CN204955594U - Compound aramid fiber of nano meter aluminium does not have latitude cloth and manufacture equipment thereof - Google Patents

Abstract

A nano-alumina composite aramid non-weft cloth, the structure of which includes a multi-layered nano-alumina composite aramid non-weft cloth; each layer of nano-alumina composite aramid non-weft cloth is a single fiber cloth It is superimposed with another single-material fiber cloth of the same size and shape, and the warp and latitude lines are perpendicular to each other, and is formed by heating and pressing, bonding and fixing and connecting; a manufacturing equipment for nano-alumina composite aramid non-weft cloth, including , an electric drum, a fiber drum, a plastic box and a drying device, one end of the electric drum is connected to one end of the plastic box, the other end of the plastic box is connected to one end of the drying device, and the other end of the drying device is connected to the fiber One end of the barrel is connected, and a waste heat recovery device is installed above the drying device. This utility model enhances the hardness and impact resistance of non-metallic bulletproof materials, and reduces the overall bulletproof material while enhancing various bulletproof parameters. Load weight, simple process, high safety factor.

Description

A kind of nano-alumina composite aramid non-weft fabric and its manufacturing equipment

technical field

The utility model patent relates to a non-weft cloth and its production and preparation technology field, especially a nano-alumina composite aramid non-weft cloth and its manufacturing equipment. The weight percentage is 0.5-8.0. This composite aramid non-weft fabric has good impact resistance (anti-) performance and excellent blunt damage resistance. It is produced and processed by special equipment, which is energy-saving and environmentally friendly.

Background technique

The full name of aramid fiber is "poly-paraphenylene terephthalamide", and its English name is Aramidfiber. It is a new type of high-tech synthetic fiber. Because the molecular chain contains benzene ring structure, its molecular chain has high rigidity and high fiber strength. Its strength is 5 to 6 times that of ordinary steel wire, its modulus is 2 to 3 times that of steel wire or glass fiber, its toughness is twice that of ordinary steel wire, and its weight is only about 1/5 of that of ordinary steel wire. Under the environment, its special molecular chain structure can ensure that the fiber does not decompose, does not melt, and has good insulation.

Traditional bulletproof non-metallic materials basically use aramid non-woven fabric technology, which is made of aramid fibers on winding machines and other equipment through processes such as spinning, dipping, and drying. Nowadays, acrylic and polyurethane are generally used as the main components. These glues cover the fibers to fix the position of the fibers, so that when the non-weft fabric is impacted by a bullet, it can transmit the energy of the bullet along the fiber and play a bulletproof role. effect.

The performance of aramid fiber is very good, with the highest anti-expansion strength, high elastic modulus and low specific density, but a single aramid fiber is not bulletproof, and must be combined with glue to make a weft-free fabric to The state of the cloth, the multi-layered form absorbs and disperses the energy of the impact of the bullet, and plays the role of bulletproof. However, due to the fact that the mechanical properties of the glue are far from those of the aramid fiber, the comprehensive performance of the aramid non-weft fabric prepared by the above-mentioned technology is greatly affected, which is mainly reflected in the low hardness of the non-weft fabric, that is, when the bullet is incident, there is no weft The creep of the cloth is serious and the impact resistance is poor. Although the bullet did not penetrate, it caused a very serious "blunt injury". We can only add layers of non-weft cloth or increase the cost of anti-blunt injury materials to achieve the protective effect. Increased load on the wearer.

Due to the above-mentioned technical characteristics of the aramid limiter, most bulletproof vests, helmets, and bulletproof armors today use this type of technology, but the bulletproof device made of this material is lighter than steel plates, easy to carry, and low in manufacturing costs. Advantages, but its hardness and impact resistance still need to be improved.

Moreover, the existing production equipment consumes a lot of energy, does not have the concept of environmental protection and energy saving, and causes great harm to the environment and operators, and some raw materials are wasted in the manufacturing process.

Utility model content

The purpose of this utility model is to provide a nano-alumina composite aramid non-weft fabric and its manufacturing equipment, which solves the shortcomings of traditional bulletproof materials and their manufacturing processes, improves the impact resistance and its own hardness, and has simple processes and materials. Low cost, light load, energy saving and environmental protection.

In order to solve the above-mentioned technical problems, the utility model provides a nano-alumina composite aramid non-weft fabric, the composition of which includes: aramid fiber and glue, nano-alumina is added to the glue, and the nano-alumina is compounded The weight percentage of the aramid non-weft fabric is 0.5-8.0; its structural composition includes the superposition of multi-layer nano-alumina composite aramid non-weft fabric, that is, a multi-layer structure, and each layer of nano-alumina composite aramid fiber The non-weft fabric is composed of one single-material fiber cloth and another single-material fiber cloth of the same size and shape, and the warp and latitude lines are perpendicular to each other, which are fixed and connected by heating and pressing;

The addition of nano-alumina makes the molecules move as a whole in the form of small pieces, which not only reduces the creep of macromolecules, but also improves the impact resistance of the material;

Two pieces of fiber cloth are bonded together to make a non-weft cloth with warp and weft effect. Because of the warp and weft effect of this nano-alumina composite aramid non-weft cloth, the same thickness has been verified by experiments under the condition of absorbing the kinetic energy of bullets. , which works best.

