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Modified polypropylene material and preparation method thereof

A technology of polypropylene material and polypropylene powder, which is applied in the field of modified polypropylene material and its preparation, can solve the problems of adverse effects on the mechanical properties of modified polypropylene material, improve the thermal deformation temperature and the effect of electrical and thermal conductivity, and ensure stability properties, and the effect of increasing the thermal decomposition temperature

Inactive Publication Date: 2017-11-24
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned modification methods often require a large amount of fillers to modify polypropylene to obtain the modification effect, but have an adverse effect on the mechanical properties of the modified polypropylene material

Method used

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  • Modified polypropylene material and preparation method thereof
  • Modified polypropylene material and preparation method thereof
  • Modified polypropylene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The modified polypropylene material of the present embodiment is made up of the following components by weight:

[0026] The polypropylene powder resin of 25kg, the graphene of 0.25kg, the composite antioxidant of 0.1kg (made up of 0.025kg antioxidant 1010 and 0.075kg antioxidant 168).

[0027] The preparation method of above-mentioned modified polypropylene material has the following steps:

[0028] (1) Pour the bulk polymerized polypropylene powder, modifier, compatibilizer and composite antioxidant weighed according to the formula into a mixer and mix at a low speed for 4 minutes, and then discharge to obtain a mixed material;

[0029] (2) Feed the mixed material into a twin-screw extruder for melt extrusion, cut the extruded strip into pellets, cool it with water, and obtain a modified polypropylene material through drying treatment.

[0030] In the above-mentioned steps (2), the temperature in each district of the twin-screw extruder is: T 1 =150°C, T 2 =160°C, ...

Embodiment 2～ Embodiment 6

[0032] The preparation method of the modified polypropylene material of each example is the same as that of Example 1, the difference lies in the weight ratio of each component, see Table 1 for details.

[0033] Table 1: The formula ratio of embodiment 1~6

[0034]

[0035]

[0036] The modified polypropylene material obtained in Examples 1 to 6 was injected into a standard sample with an injection molding machine, and the mechanical properties of the standard sample were tested according to national standards. The test results are shown in Table 2.

[0037] Table 2: Test results of modified polypropylene materials prepared by the recipes of Examples 1 to 6

[0038]

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Abstract

The invention discloses a modified polypropylene material and a preparation method thereof. The modified polypropylene material is composed of 100 parts by weight of polypropylene resin, 0.5 to 5 parts by weight of a modifier, 0 to 15 parts by weight of a compatibilizer and 0.1 to 0.4 parts by weight of a composite antioxidant. The modified polypropylene material has good strengthening and toughening performances, a high thermal decomposition temperature and a high thermal deformation temperature.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to a modified polypropylene material and a preparation method thereof. Background technique [0002] Polypropylene is widely used in the manufacture of components such as electronic appliances, auto parts, and modern office supplies due to its good heat resistance, low water absorption, low price, and wide source. However, due to the disadvantages of low comprehensive mechanical properties and poor electrical and thermal conductivity of polypropylene, its application in some fields is limited. [0003] At present, there are many types of modified polypropylene used in the market, which are mainly modified for a certain performance. Filling modification is to add relatively cheap non-metallic mineral powder materials or other materials to polypropylene, so as to reduce the raw material cost of products, and at the same time improve some properties of plastic mat...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08K3/04C08K5/134C08K5/526
CPCC08L23/12C08K3/04C08K5/1345C08K5/526C08K2201/001C08K2201/003C08K2201/006C08L2201/08C08L51/06
Inventor 周健杨燕青张丽欣杨澄宇刘姿彤杨立云袁园
Owner JIANGSU UNIV OF TECH
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