Polypropylene material with low surface tension and method for preparing the same

A technology of polypropylene material and low surface tension, which is applied in the field of graft modified polypropylene material and its preparation, low surface tension polypropylene material and its preparation, to achieve the improvement of monomer grafting rate, elimination of radiation pollution, surface energy Reduced effect

Inactive Publication Date: 2008-06-18
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned polypropylenes all form fluorine-containing coatings on the surface of polypropylene to prepare fluorine-containing polypropylene materials or products, which have not been reported at present.

Method used

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  • Polypropylene material with low surface tension and method for preparing the same
  • Polypropylene material with low surface tension and method for preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] By weight, the proportions of the components for preparing the low surface tension polypropylene material are:

[0031] Polypropylene: 100 parts

[0032] Fluorinated graft monomer dodecafluoroheptyl methacrylate: 5 parts

[0033] Grafted comonomer styrene: 3 parts

[0034] Initiator dicumyl peroxide: 0.8 parts

[0035] Antioxidant tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester (1010): 0.4 parts

[0036] Antioxidant tris(2,4-di-tert-butylphenyl)phosphite (168): 0.4 parts

[0037] The preparation process is as follows:

[0038] Mix dodecafluoroheptyl methacrylate, styrene, dicumyl peroxide, antioxidant 1010, and antioxidant 168 according to the ratio of the above components, and then add the mixed system to 100 parts of dry polypropylene After adding conventional additives for conventional processing, use a high-speed mixer to mix evenly.

[0039] The above-mentioned mixed material is extruded with a 9-stage heated twin-screw extruder...

Embodiment 2

[0046] The ratio of each component to prepare the low surface tension polypropylene material of this embodiment is by weight:

[0047] Polypropylene: 100 parts

[0048] Fluorinated graft monomer dodecafluoroheptyl acrylate: 8 parts

[0049] Grafted comonomer styrene: 3 parts

[0050] Initiator dicumyl peroxide: 1.0 parts

[0051] Antioxidant tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester (1010): 0.2 parts

[0052] Dilauryl Thiodipropionate (DLTP): 0.4 parts

[0053] Each component of the above ratio is prepared according to the preparation method of Example 1 to obtain a pellet product. After drying, it is injected or pressed into a sample to measure its performance, and its water resistance and its water resistance are characterized by the method of contact angle to water. Surface tension, Table 2 is the comparison between the material (grafted PP) and pure polypropylene products (pure PP).

[0054] Table 2

[0055]

Embodiment 3

[0057] The ratio of each component to prepare the low surface tension polypropylene material of this embodiment is by weight:

[0058] Polypropylene: 100 parts

[0059] Fluorinated graft monomer dodecafluoroheptyl acrylate: 11 parts

[0060] Grafted comonomer styrene: 3 parts

[0061] Initiator benzoyl peroxide: 0.8 parts

[0062] Antioxidant tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester (1010): 0.5 parts

[0063] Antioxidant tris(2,4-di-tert-butylphenyl)phosphite (168): 0.3 parts

[0064] Each component of the above ratio is prepared according to the preparation method of Example 1 to obtain a pellet product. After drying, it is injected or pressed into a sample to measure its performance, and its water resistance and its water resistance are characterized by the method of contact angle to water. Surface tension, Table 3 is a comparison of the properties of the obtained material (grafted PP) and pure polypropylene products (pure PP).

...

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Abstract

The present invention relates to grafting modified polypropylene material and the preparation method, in particular to a recipe of low interfacial tension polypropylene material and the preparation method, pertaining to the art of polymer processing technology. The present invention mixes the polypropylene material with non-saturated double-bond fluorochemical monomer including low interfacial tension and co-grafting monomer, adopts the double-screw fusional grafting method to prepare the low interfacial tension waterproof polypropylene material or extrude the product. The obtained solid surface can be greatly decreased and the waterproof performance can be effectively improved. The present invention adopts the fusional grafting reaction to obtain the fluoric high polymer. Compared with the electric ion and optical radiation method, the present invention facilitates the grafting process, easily controls the process and reduces the process complexity, even avoids the possible radioactive damages caused by these grafting processes, protects the body health of operational staff and eliminates the radioactive pollution to the environment.

Description

technical field [0001] The invention relates to a graft modified polypropylene material and a preparation method thereof, in particular to a low surface tension polypropylene material and a preparation method thereof, and belongs to the technical field of polymer processing. Background technique [0002] Polypropylene is one of the most widely used thermoplastic polymer materials today. Compared with other general-purpose polymer materials, it has the characteristics of low price, small specific gravity, excellent mechanical properties such as yield strength and tensile strength, and has been widely used. Used in various industrial fields. [0003] Since the 20th century, with the development of polymer graft modification technology and the continuous improvement of people's living standards, people have continuously put forward higher requirements for the performance of polymer materials. Polymer materials themselves often have insufficient aging resistance, corrosion resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/02C08F4/34C08K5/524B29C47/40
Inventor 闻荻江丁国兰
Owner SUZHOU UNIV
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