A kind of VOC-reducing masterbatch for polypropylene and its preparation method and application

A polypropylene and masterbatch technology, applied in the field of polymer composite materials, can solve the problem of high cost of devolatilization process, achieve rich foam, improve devolatilization effect, and simple and convenient use

CN105504507BActive Publication Date: 2017-11-24SOUTH CHINA UNIV OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2017-11-24

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Abstract

The invention discloses a VOC-decreased master batch for polypropylene as well as a preparation method and application of the VOC-decreased master batch. The VOC-decreased master batch is prepared from a novel microcellular-foamed polypropylene carrier, an aqueous solution VOC remover adsorbed to the polypropylene carrier and a surfactant in parts by mass. According to the application, in a preparation process of a composite material, the VOC-decreased master batch and polypropylene resin are uniformly mixed and stirred by virtue of a VC efficient mixer, and the mixture is extruded and granulated by virtue of twin-screw extrusion to generate an environment-friendly modified polypropylene composite material; the addition amount of the VOC-decreased master batch is 1%-10%. The VOC-decreased master batch for polypropylene has good compatibility with the polypropylene resin and can be completely devolatilized in a vacuum manner without residues, so that the subsequent processing and performance of modified polypropylene are not influenced, VOC of a polypropylene product is effectively decreased, and the polypropylene product is relatively environmentally friendly and can meet requirements of automobile manufacturers on VOC.
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Description

technical field

[0001] The invention relates to polypropylene modification, in particular to a VOC-reducing masterbatch used for polypropylene modified materials, and a preparation method and application of the VOC-reducing masterbatch, belonging to the field of polymer composite materials. Background technique

[0002] Polypropylene is a semi-crystalline thermoplastic with excellent mechanical properties, corrosion resistance and low price, and is widely used in the automotive field. However, polypropylene will release volatile organic compounds (VOC) to varying degrees during processing and use, and there are problems such as polluting the environment and endangering human health. The "Guidelines for Air Quality Evaluation in Passenger Cars" (GB / T27630) was officially implemented on March 1, 2012, and was officially included in the government's basic requirements for environmentally friendly vehicles on April 24, 2014. At present, the Ministry of Environmental Protection ...

Examples

Embodiment 1

[0032] Required raw materials: microporous foamed polypropylene carrier (XP100-84) from Germany Marborui company, the polypropylene carrier cell size is less than 10 microns, and the cell density is greater than 10 9 / cm 3 , has good compatibility and adsorption to VOC remover and surfactant; the surfactant comes from DuPont Company of the United States, the surfactant does not contain any VOC, and can provide excellent performance of reducing surface tension, suitable for various System; VOC remover—pure water, purity ≥99.9%.

[0033] A VOC-reducing masterbatch for polypropylene, according to the mass percentage of raw materials, its components are formulated according to the following table 1:

[0034] Table 1

[0035]

[0036] According to the proportion of ingredients in Table 1, first mix the pure water and the surfactant, stir evenly, then add it to the polypropylene carrier, mix at a stirring speed of 15rpm for 10min, and evenly absorb the VOC remover in the polypr...

Embodiment 2

[0039] a. Preparation of VOC-reducing masterbatch for polypropylene

[0040]Required raw materials: Microporous foamed polypropylene carrier (XP100-84) is from Germany Marborui; domestic foamed PP is from Hefei Huitong New Material Co., Ltd.; surfactant is from DuPont, USA; VOC remover—10% weak.

[0041] A VOC-reducing masterbatch for polypropylene, according to the mass percentage of raw materials, its components are formulated according to the following table 2:

[0042] Table 2

[0043]

[0044]

[0045] According to the above ratio, first mix pure water and surfactant, stir evenly, then add to the polypropylene carrier, mix at a stirring speed of 1000rpm for 3 minutes, so that the VOC remover is evenly adsorbed in the polypropylene carrier, and the VOC-reducing masterbatch is obtained.

[0046] b. Application of VOC-reducing masterbatches for different types of polypropylene

[0047] Required raw materials: polypropylene resin PP-045, from Shandong Hengyuan Chemic...

Embodiment 3

[0057] a. Preparation of VOC-reducing masterbatch for polypropylene

[0058] Required raw materials: Microcellular foamed polypropylene carrier (XP100-84) is from Mulberry Company in Germany; surfactant FS-31 is from DuPont Company in the United States; VOC remover—pure water, 20% propanol and butanol (1: 1) Mixture aqueous solution, 30% propanol aqueous solution, 50% ethanol aqueous solution.

[0059] A VOC-reducing masterbatch for polypropylene, according to the mass percentage of raw materials, its components are formulated according to the following table 5:

[0060] table 5

[0061]

[0062] According to the above ratio, first mix pure water and surfactant, stir evenly, then add to the polypropylene carrier, mix at a stirring speed of 1000rpm for 3 minutes, so that the VOC remover is evenly adsorbed in the polypropylene carrier, and the VOC-reducing masterbatch is obtained.

[0063] b. Application of VOC-reducing masterbatches for different types of polypropylene

...