CN-122013522-A - Preparation method and application of polyester fiber fabric

Abstract

The invention discloses a preparation method and application of a polyester fiber fabric, wherein the preparation method is combined with a polyester fiber padding process, an acrylic acid-methyl acrylate prepolymer is mixed with polyurethane coating glue to prepare anti-condensation finishing liquid, and acrylic acid water-absorbent resin is generated through the anti-condensation finishing liquid and the polyester fiber after being immersed, so that the bonding strength of the acrylic acid water-absorbent resin and the polyester fiber, the content and the distribution uniformity of the acrylic acid water-absorbent resin in the polyester fiber are improved, the acrylic acid water-absorbent resin can absorb moisture in the environment to form hydrogel, the hydrogel after water absorption saturation has certain hydrostatic pressure resistance, the water absorption is not continued any more to play a role of 'water (gel) water resistance', the problem that the traditional outdoor tent fabric is easy to condensation in a low-temperature high-humidity environment is effectively solved, the comfort of a user is improved, and when the weather is clear, the hydrogel releases moisture and pores are reopened, so that the dynamic balance of water resistance and ventilation is realized.

Inventors

• Chen Wulei
• LIANG JIALE
• DING YUYANG
• WANG HAIFENG

Assignees

• 南通大学

Dates

Publication Date

20260512

Application Date

20260324

Claims (10)

1. 1. The preparation method of the polyester fiber fabric is characterized by comprising the following steps of: (1) Synthesizing acrylic acid-methyl acrylate prepolymer; (2) Uniformly mixing the acrylic acid-methyl acrylate prepolymer and polyurethane coating glue to prepare anti-condensation finishing liquid; (3) And (3) impregnating the polyester fiber fabric with the anti-dewing finishing liquid, and then rolling and baking to obtain the polyester fiber fabric with anti-dewing effect.
2. 2. The method for preparing the polyester fiber fabric according to claim 1, wherein the acrylic acid monomer in the step (1) is pre-neutralized with 10% -15% NaOH to make the neutralization degree 40% -65%.
3. 3. The method for preparing the polyester fiber fabric according to claim 2, wherein the molar ratio of acrylic acid to methyl acrylate in the step (1) is 3:1-5:1.
4. 4. The method for producing a polyester fiber fabric according to claim 2, wherein the initiator in the step (1) is potassium persulfate.
5. 5. The method for preparing the polyester fiber fabric according to claim 4, wherein the potassium persulfate is used in an amount of 0.6-0.8 wt% of the acrylic acid monomer.
6. 6. The method for preparing the polyester fiber fabric according to claim 2, wherein the step (1) adopts an aqueous phase reaction at a temperature of 70-80 ℃.
7. 7. The method for preparing the polyester fiber fabric according to claim 1, wherein the mass ratio of the acrylic acid-methyl acrylate prepolymer to the polyurethane coating glue in the step (2) is 2% -3%.
8. 8. The method for preparing the polyester fiber fabric according to claim 1, wherein the liquid carrying rate is 120% -150% when the polyester fiber fabric is impregnated with the anti-condensation finishing liquid in the step (3).
9. 9. The method for preparing the polyester fiber fabric according to claim 8, wherein the step (3) is performed by pre-baking for 3 min-5 min at 100-130 ℃ after rolling, and then continuously baking for 1 min-3 min at 150-190 ℃.
10. 10. Use of the polyester fiber fabric of claim 1 in an outdoor tent.

Description

Preparation method and application of polyester fiber fabric Technical Field The invention relates to a preparation method of outdoor tent fabric, in particular to a preparation method and application of polyester fiber fabric with dew prevention. Background The outdoor tent fabric is generally prepared from polyurethane PU or polyacrylate PA coating by adopting synthetic fiber filament fabric, and has higher hydrostatic pressure resistance (water resistance). However, the tent has the defect that the inside of the tent is not condensation-proof, when the tent is used in a large environment or camping at night, the water vapor generated by the environment or human breath is large, and the water vapor can be solidified and accumulated on the top layer of the tent and drop down to bring invariance to a user. This problem is a major pain point in the field of outdoor tents, and many efforts and attempts have been made by researchers for this purpose. Wherein, adding a super absorbent material with water absorption and water release properties into the PU coating is an effective method for solving the problem. The traditional water-absorbent resin material is usually solid polymer, and is compounded with fabric in a coating or lamination mode, resin particles are easy to agglomerate after water absorption, so that local coagulation is caused, the uniformity of the material is influenced, and in addition, after the resin absorbs water and swells, the binding force with fabric base material is reduced, and the durability of the tent is influenced. The patent CN114293379A provides a method for finishing fabrics by using water-absorbent resin through a padding process, which adopts a solution polymerization method to directly prepare super-absorbent resin and combine the fabrics in a padding baking process, so that the fabrics have water-blocking and waterproof effects, but the problems of overlarge resin consumption and poor permeability exist, the super-absorbent resin is directly prepared, the inside of the resin is crosslinked to form a three-dimensional network structure, the movement of a molecular chain segment is greatly limited, the viscosity of finishing liquid is high, the permeability of the resin is poor after the fabric is padded and finished, the resin is distributed on the surface of the fabric, the gel and the fabrics are obviously layered after the resin swells due to water absorption, the peeling strength of the resin and the fabrics is low, and the durability of materials is not facilitated; in addition, in order to enable the finished fabric to have a water blocking effect, the resin loaded on the fabric is very high in dosage, and the fabric is hard after baking, so that the flexibility of the material is greatly influenced, and the application of the material as a tent material is not facilitated. Disclosure of Invention The invention aims to provide a preparation method of the polyester fiber fabric with the anti-dewing function, and aims to prevent the problem of dewing in the use process of the outdoor tent fabric from giving uncomfortable feeling to a user. The preparation method of the polyester fiber fabric comprises the following steps: Synthesizing acrylic acid-methyl acrylate prepolymer; Uniformly mixing the acrylic acid-methyl acrylate prepolymer and polyurethane coating glue to prepare anti-condensation finishing liquid; And (3) impregnating the polyester fiber fabric with the anti-dewing finishing liquid, and then rolling and baking to obtain the polyester fiber fabric with anti-dewing effect. Furthermore, the method firstly prepares the prepolymer of the acrylic acid water-absorbent resin, the crosslinking of the resin is usually carried out at high temperature, the polymerization temperature of the micromolecular resin monomer is relatively low, and the reaction can be carried out at relatively low reaction temperature by adopting a mode of firstly preparing the resin prepolymer, so that the controllability of the reaction is effectively improved, the polymerization rate of the monomer is relatively moderate, the molecular weight of the polymerized resin polymer is relatively uniform, and the phenomenon of 'popping' caused by high temperature is avoided. In addition, the core of super absorbent resin is a three-dimensional network structure which can absorb water and expand, and small molecule resin monomers are difficult to polymerize into an effective network structure. The crosslinked resin polymer is difficult to be dissolved in water and processed. The resin prepolymer can be dissolved and dispersed in water (which is a linear long-chain macromolecule) and can be further crosslinked during baking, so that an effective network structure is formed between the surface of the polyester fiber and the fiber. The finishing liquid is prepared by mixing the polyurethane coating adhesive with the PU adhesive, the film forming performance of the coating adhesive is enhanced by compoun