As a kind of illustration, described glue solution comprises: resin aqueous solution, curing agent and nano-alumina, and the mass ratio of resin aqueous solution and main resin is 20-50:80-50; The mass ratio of resin aqueous solution and curing agent is 100: 0.1-5;

As an example, the main resin generally adopts polyurethane or acrylic resin;

As an example, the curing agent can be one or a combination of amine curing agent, acid anhydride curing agent and polyamide curing agent;

As an illustration, a certain proportion of auxiliary agents such as defoamers and dispersants can also be added in the glue;

As an illustration, the content of the auxiliary agent does not exceed 10% of the total mass;

The utility model also provides a manufacturing equipment for nano-alumina composite aramid non-weft fabric,

Including, electric drum, fiber drum, plastic box and drying device, one end of the electric drum is connected to one end of the plastic box, the other end of the plastic box is connected to one end of the drying device, the other end of the drying device is connected to One end of the fiber tube is connected;

As an example, a waste heat recovery device is also arranged above the drying device;

As an example, the waste heat recovery device sucks the waste heat waste gas containing rubber particles on the drying device through the suction operation of the suction fan, and supplies it to the plastic box for preheating through the pipeline;

The waste heat recovery device reuses the recovered waste heat to preheat the colloid in the plastic box, so that the colloid in the plastic box can achieve a better effect of rolling glue with the fiber, without wasting energy twice, and can also The harmful colloid particles absorbed by the drying device are put into the colloid in the plastic box again to fix them, so as to play the double role of energy saving and environmental protection.

The utility model also provides a preparation method of nano-alumina composite aramid non-weft fabric, including: glue preparation process, glue rolling operation process, parking and cutting process, heating and drying process and interlaced lamination process;

1. Glue preparation process:

It is prepared by resin aqueous solution, curing agent and nano-alumina. The mass ratio of resin aqueous solution to main resin is 20-50:80-50; the mass ratio of resin aqueous solution to curing agent is 100:0.1-5; nano-alumina is compounded The weight percentage of the aramid non-woven fabric is 0.5-8.0; a certain proportion of antifoaming agent and dispersant and other additives can also be added to the glue, and the content of the additives does not exceed 10% of the total mass; the main body The equipment adopts a professional winding machine for making non-woven fabrics, and puts the prepared glue in the glue box of the winding machine to complete the glue preparation process;

2. Rolling glue operation process:

Pass the aramid fiber through the plastic box, fix it on one end of the drum of the winding machine, turn on the machine, the aramid fiber passes through the plastic box, sticks with glue, and winds on the drum of the winding machine;

The speed of the winding machine drum is set according to the linear density of the aramid fiber to ensure that the fibers are arranged in parallel without gaps;

3. Parking and cutting process:

When the fiber arrangement is wound to the other end of the drum, it means that a layer of cloth is ready. At this time, turn off the equipment, cut the fiber, and complete the parking cutting process;

4. Heating and drying process:

Heat and dry the completed piece of single-material fiber cloth, the temperature range is between 50°C and 120°C; after drying, remove the single-material fiber cloth from the drum to complete the heating and drying process;

5. Staggered lamination process:

Take off the arranged single-material fiber cloth and cut it along half of the vertical fiber direction to form two pieces of the same size and shape. Rotate one of the fiber cloths clockwise by 90 degrees and cover the other. By heating and pressing, two pieces of fiber cloth are bonded together to make a weft-free cloth with warp and weft effects, and the interlaced lamination process is completed.

Alumina, also known as aluminum oxide, is a white crystalline powder, a functional structural material with excellent properties such as high strength, high hardness, wear resistance, corrosion resistance, high temperature resistance, oxidation resistance, good insulation, and large surface area. Alumina has many heterogeneous phases, among which the most common crystal forms are α, β, γ and so on. In recent years, with the continuous deepening of research on nano-alumina, its application fields are also constantly expanding. Nano-alumina glue is positively charged feather-like alumina particles dispersed in an adhesive that uses water as a solvent. Due to its unique structural characteristics, it can be evenly dispersed in the main resin of the adhesive to form a resin/nano-alumina composite material. The mechanical, thermal, and electromagnetic properties of this composite material are significantly different from those of the original resin. In particular, the wear resistance, toughness and impact resistance have been greatly improved, resulting in excellent comprehensive performance. Moreover, the viscosity of the glue is low, and the place where water can penetrate can penetrate. When the water in the glue evaporates, the colloidal particles are firmly attached to the surface of the object, and aluminum-oxygen bonds are formed between the particles, which greatly improves the hardness and resistance of the material. impact performance.

