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Composition for preparing thermal fuse and application thereof

A technology of composition and thermal fuse, applied in the direction of single-component synthetic polymer rayon, rayon manufacturing, fiber chemical characteristics, etc., can solve the problems of low strength and easy yellowing of thermal fuse, and achieve tensile strength at break High strength, high yellowing level, and the effect of increasing spinnability

Inactive Publication Date: 2020-11-20
浙江吉仑高分子材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of low strength and easy yellowing of thermal fuses, the application provides a composition for preparing high-strength yellowing-resistant strong thermal fuses. The composition includes polyester polyol, polyether polyol , polyacrylate and a reinforcing agent, the reinforcing agent can be a small molecular inorganic powder, thereby improving the tensile strength and yellowing resistance of the thermal fuse

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] Embodiment 1 Preparation of thermal fuse

[0091] (1) Preparation of thermal fuse masterbatch

[0092] Step 1-1, mix poly-1,6-hexanediol adipate (PHA) (molecular weight 1200) 700KG, polytetrahydrofuran diol (molecular weight 2000) 200KG, polyacrylate (molecular weight 5000) 50KG and talcum powder 25KG, blended evenly to obtain mixed polyols;

[0093] Step 1-2, use a metering pump to inject the above-mentioned mixed polyol, 57.9KG of 1,4-butanediol, and 222.9KG of hexamethylene diisocyanate into the reaction twin-screw, the reaction temperature is 190°C, and granulate under water. Dry to obtain spinning masterbatch.

[0094] The masterbatch prepared in this example has a melting point of 70°C, a hardness of 95A, a yellowing grade of 4.2 (footwear resistance to yellowing (GB / T3689-2014, method B, 12H)), a tensile elongation of 100%, and a Tensile strength 35MPa.

[0095] (2) Preparation of thermal fuse

[0096] Step 2-1: Add the spinning masterbatch prepared in this...

Embodiment 2

[0099] Embodiment 2 Preparation of thermal fuse

[0100] (1) Preparation of thermal fuse masterbatch

[0101] Step 1-1, mix poly-1,6-hexanediol adipate (PHA) (molecular weight 1000) 800KG, polytetrahydrofuran diol (molecular weight 1500) 100KG, polyacrylate (molecular weight 60000) 10KG and titanium dioxide 15KG, the parts by weight are blended uniformly to obtain mixed polyols;

[0102] Step 1-2, use a metering pump to inject the above-mentioned mixed polyol, 50.6KG of ethylene glycol, and 420.7KG of 4,4'-diphenylmethane diisocyanate into the reaction twin-screw, the reaction temperature is 190 ° C, underwater granulation, Dry to obtain spinning masterbatch.

[0103]The masterbatch prepared in this example has a melting point of 80°C, a hardness of 85A, a yellowing grade of 5 (footwear resistance to yellowing (GB / T3689-2014, method B, 12H)), a tensile elongation of 60%, and a Tensile strength 40MPa.

[0104] (2) Preparation of thermal fuse

[0105] Step 2-1, add the sp...

Embodiment 3

[0108] Embodiment 3 Preparation of thermal fuse

[0109] (1) Preparation of thermal fuse masterbatch

[0110] Step 1-1, mix poly-1,6-hexanediol adipate (PHA) (molecular weight 1100) 600KG, polytetrahydrofuran diol (molecular weight 1000) 200KG, polyacrylate (molecular weight 8000) 200KG and silicon dioxide 10KG were blended evenly to obtain mixed polyols;

[0111] Step 1-2, inject the above-mentioned mixed polyol, 1,4-butanediol 63.1KG, 4,4'-diphenylmethane diisocyanate 361.8KG into the reaction twin-screw with a metering pump, the reaction temperature is 190°C, water Then granulate and dry to obtain spinning masterbatch.

[0112] The melting point of the masterbatch prepared in this example is 100°C, the hardness is 89A, the yellowing grade is 4.8 (footwear resistance to yellowing (GB / T3689-2014, method B, 12H)), the tensile elongation is 60%, and the fracture Tensile strength 34MPa.

[0113] (2) Preparation of thermal fuse

[0114] Step 2-1, add the spinning masterbat...

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Abstract

The invention provides a composition for preparing a thermal fuse and application thereof. The composition comprises polyester polyol, polyether polyol, polyacrylate, isocyanate, a chain extender anda reinforcing agent, and the composition can form a linear high-molecular compound in the spinning process, so that spinnability is improved, and furthermore, a proper amount of inorganic small-molecular enhancer is added into the organic raw materials, so that on one hand, the tensile strength of the spun thermal fuse is improved, and on the other hand, yellowing resistance of the spun thermal fuse is improved.

Description

technical field [0001] The application belongs to the field of textile fiber preparation, and in particular relates to a composition for preparing hot-melt yarn and its application. Background technique [0002] Thermal fuse, also known as low-melting fiber, is one of the fastest-growing functional fibers in recent years. By adjusting the characteristics of the raw materials, the melting point of the thermal fuse can be controlled between 50°C and 180°C, which is much lower than the melting point of the fibers of woven clothing and other products. Fibers are woven into fabrics, and pressure is applied to the fabric under dry heat or wet heat. When the temperature is higher than the melting point of the thermal fuse, the thermal fuse gradually melts; however, at this temperature, other conventional fibers do not melt and remain unchanged and thus bonded together by thermal fuses. Therefore, the thermal fuse can replace chemical adhesives such as glue, avoid volatile matter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/62C08G18/48C08G18/42D01F6/94D01F1/10
CPCC08G18/4825C08G18/4854C08G18/4238C08G18/4247C08G18/4216C08G18/6216C08G18/4063C08G18/6607D01F6/94D01F1/10
Inventor 吴键儒张先中
Owner 浙江吉仑高分子材料股份有限公司