hot melt adhesive, comprising the following steps:

[0017] S1. Put 2500-mesh basalt particles into the planetary ball mill, mix according to the ball-to-material ratio of 4:1, and perform ball milling at a speed of 300r / min, and the effective ball milling time is controlled to 15h;

[0018] S2. Mix the basalt particles after the ball milling in step S1 with the ground microcrystalline cellulose, the mass ratio is 1:1, then add deionized water and stir evenly with magnetic force, then add the catalyst that accounts for 0.5% of the mass of the mixture. Sulfuric acid hexahydrate Ferric ammonium, continue to stir for 10 minutes, and finally react in a hydrothermal reactor at a temperature of 200 ° C for 16 hours, take it out, wash and dry to obtain a basalt / carbon composite material;

[0019] S3. Add an equal volume of stearic acid hot ethanol solution drop by drop while stirring the basalt / carbon composite ma...

Embodiment 2

[0023] A preparation method of basalt particle reinforced polyurethane hot melt adhesive, comprising the following steps:

[0024] S1. Put 4000-mesh basalt particles into the planetary ball mill, mix according to the ball-to-material ratio of 2:1, and perform ball milling at a speed of 500r / min, and the effective ball milling time is controlled to 20h;

[0025] S2. Mix the basalt particles after the ball milling in step S1 with the ground microcrystalline cellulose, the mass ratio is 1:2, then add deionized water and stir evenly with magnetic force, then add the catalyst that accounts for 2% of the mass of the mixture. Sulfuric acid hexahydrate Ferric ammonium, continue to stir for 30 minutes, and finally react in a hydrothermal reactor at a temperature of 250 ° C for 24 hours, take it out, wash and dry to obtain a basalt / carbon composite material;

[0026] S3. Add an equal volume of stearic acid hot ethanol solution drop by drop while stirring the basalt / carbon composite mate...

Embodiment 3

[0030] A preparation method of basalt particle reinforced polyurethane hot melt adhesive, comprising the following steps:

[0031] S1. Put 3000-mesh basalt particles into the planetary ball mill, mix according to the ball-to-material ratio of 2:1, perform ball milling at a speed of 350r / min, and control the effective ball milling time to 20h;

[0032] S2. Mix the basalt particles after the ball milling in step S1 with the ground microcrystalline cellulose, the mass ratio is 1:1, then add deionized water and stir evenly with magnetic force, then add the catalyst that accounts for 1% of the mass of the mixture. Sulfuric acid hexahydrate Ferric ammonium, continue to stir for 20 minutes, and finally react in a hydrothermal reactor at a temperature of 200 ° C for 16 hours, take it out, wash and dry to obtain a basalt / carbon composite material;

[0033] S3. Add an equal volume of stearic acid hot ethanol solution drop by drop while stirring the basalt / carbon composite material, the ...

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Abstract

The invention provides a preparation method of a basalt particle reinforced polyurethane hot melt adhesive. The preparation method comprises the following steps: S1, basalt particles are ball-milled and activated; S2, a basalt / carbon composite is prepared; S3, a stearic acid modified basalt / carbon composite is prepared; S4, a polyurethane prepolymer is prepared; and S5, the polyurethane prepolymerprepared in the step S4, EVA, rosin pentaerythrityl ester, carboxylated oxidized polyethlene wax, the stearic acid modified basalt / carbon composite and an antioxidant 1010 are stirred, warming is carried out for deaeration, vacuum deaeration is carried out, then stirring is stopped, vacuum is removed, and finally products are poured into aluminium foil bags for seal preservation. The hot melt adhesive prepared with the preparation method provided by the invention meets mechanical properties and meanwhile is improved in heat resistant performance.

Description

technical field [0001] The invention relates to the field of hot-melt adhesives, in particular to a preparation method of basalt particle-reinforced polyurethane hot-melt adhesives. Background technique [0002] Thermoplastic polyurethane elastomer refers to a polymer synthetic material that shows rubber elasticity at low temperature and can be plasticized when the temperature is raised. It has high strength, high elasticity, high wear resistance, excellent low temperature brittleness, and hardness can be in Mechanical properties such as adjustable in a wide range. Polyurethane hot melt adhesives react linear or slightly branched polymer diols, chain extenders and isocyanates to form chain polymer carbamates, and add some other additives to form polyurethanes. Hot melt adhesive. When in use, heat to a certain temperature to melt and coat the surface of the substrate, and then solidify after cooling. The solidification process mainly uses the hydrogen bond in the compositio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J123/08C09J193/04C09J123/26C09J11/04
CPCC09J11/04C09J175/04C08L23/0815C08L93/04C08L23/26C08K9/04C08K9/02C08K3/34C08K5/1345
Inventor 金丽丹
Owner 金丽丹
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