The beneficial effects of the utility model:

1. The hardness and impact resistance of non-metallic bulletproof materials are enhanced through the special process of adding aluminum oxide in the glue;

2. Manufactured with a special process, in the case of enhancing various bulletproof parameters, the load weight of the overall bulletproof material is reduced;

3. The process is simple, the cost is low, and the safety factor is high;

4. Manufacturing equipment is energy-saving and environmentally friendly;

Description of drawings

Fig. 1 is the schematic diagram of the manufacturing equipment of a kind of nano-alumina composite aramid non-weft fabric of the present invention

detailed description

Preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

Referring to Figure 1, a nano-alumina composite aramid non-weft fabric and its manufacturing equipment solve the shortcomings of traditional bulletproof materials and their manufacturing processes, improve impact resistance and their own hardness, simple process, and low material cost , the load is light.

In order to solve the above-mentioned technical problems, the utility model provides a nano-alumina composite aramid non-weft fabric, the composition of which includes: aramid fiber and glue, nano-alumina is added to the glue, and the nano-alumina is compounded The weight percentage of the aramid non-woven fabric is 0.5-8.0; it has been verified by experiments that when the nano-alumina is at this weight percentage, the bulletproof effect is the best and the manufacturing cost is the lowest;

The addition of nano-alumina makes the molecules move as a whole in the form of small pieces, which not only reduces the creep of macromolecules, but also improves the impact resistance of the material;

As an illustration, the glue solution includes: resin aqueous solution, curing agent and nano-alumina, the mass ratio of resin aqueous solution and main resin is 20-50:80-50, through experimental verification, the preparation of this kind of ratio can not While changing the anti-ballistic performance, minimize the pollution to the environment;

The mass ratio of the resin aqueous solution to the curing agent is 100:0.1~5. It has been verified by many experiments that this ratio setting can maximize the convenience of process production while ensuring the lowest manufacturing cost and the best ballistic performance. Labor intensity, increase the delivery time of finished products;

As an example, the main resin generally adopts polyurethane or acrylic resin;

As an example, the curing agent can be one or a combination of amine curing agent, acid anhydride curing agent and polyamide curing agent;

As an illustration, a certain proportion of auxiliary agents such as defoamers and dispersants can also be added in the glue;

As an illustration, the content of the auxiliary agent does not exceed 10% of the total mass;

A kind of manufacturing equipment of nano-alumina composite aramid non-woven fabric,

Including, electric drum 101, fiber drum 104, plastic box 102 and drying device 103, one end of described electric drum 101 is connected with one end of plastic box 102, and the other end of plastic box 102 is connected with one end of drying device 103, so The other end of the drying device 103 is connected with an end of the fiber drum 104;

As an example, a waste heat recovery device 105 is also arranged above the drying device 103;

As an example, the waste heat recovery device 105 sucks the waste heat waste gas containing glue particles on the drying device 103 through the suction operation of the suction fan, and supplies it to the plastic box 102 for preheating through the pipeline;

The waste heat recovery device 105 reuses the recovered waste heat to preheat the colloid in the plastic box 102, so that the colloid in the plastic box 102 achieves a better rolling effect with the fiber, and does not waste energy twice , and the harmful colloid particles absorbed on the drying device 103 can also be put into the colloid in the plastic box 102 to be fixed again, so as to play the double role of energy saving and environmental protection.

The utility model also provides a preparation method of nano-alumina composite aramid non-weft fabric, including: glue preparation process, glue rolling operation process, parking and cutting process, heating and drying process and interlaced lamination process;

1. Glue preparation process:

It is prepared by resin aqueous solution, curing agent and nano-alumina. The mass ratio of resin aqueous solution to main resin is 20-50:80-50; the mass ratio of resin aqueous solution to curing agent is 100:0.1-5; nano-alumina is compounded The weight percentage of the aramid non-woven fabric is 0.5-8.0; a certain proportion of antifoaming agent and dispersant and other additives can also be added to the glue, and the content of the additives does not exceed 10% of the total mass; the main body The equipment adopts a professional winding machine for making non-woven fabrics, and puts the configured glue in the glue box 102 of the winding machine to complete the glue preparation process;

2. Rolling glue operation process:

Pass the aramid fiber through the plastic box 102, fix it on one end of the drum of the winding machine, turn on the machine, the aramid fiber passes through the plastic box 102, sticks with glue, and winds on the drum of the winding machine;

