Polypropylene combination with low smell and diffusion and preparation method thereof

A polypropylene composition and low emission technology are applied in the field of low odor, low emission polypropylene composition and its preparation, and achieve the effect of removing odor, low cost and low odor

Active Publication Date: 2014-04-16
TIANJIN KINGFA NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned methods solve the odor problem of polypropylene materials to varying degrees. However, the above-mentioned methods only aim at the influence of a certain component on the odor, thereby adding an adsorbent to reduce the odor. The result of the interaction of two components with odor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0040] Preparation of jellyfish pellets:

[0041] Fully mix high-melt-strength polypropylene with different melt strengths and mineral fillers (talc powder, calcium carbonate or barium sulfate) according to the ratio shown in Table 1, extrude strip-shaped polypropylene in an extruder, and then Shred it into polypropylene pre-expanded granules; use water as a foaming agent to foam the polypropylene pre-expanded granules to prepare expanded polypropylene with high melt strength; Polypropylene and water were mixed in a high-speed mixer for 5-10 minutes to prepare jellyfish particles with the water content shown in Table 1, which were released for use.

[0042] Table 1 The content of each component of jellyfish pellets (weight percent)

[0043] Component A1 A2 A3 A4 A5 B1 High Melt Strength Polypropylene 49 15 8 26 37 68 talcum powder 1 / / 4 / / calcium carbonate / 5 / / 3 / Barium sulfate / / 2 / / 2 Water content...

Embodiment 1

[0045] A low odor, low emission polypropylene composition, its raw material formula is as shown in table 3, and its preparation method comprises the following steps:

[0046] Weigh the polypropylene, toughening agent and mineral filler according to the weight percentage, and mix them in the high mixer for 1-3 minutes; mix them evenly to obtain the premix; put the premix into the main feeding port of the twin-screw extruder , add jellyfish pellets from the side feed port, control the temperature at 200°C to 215°C, and melt and extrude under the conditions of screw speed of 450 rpm, then granulate and cool to obtain a polypropylene composition. Determination of its odor and volatile content, the specific data are listed in Table 4.

[0047] Among them, the polypropylene resin is copolymerized PP, its melt flow rate (230°C / 2.16kg) is 25g / 10min, the toughening agent is ethylene-butene copolymer, and its density is 0.862g / cm 3, The melt mass flow rate is 1.2g / 10min (190℃ / 2.16kg), ...

Embodiment 2

[0049] A low odor, low emission polypropylene composition, its raw material formula is as shown in table 3, and its preparation method is with embodiment 1:

[0050] Among them, the polypropylene resin is copolymerized PP, its melt flow rate (230°C / 2.16kg) is 5.3g / 10min, the toughening agent is ethylene-octene copolymer, and its density is 0.87g / cm 3 , The melt mass flow rate is 0.5g / 10min (190℃ / 2.16kg), and the mineral filler is barium sulfate.

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Abstract

The invention discloses a polypropylene combination with low smell and diffusion and a preparation method thereof. The polypropylene combination with the low smell and diffusion comprises the compositions as follows: 37-88 percent of polypropylene resin, 5-30 percent of a toughener, 0-40 percent of mineral filler, 0.5-5 percent of medusa particle and 0.1-3 percent of an assistant. The preparation method comprises the steps as follows: the polypropylene resin, the toughener, the mineral filler and the assistant are uniformly mixed in a high mixing machine for 1-3 minutes, places in a main feeding hole of an dual-screw extruder, added with the medusa particles from a side feeding hole, molten, extruded, pelletized and dried at a temperature controlled within 200-215 DEG C and under the rotation speed condition of 450 round / minute, so that the polypropylene combination with the low smell and diffusion is obtained. According to the invention, the medusa particles adopting high-melts foamed PP as a carrier is used as a stripping agent, various kinds of volatile small molecules and organic compounds which are generated during processing can be effectively removed, the prepared polypropylene combination has the characteristics of low smell and diffusion, and can satisfies the demand of automobile for inner decoration.

Description

technical field [0001] The invention relates to a polypropylene composition, in particular to a low-odor, low-emission polypropylene composition and a preparation method thereof. Background technique [0002] Polypropylene (PP) material has been widely used in various assembly systems of automobiles due to its good comprehensive performance. Most of the automotive exterior and interior parts are injection molded using polypropylene composite materials. Automotive interior parts such as dashboards, pillars, glove boxes, door panels, etc., exterior parts such as bumpers, anti-scratch strips, spoilers, etc. [0003] In order to meet the requirements of automobile standards, polypropylene composite materials are often added with inorganic fillers, elastomers, antioxidants, scratch-resistant agents and other substances. These materials produce volatile substances during processing, which are the main source of odor. If the smell is strong, it will seriously pollute the air in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08K3/34C08K3/26C08K3/30C08J9/08C08J3/22B29B9/06
CPCB29C48/92B29C2948/9258B29C2948/92704C08J3/226C08J9/125C08J2203/10C08J2323/12C08J2323/14C08J2423/12C08L23/12C08L23/14C08L2205/025C08L2205/03C08L2205/035C08L23/0815C08K3/34C08K2003/265C08K2003/3045
Inventor 肖华明陶四平李晟张春怀李欣王扬利周英辉
Owner TIANJIN KINGFA NEW MATERIAL
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