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Nanometer random olefin copolymer/montmorillonite composite material and its prepn

A nano-composite material and random copolymerization technology, applied in the field of composite materials, can solve the problems of weak crystallinity, large relative molecular mass, narrow relative molecular mass distribution, etc., and achieve the effect of improving hydrostatic resistance and mechanical properties.

Active Publication Date: 2007-08-22
杭州鸿雁管道系统科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in fact, the relative molecular mass distribution of PP-R is narrow, the relative molecular mass is relatively large, and the crystallization property is weak, so the processing is very difficult.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Nano montmorillonite and epoxy compound are mixed in a ratio of 3:1, other processing aids are added, mixed and kneaded to prepare epoxidized organic montmorillonite. Take 50 parts of the prepared epoxidized organic montmorillonite and 50 parts of maleic anhydride grafted polypropylene, mix them uniformly at a high speed, add them into a twin-screw extruder, extrude and granulate at a temperature of 180°C-240°C, and obtain Grafted polypropylene montmorillonite masterbatch.

[0023] Take 6 parts of grafted polypropylene montmorillonite masterbatch, 94 parts of random copolymerized polypropylene (4220), add other processing aids, mix and knead with twin-screw under the temperature condition of 175°C-220°C, and melt extrude to produce Granules to prepare random copolymerized polypropylene (PP-R) / montmorillonite nanocomposites.

Embodiment 2

[0025] Nano montmorillonite and epoxy compound are mixed according to the ratio of 2:1, other processing aids are added, mixed and kneaded to prepare epoxidized organic montmorillonite. Take 50 parts of the prepared epoxidized organic montmorillonite and 50 parts of maleic anhydride grafted polypropylene, mix them uniformly at a high speed, add them into a twin-screw extruder, extrude and granulate at a temperature of 180°C-240°C, and obtain Grafted polypropylene montmorillonite masterbatch.

[0026] Take 8 parts of grafted polypropylene montmorillonite masterbatch, 92 parts of random copolymerized polypropylene (E020), add other processing aids, mix and knead with twin-screw under the temperature of 175°C-220°C, and melt extrude to produce Granules to prepare random copolymerized polypropylene (PP-R) / montmorillonite nanocomposites.

[0027] Performance Testing:

[0028] The random copolymerized polypropylene (PP-R) / montmorillonite nanocomposite in Example 1 was tested by XR...

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Abstract

The nanometer random olefin copolymer / montmorillonite composite material consists of grafting polyolefin base montmorillonite master batch 5-10 wt% and random olefin copolymer 90- 95 wt%. The nanometer random olefin copolymer / montmorillonite composite material has completely stripped montmorillonite master batch and homogeneously dispersed montmorillonite. It has high mechanical performance, including tensile strength over 25 MPa, bending strength over 30 MPa and elongation at break up to 140 %; Vicat softening point up to 130 deg.c(10N); and high static hydraulic pressure tolerance.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a random copolymerized polypropylene (PP-R) / montmorillonite nanocomposite material and a preparation method thereof. Background technique [0002] Random copolymerized polypropylene (PP-R), also known as three-type polypropylene, is a new type of PP resin developed and applied in Europe in the late 1980s and early 1990s. It is a special plastic for new hot and cold water pipes and fittings. PP-R is a new type of copolymer formed by copolymerization, which combines the good bending resistance and pressure resistance of PP at higher temperatures and the excellent low-temperature impact resistance and chemical stability of PE, which significantly improves the low-temperature brittleness of PP. , and has the characteristics of pressure resistance and impact resistance. The operating temperature range can be -10°C ~ 90°C, the normal operating pressure can reac...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08K9/04B29C47/40B29B9/12
CPCC08J2323/14C08J5/005
Inventor 谢松桂盛仲夷
Owner 杭州鸿雁管道系统科技有限公司
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