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Polypropylene composition and preparation method thereof

A technology of polypropylene composition and polypropylene, applied in the field of polypropylene composition, can solve problems such as easy agglomeration, poor dispersion effect, poor performance of nano-polypropylene, etc.

Active Publication Date: 2014-12-10
惠州市沃特新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it can be inferred that the addition of nano-fillers can greatly improve the balance of rigidity and toughness of polypropylene, but nano-fillers have high surface activity, are easy to agglomerate, and have poor dispersion effects. With the increase of filler filling, the performance of nano-polypropylene gradually deteriorates, even far lower than that of non-nano-filled polypropylene

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  • Polypropylene composition and preparation method thereof

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preparation example Construction

[0035] In the preparation method of the above-mentioned embodiment, especially in step S01, the nano-filler is treated with a modifier to change the polarity of the surface of the nano-filler from hydrophilic to lipophilic, which improves the phase between the nano-filler and the second polypropylene. Capacitance, thereby improving the overall performance of the nano-polypropylene composition.

[0036] In the preparation method of the above-mentioned embodiment, especially in step S03, the method of phase transfer is adopted to uniformly transfer the nanofiller from the solvent to the second polypropylene, so that the uniform dispersion of the nanofiller in the second polypropylene is realized, thereby It is easy to obtain a nano-polypropylene composition with high rigidity and toughness balance.

[0037] Specifically, in step S01, the mass ratio of the nanofiller to the solvent is 5-50:100, the dispersion time is 0.5-20 h, and the solvent is one or more of deionized water, ab...

Embodiment 1

[0045] Step S01: Preparation of Nanofiller Dispersion

[0046] Add 10 kg of nano-titanium oxide into 200 kg of deionized water, respectively use a homogenizer and ultrasonic treatment for 0.5 h to obtain a uniformly dispersed nano-titanium oxide dispersion.

[0047] Step S02: Preparation of modified nano-titanium oxide dispersion

[0048] Add 20g of titanate coupling agent to the nano-titanium oxide dispersion, react at a constant temperature of 100°C for 0.5h, and return the volatilized solvent to the reaction system of titanate coupling agent and nano-titanium oxide dispersion after condensation , the modified nano-titanium oxide dispersion was obtained.

[0049] Step S03: Preparation of nanofiller dispersion based on the second polypropylene

[0050] 90kg of high melting index polypropylene (i.e. the second polypropylene, the melting index of the second polypropylene at a temperature of 230°C and a load of 2.16kg is greater than 100g / min), 0.05kg of antioxidant 1010, 0.05kg...

Embodiment 2

[0056] Step S01: Preparation of Nanofiller Dispersion

[0057] Add 80kg of nano-silica to 160kg of acetone, and use a homogenizer and ultrasonic treatment respectively for 2 hours to obtain a uniformly dispersed nano-silica dispersion.

[0058] Step S02: Preparation of Modified Nano Filler Dispersion Liquid

[0059] Add 1.6kg of aluminate coupling agent to the nano-silicon oxide dispersion, and react at a constant temperature of 50°C for 4 hours, and the volatilized solvent will return to the reaction system of the aluminate coupling agent and the nano-silicon oxide dispersion after condensation In the process, a modified nano-silica dispersion was obtained.

[0060] Step S03: Preparation of nanofiller dispersion based on the second polypropylene

[0061] 20kg of high melting index polypropylene (i.e. the second polypropylene whose melting index is greater than 100g / min at a temperature of 230°C and a load of 2.16kg), 0.2kg of antioxidant 1010, 0.4 of antioxidant 168 , 0.5k...

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Abstract

The invention provides a polypropylene composition. The polypropylene composition consists of the following components in parts by mass: 10-90 parts of first polypropylene, 3-20 parts of a flexibilizer and 10-80 parts of nano filler master batch, so that the nano-scale polypropylene composition with excellent dispersion and high stiffness-toughness balance is obtained. The invention further provides a preparation method for the polypropylene composition. According to the preparation method provided by the embodiment of the invention, the nano filler is treated by virtue of a modifier, so that the surface polarity of the nano filler is changed into lipophilicity from hydrophily, the compatibility between the nano filler and polypropylene is improved, excellent dispersion of a nano material in polypropylene is realized by virtue of a phase interface transfer process, and thus, the comprehensive performances of the nano polypropylene composition are improved.

Description

technical field [0001] The invention belongs to the technical field of polypropylene compositions, and in particular relates to a polypropylene composition and a preparation method thereof. Background technique [0002] Polypropylene has the advantages of light weight, good chemical resistance, good mechanical properties and low price, and is widely used in automobiles, home appliances, IT and other fields. However, polypropylene has poor dimensional stability and insufficient balance of rigidity and toughness, so it must be modified before it can be used. In order to improve the dimensional stability of polypropylene, fillers are usually added to polypropylene, and the rigidity of polypropylene is greatly improved. However, the toughness of polypropylene is affected by the size and shape of fillers. Studies have shown that the smaller the particle size of the filler, the filler can gradually play a toughening role while strengthening the rigidity, so that the toughness of ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L23/16C08L23/10C08L23/08C08K13/06C08K9/04C08K3/22C08K3/36C08K9/06C08K3/34C08K3/26
CPCC08J3/226C08J2323/12C08K2201/011C08L23/12C08L2205/02C08L2205/025C08L2205/03C08L23/16C08K13/06C08K9/04C08K2003/2237C08K5/1345C08K5/526C08K3/36C08L23/0815C08K9/06C08K3/34C08K2003/265
Inventor 曾永斌吴宪何征刘则安
Owner 惠州市沃特新材料有限公司
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