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A kind of toughened type PVC resin and preparation method thereof

A PVC resin and toughening technology, which is applied in the field of PVC modification, can solve the problems of reducing the amount of toughening rubber and blending links, the difficulty of uniform dispersion of toughened rubber and PVC resin, and reducing production costs, so as to reduce blending link, impact toughness improvement, and the effect of reducing production cost

Active Publication Date: 2011-12-28
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a kind of toughened PVC resin and its preparation method, solve the problem that toughened rubber is difficult to disperse evenly when blending with PVC resin, reduce the amount of toughened rubber and the blending process, reduce production cost

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  • A kind of toughened type PVC resin and preparation method thereof
  • A kind of toughened type PVC resin and preparation method thereof
  • A kind of toughened type PVC resin and preparation method thereof

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Embodiment Construction

[0030] Below in conjunction with embodiment, the present invention is described further, but does not limit the present invention thereby.

[0031] Toughened PVC resin preparation method and process formula are as follows:

[0032] Table 1 Example basic formula and performance (mass parts)

[0033]

[0034] Add required amount of PVC and deionized water into the constant temperature container, start stirring (stirring speed is 350 minutes / rotation) and heat up. When the temperature of the system reaches 80±5℃, add the toughened latex, stir evenly and slowly add the flocculant solution, stir for 2 to 5 minutes until the system flocculates uniformly and completely, stop stirring, discharge, centrifugal dehydration, and pass through the fluidized bed dryer For drying, the air inlet temperature of the dryer is set at 75-105°C.

[0035] Using the aforementioned toughened PVC resin, the latex flocculation toughened resin composition prepared according to the following general f...

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Abstract

The invention provides a toughened PVC resin, the preparation method of which comprises the following steps: adding a flocculant to the mixture of PVC slurry and toughened rubber latex, co-flocculating, dehydrating and drying the latex and PVC to obtain a modified PVC resin. The mass parts of the raw materials are as follows: 100 parts of PVC resin, 1-30 parts of toughened latex (based on solid content), 5-500 parts of flocculant solution and 60-400 parts of deionized water. The toughened rubber in the resin evenly adheres to the surface of PVC particles, and has higher toughness than ordinary PVC resin, and the toughness of the resin is gradually enhanced with the increase of the latex addition ratio. The toughening effect of the latex flocculation toughening resin composition with a general formula is obviously better than that of the powder rubber and ordinary PVC resin blend composition.

Description

technical field [0001] The invention belongs to the field of PVC modification, and relates to a toughened PVC resin, a preparation method and a composition thereof. Background technique [0002] Existing PVC toughening technology has two kinds, and one is physical toughening modification, and physical modification is mainly through mechanical blending, is about to have certain compatibility toughening modifier with PVC (as, MBS, ACR, Nitrile rubber, etc.) are blended with PVC to achieve the purpose of toughening PVC. There are some problems in the existing PVC blending and toughening technology. First, the production process of the toughening modifier is complicated and consumes a lot of energy; secondly, it is difficult for the toughening modifier to be uniformly dispersed in PVC, which will increase the The amount of modifier used will increase the cost of the product and deteriorate the overall performance of the blend; secondly, the blending of toughening modifier and P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L9/04C08L25/08C08L33/04C08J3/21
Inventor 张桦金滟王晶刘善元苏建华石胜鹏
Owner CHINA PETROLEUM & CHEM CORP
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