阅读说明：本技术 一种超细无碱玻璃纤维缝纫线的制备方法 (Preparation method of superfine alkali-free glass fiber sewing thread ) 是由 李树凯 姚恩明 于 2020-06-04 设计创作，主要内容包括：本发明涉及环保技术领域,一种超细无碱玻璃纤维缝纫线的制备方法,包括如下步骤：步骤1、将单丝直径4.5-5.5um、10-12.5tex的纱线合股制成复合纱线,复合纱线的合股范围150tex-200tex,捻度280±10捻,捻向为Z捻或S捻；步骤2、将复合纱线进行热清洗和热定型,使复合纱线清洗、去掉内应力并使捻度定型；步骤3、使用10％硅烷偶联剂A-151试剂浸润复合纱线,使复合纱线表面形成聚四氟乙烯保护膜；步骤4、将步骤2浸润后的复合纱线渐进式烘干,烘干后的复合纱线收卷。使用本方法制成的纤维缝纫线具有优异的力学性能,同时具有耐酸、耐碱、耐高温的特点。(The invention relates to the technical field of environmental protection, and discloses a preparation method of superfine alkali-free glass fiber sewing thread, which comprises the following steps: step 1, plying yarns with the single-yarn diameter of 4.5-5.5um and the single-yarn diameter of 10-12.5tex to prepare composite yarns, wherein the plying range of the composite yarns is 150tex-200tex, the twist number is 280 +/-10 twists, and the twist direction is Z twist or S twist; step 2, carrying out thermal cleaning and thermal setting on the composite yarn to clean the composite yarn, remove internal stress and set twist; step 3, infiltrating the composite yarns by using a 10% silane coupling agent A-151 reagent to form polytetrafluoroethylene protective films on the surfaces of the composite yarns; and 4, gradually drying the composite yarn infiltrated in the step 2, and winding the dried composite yarn. The fiber sewing thread prepared by the method has excellent mechanical property and has the characteristics of acid resistance, alkali resistance and high temperature resistance.)

1. A preparation method of superfine alkali-free glass fiber sewing thread is characterized by comprising the following steps:

step 1, plying yarns with the single-yarn diameter of 4.5-5.5um and the single-yarn diameter of 10-12.5tex to prepare composite yarns, wherein the plying range of the composite yarns is 150tex-200tex, the twist number is 280 +/-10 twists, and the twist direction is Z twist or S twist;

step 2, carrying out thermal cleaning and thermal setting on the composite yarn to clean the composite yarn, remove internal stress and set twist;

step 3, infiltrating the composite yarns by using a 10% silane coupling agent A-151 reagent to form polytetrafluoroethylene protective films on the surfaces of the composite yarns;

and 4, gradually drying the composite yarn infiltrated in the step 2, and winding the dried composite yarn.

2. The method for preparing an ultra fine alkali-free glass fiber sewing thread according to claim 1, wherein: and (3) performing heat setting on the stranded composite yarn in the step 2 through a high-temperature furnace at the temperature of 380-420 ℃.

3. The method for preparing an ultra fine alkali-free glass fiber sewing thread according to claim 1, wherein: in the step 2, a high-temperature furnace with the furnace length of 6m is used for heat setting, and the passing speed in the composite yarn furnace is 18-24 m/min.

4. The method for preparing an ultra fine alkali-free glass fiber sewing thread according to claim 1, wherein: in step 3, the

Diluting the mixture, adding the diluted mixture into a colloid mill, grinding the mixture for 15min to prepare 10% silane coupling agent A-151 aqueous solution, and diluting the 10% silane coupling agent A-151 aqueous solution by 8 parts by weight and 23.6 parts by weight of softened water to prepare the 10% silane coupling agent A-151 reagent.

5. The method for preparing an ultra fine alkali-free glass fiber sewing thread according to claim 1, wherein: in step 3, the composite yarn is infiltrated using a double-nip yarn.

6. The method for preparing an ultra fine alkali-free glass fiber sewing thread according to claim 1, wherein: in step 4, the composite yarn is gradually dried by using a drying furnace with the inlet temperature of 90-120 ℃, the outlet temperature of 240-260 ℃ and the furnace length of 6 m.

7. The method for preparing an ultra fine alkali-free glass fiber sewing thread according to claim 4, wherein: and (4) winding by adopting a pagoda yarn winding mode, and fixing the yarn type package by using a plastic film.

Technical Field

The invention relates to the technical field of environmental protection, in particular to a preparation method of superfine alkali-free glass fiber sewing thread.

Background

The glass fiber sewing thread is a special sewing thread for manufacturing the high-temperature filter bag, the yarn count of the existing glass fiber sewing thread is thick and soft, the wear resistance and the folding resistance are poor, the hydrolysis reaction is caused particularly under the working condition of sulfur dioxide, the sewing thread is easily scoured by airflow dust on the surface of the filter bag and is mechanically damaged, the filter bag is not damaged in the using process, the sewing thread causes damage and thread opening, the filter bag can not be continuously used, and the great economic loss is caused.

