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Method for preparing rubber/nanoclay masterbatches, and method for preparing high strength, high impact-resistant polypropylene/nanoclay/rubber composites using same

一种纳米粘土、复合材料的技术，应用在制备改性聚合物的橡胶/纳米粘土母料,制备高强度和高冲击强度聚丙烯/纳米粘土/橡胶复合材料领域，能够解决弯曲模量减小等问题，达到防止弯曲模量的减小、小化弯曲模量的减小、提高冲击强度的效果

Inactive Publication Date: 2013-04-24
LOTTE CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above improvements only help to prevent the reduction of flexural modulus by adding polypropylene / nanoclay masterbatch, however, cannot solve the main problem, that is, the reduction of flexural modulus due to rubber addition

Method used

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  • Method for preparing rubber/nanoclay masterbatches, and method for preparing high strength, high impact-resistant polypropylene/nanoclay/rubber composites using same
  • Method for preparing rubber/nanoclay masterbatches, and method for preparing high strength, high impact-resistant polypropylene/nanoclay/rubber composites using same
  • Method for preparing rubber/nanoclay masterbatches, and method for preparing high strength, high impact-resistant polypropylene/nanoclay/rubber composites using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: the preparation of rubber / nano clay masterbatch composition

[0036] (A) As the rubber component, 30, 40 and 50 wt.% of ethylene-octene copolymers, each having a melt flow index of 0.8 g / 10 min and an octene content of 12.5 wt.%, were used, respectively;

[0037] (B) As a compatibilizer, 30 wt.% of modified polypropylene having a maleic anhydride content of 4 wt.% and a weight average molecular weight of 40,000 is used; and

[0038] (C) As the organic nanoclay component, 20, 30 and 40 wt.% of organic nanoclay I.44P (manufactured by Nanoco, USA) were used, respectively.

[0039] The foregoing components were mixed according to relative mixing ratios, introduced into a Henschel mixer, and then thoroughly mixed for 2 minutes, ie, at 500 rpm for 1 minute, then at 1500 rpm for 1 minute. Next, a rubber / nanoclay masterbatch composition was prepared using a co-rotating twin-screw extruder with an L / D ratio of 40 at 160 to 180° C. under processing conditions of 5...

Embodiment 2

[0042] Example 2: Manufacture of Polypropylene / Nanoclay / Rubber Composite

[0043] (A) 5, 10, 15, 20 and 25 wt.% of the rubber / nanoclay masterbatch (M / B3) prepared in Example 1, respectively; and

[0044] (B) As the polypropylene resin component, 95, 90, 85, 80 and 75 wt. % of polypropylene copolymerized with 7.7 wt. % ethylene, each having a melt flow index of 35 g / 10 min and a weight average molecular weight of 216,000, according to The same procedure as described in Example 1 was mixed and processed separately to make the respective polypropylene / nanoclay / rubber composites.

[0045] Using each of the fabricated composite materials as samples, their physical properties were measured according to the following ASTM standards. The results of the measurements are shown in Table 2 below.

[0046] - Melt flow index: according to ASTM D1228, measured at 230°C, 2.16Kg;

[0047] - Density: measured according to ASTM D1505 using samples with a thickness of 2 mm;

[0048] - Flexu...

Embodiment 3

[0059] Example 3: Polypropylene / nano clay / Manufacture of Rubber Compounds

[0060] (A) 17.5 and 25wt.% of the rubber / nanoclay masterbatch 3 (M / B3) prepared in Example 1, respectively;

[0061] (B) as the polypropylene resin component, 68.8 and 59 wt.% of polypropylene copolymerized with 7.7 wt.% ethylene, each having a melt flow index of 35 g / 10 min and a weight average molecular weight of 216,000, respectively; and

[0062] (C) As the rubber component, 13.7 and 16 wt.% ethylene-octene copolymers, each having an octene content of 12.5 wt.%, were respectively mixed and processed in the same procedure as described in Example 1, thereby producing Respective polypropylene / nanoclay / rubber composites. According to the composition ratio, in the following Table 4, the manufactured products are represented by NCP1 and NCP2, respectively. According to the same procedure as described in Example 2, these products were subjected to physical property evaluation.

[0063] Table 4

...

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Abstract

The present invention relates to a kind of rubber / nanoclay masterbatch composition, and relate to the method for using it to prepare high-strength, high-impact polypropylene / nanoclay / rubber composite material, and more particularly, relate to a kind of use containing high content Process for the preparation of rubber / nanoclay masterbatches with maleic anhydride modified polymers and compatibilizers. The method for preparing a rubber-based nanoclay masterbatch according to the present invention prevents the decrease in flexural modulus caused by adding rubber to polypropylene, and improves impact resistance. Further, the present invention uses a maleic anhydride graft-modified polymer containing a high content of maleic anhydride to provide a rubber / nanoclay masterbatch composition with remarkably good dispersibility in the polymer. Furthermore, the present invention uses a rubber / nanoclay masterbatch composition containing a high content of maleic anhydride to provide a polypropylene / nanoclay / rubber composite that minimizes the decrease in flexural modulus and improves impact resistance.

Description

technical field [0001] The present invention relates to a kind of rubber / nano-clay masterbatch resin composition, and use it to prepare the method for high-strength and high-impact-strength polypropylene / nano-clay / rubber composite material, relate to a kind of use containing high content maleic acid Acid anhydride used as a compatibilizer to prepare a rubber / nanoclay masterbatch of a modified polymer. Background technique [0002] Since Toyota Central Research and Development Laboratories developed a nanocomposite material by completely exfoliating clay with a hydrophilic surface from hydrophilic nylon in 1997 and applied the developed composite material to automobile timing belt covers, automobile fuel pipes, etc., a large number of Research has focused on nanocomposites. [0003] Polymer composites reinforced with plastic materials, especially organic fillers, often have superior mechanical properties and excellent formability, weight reduction, etc., and thus are replaci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00
CPCC08J3/226C08J2323/10C08J2423/16C08J2433/10C08K3/346C08L21/00C08L23/10C08L23/16C08L51/06C08L2205/03C08L2666/02C08K2201/011
Inventor 高圣缘南炳国崔彰烋
Owner LOTTE CHEM CORP
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