Modified PVC pellet and preparation method thereof
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A PVC resin and modification technology, applied in building thermal insulation materials, building components, buildings, etc., can solve other problems such as damage to performance and not very obvious effects, and achieve the improvement of performance, compatibility, and high temperature resistance. Effect
Inactive Publication Date: 2018-12-28
界首永恩机电科技有限公司
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Silica airgel can be used as a filler in the processing of organic materials. However, although direct use has a c
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[0032] Example 1
[0033] A modified PVC pellet prepared by weight using the following raw materials:
[0034] 55 parts of PVC resin, 3.8 parts of plasticizer, 0.8 parts of anti-aging agent, 13 parts of modified silica aerogel;
[0035] The method for preparing the modified silica aerogel includes the following steps:
[0036] (1) Add attapulgite to 3-5 times its weight in a 5% nitric acid solution soaked for 10-15min, then rinsed with deionized water for 3-4 times, and then treated at 425℃ for 2.5h, Add the treated attapulgite into deionized water 4 times its weight, and stir for 18-20 minutes to disperse the attapulgite to form a suspension;
[0037] (2) Prepare modified asphalt, crush the asphalt, pass a 200-mesh sieve, mix the asphalt with 1% oxalic acid solution by weight in a ratio of 1:2, and then add 2.5% cetyl triacetate by weight of asphalt Methyl ammonium bromide, stirred at a speed of 480-500r / min for 22 minutes, then heated to 124°C, and stirred at a speed of 1350r / min fo...
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[0048] Example 2
[0049] A modified PVC pellet prepared by weight using the following raw materials:
[0050] 55 parts of PVC resin, 4.2 parts of plasticizer, 0.9 parts of anti-aging agent, 12 parts of modified silica aerogel.
Example Embodiment
[0051] Example 3
[0052] A modified PVC pellet prepared by weight using the following raw materials:
[0053] 58 parts of PVC resin, 4.5 parts of plasticizer, 0.9 parts of anti-aging agent, 14 parts of modified silica aerogel;
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Abstract
The invention relates to a modified PVC pellet and a preparation method of the modified PVC pellet. The modified PVC pellet is prepared from the following raw materials by weight: 50-60 parts of PVC resin, 3-5 parts of plasticizer, 0.8-1 part of antiager, and 12-15 parts of modified silicon dioxide aerogel. The plasticizer and the antiager are added in the preparation process of the PVC pellet inthe application so as to further improve the flame retardant efficiency and the high temperature resistance effect of the PVC; the modified silicon dioxide aerogel is added in the raw materials in theapplication, and the silicon dioxide aerogel is modified after being added, so that the compatibility of the silicon dioxide aerogel and the PVC resin material is obviously improved, and the flame retardance and the high temperature resistance property of the material are improved.
Description
technical field [0001] The invention belongs to the field of environmentally friendly new materials, and in particular relates to a modified PVC pellet and a preparation method thereof. Background technique [0002] Polyvinyl chloride can be made by substitution reaction of ethylene, chlorine and catalyst. Due to its fire resistance and heat resistance, PVC is widely used in various products in various industries: wire sheath, optical fiber sheath, shoes, handbags, bags, accessories, signs and billboards, building decoration products, door curtains, rolling doors , Auxiliary medical supplies, gloves, some food fresh-keeping paper, some fashions, etc. However, PVC needs to be added with various fillers to improve the performance of the resin. [0003] Airgel, also known as xerogel. When most of the solvent is removed from the gel, so that the liquid content in the gel is much less than the solid content, or the space network structure of the gel is filled with gas, and the ...
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