The scientific name of polyimide fiber is the general name of polyamide fiber produced in China.It is called nylon internationally.High strength, wear resistance, good flexibility. Can be used for pure and blended fabrics and knitwear.The main varieties are polyamide 6 and polyamide 66, which have similar physical properties.Polyamide has better hygroscopicity and dyeing properties than polyester, is alkali resistant but not acid resistant, and its fiber strength will decrease when exposed to sunlight for a long time.Polyamide has a thermosetting property that preserves the bending deformation formed when heated.
Short polyamide filament can be made of stretch yarn, silk and wool and acrylic blended yarn, in order to improve its strength and elasticity. In addition to the application in clothing and adornment, also widely used in industry such as tyre cord, belts, hoses, ropes, nets, tires, parachute, etc.
Nylon fiber is the Chinese name of synthetic fiber nylon. It is also translated as nylon or nylon. It is also known as polyamide fibre or polyamide fibre.Because jinzhou chemical fibre factory is the first factory in China to synthesize polyamide fibre, it is called "jinlun fibre".It is the world's first synthetic fiber variety, because of good performance, rich raw material resources, has been widely used.
Nylon fabric was known for its excellent abrasion resistance, it not only is the best choice for down jacket, mountaineering wear cloth, and often with other fibre blended or mixed, in order to improve the fastness and strength of the fabric.
Strong, wear - resistant, the first of all fiber.Its wear resistance is 10 times that of cotton fiber, 10 times that of dry viscose fiber and 140 times that of wet fiber.Therefore, its durability is excellent.
The elastic and elastic recovery of polyamide fabric is very good, but it is easy to deform under small external force, so the fabric is easy to wrinkle and fold in the process of wearing.
Poor ventilation, easy to produce static electricity.
The hygroscopicity of polyamide fabric is a good variety in the synthetic fiber fabric, so the clothes made of polyamide fabric are more comfortable to wear than polyester clothing.
Good corrosion resistance and corrosion resistance.
Heat resistant light fastness is not good enough, ironing temperature should be controlled under 140 ℃.Care must be paid to the condition of washing and maintenance during wearing to avoid damaging the fabric.
Polyamide fabric is a lightweight fabric, which is only listed after polypropylene and acrylic fabric in the synthetic fiber fabric. Therefore, it is suitable for making mountaineering clothing and winter clothing.
The broad variety of polyamide
There are many kinds of polyamide fiber, including polyamide 6, polyamide 66, polyamide 11 and polyamide 610, among which the most important are polyamide 66 and polyamide 6.The nature of the various kinds of nylon is not exactly the same, has a common feature is the macromolecular main chain amide chain, can adsorption of water molecules, crystalline structure can be formed, wear-resisting performance is very good, with fibre are fine clothes.
Polyamide fiber fabrics can be divided into pure spinning, blending and interleaving three categories, each of which contains many varieties.
1.Various fabrics woven from polyamide silk, such as polyamide taffeta, polyamide crepe, etc.It is made of polyamide filament yarn, so it has the characteristics of smooth hand, strong durability and moderate price.Polyamide taffeta is used for light clothing, down jackets or raincoat fabrics, while polyamide crepe is suitable for summer dresses, spring and autumn jackets.
2.Polyamide blends and interweaves made from polyamide filament or short fibers mixed with other fibers or interweaved with the characteristics and advantages of each fiber.Such as glue/kam gabardine, USES 15% of polyamide fiber and viscose blended yarn made of 85%, has the end spacing twice than the weft density, body quality of a material is solid, tough and durable, the characteristics of faults is the difference in elasticity, crease easily, wet strength drops, easy sagging during wear.In addition, there are also adhesive/jin vaseline, adhesive/jin/wool tweed varieties, are some commonly used fabrics.
The most common polyamide products on the market are polyamide 6 and polyamide 66.
Polycaprolactam 6: the full name is polycaprolactam fiber, by caprolactam polymerization.
Nylon 66: the full name is polyadiptyl adipase adipase fiber, which is composed of adipic acid and adipase.
The common characteristics of polyamide 6 and polyamide 66 are: poor light resistance, low intensity and yellowing color under long-term sunlight and ultraviolet radiation.Its thermal performance is not good enough, also under the 150 ℃, after five hours namely yellow, strength and extension significantly to fall, shrinkage rate increase.Nylon 6, 66 filament has good low temperature resistance, under 70 ℃ below zero, its resilience change little.Its dc conductivity is very low, and it is easy to generate static electricity due to friction during processing. Its conductivity increases with the increase of moisture absorption and increases with the increase of humidity in accordance with the exponential function rule.Polyamide 6, 66 filament has strong microbial resistance ability, and its microbial resistance ability in silt water or alkali is second only to that of polyvinyl chloride.In terms of chemical properties, nylon 6 and 66 filament yarn have the function of alkali resistance and reducing agent, but have poor performance in acid resistance and oxidant resistance.