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Polypropylene composite material and preparation method thereof

A technology of composite material and polypropylene, which is applied in the field of polypropylene composite material and its preparation, can solve the problems of low impact resistance and impact strength, increase production cost, decrease rigidity and strength, etc., achieve high and low temperature impact resistance, reduce production cost, the effect of reducing the product

Active Publication Date: 2010-08-18
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polypropylene has poor toughness and low impact strength, especially low-temperature impact resistance, which limits the application of polypropylene as a stressed structural member.
[0003] In order to improve the low-temperature impact resistance of polypropylene materials, the traditional method is to add elastomers to the polypropylene resin to improve the toughness of the material, but the addition of elastomers will reduce the rigidity and strength of the material, so the existing polypropylene resin The method of strengthening and toughening is usually to add inorganic rigid particles and elastomers to polypropylene resin to achieve the purpose of rigidity and toughness balance.
[0004] Chinese patent CN101429306A discloses a special material for super low temperature resistant automobile bumper and its preparation method. The special material for super low temperature resistant automobile bumper provided by the above method is to add inorganic rigid particle calcium carbonate and elastomer ethylene octene copolymer to polypropylene resin compound and olefin block copolymer, as well as auxiliary agents such as coupling agent and antioxidant to obtain polypropylene composite material through extrusion molding, although the polypropylene composite material provided by the above method has good low temperature impact resistance, but due to the High price, thus increasing the production cost of such materials

Method used

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  • Polypropylene composite material and preparation method thereof
  • Polypropylene composite material and preparation method thereof
  • Polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take 56g polypropylene, 24g polyethylene, 0.5g antioxidant Irganox1010, 0.5g lubricant and mix them separately, add the mixed raw materials into the internal mixer for plasticization, the internal mixer speed is 80 rpm, The plasticized product is obtained after 2 minutes of plasticizing;

[0037] Slowly add 19g of nano calcium carbonate to the plasticized product obtained in the previous step and mix for 15 minutes, and then the blend is compression molded on a flat vulcanizer at a compression temperature of 200°C and a hot pressing pressure of 10Mpa to obtain a polypropylene composite material .

[0038] Take the polypropylene composite material prepared in this example with a specification of 63.3mm×12.7mm×3.2mm, and measure the notched Izod impact strength of the sample, see figure 1 This is a graph of the relationship between the impact strength and temperature of the polypropylene composite material prepared in this example. It can be seen from the figure that the notch...

Embodiment 2

[0040] Take 63.5g of polypropylene, 8g of polyethylene, 0.3g of antioxidant Irganox1010, and 0.2g of lubricant and mix them, and add the mixed raw materials to the internal mixer for plasticization. The internal mixer rotates at 70 rpm , The plasticized product is obtained after 3 minutes of plasticizing;

[0041] Slowly add 28g of nano calcium carbonate to the plasticized product obtained in the previous step and mix for 15 minutes, and then the blend is compression molded on a flat vulcanizer at a compression temperature of 190℃ and a hot pressing pressure of 8Mpa to obtain a polypropylene composite material .

[0042] Take the polypropylene composite material prepared in this example with a specification of 63.3mm×12.7mm×3.2mm, and measure the notched Izod impact strength of the sample, see figure 2 This is a graph of the relationship between impact strength and temperature of the polypropylene composite material prepared in this example. It can be seen from the figure that th...

Embodiment 3

[0044] Take 64g polypropylene, 16g polyethylene, 0.4g antioxidant Irganox 1010, 0.6g lubricant and mix them separately, add the mixed raw materials into the internal mixer for plasticization, the internal mixer speed is 80 rpm , The plasticized product is obtained after 3 minutes of plasticizing;

[0045] Slowly add 19g of nano calcium carbonate to the plasticized product obtained in the previous step and mix for 15 minutes, and then the blend is compression molded on a flat vulcanizer at a compression temperature of 200°C and a hot pressing pressure of 10Mpa to obtain a polypropylene composite material .

[0046] Take the polypropylene composite material prepared in this example with a specification of 63.3mm×12.7mm×3.2mm, and measure the notched Izod impact strength of the sample, see image 3 This is a graph of the relationship between impact strength and temperature of the polypropylene composite material prepared in this example. It can be seen from the figure that the notche...

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Abstract

The invention provides a polypropylene composite material, comprising the following components in percentage by weight: 35 to 80 percent of polypropylene, 7 to 45 percent of polyethylene, 10 to 30 percent of inorganic nano-particles, 0.1 to 1 percent of antioxidant, and 0.1 to 1 percent of lubricant. The polypropylene composite material provided by adopting the method has the characteristics of low cost and good low-temperature impact resistance. The invention also provides a method for preparing the polypropylene composite material, comprising the following steps: mixing and plasticating the polypropylene, the polyethylene, the antioxidant and the lubricant to prepare a plasticated product; mixing, compacting and molding the plasticated product with the inorganic nano-particles to prepare the polypropylene composite material. The polypropylene composite material with good low-temperature impact resistance can be prepared by adopting the method in lower cost.

Description

Technical field [0001] The invention relates to the field of polymer composite materials, in particular to a polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene has the characteristics of low price, light weight, good chemical resistance and easy processing. It is widely used in packaging, auto parts and construction materials, and it is one of the three general plastics. However, polypropylene has poor toughness and low impact strength, especially low temperature impact resistance, which limits the application of polypropylene as a stressed structure. [0003] In order to improve the low-temperature impact resistance of polypropylene materials, the traditional method is to add elastomers to polypropylene resins to increase the toughness of the materials, but the addition of elastomers will reduce the rigidity and strength of the materials, so the existing polypropylene resins The method of strengthening and toughening is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/00C08L23/12C08L23/06C08K13/06C08K9/04C08K9/06C08K3/26C08K3/36C08K3/22
Inventor 姜伟胡跃鑫姜旸
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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