Nylon fuel tank in use for automobiles and motorcycles, and preparation method

A technology for motorcycles and fuel tanks, applied in the field of nylon fuel tanks and their preparation, can solve the problems that the surface cannot be directly painted, large corrosion, complicated processing procedures, etc., achieve excellent impact resistance and other mechanical properties, reduce cost and energy. Consumption and overcoming the effect of long production cycle

Inactive Publication Date: 2007-12-19
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: (1) The processing procedure is complicated, requiring many complicated procedures such as stamping, welding, painting, etc., and the production cycle is long; (2) It cannot make complex structures; (3) It is not resistant to corrosion, and salt and acid are harmful to metal fuel tanks. It has a large corrosion effect, especially for the automobile fuel tank at the bottom of the vehicle; (4) the weight is heavy, which does not meet the trend of lightweight vehicles; (5) the heat conductivity is high, and it is easy to explode in the event of an accident
Its disadvantages are: (1) high fuel permeability; (2) the surface cannot be directly painted, and must undergo special treatment; (3) low mechanical properties at room temperature
There are shortcomings such as long product forming time, complicated process, unstable process control and low yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]Component A: ε-caprolactam 640 g, sodium methoxide 20 g, nylon 910 100 g, polypropylene glycol 80 g, tetrakis[β-(3,5-di-tert-butyl-4-carboxyphenyl) propionate] pentaerythritol 60 grams of mixture with tris (2,4-di-tert-butylphenyl) phosphite (1:1, weight ratio), 60 grams of benzophenone, and 40 grams of carbon black. A total of 1000 grams of component A, melted and mixed at 150 ° C, vacuum dehydration for 15 minutes;

[0042] Component B: 960 grams of ε-caprolactam, 40 grams of polymethylene polyphenyl polyisocyanate. Component B totaled 1000 g, melted and mixed at 150° C., and vacuum dehydrated for 15 minutes.

[0043] Component A and component B were mixed, poured into a mold, and reacted at 145° C. for 15 minutes.

[0044] Two-way rotation speed: revolution is 5rpm; rotation is 10rpm.

Embodiment 2

[0046] Component A: 510 grams of ε-caprolactam, 40 grams of sodium hydroxide, 200 grams of nylon 1010, 120 grams of propylene glycol and ethylene glycol copolymer, tetrakis[β-(3,5-di-tert-butyl-4-carboxyphenyl ) propionic acid] pentaerythritol ester and dilauryl thiodipropionate mixture 80 grams (2:1, weight ratio), N, N'- oxanilide 30 grams, wollastonite 20 grams. A total of 1000 grams of component A was melted and mixed at 170° C. to 180° C., and vacuumed and dehydrated for 15 minutes.

[0047] Component B: 900 g of ε-caprolactam, 100 g of polyisocyanate dissolved in methylpyrrolidone. A total of 1000 g of component B was melt-mixed at 175° C., and vacuum dehydrated for 15 minutes.

[0048] Component A and component B were mixed, poured into a mold, and reacted at 195° C. for 12 minutes.

[0049] Two-way rotation speed: revolution is 8rpm; rotation is 12rpm.

Embodiment 3

[0051] Component A: ε-caprolactam 310g, caprolactam sodium salt 160g, nylon 1012 300g, n-octanol 100g, 1,1,3-tris(5-tert-butyl-4-hydroxy-2-methylphenyl) - 30 grams of butane and tris [(4-octylethyl) phenyl] phosphite mixture, 60 grams of benzotriazole, 40 grams of carbon black. A total of 1000 grams of component A was melted and mixed at 190° C., and vacuum dehydrated for 15 minutes.

[0052] Component B: 890 grams of ε-caprolactam, 110 grams of toluene diisocyanate. A total of 1000 grams of component B was melted and mixed at 180° C. to 190° C., and vacuum dehydrated for 15 minutes.

[0053] Component A and component B were mixed, poured into a mold, and reacted at 220° C. for 8 minutes.

[0054] Two-way rotation speed: revolution is 12rpm; rotation is 15rpm.

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PUM

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Abstract

This invention discloses a process for preparing a nylon fuel tank used in vehicles and motorcycles, which comprises the steps of: molten-mixing 10-49.9 wt.% of epsilon-hexanolactam with the catalyst, plasticizer, antifoamer, antioxygen, light stabilizer and other assistants to obtain component A; molten-mixing the rest of the epsilon-hexanolactam with the catalyst to obtain component B; mixing component A and B, and injecting the mixture into the fuel tank mold to be molded into nylon fuel tanks. The process of this invention achieves plasticizing modification and product molding in a single step with low energy consumption. The nylon fuel tanks have good resisting property, as well as good impact resistance and other mechanical properties at -40DEG C-60 DEG C.

Description

technical field [0001] The invention relates to a nylon fuel tank applied to automobiles and motorcycles and a preparation method thereof. Background technique [0002] At present, the fuel tanks of automobiles and motorcycles are mainly metal fuel tanks and polyethylene fuel tanks. From the perspective of the development process of fuel tanks, it can be divided into three stages: metal fuel tanks, polyethylene fuel tanks, and high-performance polymer fuel tanks. [0003] The main materials of the metal fuel tank are iron and aluminum, and the prior art is such as CN2150094Y, WO00 / 032843A1, and WO99 / 56977A1. Its advantages are: (1) high rigidity; (2) fuel penetration resistance; (3) surface paintability; (4) easy maintenance. The disadvantages are: (1) the processing process is complex, requiring many complicated processes such as stamping, welding, painting, etc., and the production cycle is long; (2) complex structures cannot be made; (3) it is not resistant to corrosion...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/14C08L77/02B60K15/03B62J35/00
Inventor 杨桂生黄玉强李智吴奋荣沈时骏孙伟
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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