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Preparation method for foamed yarns

A foam and yarn technology, which is applied in the field of foam yarn preparation, can solve the problems that the appearance and performance of the core-spun yarn are not significantly improved, the combination method and preparation process need to be studied, and the application of yarn has not been reported, etc., to achieve strong plasticity , Short time consumption, uniform and dense cells

Active Publication Date: 2019-09-10
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the surface of the core-spun yarn is wrapped with other types of yarn, although it is different from the core material, they all belong to fibers, and the overall difference is not large, and the improvement of the appearance and performance of the core-spun yarn is not obvious enough; With the improvement of people's living standards, the relatively simple appearance of traditional yarns has gradually become difficult to meet people's needs. It needs to be compounded with other materials to develop new types of yarns with different appearances and excellent performance.
[0004] At the same time, polyurethane materials, as a new organic polymer material, are widely used in many fields of the national economy; among them, polyurethane foam materials are mainly made of isocyanate and polyether, and are used in foaming agents, catalysts, flame retardants, etc. It is a high molecular polymer foamed under the action of various additives. It has a porous structure and is widely used for its good heat retention, adhesion, sound insulation, insulation and water resistance. The application in the thread has not been reported, and its combination with the yarn and the preparation process are still to be studied

Method used

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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  • Preparation method for foamed yarns
  • Preparation method for foamed yarns
  • Preparation method for foamed yarns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The present embodiment provides a kind of preparation method of foam yarn, comprises the steps:

[0036] (1) Preparation of main ingredients

[0037] Put the mixed solution of polyether polyol and isocyanate in the mixing tank, add tin catalyst and stir to obtain the main material; wherein, the mass ratio of polyether polyol to isocyanate is 30:70; the tin catalyst The mass fraction of the catalyst is 1.5%; the stirring temperature is 60° C., the stirring speed is 1000 r / min, and the stirring time is 6 min.

[0038] (2) Preparation of additives

[0039] Mix polyether polyol, amine catalyst, blowing agent, foam stabilizer, after stirring uniformly, obtain auxiliary agent; Wherein, the mass fraction of described polyether polyol is 66%; The mass fraction of described amine catalyst is 0.9%; the mass fraction of the foaming agent is 10.9%; the mass fraction of the foam stabilizer is 0.7%; the stirring temperature is 60° C., the stirring speed is 1000 r / min, and the stirr...

Embodiment 2～5

[0048] Embodiments 2-5 provide a kind of preparation method of foamed yarn, compared with embodiment 1, the difference is that polyether polyol, isocyanate, tin catalyst, amine catalyst, blowing agent and homogenizer in the raw material are changed. The mass fraction of foaming agent; Wherein polyether polyol is divided into two parts and adds in step (1) and step (2) respectively, and its specific consumption and the contrast with embodiment 1 are as shown in table 1.

[0049] The foamed yarn raw material mass fraction of table 1 embodiment 1~5

[0050]

[0051]

[0052] The foamed yarn appearance of the embodiment 1~5 prepared by the raw material mass fraction shown in table 1 is as follows figure 2 shown. Depend on figure 2 It can be seen that compared with the original cotton yarn, the surface of the foam yarn is covered with foam, and the degree of foaming of the foam yarn prepared according to different raw material mass fractions is different, so the size and ...

Embodiment 6～12

[0055] Embodiments 6-12 provide a preparation method of foamed yarn. Compared with Example 1, the difference is that the parameters of the stirring process, its specific parameter settings, and the elongation at break and breaking strength of the foamed yarn produced are changed. As shown in table 2.

[0056] The mechanical property comparison of the foamed yarn of table 2 embodiment 6~12 and embodiment 1

[0057]

[0058] According to the data shown in table 2, compare examples 6 and 7, embodiment 8 and 1, embodiment 9 and 10, embodiment 11 and 12 successively, it can be seen that when the stirring temperature is constant, with stirring speed and stirring time The elongation at break and the breaking strength of the foamed yarn produced showed a trend of decreasing first and then increasing. When the stirring speed reached 1000r / min and the stirring time was 6min, the effect of increasing the stirring speed and the stirring time on the foamed yarn The improvement of the p...

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Abstract

The invention discloses a preparation method for foamed yarns. The preparation method includes preparation of a main material, preparation of an auxiliary agent, padding treatment and preparation of the foamed yarns. The preparation method has the advantages that polyether polyol, isocyanate and a tin catalyst are mixed to obtain the main material, a mixed solution of the polyether polyol, an amine catalyst, a foaming agent and a foam stabilizer is used as the auxiliary agent, an in-situ polymerization method is applied, the raw materials required for reaction are respectively padded on two yarns, solution mixing is simulated through twisting, uniform and compact polyurethane foam is formed by the yarns from inside to outside, the adhesion of a foam film layer is improved, and accordingly,the foamed yarns with unique appearances are obtained; different base materials can be prepared into fabrics with different shapes according to needs, and accordingly, the plasticity is high; the preparation method is simple, the consumed time is short, the equipment requirements are low, and wide application can be realized.

Description

technical field [0001] The invention relates to the technical field of spinning, in particular to a method for preparing foam yarn. Background technique [0002] As a kind of textile, yarn is a product with a certain fineness processed from various textile fibers. It can be used for weaving, rope making, thread making, knitting and embroidery, etc., and is widely used in daily life. There are many kinds of yarns with different properties. According to the number of materials used in the yarns, they can be divided into pure spinning yarns with only a single fiber type and composite yarns composed of two or more fibers. Because composite yarns It can integrate the advantages of various raw materials, has better overall performance and wider application range, so it has attracted extensive attention. [0003] The currently commonly used composite yarn is core-spun yarn, which is a yarn spun with filament as the core and wrapped with short fibers. . However, since the surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M23/04D06M15/568D06M15/647D06B3/04C08G18/76C08G18/48C08G18/24C08G18/18C08G101/00D06M101/06
CPCC08G18/165C08G18/1808C08G18/246C08G18/4829C08G18/7614C08G2110/0083D06B3/04D06M15/568D06M15/647D06M23/04D06M2101/06
Inventor 徐卫林付专周思婕夏良君王阿明王运利
Owner WUHAN TEXTILE UNIV
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