Acrylic fibre topic everything related to that

Acrylic fibre

1. Acrylic Fibre Acrylic is a synthetic polymer fibre made from a combination of chemicals, primarily acrylonitrile and a few other monomers. Acrylic fibres are known for their softness, lightweight, durability, and ability to retain their shape and color after washing. 85% acrylonitrile monomer present in the acrylic fibre . Comonomers are vinyl acetate or methyl acrylate.

2. Properties of acrylic fibre: Density 1.17-1.19 g/cm³ Melting Point 160-250°C Tensile Strength 0.7-1.6 Gpa Elastic Modulus 2.6-3.6 Gpa Elongation at Break 10-50% Moisture Regain 0.2-0.6% Flammability Melts and drips Abrasion Resistance Moderate UV Resistance Good Thermal Conductivity Low Electrical Conductivity Low

3. Property which makes acrylic suitable for carpet Durability : Acrylic fibers are durable and don't lose their color or quality after washing or stepping on them. Wool-like : Acrylic fibers are soft and flexible, and have a similar feel to wool. They are also springy and have a luxurious hand. Resistant to stains and soiling : Acrylic fibers resist stains, soiling, static, and mildew. Resistant to moths : Unlike wool, acrylic fibers are not susceptible to moth damage. Sunlight resistant : Acrylic colors are bright and resist fading in sunlight. Thermal insulation : Acrylic fibers have good thermal insulation. Reversibility : Acrylic fibers have high reversibility. Cost : Acrylic fibers are less expensive than wool.

4. Flow Chart Polymerization Filtration Spinning Drawing/Heat Crimping Cutting

5. 1.Polymerization : The first step in acrylic fibre manufacturing is polymerization, which is the process of combining two or more chemical reactants in a reaction vessel, under specific conditions of temperature, pressure, and time.ls to create the acrylic polymer. In this process we heat the reactants in a reaction vessel, under specific conditions of temperature, pressure, and time. 2.Filtration : Once the polymerization is complete, the mixture is filtered to remove any impurities or unreacted chemicals. 3.Spinning : After filtration, the polymer is spun into fibres using a process called spinning. The polymer is melted and extruded through a spinneret, which is a metal plate with many small holes. The molten polymer is forced through the holes, creating long, thin strands of acrylic fibre .

6. 4.Drawing/Heat : The spun fibres are then stretched or drawn, which aligns the polymer chains and increases the strength and durability of the fibres . Drawing can be done either by mechanical means, such as using rollers or pulling devices, or by heating the fibres to a specific temperature and then stretching them. 5.Crimping : The drawn fibres are then crimped to create a more natural, fluffy texture. Crimping is done by adding a twist to the fibres . This step makes acrylic fibre more comfortable feel making them ideal for use in clothing & other textile. 6.Cutting : Finally, the crimped fibres are cut to the desired length, typically ranging from a few mm to cm. The length of the fibres determines their end use, with longer fibres used for heavier textiles and shorter fibres used for lighter fabrics.

7. Uses Clothing and textiles : Acrylic fiber is used with wool to manufacture sweaters. Besides, acrylic fibres are used for making knitwears , sportswear, blankets, flocked velvets and simulated fur fabrics, dress materials and suitings , wigs, childreen’s wear, underwear, swim-suits, pullovers, draperies etc. 2.Home furnishings : They are used in the production of a variety of home furnishing products like carpets, rugs, and upholstery.

8. 3.Industrial textiles : These fibres are used in a range of industrial applications due to their resistance to moisture, chemicals, and UV radiation. They are used in products like awnings, sails, and outdoor gear like tents, backpacks, and sleeping bags.