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Plasticized starch textile size and preparation method thereof

A textile size and plasticized starch technology, applied in the field of textile size, can solve the problems of unseen plasticized starch application, unseen starch plasticization, etc., to improve physical and mechanical properties, reduce breaking strength and initial modulus , Improve the effect of fracture work

Inactive Publication Date: 2011-05-25
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, there is no report of plasticizing starch in the form of starch solution or suspension, and there is no report of applying plasticized starch to warp yarn size

Method used

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  • Plasticized starch textile size and preparation method thereof
  • Plasticized starch textile size and preparation method thereof
  • Plasticized starch textile size and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 60% to 75% of 94.75 parts of cold water at room temperature into the cooking tank with a stirrer and a thermometer, start stirring, and then pour 5 parts of corn oxidized starch and 0.25 parts of glycerin (the weight ratio of starch is 0.05:1) into the stirring Stir, heat up and boil in cold water, keep warm for 60-90 minutes, then add the remaining 25-40% of hot water to the specified liquid volume to obtain plasticized starch textile size. The size film is prepared according to the film-forming method of the plasticized starch textile size.

[0042] The elongation and modulus of the size film are shown in Table 1, and the hygroscopicity and crystallinity of the size film are shown in Table 2.

Embodiment 2

[0044] With 5 parts of corn oxidized starch, 1 part of glycerin (0.2:1 to starch weight ratio), 94 parts of tap water, the preparation method of the plasticized starch textile size, the film-forming method and the index test method are the same as in Example 1.

[0045] The measured mechanical properties of the serous film are shown in Table 1. The hygroscopicity and crystallinity of the serous film are shown in Table 2.

Embodiment 3

[0047]With 5 parts of corn oxidized starch, 0.25 part of urea (0.05:1 to starch weight ratio), 94.75 parts of tap water, the pulp cooking process, the pulp film making method and the index test method are the same as in Example 1.

[0048] The measured mechanical properties of the serous film are shown in Table 1. The hygroscopicity and crystallinity of the serous film are shown in Table 2.

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Abstract

The invention discloses a method for preparing plasticized starch textile size, which is characterized in that 60-75% 90-94.8 parts by weight of cold water under room temperature is added into a size cooking pan with a stirrer and a thermograph, the cold water is stirred, 3.6-6.0 parts by weight of native starch or modified starch and 0.25-1.4 parts by weight of plasticizer are put into the stirred cold water, mixture is stirred and boiled by heating up, the temperature is persevered for 60-90 min, 25-40% remaining hot water is added to define the mixture at stated liquid measure so as to obtain the plasticized starch textile size with the 5-10% solid content of slurry. The plasticized starch textile size which is prepared by the method effectively reduces the glass transition temperatureTg of starch materials, as well as the rupture strength and the initial modulus of size film, increases the breaking elongation of the size film, improves rupture work, and extends rupture time. Therefore, the weaving quality of chaine can be effectively protected during weaving.

Description

technical field [0001] The invention relates to a plasticized starch textile size and a preparation method thereof, belonging to the field of textile size. technical background [0002] Starch has a long history of being used in warp yarn sizing, because starch comes from plants, is rich in resources, low in price, and has good biodegradability. The macromolecular chain of starch is composed of glucose residues in a ring structure, so its flexibility is poor, the glass transition temperature is high, and the serous film is hard and brittle. During the sizing process, the serous film is easy to crack and fall off, and in severe cases, the warp yarn will be brittle. The brittleness and hardness of the starch film due to the strong hydrogen bond between molecules and molecules indicates that its glass transition is higher than normal temperature, and it belongs to glassy material. If the temperature corresponding to the rubbery state is extended to normal temperature, starch ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M101/06D06M15/11D06M101/32
Inventor 朱谱新王佳丽余建华吴潇钮安建武春香陈勇
Owner SICHUAN UNIV
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