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Low-odor polypropylene composite and preparation method thereof

A polypropylene composition and low-odor technology are applied in the field of low-odor polypropylene composition and its preparation, and achieve the effects of good mechanical properties, simple preparation process, and inhibition of polypropylene decomposition

Active Publication Date: 2011-05-18
CHENGDU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] However, these methods are only aimed at the influence of a certain component on the odor, thus adding an adsorbent to reduce the odor, but in fact, the odor of the interior material is the result of the interaction of multiple components.

Method used

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  • Low-odor polypropylene composite and preparation method thereof
  • Low-odor polypropylene composite and preparation method thereof
  • Low-odor polypropylene composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0065] The preparation method of the odor inhibitor: clay, zeolite, and metal oxides are activated in a muffle furnace at 500-600°C for 2 hours, taken out and placed in an odorless oven at 100°C to cool for later use.

[0066] For the same modified polypropylene formulation system, we prepared Comparative Examples 1-5 and Example 1 to investigate the ability of the odor control composition to absorb odor substances.

[0067] We investigated the change of odor by investigating the ratio and addition amount of different odor control compositions in Comparative Examples 6-8 and Example 2.

[0068] Since the types and contents of odor substances contained in different modified polypropylene formulation systems are different, we conduct investigations through Example 2 and Example 3.

[0069] Compared before and after adding the odor composition, although after adding suitable composition and suitable proportioning, the odor is obviously reduced, but it should be understood that th...

Embodiment 1

[0091] Table 6 formula content

[0092] components

Manufacturer

weight percentage

PP

Sinopec, Singapore Polyolefin

69%

POE

Mitsui

10%

talcum powder

Heshan Chemical Group

19%

odor suppressant

self made

1%

anti aging agent

Ciba

1%

[0093] In this scheme, the odor inhibitor is a clay and zeolite composition, and their weight percentages in the odor inhibitor are: clay 30%, zeolite 70%. Among them, SiO in clay 2 / Al 2 o 3 The molar ratio is 135, and the zeolite is a zeolite with a large surface area, and the specific surface area is 150~350m 2 / gr, the pore diameter is less than or equal to 1 nanometer, and the zeolite is a hydrophilic zeolite. The above raw materials were first put into a high-speed mixer with a rotation speed of about 1000 rpm and mixed for 3 minutes. See Comparative Example 1 for the extrusion granulation process.

[0094] The sample properties that comparative e...

Embodiment 2

[0113] Table 11 Formula content

[0114] components

Manufacturer

weight percentage

PP

Sinopec, Singapore Polyolefin

75%

POE

Mitsui

7%

talcum powder

Heshan Chemical Group

13%

odor suppressant

self made

4%

anti aging agent

Ciba

1%

[0115] In this solution, the odor inhibitor is clay, zeolite, and metal oxide composition, and their weight percentages in the odor inhibitor are: clay 25%, zeolite 50%, and metal oxide 25%, wherein the metal oxide is calcium oxide. Among them, SiO in clay 2 / Al 2 o 3 The ratio is 135, and the zeolite is a zeolite with a large surface area, and its specific surface area is 150~350m 2 / gr, the pore diameter is less than or equal to 1 nm. The above raw materials were first put into a high-speed mixer with a rotation speed of about 1000 rpm and mixed for 3 minutes. See Comparative Example 1 for the extrusion granulation process. The properties of Comparati...

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Abstract

The invention relates to a low-odor polypropylene composite material and a preparation method thereof. The polypropylene composite material disclosed in the invention comprises the following components in percentage by weight: 50%-78% of polypropylene, 7%-20% of flexibilizer, 0%-30% of mineral filler and 0.5%-4% of odor inhibitor, wherein the odor inhibitor comprises the following components in percentage by weight: 2%-50% of clay, 25%-75% of zeolite and 0%-50% of metallic oxide. The polypropylene composite material can be prepared by the steps of: premixing raw materials, extruding, pelleting and drying. The preparation method has a simple process and an excellent comprehensive performance, and the prepared polypropylene composite material has low odor. The odor grade of the low-ordor polypropylene composite material prepared from the odor inhibitor consisting of three components of the clay, the zeolite and the metallic oxide reaches grade 3 of a standard PV3900, which meets the use requirement of interior and exterior trimming parts of automobiles.

Description

technical field [0001] The invention relates to the technical field of modified materials, in particular to a low-odor 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. In addition to good mechanical properties, processing properties, weather resistance and scratch resistance, automotive interior materials must also have good low volatility, and odor requirements are one of the evaluations of volatile substances. [0003] In order to limit the odor of interior trim materials, the world's major automobile manufacturers have started researc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/08C08K13/02C08K3/34C08K3/26C08K3/30C08K3/22
Inventor 杨燕李永华罗忠富王灿耀陈瑶杨波
Owner CHENGDU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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