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A kind of nylon modified stress whitening resistant polypropylene compound and preparation method thereof

A stress-resistant, polypropylene technology, applied in the field of nylon modified stress-whitening-resistant polypropylene compound and its preparation, can solve the problem that the stress-whitening effect is not ideal, the stress-whitening resistance is not very prominent, and the copolymerized polypropylene It can improve the stress whitening resistance, reduce the cost, and increase the toughness and strength.

Active Publication Date: 2016-06-15
SHANGHAI KINGFA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the patent CN101709124A discloses a folding-resistant and anti-stress-whitening polypropylene material, which improves the toughness and stress-whitening resistance of the material by adding elastomers and self-made anti-stress-whitening masterbatches to the high-impact polypropylene substrate , although the material shows very high impact resistance, the amount of copolymerized polypropylene is too much, resulting in a serious decrease in the rigidity of the material, and the resistance to stress whitening is not very prominent
Patent CN101058655A discloses a filled polypropylene material with resistance to stress whitening and stress cracking. Polyethylene is used to improve stress whitening, but it uses block copolymerized polypropylene, and the amount of copolymerized polypropylene is too much, resulting in the material's resistance to Stress whitening effect is not very ideal

Method used

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  • A kind of nylon modified stress whitening resistant polypropylene compound and preparation method thereof
  • A kind of nylon modified stress whitening resistant polypropylene compound and preparation method thereof
  • A kind of nylon modified stress whitening resistant polypropylene compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of nylon masterbatch

[0032] Mix 38 parts by weight of nylon resin, 55 parts by weight of polypropylene resin, 7 parts by weight of POE grafted maleic anhydride (melt index 2g / 10min, grafting rate 0.8%) and 0.4 parts of processing aid zinc stearate Uniform, extruded and granulated by a screw extruder, the processing temperature of the extruder is 210-260°C.

[0033] (2) Preparation of filler masterbatch

[0034] 28 parts by weight of polypropylene resin, 60 parts by weight of talcum powder inorganic filler (average particle size is 5 microns), 8 parts by weight of aminosilane coupling agent, 10 parts by weight of polypropylene grafted maleic anhydride (melt index is 80g / 10min, grafting rate of 0.8%) and 0.4 parts by weight of processing aid zinc stearate are mixed evenly, and then melted and extruded into pellets through a screw extruder, and the processing temperature of the extruder is 190-230 ℃.

[0035] (3) Preparation of nylon modified stress-wh...

Embodiment 2

[0046] (1) Preparation of nylon masterbatch

[0047] 40 parts by weight of nylon resin, 53 parts by weight of polypropylene resin, 7 parts by weight of POE grafted acrylic acid (melt index is 2g / 10min, grafting rate 0.8%) and 0.4 part of processing aid calcium stearate are mixed uniformly, It is extruded and granulated by a screw extruder, and the processing temperature of the extruder is 210-260°C

[0048] (2) Preparation of filler masterbatch

[0049] 30 parts by weight of polypropylene resin, 60 parts by weight of talcum powder inorganic filler (average particle size is 5 microns), 10 parts by weight of epoxy silane coupling agent, 10 parts by weight of polypropylene grafted maleic anhydride (melt index 80g / 10min, graft rate 0.8%) and 0.3 parts by weight of the processing aid calcium stearate are mixed evenly, through a screw extruder, melt extruded and granulated, and the processing temperature of the extruder is 190- 230°C.

[0050] (3) Preparation of nylon-modified st...

Embodiment 3

[0061] (1) The preparation of nylon masterbatch and filling masterbatch is the same as in Example 1.

[0062] (2) Preparation of nylon modified stress whitening resistant polypropylene compound:

[0063] Take each substrate component by the following parts by weight:

[0064] 45 parts by weight of polypropylene resin

[0065] 20 parts by weight of nylon masterbatch

[0066] 30 parts by weight of filler masterbatch

[0067] 5 parts by weight of segment binder peroxydicarbonate

[0068] 0.2 parts by weight of antioxidant 1010

[0069] The processing aid zinc stearate of 0.2 weight part;

[0070] Its preparation process is as follows:

[0071] After mixing the above-mentioned base material components evenly, they are added to a twin-screw extruder for extrusion. The temperature of the extruder is set at 230°C and the speed is 300rpm; That is, a nylon-modified stress-whitening-resistant polypropylene compound is obtained. Its performance test parameters are shown in Table ...

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Abstract

The invention belongs to the technical field of macromolecule materials, and in particular relates to a nylon modified stress resistance whitening polypropylene compound and a preparation method thereof. According to the preparation method, the nylon modified stress resistance whitening polypropylene compound is prepared by smelting and performing extruding pelletizing on a polypropylene resin, filling master batch, nylon master batch, a chain segment binding agent, an antioxidant and a processing additive by virtue of a double-screw rod extruding machine. Nylon master batch is added in compounding the nylon modified stress resistance whitening polypropylene compound, the nylon is combined with a part of polypropylene in a boundary combining mode, the nylon is of a layered structure in the polypropylene through traction pelleting, and thus the toughness of a material is improved; as the filling master batch is added in compounding, boundaries of the polypropylene resin and an inorganic packing are tightly combined by virtue of the coupling agent and polypropylene graft in the filling master batch, and furthermore due to the adopted chain segment binding agent, the prepared polypropylene compound is good in stress resistance whitening property and relatively good in rigidity and toughness.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a nylon-modified stress-whitening-resistant polypropylene compound and a preparation method thereof. Background technique [0002] Polypropylene plastic products have been widely used in chemical industry, construction, light industry, automobile, home appliance, packaging and other industrial sectors. However, with the development of the industry, the requirements for material properties are getting higher and higher. Ordinary polypropylene must be modified to give it high performance in order to meet the needs. Due to the structural characteristics of polypropylene, polypropylene is susceptible to stress whitening due to external forces such as stretching, bending, and impact during use. In severe cases, it will also affect the performance and quality of the product. Therefore, in some household appliances, Applications such as toys, auto parts and power ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L77/02C08L77/06C08L51/06C08K13/02C08K5/098C08K3/34C08J3/22C08K5/14C08K5/134C08K5/526B29C47/92B29C48/92
CPCC08J3/226C08J2323/10C08J2423/10C08L23/10C08L2205/025C08L2205/035C08L51/06C08L77/00C08K13/02C08K5/14B29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92904
Inventor 杨磊刘乐文邵华杨泽何威
Owner SHANGHAI KINGFA SCI & TECH
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