阅读说明：本技术 一种电缆用无碱玻纤布 (Alkali-free glass fiber cloth for cable ) 是由 周庐 徐水根 夏勇 于 2020-12-11 设计创作，主要内容包括：本发明公开了：一种电缆用无碱玻纤布,其特征在于,包括以下步骤：1)将无碱玻璃球通过熔炉熔化,向熔化后的无碱玻璃球倒入重量比1：1～2的耐磨混合液,耐磨混合液包括铌溶液、乙烯基树脂、增韧剂和离子水,混合搅拌均匀后,拉丝机对其进行拉丝处理获得玻纤；2)将玻纤放入络筒内进行络纱工艺,获得初型玻纤布；3)将初型玻纤布放入烘干机内进行烘干,起始烘干温度为125-145℃,等待预设时间后,将温度升至249-270℃直至烘干结束,获得无碱玻纤布。本发明向无碱玻璃球加入耐磨混合液,增加耐磨性和强度。(The invention discloses: an alkali-free glass fiber cloth for cables is characterized by comprising the following steps: 1) melting the alkali-free glass balls through a melting furnace, and pouring the molten alkali-free glass balls into a melting furnace, wherein the weight ratio of the molten alkali-free glass balls is 1: 1-2, mixing and stirring uniformly a wear-resistant mixed solution which comprises a niobium solution, vinyl resin, a toughening agent and ionized water, and performing wire drawing treatment on the mixed solution by using a wire drawing machine to obtain glass fibers; 2) putting the glass fibers into a bobbin to carry out a winding process to obtain a primary glass fiber cloth; 3) and (3) placing the primary glass fiber cloth into a dryer for drying, wherein the initial drying temperature is 125-145 ℃, after waiting for a preset time, raising the temperature to 249-270 ℃ until the drying is finished, and obtaining the alkali-free glass fiber cloth. The invention adds the wear-resistant mixed liquid into the alkali-free glass ball to improve the wear resistance and strength.)

1. An alkali-free glass fiber cloth for cables is characterized by comprising the following steps:

1) melting the alkali-free glass balls through a melting furnace, and pouring the molten alkali-free glass balls into a melting furnace, wherein the weight ratio of the molten alkali-free glass balls is 1: 1-2, mixing and stirring uniformly a wear-resistant mixed solution which comprises a niobium solution, vinyl resin, a toughening agent and ionized water, and performing wire drawing treatment on the mixed solution by using a wire drawing machine to obtain glass fibers;

2) putting the glass fibers into a bobbin to carry out a winding process to obtain a primary glass fiber cloth;

3) and (3) placing the primary glass fiber cloth into a dryer for drying, wherein the initial drying temperature is 125-plus-145 ℃, after waiting for a preset time, raising the temperature to 150-plus-170 ℃ until the drying is finished, and obtaining the alkali-free glass fiber cloth.

2. The alkali-free fiberglass cloth for cables of claim 1, wherein said method further comprises:

and 4, paving the alkali-free glass fiber cloth in the step 3 at 45-65 ℃, completely placing the spread alkali-free glass fiber cloth in the slurry, taking out the spread alkali-free glass fiber cloth after being silenced for 45-75min, leveling and rolling the spread alkali-free glass fiber cloth, and drying the spread alkali-free glass fiber cloth to obtain the formed alkali-free glass fiber cloth.

3. The alkali-free glass fiber cloth for cables as claimed in claim 2, wherein the paste comprises 30-50 parts of polyimide resin, 30-50 parts of mucilage, 25-40 parts of silicon nitride and 20-45 parts of sodium dodecyl sulfate.

4. The alkali-free glass fiber cloth for cables of claim 1, wherein the alkali-free glass fiber cloth is formed by criss-crossing weaving of transverse glass fiber yarns and longitudinal glass fiber yarns.

5. The alkali-free glass fiber cloth for cables as claimed in claim 1, wherein the wear-resistant mixed solution comprises 35-45 parts of niobium solution, 40-60 parts of vinyl resin, 25-35 parts of toughening agent and 30-45 parts of ionized water.

6. The alkali-free glass fiber cloth for cables as claimed in claim 1, wherein the drying is completed after 45-85min, the temperature is raised to 249-270 ℃ and 65-95 min.

7. The alkali-free fiberglass cloth for cables of claim 1, wherein the toughening agent is a mixture of one or a combination of epoxy resin and phenolic resin.

Technical Field

The invention relates to the technical field of fiber manufacturing, in particular to alkali-free glass fiber cloth for cables.