The speed of the winding machine drum is set according to the linear density of the aramid fiber to ensure that the fibers are arranged in parallel without gaps;

3. Parking and cutting process:

When the fiber arrangement is wound to the other end of the drum, it means that a layer of cloth is ready. At this time, turn off the equipment, cut the fiber, and complete the parking cutting process;

4. Heating and drying process:

Heat and dry the completed piece of single-material fiber cloth, the temperature range is between 50°C and 120°C; after drying, remove the single-material fiber cloth from the drum to complete the heating and drying process;

5. Staggered lamination process:

Take off the arranged single-material fiber cloth and cut it along half of the vertical fiber direction to form two pieces of the same size and shape. Rotate one of the fiber cloths clockwise by 90 degrees and cover the other. By heating and pressing, two pieces of fiber cloth are bonded together to make a weft-free cloth with warp and weft effects, and the interlaced lamination process is completed.

Alumina, also known as aluminum oxide, is a white crystalline powder, a functional structural material with excellent properties such as high strength, high hardness, wear resistance, corrosion resistance, high temperature resistance, oxidation resistance, good insulation, and large surface area. Alumina has many heterogeneous phases, among which the most common crystal forms are α, β, γ and so on. In recent years, with the continuous deepening of research on nano-alumina, its application fields are also constantly expanding. Nano-alumina glue is positively charged feather-like alumina particles dispersed in an adhesive that uses water as a solvent. Due to its unique structural characteristics, it can be evenly dispersed in the main resin of the adhesive to form a resin/nano-alumina composite material. The mechanical, thermal, and electromagnetic properties of this composite material are significantly different from those of the original resin. In particular, the wear resistance, toughness and impact resistance have been greatly improved, resulting in excellent comprehensive performance. Moreover, the viscosity of the glue is low, and the place where water can penetrate can penetrate. When the water in the glue evaporates, the colloidal particles are firmly attached to the surface of the object, and aluminum-oxygen bonds are formed between the particles, which greatly improves the hardness and resistance of the material. impact performance.

In order to better illustrate the production process, as an example, a certain amount of alumina dispersion (with an alumina content of 20%) and the original glue solution is mixed in a mass ratio of 1:20 to form the glue solution, Stir for 1-2 hours, add the prepared glue into the plastic box, pass the aramid fiber with a linear density of 1680dtex through the plastic box, and wind it in parallel on the winding machine. The circumference of the winding machine drum is 2.4m, and the height of the drum is 1.2m. The rotation speed of the drum is 72 rpm; after winding, it is dried under infrared rays at a temperature of 79°C for 30 minutes, and the fiber cloth is taken off after being cut and rotated, and placed on a flat press at a temperature of 100°C. The pressure is 10Mpa, and the pressing is for 3 minutes to make a composite aramid non-weft fabric. Cut the finished aramid non-woven fabric into a 400mm*400mm square target piece, stack 28 layers and then conduct a target test. The test is carried out according to NIJ0101.06IIIA level. The cement depression is 5mm smaller than the untreated aramid non-woven fabric .

Experiments have proved that the composite aramid non-weft fabric produced by this special ratio and process has a significant protective effect. At the same time, the aramid body armor and helmet made of nano-alumina non-weft fabric are lighter in weight, which effectively improves the protection effect. The military's rapid response and defense capabilities.

The utility model enhances the hardness and impact resistance of the non-metallic bulletproof material through the addition and proportioning of the special process of glue aluminum oxide; it is manufactured by a special process, and reduces the damage of the overall bulletproof material under the condition of enhancing various bulletproof parameters. Load weight; the utility model has simple process, low cost and high safety factor.

The above are only preferred embodiments of the present utility model. It should be understood that the descriptions of the above embodiments are only used to help understand the method of the present utility model and its core idea, and are not intended to limit the protection scope of the present utility model. , Any modifications, equivalent replacements, etc. made within the ideas and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (3)

1. A kind of nano-alumina composite aramid fiber non-weft cloth, it is characterized in that, its structure comprises the stacking composition of multi-layer nano-alumina composite aramid fiber non-weft cloth; Each layer of nano-alumina composite aramid non-weft cloth is a single-material fiber cloth with the same size and shape as the other single-material fiber cloth, and the warp and latitude lines are perpendicular to each other. after composition. 2. A kind of manufacturing equipment of nano-alumina composite aramid non-weft fabric, comprising, electric drum, fiber drum, plastic box and drying device, one end of described electric drum is connected with one end of plastic box, the other end of plastic box It is connected with one end of the drying device, and the other end of the drying device is connected with one end of the fiber drum; It is characterized in that a waste heat recovery device is also arranged above the drying device. 3. The manufacturing equipment of nano-alumina composite aramid non-weft fabric according to claim 2, characterized in that a suction fan is arranged in the waste heat recovery device.