Children's toy water canvas, also known as water-painted graffiti canvas, is made of polyester and cotton on the front, spun nylon on the back, and the brush is
Plastic products, polyester fiber, commonly known as polyester, is a synthetic fiber obtained by spinning polyester condensed from organic dibasic acid and diol, referred to as PET fiber, which belongs to polymer compounds. The biggest advantages of polyester fiber are good wrinkle resistance and shape retention, high strength and elastic recovery.
Nylon is durable, wrinkle-resistant, non-ironing and non-sticky. This product has a wide range of uses. It is a good material to replace steel, iron, copper and other metals with plastic, and it is an important engineering plastic. Cast nylon widely replaces the wear-resistant parts of mechanical equipment, and copper and alloy are used as the wear-resistant parts of equipment.
It is suitable for manufacturing wear-resistant parts, transmission structural parts, household electrical appliances, automobile manufacturing parts, anti-screw mechanical parts, chemical mechanical parts and chemical equipment.
Therefore, the principle applied to water canvas is that where the water brush strokes go, the colored painting handwriting will appear immediately. With the evaporation of the watermark, the handwriting disappears, and the canvas is restored to its original appearance and can be reused.
Extended data
1, improve high-temperature stability, improve high-temperature stability Because of the three-dimensional distribution of polyester fiber monofilament, it has strong adsorption with asphalt and is not entangled, it can absorb too much free asphalt and increase the viscosity and cohesion of asphalt.
At the same time, due to the criss-crossing reinforcement and bridging, the fluidity of asphalt is reduced, the lateral displacement or flow of aggregate is limited, the high-temperature stability is effectively improved, and the stability of fiber asphalt concrete is greatly improved.
2. The adsorption of fiber on asphalt improves the low-temperature crack resistance of asphalt concrete, thus improving the optimal asphalt content of asphalt concrete. The high asphalt content makes the fiber asphalt mixture maintain flexibility and high tensile strength at the low temperature of -40℃, effectively resist shrinkage stress, enhance the low-temperature crack resistance of the mixture, reduce the occurrence of temperature shrinkage cracks and prevent the development of reflection cracks.
3. Improve the anti-fatigue ability. Under the action of external temperature environment, asphalt pavement bears repeated wheel loads. When the repeated load exceeds a certain number of times, the stress produced by the pavement under the load will exceed the structural resistance with reduced strength.
Streaks appear on the pavement, leading to fatigue fracture. After adding polyester fiber, the uniform distribution of fiber monofilaments in the mixture increases its stiffness modulus and improves the fatigue resistance of asphalt concrete.
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