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Polypropylene composite material

A composite material, polypropylene technology, applied in the field of polypropylene composition and its preparation, can solve problems such as complex process and high production cost, achieve good dimensional stability, improve surface polarity, and beautiful appearance

Inactive Publication Date: 2007-11-14
杨育农 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface treatment methods to improve the surface polarity of polypropylene are mainly through physical methods such as gas thermal oxygen treatment, flame treatment, discharge treatment and high-energy ray irradiation treatment, but these methods are complicated in process and high in production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Mix 0.6kg DCP and 6kg MAH, dilute with 5.4kg of acetone solution, and then add to the weight loss liquid feeding device;

[0034] (2) 60kg polypropylene, 10kg POE, 5kg nano-scale calcium carbonate, 10kg talcum powder and 15 kg basic magnesium sulfate crystals are mixed according to the above-mentioned proportion, and then added in the feeding port of the twin-screw extruder;

[0035] (3) Simultaneously open the twin-screw extruder and the loss-in-weight liquid feeding device, inject the initiator and the grafting monomer into the extruder and extrude to obtain 104 kg of polypropylene composite material, whose physical properties are shown in Table 1.

Embodiment 2

[0037] (1) Mix 0.4kg DCP, 0.2kg BPO, 2.0kg MAH, 2kg AA, 2kg St, dilute with 5.4kg acetone solution, and then add to the weight loss liquid feeding device;

[0038] (2) 60kg polypropylene, 10kg POE, 5kg nano-scale calcium carbonate, 10kg talcum powder and 15kg basic magnesium sulfate crystals are mixed according to the above-mentioned proportion, and then added in the feeding port of the twin-screw extruder;

[0039] (3) Simultaneously open the twin-screw extruder and the loss-in-weight liquid feeding device, inject the initiator and the grafting monomer into the extruder and extrude to obtain 104 kg of polypropylene composite material, whose physical properties are shown in Table 1.

Embodiment 3

[0041] (1) Mix 0.4kg DCP, 2.0kg MAH, 2.0kg AA, dilute with 4.5kg of acetone solution, and then add to the weight loss liquid feeding device;

[0042] (2) 40kg polypropylene, 15kg POE, 10.0kg nano-scale calcium carbonate, 15kg talcum powder and 20kg basic magnesium sulfate crystals are mixed according to the above-mentioned proportion, and then added in the feeding port of the twin-screw extruder;

[0043] (3) Simultaneously open the twin-screw extruder and the loss-in-weight liquid feeding device, inject the initiator and the grafting monomer into the extruder and extrude to obtain 102 kilograms of polypropylene composite material, whose physical properties are shown in Table 1

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PUM

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Abstract

The present invention relates to a kind of polypropylene composite and its preparation method. The said polypropylene composite includes the following components with weight ratio: polypropylene (PP) 30-60, DCP 0.3-0.6, BPO 0.05-0.3, MAH 2.0-6.0, AA 0-3, St 0-3, POE 10-20, talcum powder 10-20, magnesium sulfate whisker 15-25, nano-level carbonate calcium 5-15.0. By adding inorganic filler and POE into polypropylene, the crystal form of polypropylene is modified, thus the shrink of polypropylene is limited, and the surface polarity of polypropylene is improved to make it easy to be coated.

Description

【Technical field】 [0001] The invention relates to a polypropylene composition and a preparation method thereof. 【Background technique】 [0002] Polypropylene is one of the five general-purpose plastics. Due to its rich source of raw materials, low price, easy molding and processing, and excellent product comprehensive performance, it has a wide range of uses and has become the fastest-growing variety of general-purpose resins. Although polypropylene has many advantages, it still has some disadvantages. Polypropylene has a large molding shrinkage rate. Currently, the molding shrinkage rate of unmodified polypropylene products on the market is greater than 1.0%, and some even reach 2.0%, which makes the product prone to warping and deformation; the second is that polypropylene has non-polar Its poor compatibility with polar polymers, inorganic fillers and reinforcing materials, and its paintability, dyeability, and adhesion are also poor. These shortcomings restrict the furth...

Claims

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Application Information

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IPC IPC(8): C08L51/06C08K5/14C08F255/02C08F2/44C08L23/08C08K3/36C08K3/26
Inventor 杨育农杨欣华王浩江王春江
Owner 杨育农
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