Method for toughening thermosetting resin by using collagen fibers and modified thermosetting resin

A fiber toughening and skin collagen technology is applied in the field of modified thermosetting resins and biomass material toughening modified thermosetting resins. , the effect of broad application prospects

Active Publication Date: 2020-05-19
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The first object of the present invention is to provide a method for toughening thermosetting resins with skin collagen fibers, so as to solve the technical problem that existing in the prior art cannot take into account both the toughening of thermosetting resins and the improvement of modulus

Method used

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  • Method for toughening thermosetting resin by using collagen fibers and modified thermosetting resin
  • Method for toughening thermosetting resin by using collagen fibers and modified thermosetting resin
  • Method for toughening thermosetting resin by using collagen fibers and modified thermosetting resin

Examples

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Embodiment 1

[0065] This embodiment provides a method for toughening a thermosetting resin with skin collagen fibers, comprising the following steps:

[0066] (1) Mix 100 parts by weight of waste leather shavings with 400 parts by weight of water and 0.5 parts by weight of FG-B at 25°C for 2 hours, then mix with 400 parts by weight of water at 25°C for 2 hours after filtering, and mix with 400 parts by weight of Water was mixed at 25°C for another 2 hours and then filtered;

[0067] (2) fully drying the waste leather shavings after washing in step (1) at 80° C., and then pulverizing them to 120 mesh to obtain collagen fiber powder with a disentanglement rate of about 24%;

[0068] (3) 126 parts by weight of melamine powder and 158 parts by weight of a formaldehyde solution with a concentration of 38% and a pH of 10.5 were mixed at 85° C. for 3 hours to obtain a melamine-formaldehyde resin prepolymer solution;

[0069] (4) Mix 5 parts by weight of the collagen fiber powder obtained in step...

Embodiment 2

[0072] This example refers to the preparation method of Example 1, and the only difference is that the raw material of the collagen fibers used is wet white leather, and the disintegration rate of the obtained collagen fibers is about 17.8%.

Embodiment 3

[0074] This embodiment provides a method for toughening a thermosetting resin with skin collagen fibers, comprising the following steps:

[0075] (1) Mix 100 parts by weight of waste leather shavings with 400 parts by weight of water and 0.5 parts by weight of FG-B at 25°C for 2 hours, then mix with 400 parts by weight of water at 25°C for 2 hours after filtering, and mix with 400 parts by weight of Water was mixed at 25°C for another 2 hours and then filtered;

[0076] (2) fully drying the waste leather shavings after washing in step (1) at 80° C., and then pulverizing them to 120 mesh to obtain collagen fiber powder with a disentanglement rate of about 24%;

[0077] (3) The collagen fiber powder obtained in step (2) is activated twice at 2400rpm in a 36-tooth staggered knife centrifugal mechanochemical reactor with a sieve aperture of 0.12mm and trapezoidal holes to obtain the activated collagen fiber powder. The defibration rate is about 70%, and the water absorption rate ...

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Abstract

The invention relates to the technical field of biomass material toughening modified thermosetting resin, in particular to a method for toughening thermosetting resin by collagen fibers and modified thermosetting resin. The method for toughening the thermosetting resin by using the collagen fibers comprises the following steps: uniformly mixing a thermosetting resin prepolymer with the skin collagen fibers, and carrying out curing reaction. The collagen fibers are used for toughening and modifying the thermosetting resin, so that the toughening effect is achieved, and meanwhile, the modulus ofthe thermosetting resin can be improved. Moreover, as a renewable natural fiber, the collagen fiber is wide in source and low in price, and compared with an existing toughening method, the cost of the collagen fiber is lower.

Description

technical field [0001] The invention relates to the technical field of toughening and modifying thermosetting resins of biomass materials, in particular to a method for toughening thermosetting resins with skin collagen fibers and the modified thermosetting resins. Background technique [0002] Thermosetting resin is a kind of polymer material with a three-dimensional cross-network structure, which has significant advantages such as high hardness, corrosion resistance, high bonding strength, flame retardancy, and good thermal stability. It is widely used in machinery, electrical appliances, aviation, adhesives, coatings and other fields. However, thermosetting resins also have some inherent defects, among which poor toughness and high brittleness have restricted the application of thermosetting resins in many fields. In recent decades, a large number of scholars have been engaged in the toughening modification of thermosetting resins, and there are generally five methods us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/28C08L61/10C08L89/00
CPCC08L61/06C08L61/28C08L2205/16C08L89/00
Inventor 许维星石碧周建飞吴新涛
Owner SICHUAN UNIV
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