CN102993705A - Oil-proof nylon polyamide 12 (PA12) material for inner layer of automobile oil pipe, and preparation method of 0il-proof nylon PA12 material - Google Patents

Abstract

The invention discloses an oil-proof nylon polyamide 12 (PA12) material for the inner layer of an automobile oil pipe, which is prepared from the following raw materials based on parts by weight: 5-10 parts of polyvinyl chloride (PVC) resin, 100-110 parts of nylon 12, 10-15 parts of nylon 66, 5-8 parts of bisphenol A polycarbonate, 5-8 parts of poly-4-methyl-1-amylene, 5-8 parts of nano-dolomite, 1-2 parts of modified antioxidant 1010, 15-20 parts of modified tree ash, 5-8 parts of nano bauxite, 1-2 parts of anti-aging agent MB, 3-5 parts of zinc stearate, 1-2 parts of scroch retarder CTP, 1-2 parts of accelerant CZ, 1-2 parts of N-(beta-acetyl ammonia citric acid 3(2-ethylhexyl) ester and 1-2 parts of adipic acid propylene glycol polyester. The antioxidant 1010 and the tree ash are added into the oil-proof nylon PA12 material for modification, so that the impact resistance, the toughness and the tensile strength of the nylon material are improved, and the material cost is reduced; and the oil-proof nylon PA12 material has the advantages of good chemical resistance, permeability resistance and wear resistance, excellent size stability, high impact resistance and tensile strength, and the like, and is hard to break, thus meeting the demand of the automobile oil pipe.

Description

A kind of automobile oil pipe internal layer oil resistant nylon PA12 material and preparation method thereof

Technical field

The present invention relates to a kind of automobile oil pipe material, specifically a kind of modified nylon material for automobile oil pipe and preparation method thereof.

Background technology

Nylon has good toughness, self lubricity, wear resistance, chemical resistant properties, gas-premeable, and oil-proofness, low temperature resistant, the nontoxic and easy advantage such as painted, so nylon is used widely in automotive industry, the usage quantity of nylon is in continuous increase on the automobile oil pipe, but nylon Shortcomings still on osmotic-pressure-tolerant, wear resistance, tensile strength, pressure-bearing property, lower temperature resistance need to improve.

Summary of the invention

In order to alleviate shortcomings and deficiencies of the prior art, the object of the present invention is to provide a kind of automobile oil pipe internal layer oil resistant nylon PA12 material and preparation method thereof.

Polyvinyl chloride resin 5-10, nylon 12 100-110, nylon 66 10-15, bisphenol A polycarbonate 5-8, poly--4-methyl-1-pentene 5-8, nano-dolomite 5-8, modification antioxidant 1010 1-2, modification trees ashes 15-20, nano aluminum alumina 5-8, antioxidant MB 1-2, Zinic stearas 3-5, anti-scorching agent CTP 1-2, accelerant CZ 1-2, N-(β one ammonia tri(2-ethylhexyl)acetocitrate 1-2, hexanodioic acid propanediol polyester 1-2;

Described modification trees ashes prepare by the following method:

The trees ashes were put into the immersion of 10-15% hydrogen peroxide solution after 3-4 hour, pull out, dry under the temperature 40-45 degree to water content 2-3%, add and be equivalent to the nano silicon of its weight 5-8%, the sec.-propyl three of 5-8% (dioctylphyrophosphoric acid acyloxy) titanic acid ester, the dibutyl maleate of 1-2%, the Zinic stearas of 3-4%, mix, stirred 30-50 minute at 60-70 ℃ of lower 3500-4000 rev/min, mix, dry.

Described modification antioxidant 1010 prepares by the following method:

(1) attapulgite is used 10-15% salt acid soak 3-4 hour, and deionized water wash soaked 3-4 hour with the 10-12% sodium hydroxide solution again, and is extremely neutral with deionized water wash again, dries;

(2) in antioxidant 1010, add tripoly phosphate sodium STPP, the 3-5% aluminium hydroxide of attapulgite, the 2-3% of the described oven dry be equivalent to its weight 3-5%, the sodium laurylsulfate of 2-3%, 60-70 ℃ of lower the stirring 40-50 minute.

Described automobile oil pipe internal layer oil resistant nylon PA12 material preparation method is characterized in that may further comprise the steps:

(1) takes by weighing each raw material by prescription, drop in the high-speed mixer, preheat to 80-90 ℃, insulation, stirring 5-6 hour; Continue to be heated to 95-105 ℃, and continue to stir, be incubated 30-45 minute;

(2) above-mentioned uniform mixture is sent into carried out melt blending and granulation in the parallel double-screw extruder, the extruder barrel temperature is 245-270 ℃.

The present invention has following beneficial effect:

The present invention is by adding the modification of antioxidant 1010 and trees ashes, improve shock resistance, toughness and the tensile strength of nylon material, reduce material cost about 20%, have that chemical resistant properties is good, osmotic-pressure-tolerant, wear resistance, good stability of the dimension, shock resistance is strong, tensile strength is high, the advantage such as be difficult for breaking can satisfy the needs of automobile oil pipe.

