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Special-purpose nylon material for automobile intake manifold and processing method thereof

An intake manifold, nylon technology, used in chemical instruments and methods, liquid crystal materials, etc., to achieve the effects of excellent mechanical properties, reduced fracture rate, and high mechanical properties

Inactive Publication Date: 2010-06-02
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a special nylon material for intake manifold with smooth surface, good thermal stability, high mechanical performance and low vibration noise and its processing method in view of the shortcomings of the existing nylon material for the intake manifold of automobiles.

Method used

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  • Special-purpose nylon material for automobile intake manifold and processing method thereof
  • Special-purpose nylon material for automobile intake manifold and processing method thereof
  • Special-purpose nylon material for automobile intake manifold and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Take the polyethylene glycol bis-4-carboxyphenyl ether (PEG) that has been strictly dried respectively. 2 ) 242.2g, polyethylene glycol bis-4-carboxyphenyl ether (PEG 3 ) 117g, o-toluidine (OT) 212g, anhydrous lithium chloride (LiCl) 200g, refined triphenyl phosphite (TPP) 620.6g, pyridine (PY) 1000ml, N-methylpyrrolidone (NMP) 4000ml, of which PEG 2 、PEG 3 The ratio of the amount of substances of the three monomers of , OT is 0.7 / 0.3 / 1, in N 2 Reaction at 110°C for 4 hours under protection, followed by precipitation in methanol, filtration and vacuum drying for 24 hours to obtain a thermotropic liquid crystal polyamide (a) with a melting point of 260°C, its structural formula is as follows:

[0032]

[0033] 2) Nylon 66, glass fiber, thermotropic liquid crystal polyamide (a) and processing aid are mixed uniformly in a weight percentage of 60 / 30 / 8 / 2, wherein the proportion of each component of the processing aid in the nylon material is The weight percentages ...

Embodiment 2

[0040] 1) Take the polyethylene glycol bis-4-carboxyphenyl ether (PEG) that has been strictly dried respectively. 2 ) 173g, 4'4-dicarboxy-α, ω-diphenoxyhexane 221g, o-toluidine (OT) 212g, anhydrous lithium chloride (LiCl) 200g, refined triphenyl phosphite ( TPP) 620.6g, pyridine (PY) 1000ml, N-methylpyrrolidone (NMP) 4000ml, of which PEG 2, 4'4-dicarboxy-alpha, omega-diphenoxy hexane, the ratio of the amount of three kinds of monomers of OT is 0.5 / 0.5 / 1, in N 2 Reaction at 110°C for 4 hours under protection, followed by precipitation in methanol, filtration and vacuum drying for 24 hours to obtain a thermotropic liquid crystal polyamide (b) with a melting point of 270°C, its structural formula is as follows:

[0041]

[0042] 2) Nylon 6, glass fiber, thermotropic liquid crystal polyamide (b) and processing aid are mixed evenly with a weight percentage of 53.5 / 30 / 15 / 1.5, wherein the proportion of each component of the processing aid in the nylon material is The weight perc...

Embodiment 3

[0049] 1) Take the strictly dried polyethylene glycol bis-4-carboxyphenyl ether (PEG 3 ) 195g, 4'4-dicarboxy-α, ω-diphenoxyoctane 235g, o-toluidine (OT) 212g, anhydrous lithium chloride (LiCl) 200g, refined triphenyl phosphite ( TPP) 620.6g, pyridine (PY) 1000ml, N-methylpyrrolidone (NMP) 4000ml, of which PEG2, 4'4-dicarboxy-α, ω-diphenoxyoctane, OT three monomer substances The amount ratio is 0.5 / 0.5 / 1, at N 2 Reaction at 110°C for 4 hours under protection, followed by precipitation in methanol, filtration and vacuum drying for 24 hours to obtain a thermotropic liquid crystal polyamide (c) with a melting point of 224°C, its structural formula is as follows:

[0050]

[0051] 2) Mix evenly with nylon 11, glass fiber, thermotropic liquid crystal polyamide (c) and processing aid at a weight percentage of 61.4 / 30 / 7 / 1.6, wherein the proportion of each component of the processing aid in the nylon material is The weight percentages are as follows:

[0052] Anti-aging agent and...

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Abstract

A special nylon material used in an automobile intake manifold and a processing method thereof relate to a special nylon material used in an automobile intake manifold, and aims to overcome the disadvantages of the prior binary-system nylon material including poor processing liquidity and rough surface and internal wall. The special nylon material consists of 30 to 70 wt percent of nylon, 5 to 35wt percent of short fiber, 5 to 35 wt percent of thermotropic liquor polyamide and 0.1 to 5 wt percent of processing agent, wherein the nylon is aliphatic polyamide; the short fiber is glass fiber GFor carbon fiber CF; the thermotropic liquor polyamide is main chain type aromatic polyamide with the fusion scope ranging between 180 and 300 DEG C; and the processing agent is one or a plurality of lubricant, heat stabilizer, nucleater, antioxidant and colorant. According to the processing method, all components of the nylon material are fully mixed and are extruded through a double screw extruder to carry out granulation, thereby obtaining the special nylon material after drying. The special nylon material has the advantages of smooth surface, excellent processing liquidity and thermal stability, high mechanical property and low vibration noise, etc.

Description

technical field [0001] The invention relates to a special nylon material for an automobile intake manifold, in particular to a nylon composite material containing short fibers and thermotropic liquid crystal polyamide and a preparation method thereof. Background technique [0002] Governments all over the world put energy conservation at an important position in their national development strategies in order to maintain sustainable economic development. Automobiles are the main way of energy consumption and environmental pollution. Automobile lightweight and energy saving have become important issues in today's automobile industry. [0003] The use of lightweight engineering plastics for automotive structures and components is an effective way to achieve lightweight vehicles, reduce energy consumption, and reduce environmental pollution. It also directly reflects the development level of a country's automotive industry. The intake manifold is one of the important parts arou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08K7/14C08K7/06C09K19/38B29B9/12
Inventor 张腾索红莉王朝程艳玲周彬周美玲
Owner BEIJING UNIV OF TECH
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