The role of plasticizers in plastic tarpaulins and folding and packaging

Plastic tarpaulin coated high-strength polyester waterproof cloth is based on high-strength polyester canvas, coated with polyvinyl chloride (PVC) paste resin and added with accelerator (synthetic vegetable ester), antifungal agent, anti-aging agent, Various chemical additives such as antistatic agent are plasticized at high temperature. It has the properties of waterproof, mildew proof, cold resistance, aging resistance, anti-static and so on; and the breaking strength, tear elongation and tearing strength are much better than traditional tarpaulins. It has a wide range of use and high intensity of use, and is a mainstream product in the modern tarpaulin market. PVC resin is a strong polar polymer, the intermolecular force is relatively large, and it requires high temperature. It can only be processed at about 190 degrees. Moreover, PVC is very unstable to heat, and high temperature will cause PVC to de-HCL reaction, which will degrade PVC. The PVC plasticizer inserts the molecules of the polar plasticizer into the molecular chain of the PVC resin, increases the intermolecular distance, makes the PVC molecular chain interact with the polar part of the plasticizer, and increases the flexibility of the molecular chain, even under cooling When the plasticizer remains in its original position, the intermolecular forces are reduced. Reduce the glass transition temperature, flow temperature and melting point of the polymer of PVC plastics. Improve the plasticity of PVC plastic, increase the flexibility and low temperature resistance of PVC plastic. In addition, PVC tarpaulin, like other tarpaulins, should avoid sharp objects from scratching the fabric when using it. After use, it should be unfolded and dried before being packaged and stored. . Depending on the local humidity and climate, it should be dried regularly. During the handling process, try to pay attention to the uniform force, to prevent damage to the outer packaging, and prevent the thermal insulation quilt from being damaged by brute force. Also, pay attention to fire prevention. Remember to tidy up the plastic tarpaulin when it is not in use, so as to avoid oxidation damage to the plastic tarpaulin caused by long-term sun and rain, and lose its use value and significance. First, spread out the front of the plastic tarpaulin flat, leaving two side ropes, and fold the two sides in the length direction to the longitudinal center line of the tarpaulin. Then, divide the folded sides into three equal parts, and fold them twice toward the center line. Fold both sides of the plastic tarpaulin in the width direction to the horizontal center line of the tarpaulin, and then fold them in half three times in a row to the middle, and then be firm. The folded outer dimension is about 1000mm×600mm×300mm. After that, use the reserved rope to tie it, tie the cross on both sides, tighten the tie tightly, and tuck the rope end tightly. After folding, the road emblem and plastic tarpaulin number on the tarpaulin should be completely and clearly exposed.
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