Kevlar wear-resistant fabric production and application

First, the common types of outdoor sports fabric yarn introduction:

1, Polyester: China is commonly known as "Dacron." Polyester yarn fabrics will be flatter and stiffer after being shaped, so they can still last forever after being worn many times and washed several times. Widely used in the garment industry or industrial products. Impact strength is 4 times higher than nylon and 20 times higher than viscose. Abrasion resistance is second only to nylon with the best abrasion resistance, and it is better than other natural fibers and synthetic fibers. At the same time, it is not easily deformed, corrosion-resistant, easy to handle and has good elasticity. The price is also relatively cheap.

2 nylon English name Polyamide (referred to as PA), the basic composition of the material is through the amide bond - [NHCO] - aliphatic polyamide connected together. Polyamide is mainly used for synthetic fibers, its most prominent advantage is that the wear resistance is higher than all other fibers, 10 times higher than cotton abrasion resistance, 20 times higher than wool, in the blended fabric slightly add some polyamide fiber, can Greatly improve its wear resistance; When stretched to 3-6%, the elastic recovery rate can reach 100%; can withstand tens of thousands of times without breaking. The strength of polyamide fiber is 1-2 times higher than cotton, 4-5 times higher than wool, and 3 times higher than viscose fiber. However, the polyamide fiber is poor in heat resistance and light resistance, and has a long and easy-to-discolor light time. The melting point is generally 220 to 260 degrees Celsius, and its retention is not good. The fabric is not as good as polyester.

3, The biggest feature of glass fiber is its high tensile strength. The tensile strength is 6.3 to 6.9 g/d in the standard state and 5.4 to 5.8 g/d in the wet state. Good heat resistance, no effect on the strength when the temperature reaches 300°C. Has excellent electrical insulation, is a high-grade electrical insulation material, but also for thermal insulation materials and fire shielding materials. It is generally only corroded by concentrated alkali, hydrofluoric acid and concentrated phosphoric acid. Glass fiber is higher in temperature resistance than organic fiber, non-flammable, anti-corrosion, heat insulation, sound insulation, high tensile strength, and good electrical insulation. However, it is brittle and has poor wear resistance.

4, Kevlar. Low density, high strength, good toughness, high temperature resistance, easy processing and molding, its strength is 6 times that of the same quality steel, but the density is only one-fifth that of steel; modulus is 3 times that of steel wire; Toughness is 2 times that of steel wire. Replace “nylon” and “glass fiber” with “Kevlar” material. Under the same conditions, its protection capacity can be at least doubled, and it is very flexible and comfortable to wear. *** made with this material only 2-3 kg in weight. Insulation and anti-aging properties are good. It is resistant to high temperatures and does not decompose or melt in the environment of 560 degrees Celsius. It can be used in the environment range of minus 196 degrees Celsius to 200 degrees Celsius for 50 years. Acid and alkali resistance is also very strong.

Second, industry trends and market analysis:

As we all know, today's life is getting better and better. People have also changed from the previous pursuit of food and clothing into the current leisure and sports, and the quality requirements of sports are getting higher and higher. This also gave birth to the development of this industry. That is, from the very beginning, to physical properties, to both physical and comfort, and then to strong physical properties and strong comfort. This requires the product to be lighter, thinner, more comfortable and easier to carry. The most important thing is the bulk of the product—fabric. For example, a team requires camping in a deep mountain. The weight of their equipment is directly related to the distance of the trekking; the equipment must also be waterproof, wear-resistant, scratch-resistant, and fatigue-resistant. Because the environment encountered is unknown, it must be the best. Good preparation; Ambient temperature is also an important factor, and the degree of attenuation of physical properties in a low temperature environment directly determines the physical properties and comfort level in a low temperature environment. Therefore, the requirements of the market for fabrics have become increasingly stringent and the use of such products has become more widespread.

Third, the advantages of kevlar wear-resistant cloth:

Because of the use of high-strength kevlar yarns in the fabric, the direct benefit is to increase its overall physical properties. Wear resistance, cut resistance, puncture resistance, tensile strength will be a qualitative leap. In the face of harsh conditions: not afraid of branches, talc scraping equipment or clothing; the overall ease of use of the equipment is greatly increased, the use of 300GSM fabric can be more than the use of 20 ounces (about 580GSM) or 560GSM nylon cloth even greater intensity; in a low temperature environment Substance can be well maintained and does not decay well. High strength and toughness at the same time, all aspects to ensure the safety of the journey.

Fourth, the disadvantages of kevlar wear-resistant cloth:

Because of its high toughness, it is easier to knot and form small joints when weaving. The coloration of this yarn is very poor, so the color fastness of the general dyeing is very poor, only 2.5 to 3 levels. Basically, only the other fibers of the base color can be dyed, and the kevlar yarn can only be slightly colored.