300T full dull polyester pongee fabric PVC coated fabric for rain coat and garment fabric
See DetailsIn the vast universe of textile materials, polyester Oxford cloth has become an indispensable part of modern industry and daily life with its unique physical properties and wide application fields. Among them, its waterproof performance is particularly eye-catching, and the realization of this outstanding performance is mainly attributed to the coating treatment technology applied on its surface.
Polyester Oxford cloth, as a kind of synthetic fiber fabric, is mainly made of polyester (polyester fiber). Polyester fiber has become the preferred material for making Oxford cloth with its high strength, wear resistance, chemical corrosion resistance, good elasticity and easy cleaning. Polyester Oxford cloth not only retains the basic characteristics of polyester fiber, but also further improves its functionality through specific weaving and post-treatment processes, especially in waterproof performance.
The waterproof performance of polyester Oxford cloth is mainly due to its surface coating treatment. Coating technology, as a process of uniformly coating specific chemicals (usually polymers or resins) on the surface of fabrics, aims to improve or enhance certain properties of fabrics, such as waterproof, windproof, breathable, etc. The key to this technology lies in the selection of coating agents, coating methods and curing treatment after coating.
Coating agents are the core of coating technology, and their types and properties directly affect the waterproof effect of polyester oxford fabric. Common coating agents include polyurethane (PU), polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), modified acrylate, etc. These coating agents have their own characteristics. For example, PU coating has good elasticity and wear resistance, PVC coating has excellent waterproof and weather resistance, and PTFE coating is known for its extremely low surface energy and excellent air permeability.
When selecting a coating agent, it is necessary to comprehensively consider factors such as the purpose, cost, environmental protection requirements, and required performance of the fabric. For example, for outdoor equipment that requires high waterproofness and breathability, PTFE coating may be a better choice; while for more cost-sensitive fields, PU or modified acrylate coating is more economical and practical.
The coating method directly affects the uniformity and adhesion of the coating on the fabric surface. Common coating methods include blade coating, roller coating, dipping coating, and spraying. Blade coating and roller coating are suitable for large-area, flat fabrics; dip coating is suitable for complex-shaped fabrics that need to be fully coated; and spray coating is suitable for occasions with high requirements for coating thickness and uniformity.
When choosing a coating method, it is necessary to comprehensively consider factors such as the shape, size, thickness of the fabric, and the viscosity and fluidity of the coating agent. A reasonable coating method can not only improve the uniformity and adhesion of the coating, but also reduce production costs and energy consumption.
Curing treatment is the last step of coating technology and a key link to ensure the stability of coating performance. Curing treatment is usually carried out by heating or radiation, so that the polymer chains in the coating agent undergo cross-linking reactions to form a stable network structure. This process can not only improve the hardness and wear resistance of the coating, but also enhance the adhesion between the coating and the fabric.
The specific conditions of curing treatment (such as temperature, time, radiation intensity, etc.) need to be precisely controlled according to the type and performance of the coating agent. Improper curing treatment may lead to reduced coating performance, weakened adhesion or other quality problems.
Through coating technology, a continuous film is formed on the surface of polyester Oxford cloth, which can effectively block water penetration, thereby achieving a waterproof effect. At the same time, coating technology can also be combined with other functional additives, such as antibacterial agents, ultraviolet absorbers, etc., to further improve the performance of polyester Oxford fabric.
The waterproof performance of polyester Oxford fabric is usually measured by the waterproof grade. The higher the waterproof grade, the stronger the fabric's ability to resist water penetration. Common waterproof grade test methods include spray test, hydrostatic pressure test and dynamic water pressure test. These test methods can simulate different rainwater environments and pressure conditions to evaluate the waterproof performance of polyester Oxford fabric.
Although waterproof performance is one of the important characteristics of polyester Oxford fabric, breathability cannot be ignored. The quality of breathability directly affects the comfort and health of the wearer. In order to improve the breathability of polyester Oxford fabric, microporous coating technology or composite membrane technology can be used. Microporous coating technology allows air and moisture to pass through to a certain extent by forming a tiny pore structure in the coating; while composite membrane technology combines a layer of microporous film with the fabric, which not only maintains waterproof performance but also improves breathability.
Durability and environmental protection are two important aspects that need to be weighed during the coating process of polyester Oxford fabric. Durability requires the coating to have good wear resistance, weather resistance and chemical corrosion resistance; while environmental protection requires the coating agent to be non-toxic, harmless, degradable or easy to recycle. To achieve this goal, it is necessary to select a high-performance environmentally friendly coating agent and optimize the coating process and curing conditions.
Polyester Oxford cloth has been widely used in many fields due to its excellent waterproof performance. In the field of outdoor adventure, polyester Oxford cloth is used to make tents, raincoats, waterproof backpacks and other equipment; in the field of construction, it is used to make waterproof curtains, awnings, etc.; in the field of transportation, it is used to make car tarpaulins, marine canvas, etc. These applications not only demonstrate the advantages of polyester Oxford cloth in waterproof performance, but also reflect the market demand for high-quality and multifunctional textile materials.
With the continuous advancement of science and technology and the increasing awareness of environmental protection, the coating technology of polyester Oxford cloth will continue to upgrade and innovate. In the future, we can expect more environmentally friendly, efficient and multifunctional coating technology to bring polyester Oxford cloth a wider range of applications and more outstanding performance.
The waterproof performance of polyester Oxford cloth is mainly due to its surface coating treatment. By selecting the right coating agent, optimizing the coating method and curing conditions, we can achieve comprehensive improvements in the waterproof, windproof, breathable and other properties of polyester Oxford fabric. The continuous innovation and application of this technology will provide strong support for the development of polyester Oxford fabric in more fields.