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CN-122013537-A - Enzyme-cured controllable porous pure wool flocculus and preparation method thereof

CN122013537ACN 122013537 ACN122013537 ACN 122013537ACN-122013537-A

Abstract

The invention discloses an enzyme-cured controllable porous pure wool flocculus and a preparation method thereof, and belongs to the technical field of textile materials, wherein wool fibers and polylactic acid fibers are processed into a mixed fiber net, and the wool fibers account for 80-95% of the total mass of the wool fibers and the polylactic acid fibers; finally, the primarily heat-set wool flocculus is padded in a transglutaminase solution at 20-30 ℃, then is insulated at 40-55 ℃, polylactic acid fibers are removed, and then after finishing is carried out, thus obtaining the controllable porous pure wool flocculus, which has a permanent stable structure and can keep high fluffiness and excellent air permeability on the premise of not introducing non-natural components.

Inventors

  • DONG HEXIANG
  • MA DI
  • Song Yunying
  • ZHU CHAO

Assignees

  • 辛集市宝隆科技有限公司
  • 辛集市梅花皮业有限公司
  • 辛集市卓品家纺有限公司

Dates

Publication Date
20260512
Application Date
20260130

Claims (10)

  1. 1. The preparation method of the enzyme-cured controllable porous pure wool flocculus is characterized by comprising the following steps of: S1, processing wool fibers and polylactic acid fibers into a mixed fiber web, wherein the wool fibers account for 80-95% of the total mass of the wool fibers and the polylactic acid fibers; s2, carrying out heat treatment on the mixed fiber web for a plurality of seconds under the condition of 0.1-0.3 MPa to obtain a primary heat-set wool flocculus; And S3, padding the primarily heat-set wool flocculus in a transglutaminase solution at 20-30 ℃, then preserving heat at 40-55 ℃, removing polylactic acid fibers, and then finishing to obtain the controllable porous pure wool flocculus.
  2. 2. The method for preparing the enzyme-cured controllable porous pure wool wadding according to claim 1, wherein the wool fibers in the step S1 are wool short fibers with an average length of 50-70mm, the polylactic acid fibers are polylactic acid short fibers with a length of 38-51mm and a fineness of 2-4dtex.
  3. 3. The method for preparing the enzyme-cured controllable porous pure wool wadding according to claim 1, wherein the step S1 comprises the steps of uniformly mixing wool fibers and polylactic acid fibers, and then sequentially opening, carding and cross-lapping to form a mixed fiber web.
  4. 4. The method for preparing a controlled porous pure wool batt by enzyme curing according to claim 1, characterized in that the temperature of the heat treatment in S2 is 120-135 ℃.
  5. 5. The method for preparing a controlled porous pure wool batt by enzyme curing according to claim 4, wherein S2 is to heat treat the mixed fiber web at 0.1-0.3 MPa for 5-15S to obtain a primarily heat-set wool batt.
  6. 6. The method for preparing enzyme-immobilized controllable porous pure wool flakes according to claim 1, wherein the pH value of the transglutaminase solution is 6.0-7.5 and the enzyme activity is 50-100U/g.
  7. 7. The method for preparing enzyme-immobilized controllable porous pure wool flakes according to claim 6, wherein the transglutaminase solution of S3 is dissolved with proline or glycine, and the proline or glycine is 0.1-5% of the total mass of the transglutaminase solution.
  8. 8. The method for preparing a controlled porous pure wool batt cured by enzyme according to claim 1, wherein S3 is carried out by padding the primarily heat-set wool batt in a transglutaminase solution and then incubating at 40-55 ℃ for 20-40min.
  9. 9. The method for preparing a controllable porous pure wool wadding solidified by enzyme according to claim 8, wherein S3 is to wash the wool wadding obtained after heat preservation in deionized water at 60-80 ℃ until polylactic acid is removed, and then to finish.
  10. 10. A controllable porous pure wool batt obtainable by the process for the preparation of a controllable porous pure wool batt of any of claims 1 to 9 cured with an enzyme.

