Polypropylene-based composite material and preparation method thereof

A composite material, polypropylene-based technology, applied in the field of polypropylene-based composite materials and their preparation, can solve the problems of uncontrollable internal reaction, low grafting rate, complex system, etc., and is suitable for large-scale industrial production, reducing recycling The steps of processing and molding, the effect of simple and convenient preparation process

Active Publication Date: 2018-07-13
义乌斌泰工艺品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to use styrene as the second grafting monomer and polyfunctional esters as the third grafting monomer. The system is complicated and the internal reaction is uncontrollable; and the melting grafting process and subsequent purification process are relatively tedious and difficult. To meet the needs of industrialization
[0007] At present, the compatibilizer used in PP/PA composites or glass fiber reinforced polypropylene composites

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Preparation of maleic anhydride grafted polypropylene compatibilizer (marked as A):

[0067] Add 100 g of polypropylene powder (brand PP-H-GD320), 20 g of benzoyl peroxide, and 150 ml of xylene as a surfactant into the reactor replaced by high-purity nitrogen, and first raise the temperature to 80°C to swell for 1 h. Then adjust the temperature to 100°C for degradation for 1 hour to obtain high-fluidity polypropylene powder, then add 10 g of azobisisobutyronitrile and 15 g of maleic anhydride into the above-mentioned reactor containing high-fluidity polypropylene, and Adjust the temperature to 80°C and react for 5 h. After the reaction, the obtained sample was separated and purified with acetone and dried by suction filtration;

[0068] Through melt flow index measurement, the melt flow index of gained polypropylene compatibilizer is 56 g / 10 min, figure 1 It is the infrared absorption spectrum of the maleic anhydride grafted polypropylene compatibilizer, from which it ...

Embodiment 2

[0070] Preparation of glycidyl methacrylate grafted polypropylene compatibilizer (labeled B):

[0071] Add 100 g of polypropylene (grade PP-H-GD320), 10 g of di-tert-butyl peroxide, and 150 ml of xylene as a surfactant into the reactor, first raise the temperature to 60°C and swell for 1 h, then adjust the temperature to 80°C ℃ for 2 hours to obtain high-fluidity polypropylene, then add 15 g of azobisisoheptanonitrile and 100 ml of glycidyl methacrylate into the above-mentioned reactor containing high-fluidity polypropylene, and adjust the temperature to 90°C After the reaction was completed for 3 h, the obtained sample was separated and purified with acetone and dried by suction filtration.

[0072] According to the melt flow index measurement, the melt flow index of the obtained polypropylene compatibilizer was 82 g / 10 min. figure 2 It is the infrared absorption spectrum of glycidyl methacrylate grafted polypropylene compatibilizer, from which it can be observed that glyci...

Embodiment 3

[0074] Preparation of maleic anhydride grafted polypropylene compatibilizer (marked as C):

[0075] Add 100 g of polypropylene (brand PP-H-GD320), 15 g of di-tert-butyl peroxide, and 30 ml of n-hexane as a surfactant into the reactor, first raise the temperature to 80°C and swell for 1 h, then adjust the temperature to 90°C ℃ for 3 hours to obtain high-fluidity polypropylene, then add 8 g of azobisisoheptanonitrile and 50 g of maleic anhydride into the above-mentioned reactor containing high-fluidity polypropylene, and adjust the temperature to 90°C for 6 h After the reaction, the obtained sample was separated and purified with acetone and dried by suction filtration.

[0076] The melt flow index was measured by the melt flow index, and the melt flow index of the obtained polypropylene compatibilizer was 97g / 10 min, and the maleic anhydride grafting rate was further determined to be 1.06%.

[0077] Preparation Technology of Polypropylene-Based Composite Blending and Extrusion...

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Abstract

The invention discloses a polypropylene-based composite material and a preparation method thereof. The polypropylene-based composite material is prepared from the following materials by taking the weight part of polypropylene as 100 parts: 10 to 100 parts of polyamide, 2 to 30 parts of functionalized polypropylene compatilizer, 0.5 to 5 parts of lubricant, 0.5 to 5 parts of plasticizer and 0.01 to1 part of stabilizing agent. The novel functionalized polypropylene compatilizer is added so that mutual mixing of the polypropylene and the polyamide can be promoted very well and the compatibilization effect is remarkable; an original shape of polypropylene powder can be kept through synthesis of the functionalized polypropylene compatilizer and the step of reprocessing and molding a subsequentmaterial is reduced; when the polypropylene-based composite material is blended and extruded, the temperature of each heating section and the rotary speed of a screw rod are regulated and controlled,and the dispersion of the functionalized polypropylene compatilizer in the polypropylene and the polyamide can be promoted to the extremely great extent, so that the compatibilization effect of the functionalized polypropylene compatilizer is displayed very well; a preparation process is simple and convenient and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a polypropylene-based composite material and a preparation method thereof, belonging to the field of polymer material modification technology and application. Background technique [0002] Polypropylene (PP) has a simple synthesis method, low price, light weight, low water absorption, outstanding stress crack resistance, wear resistance, and easy processing and molding. It is a general-purpose plastic that is widely used. However, polypropylene products have poor weather resistance, high static electricity, poor dyeability, printability and adhesion, low low-temperature impact strength, and poor creep resistance. [0003] Combining PP with other plastics or inorganic fillers can effectively improve its performance and expand the application range of polypropylene products. However, since PP is a non-polar polymer, there is always the problem of poor compatibility when PP is compounded with other materials. Adding a compatibili...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L77/02C08L51/06C08L23/06C08L91/00C08K5/134
CPCC08L23/12C08L2205/035C08L2205/08C08L77/02C08L51/06C08L23/06C08L91/00C08K5/1345
Inventor 于翔曹伟娜李俊徐茜丁宁王延伟
Owner 义乌斌泰工艺品有限公司
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