High-hydroscopicity polyvinyl chloride (PVC) material and preparation method
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A high water absorption, granular material technology, applied in the field of plastic products, can solve problems such as poor water absorption, and achieve the effect of good mechanical properties and good water absorption
Active Publication Date: 2012-07-18
ZHEJIANG HONGSHENGYUAN CAR ACCESSORIES
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But the water absorption of PVC material in the prior art is not good
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Embodiment 1
[0024] First, stir PVC SG-3 90Kg, plasticizer DOP 75Kg, composite stabilizer 4Kg, antioxidant 1010 0.3Kg, third monomer TMPTMA 3Kg at a speed of 900 rpm until the temperature of the mixture is 50-56 ℃;
[0025] Then, add initiator DCP 0.2Kg, carboxymethyl cellulose 35Kg and stir at a speed of 900 rpm for 5-6 minutes, and stop stirring when the temperature of the mixture reaches 90-92°C;
[0026] Finally, extrude and granulate the above mixture in a twin-screw extruder, and the temperature of each section of the twin-screw extruder is 1#130°C, 2#140°C, 3#160°C, 4#165°C, 5#160°C , 6# 160°C, machine head 150°C, the PVC granular material with high water absorption performance is obtained.
Embodiment 2
[0028] Same as the preparation steps in Example 1, with the following differences:
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Abstract
The invention provides a high-hydroscopicity polyvinyl chloride (PVC) material and a preparation method. The material is prepared by the following raw materials according to parts by weight: PVC SG- 3: 90-100, carboxymethylcellulose: 35-46, initiator dibasic calcium phosphate (DCP): 0.2-0.4, a third monomer trimethylopropane trimethacrylate (TMPTMA): 3-5, an antioxygen 1010: 0.3-0.5, a plasticizer Di N octyl phthalate (DOP): 75-86, and a compound stabilizer: 4-6. The preparation method for the PVC granular material includes the following steps: the PVC SG-3, the third monomer TMPTMA, the antioxygen 1010, the plasticizer DOP and the compound stabilizer are placed in a mixer to be mixed until mixed material temperature is 50-56 DEG C, an initiator and carboxymethylcellulose are then added to be mixed and mixing does not stop until mixed material temperature is 90-92 DEG C. Finally, the mixed material is placed in a hopper and extruded and granulated through a double-screw extruder, and the high-hydroscopicity PVC granular material is obtained.
Description
technical field [0001] The invention belongs to the technical field of plastic products, and in particular relates to a high water-absorbing PVC material. The invention also relates to a preparation method of the PVC material. Background technique [0002] PVC material is polyvinyl chloride, which is one of the plastic products with the largest output in the world. It is cheap and widely used. The polyvinyl chloride resin is white or light yellow powder. Different additives can be added according to different uses, and PVC plastics can exhibit different physical and mechanical properties. Adding an appropriate amount of plasticizer to polyvinyl chloride resin can make a variety of hard, soft and transparent products. Polyvinyl chloride plastic has good mechanical properties, wear resistance, and chemical corrosion resistance, and can be made into a variety of daily necessities. It is a general-purpose plastic with the most cost-effective performance. But the water absorpt...
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