Description

Enzyme-cured controllable porous pure wool flocculus and preparation method thereof Technical Field The invention belongs to the technical field of textile materials, and particularly relates to a controllable porous pure wool flocculus solidified by enzyme and a preparation method thereof. Background Wool is used as a natural and comfortable thermal material and has wide application in the fields of daily clothing and outdoor exercises. However, pure wool flakes have a long-felt technical problem in application, namely insufficient structural stability. Under the traditional physical processing technology, the wool fibers lack of effective connection, and the finished product is easy to slip and loose after long-term use or washing, so that the problems of caking, deformation, thickness thinning and the like of the flocculus are caused, and the thermal insulation uniformity and the service life of the flocculus are seriously influenced. In order to solve the problem, the prior proposal has the following different technical paths that firstly, synthetic fibers are added, and a stable structure is formed by mixing low-melting synthetic fibers such as terylene, polyethylene and the like into wool and performing hot melt bonding on the synthetic fibers, wherein the synthetic fibers are represented by Chinese patent invention with publication number of CN106283384A and the name of composite antibacterial wool flocculus and a preparation method thereof. Although the stability is improved, the method has the fundamental defects that the purely natural property of the material is sacrificed, the product is not 100% pure wool, and the synthetic fiber is difficult to degrade, contrary to the current environmental protection trend. Second, pure cross-linking, namely directly treating the pure wool fiber web by using thermosetting resin and a chemical cross-linking agent. Although the method can form connection, the crosslinking process is difficult to control, and the excessive adhesion of fibers is easy to cause the flocculus to harden and harden, so that the original fluffiness, softness and air permeability of wool are lost. Third, pure biological enzyme crosslinking, for example, utilizing the catalytic crosslinking properties of glutamine transaminase, is used in the processing of damaged wool protein fibers and fabrics and other specialty animal fibers to maintain and improve the mechanical properties (such as breaking strength, elongation at break, and felted ball density) of the fibers and fabrics. However, this method has a disadvantage in that the loose fleece web collapses due to lack of support during wet processing. The enzyme cross-linking and fixing structure is just the collapsed structure with low bulk, and the finally obtained product has poor bulk and poor heat insulation performance although stable. Therefore, how to prepare a pure wool wadding which has a permanent stable structure and can keep high bulkiness and excellent air permeability without introducing non-natural components is a technical problem to be solved in the field. Disclosure of Invention Aiming at the problems in the prior art, the invention provides a controllable porous pure wool flocculus solidified by enzyme and a preparation method thereof, which are used for solving the problem of preparing the pure wool flocculus with a permanent stable structure and high fluffiness and excellent air permeability without introducing non-natural components, and has a stable porous structure. The invention is realized by the following technical scheme: the preparation method of the controllable porous pure wool flocculus solidified by enzyme specifically comprises the following steps: Step 1, processing wool fibers and polylactic acid fibers into a mixed fiber web, wherein the wool fibers account for 80-95% of the total mass of the wool fibers and the polylactic acid fibers; Step 2, carrying out heat treatment on the mixed fiber web for a plurality of seconds under the condition of 0.1-0.3 MPa to obtain a primary heat-set wool flocculus; and 3, padding the primarily heat-set wool flocculus in a transglutaminase solution at 20-30 ℃, then preserving heat at 40-55 ℃, removing polylactic acid fibers, and then finishing to obtain the controllable porous pure wool flocculus. The invention further improves that: The wool fibers in the step 1 are wool short fibers, the average length is 50-70mm, the polylactic acid fibers are polylactic acid short fibers, the length is 38-51mm, and the fineness is 2-4dtex; firstly, uniformly mixing wool fibers and polylactic acid fibers, and then sequentially opening, carding and cross-lapping to form a mixed fiber web. And 2, heat treatment is carried out at the temperature of 120-135 ℃ for 5-15s, so as to obtain the wool flocculus subjected to preliminary heat setting. The pH value of the transglutaminase solution in the step 3 is 6.0-7.5, the enzyme activity is 50-100U/g, and proline or glycine is dissolved, wher