Formula and preparation method of high-speed extruded PVC coated yarn color master batch

Abstract

The invention discloses a formula and a preparation method of a high-speed extruded PVC coated yarn color master batch. The color master batch comprises the following raw materials in parts by mass: 130-180 parts of polyvinyl chloride, 4-10 parts of a heat stabilizer, 0.5-3 parts of a light stabilizer, 7-15 parts of a main filler, 7-15 parts of an auxiliary filler, 1-4 parts of a dispersant, 0.5-4parts of a lubricant, 3-15 parts of a pigment and 13-23 parts of a plasticizer. The wire drawing speed of the PVC color master batch provided by the invention can reach 400 yards or above, meanwhile,the phenomena of color spots, non-uniform intermittent coating, eccentricity of coated wires and the like can be avoided, and the manufacturing cost of the color master batch can be greatly saved.

Description

technical field [0001] The invention relates to the technical field of PVC-coated silk used in building sunshades, in particular to a high-speed extrusion PVC-coated silk color masterbatch formula and a preparation method thereof. Background technique [0002] The PVC (polyvinyl chloride) covered silk fabric used for building sunshade is woven from PVC covered silk. The PVC coated wire is uniformly coated with PVC color masterbatch (also known as PVC colorant) on the surface of polyurethane wire or glass fiber through a wire drawing machine. There are two types of PVC masterbatches for coating. One is high-speed extrusion PVC masterbatches, which are generally composed of carriers (PVC powder), plasticizers, stabilizers, lubricants, toners, and functional additives. (such as: flame retardant, antibacterial agent), which is characterized by low kinematic viscosity and low dynamic viscosity after high temperature vitrification, and relatively high adhesion. The PVC masterbatc...

AI Technical Summary

Problems solved by technology

[0003] There are problems in the existing high-speed extrusion PVC masterbatch: 1. High cost: the effective components in its formula are relatively expensive, resulting in high unit price per unit volume; 2. Relatively light: the proportion of effective components in its formula is relatively high Lightweight, the same thickness of the covering wire, the weight of the fixed length is low, and the air pressure effect is poor after it is made into a finished curtain; 3. Eccentricity is easy to occur: due to the low dynamic viscosity, the outer layer of the high-temperature vitrified PVC color material covering wire, in the Before cooling, it sags due to its own weight, resulting in eccentricity

[0004] There are problems in the existing low-speed extrusion PVC masterbatch: 1. Low production efficiency: due to the relatively high kinematic viscosity and dynamic viscosity after vitrification, the coating speed cannot be fast, otherwise incomplete coating will easily occur. Interstitial fracture of the coating; 2. Stains are prone to appear: high kinematic viscosity makes it difficult to mix the toner evenly, and the effect of adding a dispersant is relatively poor, which is easy to cause color blocks; 3. Occupies a lot of production sites: due to the slow production speed , to achieve the same output at the same time, more wire drawing machines are needed for production, and the wire drawing machines occupy more plant area, and generally need more than 3 times the production site of the "high extrusion formula" to meet the requirements; 4. Other high production costs: including The overlay speed is slow, and a large number of equipment is required, resulting in more labor, more energy consumption, and more depreciation of equipment (factory buildings)

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