Disclosure of Invention

In order to solve the problems, the invention provides a preparation method of superfine alkali-free glass fiber sewing thread, and the fiber sewing thread prepared by the method has the characteristics of excellent mechanical property, good acid resistance, good alkali resistance and good high temperature resistance.

In order to achieve the purpose, the invention adopts the technical scheme that:

a preparation method of superfine alkali-free glass fiber sewing thread comprises the following steps:

step 1, plying yarns with the single-yarn diameter of 4.5-5.5um and the single-yarn diameter of 10-12.5tex to prepare composite yarns, wherein the plying range of the composite yarns is 150tex-200tex, the twist number is 280 +/-10 twists, and the twist direction is Z twist or S twist;

step 2, carrying out thermal cleaning and thermal setting on the composite yarn to clean the composite yarn, remove internal stress and set twist;

step 3, infiltrating the composite yarns by using a 10% silane coupling agent A-151 reagent to form polytetrafluoroethylene protective films on the surfaces of the composite yarns;

and 4, gradually drying the composite yarn infiltrated in the step 2, and winding the dried composite yarn.

Preferably, the composite yarn after being plied in the step 2 is subjected to heat setting in a high-temperature furnace at 380-420 ℃.

Preferably, in step 2, heat setting is performed using a high temperature furnace having a furnace length of 6m, and the composite yarn passes through the furnace at a speed of 18 to 24 m/min.

Preferably, in step 3, the mixture is subjected to

Diluting the mixture, adding the diluted mixture into a colloid mill, grinding the mixture for 15min to prepare 10% silane coupling agent A-151 aqueous solution, and diluting the 10% silane coupling agent A-151 aqueous solution by 8 parts by weight and 23.6 parts by weight of softened water to prepare the 10% silane coupling agent A-151 reagent.

Preferably, in step 3, the composite yarn is infiltrated using a two-roll yarn.

Preferably, in step 4, the composite yarn is gradually dried by using a drying furnace with the inlet temperature of 90-120 ℃, the outlet temperature of 240-260 ℃ and the furnace length of 6 m.

Preferably, the yarn is wound by adopting a pagoda yarn winding mode, and the plastic film is used for fixing the yarn package.

The invention has the beneficial effects that:

the superfine alkali-free glass fiber sewing thread prepared by the preparation method has the advantages of acid resistance, alkali resistance, flexibility, wear resistance and good folding resistance, the integral service performance is greatly improved, the working condition with severe high corrosivity can be met, and the superfine alkali-free glass fiber sewing thread is widely applied to the steel industry, the carbon black industry, the coal-fired boiler and the smelting industry.

Detailed Description

The present invention is described in detail below.

A preparation method of superfine alkali-free glass fiber sewing thread comprises the following steps:

step 1, plying yarns with the single silk diameter of 4.5-5.5um and the single silk diameter of 10-12.5tex to prepare composite yarns, wherein the plying range of the composite yarns is 150tex-200tex, the twist number is 280 +/-10 twists, and the twist direction is Z twist or S twist.

And 2, carrying out thermal cleaning and thermal setting on the composite yarn to clean the composite yarn, remove internal stress and set twist. Wherein the plied composite yarn is subjected to heat setting in a high-temperature furnace at 380-420 ℃. And (3) carrying out heat setting by using a high-temperature furnace with the furnace length of 6m, wherein the passing speed in the composite yarn furnace is 18-24 m/min.

Step 3, mixing silane coupling agent A-151: 1 by weight; alcohol: 1 part by weight; tween T-80: 0.2 part by weight; softening water: 7.8 parts by weight; diluting the mixture, adding the diluted mixture into a colloid mill, grinding the mixture for 15min to prepare 10% silane coupling agent A-151 aqueous solution, and diluting the 10% silane coupling agent A-151 aqueous solution by 8 parts by weight and 23.6 parts by weight of softened water to prepare the 10% silane coupling agent A-151 reagent. And (3) infiltrating the composite yarn by using a 10% silane coupling agent A-151 reagent, and infiltrating the composite yarn by using double-roller yarn so as to form a polytetrafluoroethylene protective film on the surface of the composite yarn.

And 4, drying the composite yarn soaked in the step 2, gradually drying the composite yarn by using a drying furnace with the inlet temperature of 90-120 ℃ and the outlet temperature of 240-260 ℃ and the furnace length of 6m, winding the dried composite yarn in a pagoda yarn winding manner, and fixing a yarn type package by using a plastic film.

The foregoing is only a preferred embodiment of the present invention, and many variations in the detailed description and the application range can be made by those skilled in the art without departing from the spirit of the present invention, and all changes that fall within the protective scope of the invention are therefore considered to be within the scope of the invention.