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Epoxidized soybean oil modified collagen fiber as well as preparation method and application thereof

A technology of epoxidized soybean oil and collagen fibers, which is applied in the direction of repelling fibers to liquids, fiber processing, animal fibers, etc., can solve the problems of weak interlayer performance, migration and high cost of reinforced polymers

Active Publication Date: 2022-02-25
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The in-plane and interlayer properties of zero-dimensional and one-dimensional reinforced polymer reinforced polymers are weak, and there is a risk of migration
The interlayer performance of two-dimensional reinforced polymer reinforced polymer is relatively weak, and interlayer delamination is prone to occur in the actual use process, which affects the modification effect of the material
Similar to this, for composite materials with added collagen fibers, Chinese patent CN110258111A discloses a method for modifying collagen fibers with a fluorine-containing silane coupling agent, which improves the compatibility between collagen fibers and rubber, thereby The rubber composite material has excellent mechanical properties and self-cleaning properties, but this silane coupling agent has the disadvantages of high cost and its own preparation process is not environmentally friendly

Method used

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  • Epoxidized soybean oil modified collagen fiber as well as preparation method and application thereof
  • Epoxidized soybean oil modified collagen fiber as well as preparation method and application thereof
  • Epoxidized soybean oil modified collagen fiber as well as preparation method and application thereof

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preparation example Construction

[0032] The first embodiment of the present invention provides a preparation method of epoxidized soybean oil modified collagen fibers, comprising the following steps:

[0033] The pretreated collagen fibers were subjected to a ring-opening grafting reaction at 80-140 °C for 4-12 h with a solution containing epoxidized soybean oil and a catalyst.

[0034] Activated pretreated collagen fibers will expose more -NH 2 , -OH, -COOH and other groups, part of the epoxy groups on the flexible long chain of epoxy soybean oil molecules ( ) can be ring-opened at 80-140 °C in the presence of a catalyst, and with -NH on the side chain of collagen fibers 2 , -OH, -COOH and other groups react to form , , The grafted structure effectively covers the surface of collagen fibers, reduces the surface free energy of collagen fibers, and realizes the hydrophobic modification of collagen fibers.

[0035] It should be noted that epoxidized soybean oil can also modify plant fibers, but compared...

Embodiment 1

[0078] The present embodiment provides a kind of preparation method of epoxidized soybean oil modified collagen fiber, comprises the following steps:

[0079] (1) Add the waste leather shavings after washing to deionized water, adjust the pH to 8 with sodium bicarbonate powder, filter after washing and dehydrate with ethanol. Grinding with a pulverizer, passing through a 40-mesh sieve to obtain collagen fibers;

[0080] (2) Take 10 parts by weight of collagen fibers obtained in step (1) after pulverization, and add in 100 parts by weight of isopropanol solvent containing 10 parts by weight of epoxy soybean oil and 4 parts by weight of catalyst tetrabutylammonium bromide in advance, Stir at 90 ° C for 6 h; filter and discharge the material and place it in an oven at 80 ° C for 12 h; because isopropanol and epoxidized soybean oil form an azeotrope, the boiling point increases, so under the experimental conditions, the stirring temperature can be higher than The boiling point of...

Embodiment 2

[0084] The present embodiment provides a kind of preparation method of epoxidized soybean oil modified collagen fiber, comprises the following steps:

[0085] (1) Add the waste leather shavings after washing to deionized water, adjust the pH to 5 with sodium bicarbonate powder, filter after washing and dehydrate with ethanol. Grinding with a pulverizer, passing through a 100-mesh sieve to obtain collagen fibers;

[0086] (2) Take 10 parts by weight of the pulverized collagen fibers obtained in step (1), and add them to 120 parts by weight of isopropanol solvent containing 10 parts by weight of epoxy soybean oil and 4 parts by weight of catalyst anhydrous tin tetrachloride in advance , stirred at 95 °C for 5 h. Place in 90 ° C oven for 10 h after filtering the discharge;

[0087] (3) Stir and wash the solid fibers obtained in step (2) with isopropanol for 1.5 h, repeat stirring and washing twice to remove unreacted excess epoxidized soybean oil;

[0088] (4) Dry the solid fi...

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Abstract

The invention relates to the technical field of composite materials, and provides an epoxidized soybean oil modified collagen fiber as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out ring-opening grafting reaction on pretreated collagen fibers and a solution containing epoxidized soybean oil and a catalyst at 80-140 DEG C for 4-12 hours. The invention further provides a modified composite material which comprises the epoxidized soybean oil modified collagen fiber and a high polymer, and the high polymer is a high polymer material with the forming processing temperature not higher than the dry heat denaturation temperature of the collagen fiber. According to the invention, the collagenous fiber is modified by using the epoxidized soybean oil, so that the surface free energy of the collagenous fiber is reduced, and the surface of the collagenous fiber has hydrophobicity. The prepared epoxidized soybean oil modified collagenous fibers are mixed with a high polymer matrix, so that the surface free energy and surface polarity difference between the collagenous fibers and the high polymer matrix are reduced, and the obtained modified composite material has excellent mechanical properties and heat resistance.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to epoxy soybean oil modified collagen fibers and a preparation method and application thereof. Background technique [0002] Polymer composite material is a new type of structural material composed of reinforcing material and polymer matrix through different composite processes. It has excellent physical properties, high strength and modulus, and light texture. It has been used in high-performance automobiles, aviation It is widely used in aerospace, building materials, chemical industry and other fields. [0003] Among them, the reinforcing material refers to the high-strength material combined in the matrix to improve the mechanical properties of the matrix, and is divided into zero-dimensional (granular reinforcing material), one-dimensional (fibrous reinforcing material, whisker-like reinforcing material), and two-dimensional Dimensional (sheet or planar textile re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/01C08J5/04C08L27/06C08L67/04C08L11/00C08L61/10C08L9/02C08L89/06D06M101/14
CPCD06M15/01C08J5/045D06M2101/14D06M2200/12C08J2327/06C08J2367/04C08J2361/10C08J2311/00C08J2309/02C08J2489/06
Inventor 曾运航雷超许维星石碧周继博
Owner SICHUAN UNIV
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