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A technology for fabrics and suits, which is applied in the field of preparation of waterproof suit fabrics, can solve the problems of destroying the molecular structure of water-based polyurethane, affecting the performance of the coating, and decreasing the mechanical strength, and achieves the effects of easy control, improved waterproofness and less side reactions.
Inactive Publication Date: 2020-06-19
安徽弋尚纺织科技有限公司
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Problems solved by technology
Although the addition of a hydrophilic chain extender solves the emulsification problem of water-based polyurethane in water, it is easy to make the polyurethane coating after drying and filming be infiltrated by water and swell. At the same time, some ester bonds contained in water-based polyurethane are also easily hydrolyzed and bond The fracture destroys the molecular structure inside the water-based polyurethane, and the mechanical strength decreases, which affects the performance of the entire coating
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Embodiment 1
[0040] Preparation of polyether diols:
[0041] Add 50g of phthalic anhydride, 25g of 1,3-propanediol and 1g of DMC catalyst into the reaction flask, raise the temperature to 100°C for dehydration under reduced pressure for 0.5h, then replace with nitrogen for 3 times, then add 30g of propylene oxide after raising the temperature to 120°C , reacted for 6h, and removed small molecular impurities under reduced pressure to obtain polyether diol.
Embodiment 2
[0043] Preparation of fluorine-containing silicone oil:
[0044] Under nitrogen protection, add 1g of ethylenediamine and 0.5g of deionized water into the reaction flask, heat to 50-60°C and stir for 0.5h, then add 100g of trifluoropropylmethylcyclotrisiloxane (D3F) and heat up to 110°C, react for 6 hours, and remove water and ethylenediamine under reduced pressure to obtain fluorine-containing silicone oil.
Embodiment 3
[0046] Preparation of modified polyurethane emulsion:
[0047] A1. Under the protection of nitrogen, add 50g of polyether diol into the reaction flask, heat to 60°C, and add 80g of isophorone diisocyanate dropwise, then raise the temperature to 90°C, and keep it warm for 2 hours to obtain Polymer 1;
[0048] A2. Under nitrogen protection, add 5g of dimethylolpropionic acid, 5g of 1,4-butanediol and 1g of stannous octoate to Polymer 1, raise the temperature to 75°C, and keep warm for 5 hours to obtain Polymer 2;
[0049] A3. Under the protection of nitrogen, the temperature of Polymer 2 was lowered to 60°C, and 15g of fluorine-containing silicone oil was added to the reaction bottle, reacted for 3 hours, and then 10g of acetone was added to obtain Polymer 3;
[0050] A4. Under the protection of nitrogen, lower the temperature of Polymer 3 to 35°C, add 5g of triethylamine, stir for 0.5h, then dropwise add 200g of deionized water, and continue stirring for 2h to obtain modified p...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
The invention discloses a preparation method of a waterproof suit fabric, which specifically comprises the following steps: S1, blending wool fibers, cotton fibers and pearl fibers to prepare a surface fabric; S2, uniformly mixing a modified polyurethane emulsion, a thickening agent, ammonia water and a cross-linking agent to prepare a fabric coating agent; S3, uniformly coating the surface fabricwith the fabric coating agent, and drying the fabric coating agent; S4, placing the base cloth in a rubber roller, and coating the surface of the base cloth an adhesive; S5, attaching the waterproofsurface fabric to the base cloth coated with the adhesive, and performing hot pressing on the waterproof surface fabric and the base cloth by using a pressing machine; and S6, cooling, trimming and rolling the hot-pressed fabric to obtain the waterproof suit fabric. The fabric coating agent coats the surface fabric of the suit, and a polyurethane film with stronger adhesive force coats the fabricsurface of the suit fabric, so that the surface fabric of the suit has certain waterproof property and mechanical property.
Description
technical field [0001] The invention relates to the technical field of garment manufacturing, in particular to a preparation method of a waterproof suit fabric. Background technique [0002] As a common clothing for modern formal social occasions, suits are mostly made of high-quality blended fabrics. Natural fabrics such as pure cotton, pure wool, pure silk, and pure linen are rarely used as high-end clothing materials due to their shortcomings such as easy wrinkling and deformation. With the increase in demand for suits, suits also need to adapt to different environments and improve certain performances, such as waterproof, moisture permeability, and wear resistance. [0003] Fabric coating agent refers to a multi-functional coated fabric obtained by coating a layer of polymer with strong adhesion on the surface of knitted fabrics, polyester and other fabrics, and undergoing certain chemical processes. The fabric forms a skeleton and provides strength, while the coating p...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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