Toughened PVC (polyvinyl chloride) resin with high apparent density and preparation method thereof
A technology of PVC resin and apparent density, which is applied in the field of polymer compound composition, toughened PVC resin and its preparation, can solve the problems such as the difficulty of effectively increasing the apparent density of PVC resin, and achieves increased particle density, Improved powder properties and easy drying
Active Publication Date: 2013-06-12
CHINA PETROLEUM & CHEM CORP
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
It is difficult to effectively improve the apparent density of PVC resin
Method used
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Embodiment 1～ Embodiment 11
[0083] According to the preparation method of the present invention, the toughened PVC resin of high apparent density of the present invention is prepared
[0084] Including the following steps:
[0085] ①. Feeding and heating
[0086] Put the formulated amount of PVC resin slurry and deionized water into the flocculation kettle, and heat up under stirring;
[0087] ②. Toughened latex anti-aging treatment
[0088] Accurately weigh the liquid anti-aging agent according to the proposed formula, add it to the toughened latex accurately measured according to the proposed formula, stir for 3 to 5 minutes for anti-aging treatment, and set aside;
[0089] ③. Add toughening latex to the system
[0090] When the temperature of the slurry in the flocculation tank in step ① rises to 70-80±5°C, under stirring, slowly add the toughened latex that has been treated in step ② for anti-aging, stir well, and set aside;
[0091] ④. Toughened latex flocculation
[0092] In step ③, into the s...
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Abstract
The invention relates to a toughened PVC (polyvinyl chloride) resin with high apparent density and a preparation method thereof, which belong to a high-molecular compound composition and particularly relate to improvement of the apparent density performance index of PVC resin. The PVC resin is modified with water-based toughening latex. The toughened PVC resin is characterized by being prepared with raw materials in parts by weight: 100 parts of PVC resin, 1-13 parts of toughening latex counted by solid content, 1-10 parts of release agent emulsion counted by solid content, 5-500 parts of flocculant solution counted by solution weight, 1-2 parts of liquid anti-aging agent counted by the weight percentage of the toughening latex, and 60-400 parts of deionized water. The invention provides the toughened PVC resin with high apparent density, wherein toughened and modified rubber particles are uniformly dispersed in the PVC resin. The invention also provides a preparation method of the toughened PVC resin with high apparent density with the advantages that the equipment is simple, the operation is convenient, the resin can be dried easily, and the production cost is low. The apparent density of the toughened PVC resin with different rubber contents can be more than or equal to 0.40g / mL.
Description
technical field [0001] The invention is a toughened PVC resin with high apparent density and a preparation method thereof. The invention belongs to a polymer compound composition, and particularly relates to the improvement of the performance index of the apparent density of PVC resin. Background technique [0002] The apparent density is the mass of PVC powder per unit volume, and the apparent density of the resin has an effect on the extrusion speed and melting temperature of the extruder. As an important indicator of PVC resin, the apparent density is directly related to the processability of the resin. The conveying of raw materials by the screw is calculated by volume, and the higher the apparent density, the larger the feeding volume, the faster the extrusion speed, and the higher the production efficiency. High apparent density resin can also reduce the air bubbles of extruded products and improve the surface gloss of products. High apparent density is a very promi...
Claims
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IPC IPC(8): C08L27/06C08L9/04C08L51/00C08K3/24C08K3/30
Inventor 张桦王晶苏建华张磊张强盛梅
Owner CHINA PETROLEUM & CHEM CORP