Preparation method of proteins and protein-based sizes for warp sizing

A warp yarn sizing and protein technology, which is applied in the field of protein and protein-based sizing preparation, and achieves the effects of excellent sizing effect, good film-forming properties and good mechanical properties

Inactive Publication Date: 2013-05-08
DONGHUA UNIV
1 Cites 55 Cited by

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a preparation method of proteins and protein-based sizes for warp sizing. The method comprises the following steps: (1) taking, putting the protein raw materials, such as plant proteins, animal proteins or animal-protein-based-materials, which are taken as size raw materials, into a sodium hydroxide solution or an alcohol solution, heating the obtained mixture for 30-60 minutes under the constant temperature condition of 20-90 DEG C, adjusting the pH value of the obtained mixture to be 7-8, removing undissolved precipitates through centrifugation or suction filtration, and eventually producing proteins or protein-based sizes; and (2) soaking thick yarns, spun yarns, fabrics or other textile materials into the sizes for 5-10 minutes at 20-90 DEG C, and after fabrics are soaked in the sizes, carrying out constant-speed rolling in the thickness direction of the fabrics. The proteins and the protein-based sizes prepared by using the method disclosed by the invention have good biodegradable properties, and can be directly applied to the sizing of cotton yarns, polyesters, polyester cotton blended yarns and other blended yarns, and the size preparation is low in cost and does not pollute the environment.

Application Domain

Fibre treatment

Technology Topic

Protein proteinChemistry +11

Image

  • Preparation method of proteins and protein-based sizes for warp sizing
  • Preparation method of proteins and protein-based sizes for warp sizing
  • Preparation method of proteins and protein-based sizes for warp sizing

Examples

  • Experimental program(17)

Example Embodiment

[0036] Example 1
[0037] Soy protein sizing polyester-cotton blended yarn
[0038] (1) Preparation of soybean protein slurry:
[0039] Using soybeans as the raw material of the slurry, place it in a 0.1% sodium hydroxide solution with a protein mass percentage of 0.01% to 10%. After the mixed solution is fully stirred, heat it at 90°C for 30 minutes at a constant temperature. The pH of the slurry was adjusted to 7 to 8 with 37% hydrochloric acid, and the undissolved precipitated material was removed by centrifugation or suction filtration, and finally three concentrations (0.5%, 1%, 1.5%) of soybean protein slurry were prepared.
[0040] Polyester/cotton blended yarn is sizing with three concentrations (0.5%, 1%, 1.5%) of soy protein slurries at different temperatures (20℃, 50℃, 70℃, and 90℃), and commercial sizing materials are used. Sizing the same kind of polyester-cotton blended yarn as a control group. figure 1 Shows the difference in tensile strength between sizing and unsizing yarns. In the figure, the tensile strength of polyester-cotton blended yarn sizing with 1.5% soy protein size is higher than that of unsizing yarn and the control group at each sizing temperature. The strength of polyester-cotton blended yarn treated with 1% soybean protein sizing agent is also higher than that of the control group when the sizing temperature is 70°C or 90°C.

Example Embodiment

[0041] Example 2
[0042] Soy protein sizing polyester yarn
[0043] Using soybean protein as the raw material of the slurry, place it in a 0.1% sodium hydroxide solution with a protein mass percentage of 0.01% to 10%. After the mixed solution is fully stirred, it is heated at a constant temperature of 90°C for 30 minutes. The pH of the slurry is adjusted to 7 to 8 with hydrochloric acid with a concentration of 37%, and the undissolved precipitation material is removed by centrifugation or suction filtration, and the soybean protein slurry is finally prepared.
[0044] figure 2 Demonstrated the tensile strength of polyester yarn sizing with soybean protein slurry. The tensile strength of sizing polyester yarn is higher than that of unsizing yarn, but it is lower than that of commercial sizing PVA yarn.

Example Embodiment

[0045] Example 3
[0046] The properties of wheat protein slurry
[0047] The commercially available wheat protein contains 80% of the protein and can be used for slurry preparation.
[0048] Using wheat protein as the raw material of the slurry, place it in a 0.1% sodium hydroxide solution with a protein mass percentage of 0.01% to 10%. After the mixed solution is fully stirred, it is heated at a constant temperature of 90°C for 30 minutes. The pH of the slurry is adjusted to 7 to 8 with hydrochloric acid with a concentration of 37%, and the undissolved precipitation material is removed by centrifugation or suction filtration, and finally a wheat protein slurry is prepared.
[0049] Table 1 shows the properties of polyester-cotton blended roving, polyester roving, spun yarn and fabric treated with wheat protein slurry. In Table 1, the effect of wheat protein on the stretching and wear resistance of polyester-cotton blended rovings and fabrics after sizing is similar to that of commercial sizing PVA, but the sizing effect of polyester rovings and fabrics is not as good as commercial sizing PVA.
[0050]
[0051]
[0052] Table 1
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Classification and recommendation of technical efficacy words

  • Good film forming
  • Good mechanical properties

People also interested in

Constant speedPolyesterSizingYarnSodium hydroxideFiltration
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