High strength ultraviolet resistant PE/ PET composite material and preparation method thereof

An anti-ultraviolet and composite material technology, applied in the field of polymer materials, can solve the problems of PE/PET composite material performance reduction, reduce the relative ratio of PE and PET, and use a large amount of compatibilizer to achieve high compatibility and improve mechanical properties. Great performance and filling capacity

Active Publication Date: 2017-01-11
SHENYANG KETONG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Maleic anhydride grafted PE introduces polar side groups on PE, which increases the polarity and promotes the compatibility of PE and PET, but the grafting rate of maleic anhydride grafted PE is low, making the compatibilization effect poor , the amount of compatibilizer should be large, thus reducing the relative proportion of PE and PET, so the performance of PE / PET composite material will be reduced

Method used

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  • High strength ultraviolet resistant PE/ PET composite material and preparation method thereof
  • High strength ultraviolet resistant PE/ PET composite material and preparation method thereof
  • High strength ultraviolet resistant PE/ PET composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 100 parts of high-density polyethylene, 1.5 parts of maleic anhydride, 1.5 parts of glycidyl methacrylate, 0.4 parts of zinc stearate, take the corresponding parts of DCP according to Table 1, and mix them evenly in the high mixer, and put them in In the twin-screw extruder, the extrusion temperature is 200°C, the main engine speed is 590r / min, and the reaction time is 3-5min. After drawing, cooling and pelletizing. The results are shown in Table 1. The analysis of the results shows that when the DCP is increased to about 0.25 parts, the grafting rate and the melting finger reach the maximum at the same time. At this time, the grafting efficiency is high and the fluidity is good. Therefore, 0.2-0.3 parts of initiator is appropriate.

[0028] Table 1 The influence of DCP dosage on the grafting rate.

[0029]

Embodiment 2

[0031] Take 100 parts of high-density polyethylene, 0.25 parts of initiator, 0.4 parts of zinc stearate, and take the corresponding parts of maleic anhydride and glycidyl methacrylate according to Table 2 and mix them in a high-density mixer. In the screw extruder, the extrusion temperature is 200°C, the main engine speed is 590r / min, and the reaction time is 3-5min. After drawing, cooling, and pelletizing. The results are shown in Table 2. The result analysis shows that as the amount of MAH and GMA increases gradually, the melt index first decreases and then increases. When the melt index reaches the minimum value, the fluidity is poor and it is not easy to process. The comprehensive grafting efficiency is obtained. The amount of acetic anhydride and glycidyl methacrylate is preferably 1.2-1.5 parts.

[0032] Table 2 The influence of the amount of MAH and GMA on the grafting rate.

[0033]

Embodiment 3

[0035] Take 100 parts of high-density polyethylene, 1.5 parts of maleic anhydride, 1.5 parts of glycidyl methacrylate, 0.25 parts of initiator, and take corresponding parts of zinc stearate according to Table 3, mix them evenly in a high-mixer, and put them in In the twin-screw extruder, the extrusion temperature is 200°C, the main engine speed is 590r / min, and the reaction time is 3-5min. After drawing, cooling and pelletizing. The results are shown in Table 3. The result analysis shows that the content of lubricant zinc stearate has basically no effect on the melting finger. With the increase of the amount of zinc stearate, the color of the compatibilizer gradually becomes lighter until it is close to colorless. The smaller the effect of product color, and considering the cost of raw materials, the appropriate amount of zinc stearate is 0.3-0.5 parts.

[0036] Table 3 The influence of the amount of zinc stearate on the melt index.

[0037]

[0038] 2. The following examples furt...

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Abstract

The invention belongs to the field of polymer materials, and particularly relates to an efficient PE / PET composite material interface compatibilizer, a high strength ultraviolet resistant PE / PET composite material and a preparation method thereof. The high strength ultraviolet resistant PE / PET composite material is prepared from, by weight, 100 parts of high density polyethylene, 0.5-2.0 parts of maleic anhydride, 0.5-2.0 parts of glycidyl methacrylate, 0.05-0.3 part of initiator, and 0.1-0.5 part of heat stabilizer. The efficient PE / PET composite material interface compatibilizer include the materials of, by weight, 100 parts of high density polyethylene, 1.2-1.5 parts of maleic anhydride, 1.2-1.5 parts of glycidyl methacrylate, 0.2-0.3 part of initiator, and 0.3-0.5 part of lubricants. Maleic anhydride and glycidyl methacrylate are grafted with high density polyethylene to form an efficient interface compatibilizer. The effect of the application of the efficient PE / PET composite material interface compatibilizer in the PE / PET composite material is better than the effect of either of HDPE-G-MAH and HDPE-G-GMA used alone in the PE / PET composite material. The efficient PE / PET composite material interface compatibilizer has good heat resistance, large filling capacity, and good processing performance, and can effectively improve the mechanical properties of the PE / PET composite material.

Description

Technical field [0001] The invention belongs to the field of polymer materials, and particularly relates to a high-efficiency PE / PET composite material interface compatibilizer, a high-strength anti-ultraviolet PE / PET composite material and a preparation method thereof. Background technique [0002] With the continuous development of society, the demand for plastics is increasing, and the white pollution caused by waste plastics is becoming more and more serious. In particular, the waste of PE and PET is the most prominent. At the same time, PE has poor mechanical properties and heat resistance. PET, as an engineering plastic, is brittle and has high water absorption, and its melt viscosity during processing is low. Making PE and PET into a composite material can not only optimize the performance of the two, but also solve the two major plastic recycling problems, which is of great significance for promoting environmental protection and realizing economic benefits. [0003] PET is...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L67/02C08L51/06C08K5/132C08K5/134C08F255/02C08F222/06C08F220/32
CPCC08F255/02C08L23/06C08L2201/08C08L2203/18C08L2205/03C08L2205/08C08L2207/062C08L67/02C08L51/06C08K5/132C08K5/1345C08F220/325
Inventor 吕通建
Owner SHENYANG KETONG PLASTIC
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