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Production method of super-toughness engineering plastic of nylon 6/ polycarbonate/ elastomer/ HDI

A polycarbonate, engineering plastics technology, applied in the field of super tough engineering plastics manufacturing, can solve problems to be expanded and so on

Inactive Publication Date: 2010-08-11
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004]For polycarbonate, although there are many researches on the composite toughening system of elastomers, it really effectively improves the compatibility of the composite toughening system, thereby improving the compatibility of the composite toughening system with The unity of the matrix, and the research on the formation of the ternary composite toughening system needs to be expanded

Method used

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  • Production method of super-toughness engineering plastic of nylon 6/ polycarbonate/ elastomer/ HDI
  • Production method of super-toughness engineering plastic of nylon 6/ polycarbonate/ elastomer/ HDI
  • Production method of super-toughness engineering plastic of nylon 6/ polycarbonate/ elastomer/ HDI

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Experimental program
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Embodiment 4-9

[0045] Nylon 6 and polycarbonate were dried in a high-performance vacuum dehumidification dryer at 90°C for 12 hours, and PA6, PC, POE, HDI, POE-g-MAH, and OMMT were mixed uniformly in the proportions described in Table 1. The rest are the same as Comparative Examples 1-3, and relevant data are listed in Tables 1 and 2.

[0046] Table 1.

[0047]

[0048] Table 2.

[0049]

[0050] Such as figure 2 As shown, the notched impact strength of the sample after adding HDI is 3-4 times higher than that of the sample without HDI, reaching 40.03kJ / m 2 , become a "super tough" material.

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Abstract

The invention discloses a production method of a super-toughness engineering plastic of nylon 6 / polycarbonate / elastomer / HDI, comprising the following steps: 1) 100 parts by mass of nylon 6 (PA6), 5-15 parts by mass of polycarbonate (PC) and 5-15 parts by mass of maleic anhydride graft ethylene-octene copolymer elastomer (POE-g-MAH) are added, 100 parts by mass of PA6, 5-15 parts by mass of PC and 0-5 parts by mass of organ-montmorillonite (OMMT) are added and 0-1.36 wt% of HDI is respectively added to be evenly mixed at a ratio; and 2) the mixture is fused and extruded by a screw extruder for granulation at the extruding temperature of 230-260 DEG C, the rotating speed of the screw is 50-80 r / min, and the cooling mode of extrudate is characterized in water cooling. Compared with the prior art, the invention obtains super-toughness nylon 6 engineering plastic with high modulus.

Description

technical field [0001] The invention relates to a manufacturing method of super-tough engineering plastics, which is based on a composite toughening system of PC and elastomer, and particularly involves the use of a chain extender for compatibilization, thereby improving the interface of PA6, PC and elastomer blends, and controlling phase Morphology, improve the comprehensive mechanical properties of the blend. technical background [0002] Nylon (PA) has high mechanical strength, good wear resistance, self-lubricating property, melt fluidity and oil resistance, but its heat resistance, impact strength and dimensional stability are poor. Polycarbonate (PC) has excellent mechanical properties, especially high impact strength, ranking first among engineering plastics, good creep resistance, and high dimensional stability. It can be used continuously in the range of 120-150 °C. But PC is sensitive to notch. It has poor resistance to stress cracking, poor wear resistance, and h...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L69/00C08L23/00C08L51/06C08K5/29C08K3/34C08J3/24
Inventor 吴唯陈军赵龙宝钱麒陈玉洁
Owner EAST CHINA UNIV OF SCI & TECH
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