Background

Alkali-free glass fiber cloth, called alkali-free cloth for short, is suitable for being used as a reinforcing material of mica products, lacquer cloth, glass fiber reinforced plastics and the like for the electrical insulation,

the glass fiber is an inorganic non-metallic material with excellent performance, has various varieties, has the advantages of good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength, but has the defects of brittleness and poor wear resistance. The novel hair-dyeing and-weaving process is characterized in that glass balls or waste glass is used as a raw material and is manufactured through processes of high-temperature melting, wire drawing, winding, weaving and the like, the diameter of each monofilament ranges from several micrometers to twenty-several-meter micrometers, the diameter of each monofilament is equivalent to 1/20-1/5 of one hair, and each bundle of fiber precursor consists of hundreds of monofilaments and even thousands of monofilaments. Glass fibers are generally used as reinforcing materials in composite materials, electrical insulating materials, thermal insulating materials, circuit substrates and other various fields of national economy;

the glass fiber cloth has the advantages of high temperature resistance, ablation resistance, heat insulation, fire prevention and the like, and has stable thermal performance and dielectric performance at higher temperature. The glass fiber product is as same as glass, and is brittle and easy to break; moreover, the wear resistance is poor, and the wear is easily damaged after long-term use, and once a sharp object scratches the surface of the object, irreparable wear is caused.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides alkali-free glass fiber cloth for cables.

In order to solve the technical problems, the invention adopts the following technical scheme: an alkali-free glass fiber cloth for cables is characterized by comprising the following steps:

1) melting the alkali-free glass balls through a melting furnace, and pouring the molten alkali-free glass balls into a melting furnace, wherein the weight ratio of the molten alkali-free glass balls is 1: 1-2, mixing and stirring uniformly a wear-resistant mixed solution which comprises a niobium solution, vinyl resin, a toughening agent and ionized water, and performing wire drawing treatment on the mixed solution by using a wire drawing machine to obtain glass fibers;

2) putting the glass fibers into a bobbin to carry out a winding process to obtain a primary glass fiber cloth;

3) drying the primary glass fiber cloth in a dryer at the initial drying temperature of 125-145 ℃, raising the temperature to 249-270 ℃ after waiting for a preset time until the drying is finished to obtain the alkali-free glass fiber clothBefore the glass fiber is obtained by drawing, the alkali-free glass ball is mixed with the wear-resistant mixed liquid to increase the wear resistance and strength, and the metal niobium has better ductility, heat resistance and hardness, the melting point of the niobium is 2468 ℃, the boiling point is 4742 ℃, and the density is 8.57g/cm³The vinyl resin and the toughening agent can improve the wear resistance and toughness of the glass fiber cloth, and the drying step is divided into two stages, so that the components of the wear-resistant mixed liquid of the alkali-free glass fiber cloth are distributed more uniformly.

Preferably, the method further comprises:

and 4, paving the alkali-free glass fiber cloth in the step 3 at 45-65 ℃, completely placing the spread alkali-free glass fiber cloth in the slurry, taking out the cloth after silencing for 45-75min, leveling and rolling the cloth after taking out, drying the cloth to obtain the formed alkali-free glass fiber cloth, filling the gap between the fibers of the alkali-free glass fiber cloth with the slurry, leveling and rolling the cloth, operating at low temperature, increasing the molecular activity of the slurry, reducing the silencing time, reducing the gap between the fibers, reducing the density, and reducing the weight when the density is smaller.

Preferably, the slurry comprises 30-50 parts of polyimide resin, 30-50 parts of mucilage, 25-40 parts of silicon nitride and 20-45 parts of sodium dodecyl sulfate, and the silicon chloride has high hardness, self lubricating property and wear resistance and is an atomic crystal; oxidation resistance at high temperature;

the polyimide resin has high insulating property, belongs to F-H grade insulation, and is silicon chloride-added polyimide resin, so that the wear resistance and the insulating property of the alkali-free glass fiber cloth are improved.

Preferably, the alkali-free glass fiber cloth is formed by crosswise weaving transverse glass fiber yarns and longitudinal glass fiber yarns.

Preferably, the wear-resistant mixed solution comprises 35-45 parts of niobium solution, 40-60 parts of vinyl resin, 25-35 parts of toughening agent and 30-45 parts of ionized water.

Preferably, after the drying time is 45-85min, the temperature is raised to 150-170 ℃, and after the drying time is 65-95min, the drying is finished.

Preferably, the toughening agent is a mixed solution of one or a combination of epoxy resin and phenolic resin.

Compared with the prior art, the invention has the beneficial effects that:

1. adding a wear-resistant mixed solution into the alkali-free glass balls to increase the wear resistance and strength;

2. the drying step is divided into two stages, so that the components of the wear-resistant mixed liquid of the alkali-free glass fiber cloth are distributed more uniformly;

3. the operation is carried out under the condition of low temperature, the molecular activity of the slurry is increased, the quiet time can be reduced, the gaps among fibers are reduced, the density is reduced, and the smaller the density is, the smaller the weight is.

Detailed Description

The present invention will be described in detail with reference to examples.

Example 1

The invention provides alkali-free glass fiber cloth for cables, which is characterized by comprising the following steps of:

1) melting the alkali-free glass balls through a melting furnace, wherein the alkali-free glass balls are completely melted, and pouring the molten alkali-free glass balls with the weight ratio of 1: 1, the wear-resistant mixed solution comprises 35 parts of niobium solution, 40 parts of vinyl resin, 25 parts of toughening agent (epoxy resin) and 30 parts of ionized water, and after the niobium solution, the vinyl resin, the epoxy resin and the ionized water are mixed and stirred uniformly, a wire drawing machine performs wire drawing treatment on the mixture to obtain glass fibers;

2) putting the glass fiber into a bobbin to carry out a winding process, wherein the process is cross winding and winding to obtain a primary glass fiber cloth;

3) and (3) putting the primary glass fiber cloth into a dryer for drying, wherein the initial drying temperature is 125 ℃, after drying for 45min, raising the temperature to 249 ℃, and after drying for 65min, finishing drying to obtain the alkali-free glass fiber cloth.

