Preparation method of polypropylene-based bamboo-plastic foam composite material

A technology based on polypropylene and composite materials, which is applied in the field of forestry engineering and composite materials. It can solve the problems of polypropylene foaming difficulty, limited application fields, poor toughness, etc., and achieve good market space and development prospects, and good cell shape. , the effect of low density

Active Publication Date: 2013-07-31
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the disadvantages of high density, high cost, poor toughness, limited application fields, and difficulty in foaming polypropylene in the actual use of polypropylene-based bamboo-plastic composite materials, and adopt cross-linking modification and blending modification. Combining technologies to provide a method for preparing polypropylene-based bamboo-plastic foam composites

Method used

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  • Preparation method of polypropylene-based bamboo-plastic foam composite material
  • Preparation method of polypropylene-based bamboo-plastic foam composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0014] A kind of preparation method of polypropylene-based bamboo-plastic foam composite material of the present invention, comprises the following steps:

[0015] (1) According to the mass ratio, polypropylene PP 1 30 parts, 2 parts of cross-linking agent 1,3(1,4)-bis-tert-butylperoxyisopropyl (BIPB), 1.5 parts of triallyl isocyanurate (TAIC) 1 part of foaming agent azodicarbonamide (AC) and 0.08 parts of a mixture of nano-zinc oxide and calcium stearate in a ratio of 1:1 by mass, placed in a torque rheometer and extruded The foaming masterbatch was prepared, the temperature in the three zones of the extruder was 170°C, and the rotor speed was 20 r / min;

[0016] (2) Dry the bamboo powder at 105°C for 10 hours. Polypropylene PP 2 70 parts, bamboo powder 50 parts, lubricant liquid paraffin 1 part, antioxidant hindered phenolic antioxidant 1010 / phosphite antioxidant 168 compound (B225) 3 parts, anti-ultraviolet agent hindered amine light stabilizer (UV770) 3 parts, interfa...

Embodiment 2

[0019] A preparation method of polypropylene-based bamboo-plastic foam composite material, comprising the following steps:

[0020] (1) According to the mass ratio, polypropylene PP 1 30 parts, 1 part of cross-linking agent 1,3(1,4)-bis-tert-butylperoxyisopropyl (BIPB), 2 parts of cross-linking agent divinylbenzene (DVB), foaming agent azobis 1.5 parts of formamide (AC) and 0.2 parts of a foaming aid (a mixture of nanometer zinc oxide and zinc stearate at a mass ratio of 1:1) were placed in a torque rheometer and extruded to obtain a foaming masterbatch. The temperature in the three zones of the extruder is 170°C, and the rotor speed is 30 r / min;

[0021] (2) Dry the bamboo powder at 105°C for 10 hours. Polypropylene PP 2 70 parts, 80 parts of bamboo powder, lubricant (a mixture of stearic acid and calcium stearate in a mass ratio of 1:1) 1 part, antioxidant hindered phenolic antioxidant 1010 / phosphite antioxidant 168 compound 2 parts of compound (B225), 3 parts of anti-...

Embodiment 3

[0024] A preparation method of polypropylene-based bamboo-plastic foam composite material, comprising the following steps:

[0025] (1) According to the mass ratio, polypropylene PP 1 30 parts, 1 part of crosslinking agent 1,3(1,4)-bis-tert-butylperoxyisopropyl (BIPB), 3 parts of pentaerythritol triacrylate (SR444) as a crosslinking agent, and azobis 2 parts of formamide (AC) and 1 part of nano-zinc oxide as a foaming aid are placed in a torque rheometer to extrude a foaming masterbatch. The temperature in the three zones of the extruder is 170 ° C, and the rotor speed is 25 r / min;

[0026] (2) Dry the bamboo powder at 105°C for 10 hours. Polypropylene PP 2 70 parts, bamboo powder 100 parts, lubricant epoxy soybean oil 2.5 parts, antioxidant hindered phenolic antioxidant 1010 / phosphite antioxidant 168 compound (B225) 2 parts, anti-ultraviolet agent 2-hydroxyl-4 - 2 parts of n-octyloxybenzophenone (UV531) and 9 parts of interface compatibilizer maleic anhydride grafted po...

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Abstract

The invention discloses a preparation method of a polypropylene-based bamboo-plastic foam composite material. The polypropylene-based bamboo-plastic foam composite material is prepared by the following steps: extruding polypropylene resin, a cross-linking agent, an auxiliary cross-linking agent, a foaming agent and a foaming promoter through a torque rheometer to prepare a foam master batch; heating and uniformly mixing polypropylene resin, a lubricant, an anti-oxidant, an anti-ultraviolet agent, a bamboo powder and an interfacial compatibilizer in a high-speed mixer to prepare a premix, banburying the premix in a torque rheometer, discharging and crushing to obtain bamboo-plastic particles; uniformly mixing the bamboo-plastic particles and the foam master batch and placing in a press vulcanizer, and carrying out pre-compaction, hot briquetting and cold compression for shaping. The content of the bamboo powder reaches up to 60%. The raw materials are cheap and can be recovered. The production process is convenient and environmentally friendly. The polypropylene-based bamboo-plastic foam composite material has advantages of good Foam cell form, low density, high specific strength and good water resistance and heat resistance, and has good market space and application prospect.

Description

technical field [0001] The invention relates to a preparation method of a polypropylene-based bamboo-plastic foam composite material, which belongs to the field of forestry engineering and also belongs to the field of composite materials. Background technique [0002] Wood-plastic foam composite materials can overcome the defects of high density and low toughness of wood-plastic composite materials, and endow the material with unique properties. It has broad market prospects in the fields of architectural decoration, interior decoration, handicraft market, packaging and transportation, and automotive interior parts. . Utilizing the resources, cost and performance advantages of bamboo, filling its processing residue with thermoplastics to prepare bamboo-plastic composite materials can not only greatly improve the utilization rate of bamboo, improve the enthusiasm and income level of bamboo farmers, and alleviate the shortage of wood resources; It can strengthen the comprehen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L97/02C08K5/14C08J9/10C08J3/22
Inventor 周吓星陈礼辉黄六莲林巧佳
Owner FUJIAN AGRI & FORESTRY UNIV
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