Embodiment

The present invention is further illustrated below in conjunction with specific embodiment.

Embodiment

Automobile oil pipe internal layer oil resistant nylon PA12 material, made by the raw material of following weight part:

Polyvinyl chloride resin 8, nylon 12 100, nylon 66 15, bisphenol A polycarbonate 5, poly--4-methyl-1-pentene 8, nano-dolomite 5, modification antioxidant 1010 1, modification trees ashes 20, nano aluminum alumina 5, antioxidant MB 2, Zinic stearas 5, anti-scorching agent CTP 2, accelerant CZ 2, N-(β one ammonia tri(2-ethylhexyl)acetocitrate 2, hexanodioic acid propanediol polyester 2;

Described modification trees ashes prepare by the following method:

The trees ashes were put into the immersion of 10% hydrogen peroxide solution after 3 hours, pull out, dry under the temperature 40-45 degree to water content 3%, add and be equivalent to the nano silicon of its weight 8%, 8% sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester, 1% dibutyl maleate, 4% Zinic stearas, mix, stirred 50 minutes at 60-70 ℃ of lower 3500-4000 rev/min, mix, dry.

Described modification antioxidant 1010 prepares by the following method:

(1) attapulgite was with 15% salt acid soak 4 hours, and deionized water wash soaked 3 hours with 12% sodium hydroxide solution again, again with deionized water wash to neutral, oven dry;

(2) in antioxidant 1010, add the attapulgite, 3% tripoly phosphate sodium STPP, 3% aluminium hydroxide of the described oven dry be equivalent to its weight 5%, 2% sodium laurylsulfate, 60-70 ℃ of lower the stirring 40-50 minute.

The preparation method may further comprise the steps:

(1) takes by weighing each raw material by prescription, drop in the high-speed mixer, preheat to 90 ℃, insulation, stirring 6 hours; Continue to be heated to 105 ℃, and continue to stir, be incubated 45 minutes;

(2) above-mentioned uniform mixture is sent into carried out melt blending and granulation in the parallel double-screw extruder, the extruder barrel temperature is 245-270 ℃.

The performance perameter of the nylon that the present embodiment is produced sees the following form.

Tensile strength: 109 Mpa(DIN73378)

Shock strength: 100Mpa(DINENISO17901)

Oil resistance (rate of expansion behind the immersion oil) % 1.2

Low temperature properties ℃ :-70, (standard P V3304)

Abradability mg:12(DIN53754)

The fuel oil infiltration capacity is less than 0.0046 gram/sky.

Claims (2)

1. an automobile oil pipe internal layer is characterized in that with oil resistant nylon PA12 material, is made by the raw material of following weight part:

Polyvinyl chloride resin 5-10, nylon 12 100-110, nylon 66 10-15, bisphenol A polycarbonate 5-8, poly--4-methyl-1-pentene 5-8, nano-dolomite 5-8, modification antioxidant 1010 1-2, modification trees ashes 15-20, nano aluminum alumina 5-8, antioxidant MB 1-2, Zinic stearas 3-5, anti-scorching agent CTP 1-2, accelerant CZ 1-2, N-(β one ammonia tri(2-ethylhexyl)acetocitrate 1-2, hexanodioic acid propanediol polyester 1-2;

Described modification trees ashes prepare by the following method:

The trees ashes were put into the immersion of 10-15% hydrogen peroxide solution after 3-4 hour, pull out, dry under the temperature 40-45 degree to water content 2-3%, add and be equivalent to the nano silicon of its weight 5-8%, the sec.-propyl three of 5-8% (dioctylphyrophosphoric acid acyloxy) titanic acid ester, the dibutyl maleate of 1-2%, the Zinic stearas of 3-4%, mix, stirred 30-50 minute at 60-70 ℃ of lower 3500-4000 rev/min, mix, dry;

Described modification antioxidant 1010 prepares by the following method:

(1) attapulgite is used 10-15% salt acid soak 3-4 hour, and deionized water wash soaked 3-4 hour with the 10-12% sodium hydroxide solution again, and is extremely neutral with deionized water wash again, dries;

(2) in antioxidant 1010, add tripoly phosphate sodium STPP, the 3-5% aluminium hydroxide of attapulgite, the 2-3% of the described oven dry be equivalent to its weight 3-5%, the sodium laurylsulfate of 2-3%, 60-70 ℃ of lower the stirring 40-50 minute.

2. an automobile oil pipe internal layer as claimed in claim 1 is characterized in that may further comprise the steps with oil resistant nylon PA12 material preparation method:

(1) takes by weighing each raw material by prescription, drop in the high-speed mixer, preheat to 80-90 ℃, insulation, stirring 5-6 hour; Continue to be heated to 95-105 ℃, and continue to stir, be incubated 30-45 minute;

(2) above-mentioned uniform mixture is sent into carried out melt blending and granulation in the parallel double-screw extruder, the extruder barrel temperature is 245-270 ℃.