Example 2

An alkali-free glass fiber cloth for cables is characterized by comprising the following steps:

1) melting the alkali-free glass balls through a melting furnace, wherein the alkali-free glass balls are completely melted, and pouring the molten alkali-free glass balls with the weight ratio of 1: 1.5, mixing and stirring uniformly a wear-resistant mixed solution which comprises 40 parts of niobium solution, 50 parts of vinyl resin, 30 parts of toughening agent (mixed solution of epoxy resin and phenolic resin) and 40 parts of ionized water, and drawing the mixture by a drawing machine to obtain glass fibers;

2) putting the glass fiber into a bobbin to carry out a winding process, wherein the process is cross winding and winding to obtain a primary glass fiber cloth;

3) and (3) putting the primary glass fiber cloth into a dryer for drying, wherein the initial drying temperature is 130 ℃, drying for 70min, raising the temperature to 260 ℃, and drying for 80min to obtain the alkali-free glass fiber cloth.

Example 3

An alkali-free glass fiber cloth for cables is characterized by comprising the following steps:

1) melting the alkali-free glass balls through a melting furnace, wherein the alkali-free glass balls are completely melted, and pouring the molten alkali-free glass balls with the weight ratio of 1: 2, the wear-resistant mixed solution comprises 45 parts of niobium solution, 60 parts of vinyl resin, 35 parts of toughening agent (mixed solution of epoxy resin and phenolic resin) and 45 parts of ionized water, and after the niobium solution, the vinyl resin, the epoxy resin and the phenolic resin are uniformly mixed and stirred, a wire drawing machine is used for carrying out wire drawing treatment on the mixed solution to obtain glass fibers;

2) putting the glass fiber into a bobbin to carry out a winding process, wherein the process is cross winding and winding to obtain a primary glass fiber cloth;

3) and (3) putting the primary glass fiber cloth into a dryer for drying, wherein the initial drying temperature is 145 ℃, after drying for 85min, the temperature is increased to 270 ℃, and after drying for 95min, the alkali-free glass fiber cloth is obtained.

Comparative example 1

An alkali-free glass fiber cloth is prepared by melting an alkali-free glass ball smelting furnace, carrying out wire drawing treatment on the glass fiber by a wire drawing machine to obtain glass fiber, putting the glass fiber into a bobbin to carry out a winding process to obtain a primary glass fiber cloth, putting the primary glass fiber cloth into a dryer to be dried, wherein the drying temperature is 145 ℃, the drying time is 125min, and obtaining the alkali-free glass fiber cloth after drying is finished.

The surface of the alkali-free glass fiber cloth manufactured by the methods of example 1, example 2, example 3 and comparative example 1 was scratched with a hard material, and the specific data are shown in table 1;

the alkali-free glass fiber fabrics manufactured by the methods of example 1, example 2, example 3 and comparative example 1 are subjected to a bearing weight test, and specific data are shown in table 1;

the density of the alkali-free glass fiber cloth manufactured by the methods of example 1, example 2, example 3 and comparative example 1 is respectively tested, and the specific data are shown in table 1;

TABLE 1

As can be seen from table 1, example 3 is the best solution, comparative example 1 directly uses the alkali-free glass spheres as raw materials to perform the processes of wire drawing, winding and the like, and the glass fiber cloth is directly dried in the drying process without dividing into two stages, and the alkali-free glass fiber cloth manufactured by the comparative example has the defects of poor wear resistance, brittleness, easy fracture, high density and the like.

Example 4

This embodiment is substantially the same as embodiment 3 except that:

in the embodiment, the alkali-free glass fiber cloth in the step 3 is completely placed in the slurry after being tiled at the temperature of 45-65 ℃, the slurry comprises 40 parts of polyimide resin, 30 parts of glue (common glue in the market), 34 parts of silicon nitride and 35 parts of sodium dodecyl sulfate, the slurry is fished out after being silenced for 65min, the slurry is fished out and then leveled and rolled, and the formed alkali-free glass fiber cloth is obtained after drying.

The surface of the alkali-free glass fiber cloth manufactured by the methods of example 3 and example 4 was scratched with a hard material, and specific data are shown in table 2;

the alkali-free glass fiber cloth manufactured by the methods of example 3 and example 4 was subjected to a weight bearing test for the hard material, and the specific data are shown in table 2;

the density of the alkali-free glass fiber cloth manufactured by the methods of example 3 and example 4 is respectively tested by the hard material, and the specific data is shown in table 2;

TABLE 2

As can be seen from table 2, example 4, adding the slurry at low temperature, can increase the abrasion resistance, strength and decrease the density of the alkali-free glass fiber cloth.

The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the patent and protection scope of the present invention should be subject to the appended claims.