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Modified polyurethane resin and preparation method thereof as well as modified polyurethane artificial leather and application

A polyurethane resin and polyurethane technology, applied in the field of polyurethane resin, can solve the problems of limited reaction conditions, insignificant improvement of mechanical properties, complicated operation, etc., and achieve the effects of reducing expansion, simple and easy preparation method, and increasing dispersion

Inactive Publication Date: 2018-11-20
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The addition of cellulose and modified cellulose can specifically improve some properties of polyurethane resin (as a leveling agent, brightener), but the improvement of the comprehensive performance of polyurethane resin, especially the improvement of mechanical properties is not significant. Moreover, the addition of cellulose and modified cellulose is added during the reaction of polyurethane resin, which has certain restrictions on the reaction conditions and complicated operation.

Method used

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  • Modified polyurethane resin and preparation method thereof as well as modified polyurethane artificial leather and application
  • Modified polyurethane resin and preparation method thereof as well as modified polyurethane artificial leather and application
  • Modified polyurethane resin and preparation method thereof as well as modified polyurethane artificial leather and application

Examples

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Embodiment 1

[0059] A modified polyurethane resin, in which 10wt% micronano lignocellulose and 1wt% graphene material are dispersed, and the mass ratio of graphene material to micronano lignocellulose is 0.1:1.

[0060] Wherein, the micro-nano lignocellulose includes 20wt% lignin, the length of the micro-nano lignocellulose is 2 μm, and the diameter is 100 nm; the graphene material is prepared by a mechanical exfoliation method, and the average sheet thickness is 6 nm.

[0061] Its preparation method is as follows:

[0062] (1) adding the cellulose raw material containing 20wt% lignin into acetone and heating under reflux for 20min to obtain a raw material dispersion with a concentration of 10wt%;

[0063] (2) Add graphene material in the raw material dispersion, then peel off and grind through sand milling to obtain the first pretreatment product;

[0064] (3) adding polyurethane resin accounting for 2wt% of the total mass of the polyurethane resin to the first pretreatment product, and ...

Embodiment 2-8

[0068] The only difference with Example 1 is that in the modified polyurethane resin provided by this embodiment, the mass percentage of graphene material is 0.1% (the mass ratio of graphene material and micronano lignocellulose is 0.01:1 , embodiment 2), 10% (the mass ratio of graphene material and micronano lignocellulose is 1:1,

Embodiment 3

[0069] Embodiment 3), 12% (the mass ratio of graphene material and micro-nano lignocellulose is 1.2:1, embodiment 4), in the modified polyurethane resin that present embodiment provides, do not comprise graphene material (implementation Example 5).

[0070] The only difference from Example 1 is that, while keeping the mass ratio of the graphene material and the micronano lignocellulose at 0.1:1, the modified polyurethane resin provided by this example includes a mass percentage of 0.1% micronano lignocellulose (embodiment 6), 20% micronano lignocellulose (embodiment 7), 24% micronano lignocellulose (embodiment 8).

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Abstract

The invention provides a modified polyurethane resin, a preparation method of the modified polyurethane resin as well as modified polyurethane artificial leather and application. Micro-nano lignocellulose is dispersed in the modified polyurethane resin. The micro-nano lignocellulose is added into the polyurethane resin, so that the mechanical property, corrosion resistance, heat stability and aging resistance of the polyurethane resin can be increased, the tensile strength, tear resistance and other mechanical properties of the polyurethane resin are enhanced, and the expansibility of the polyurethane resin is reduced. When the modified polyurethane resin is used for preparing the polyurethane artificial leather, the polyurethane artificial leather can maintain excellent strength while ensuring handfeel of the artificial leather, and has the properties such as wear resistance, elasticity, gas permeability, scratch resistance, antibacterial mildew resistance, aging resistance, antistatic property and the like.

Description

technical field [0001] The invention belongs to the field of polyurethane resin, and relates to a modified polyurethane resin, a preparation method thereof, a modified polyurethane artificial leather and its application. Background technique [0002] Polyurethane material is a material that has developed very well in recent years. Due to the excellent elasticity of polyurethane resin, polyurethane material has far better toughness than phenolic and epoxy resin substrates, and can be widely used, such as preparing polyurethane artificial leather; polyurethane artificial leather The product has excellent performance, coupled with the rapid development of microfiber leather, it is currently widely used in clothing, shoes, bags, furniture, automobiles and other fields, and has become an indispensable consumer product. With the improvement of people's consumption level, the requirements for items are getting higher and higher. The requirements for polyurethane artificial leather ...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L97/00C08K3/04C08J5/18B32B37/10B32B38/16
CPCB32B37/10B32B38/164C08J5/18C08J2375/04C08J2497/00C08K2201/003C08K2201/011C08L75/04C08L97/00C08K3/042
Inventor 任方华唐地源张金柱张安刘顶梁蒙蒙
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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