CN102977596B - Vehicle fuse box upper cover and manufacturing method thereof - Google Patents

Abstract

The present invention discloses a vehicle fuse box upper cover and a manufacturing method thereof. The manufacturing method mainly comprises: preparing a material A and a material B, drying the materials, mixing the materials according to a certain ratio, adding the mixed material to a heated injection molding machine, setting injection pressures, speeds, injection times and glue injection amounts at different segments of the injection molding machine, and setting a final packing pressure and a packing speed to achieve an optimal injection molding process so as to obtain the final qualified product. According to the present invention, physical property defects such as easily-appearing white drawing, fracture, poor toughness, low intensity and the like during molding of the injection molding vehicle fuse box upper cover are solved, the injection molding process is stable, the obtained product has stable stability, production efficiency is improved, and production cost is reduced.

Description

A kind of automobile insurance box cover and manufacture method thereof

Technical field

The present invention relates to a kind of automobile insurance box cover and manufacture method thereof, belong to field of automobile.

Background technology

Nylon has good toughness, self lubricity, wear resistance, chemical resistant properties, gas-premeable and oil-proofness, the nontoxic and easy advantage such as painted, so nylon is used widely industrial, along with social progress, the usage quantity of automobile is in continuous increase, most of component of automobile all have nylon to obtain, the plastic cement of prior art usually have assembling inconvenient, locate inaccurate, connect unstable, strength of joint not and affect the shortcomings such as contact performance.

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 insurance box cover and manufacture method thereof, the automobile insurance box cover product in the time of moulding that the invention solves injection moulding is prone to and draws the physicals defects such as white, fracture, poor toughness, intensity be low, this Shooting Technique stability simultaneously, products obtained therefrom steady quality, improve production efficiency, reduced production cost.

The present invention adopts following technical scheme to achieve these goals:

Automobile insurance box cover, it is to obtain: A by the raw material mixing granulation reprocessing of following weight parts to expect 40-50, B expects 43-48;

Described A material is made by the raw material of following weight parts: nylon PA66 40-45, black masterbatch 0.3-0.5, ABS high glue powder 15-20, nano powder 5-7, polybutylene terephthalate 3-5, maleic anhydride graft PE4-6, Silane coupling agent KH550 0.6-0.8, dioctyl ester 0.3-0.5, bisphenol A polycarbonate 0.2-0.4, oxidation inhibitor 1035 0.3-0.5, two ten four carbon alcohols ester 0.1-0.3, polyethylene wax 0.3-0.5, lead sulfate tribasic 0.7-0.9;

Described B material is made by the raw material of following weight parts: nylon PA66 55-65, glass fibre 10-20, modified lime stone 5-10, dicumyl peroxide 0.3-0.5, Di(dioctylpyrophosphato) ethylene titanate 0.8-1.2, oxidation inhibitor DSTP 0.5-0.7, poly--4-methyl-1-pentene 0.3-0.5, clorafin 0.5-0.8, lead sulfate tribasic 0.2-0.4.

The manufacture method of automobile insurance box cover, comprises the following steps:

(1) preparation of material A:

Take all raw materials of material A by the weight part of constitutive material, then be placed in high-speed mixer and mixing 4-6min, the mixture obtaining adds in twin screw extruder through main spout, and controlled working temperature is at 250-280 ℃, screw rod revolution is at 450-650rpm, and after melting, extruding pelletization obtains material A;

(2) preparation of material B:

Take all raw materials of material B by the weight part of constitutive material, each raw material except glass fibre of getting B material is placed in high-speed mixer and mixing 3-5min, the mixture obtaining adds in twin screw extruder through main spout, glass fibre adds twin screw extruder by weight from side spout, controlled working temperature is at 250-275 ℃, screw rod revolution is at 350-500rpm, and after melting, extruding pelletization obtains material B;

(3) mixed injection molding:

After material A is mixed by proportioning with material B, carry out drying treatment, drying temperature is 80-90 ℃, and be 5-7 hour time of drying, then joins in injection moulding machine; The temperature of injection moulding machine heating zone is set: 280 ± 5 ℃ of first paragraphs, 275 ± 5 ℃ of second segments, the 3rd section 270 ± 5 ℃, the 4th section 265 ± 5 ℃, the 5th section 260 ± 5 ℃; Injection moulding section molding technique parameter is as follows:

A, first paragraph adopt the middle pressure of 45-55Mpa, the medium velocity injection of 40-50m/s, and be 1.0-1.5 second inject time, and injection glue amount is to the 73-78% of product;

B, second segment adopt the middle pressure of 55-60Mpa, the medium velocity injection of 40-50m/s, and be 0.8-1.2 second inject time, and injection glue amount is to 100% of water port of product;

(4) last moulding, the demoulding, to obtain final product.

Described nano powder is blended in scaling loss 4-5 hour at temperature 600-700 ℃ by calcium carbonate, celestite powder, feldspar in powder by 1:1:1, after grind to form nanometer powder, admix that to be equivalent to the Di(dioctylpyrophosphato) ethylene titanate agitating of powder weight 3-5% even, dry, be ground into powder.

The preparation technology of described modified lime stone is: first use 15-20% salt acid soak Wingdale 1-2 hour, leave standstill, clarification, centrifugal, solid washes with water to neutrality, after oven dry, add that to be equivalent to the 3-aminopropyl trimethoxysilane agitating of solid weight 3-5% even, dry, be ground into powder.

Beneficial effect of the present invention:

The automobile insurance box cover product in the time of moulding that the invention solves injection moulding is prone to and draws the physicals defects such as white, fracture, poor toughness, intensity be low, this Shooting Technique stability simultaneously, products obtained therefrom steady quality, has improved production efficiency, has reduced production cost.

Embodiment

Embodiment 1: automobile insurance box cover, it is to obtain: A by the raw material mixing granulation reprocessing of following weight parts to expect 40-50, B expects 43-48;

Described A material is made by the raw material of following weight parts: nylon PA66 40-45, black masterbatch 0.3-0.5, ABS high glue powder 15-20, nano powder 5-7, polybutylene terephthalate 3-5, maleic anhydride graft PE4-6, Silane coupling agent KH550 0.6-0.8, dioctyl ester 0.3-0.5, bisphenol A polycarbonate 0.2-0.4, oxidation inhibitor 1035 0.3-0.5, two ten four carbon alcohols ester 0.1-0.3, polyethylene wax 0.3-0.5, lead sulfate tribasic 0.7-0.9;

Described B material is made by the raw material of following weight parts: nylon PA66 55-65, glass fibre 10-20, modified lime stone 5-10, dicumyl peroxide 0.3-0.5, Di(dioctylpyrophosphato) ethylene titanate 0.8-1.2, oxidation inhibitor DSTP 0.5-0.7, poly--4-methyl-1-pentene 0.3-0.5, clorafin 0.5-0.8, lead sulfate tribasic 0.2-0.4.

The manufacture method of automobile insurance box cover, comprises the following steps:

(1) preparation of material A:

Take all raw materials of material A by the weight part of constitutive material, then be placed in high-speed mixer and mixing 4-6min, the mixture obtaining adds in twin screw extruder through main spout, and controlled working temperature is at 250-280 ℃, screw rod revolution is at 450-650rpm, and after melting, extruding pelletization obtains material A;

(2) preparation of material B:

Take all raw materials of material B by the weight part of constitutive material, each raw material except glass fibre of getting B material is placed in high-speed mixer and mixing 3-5min, the mixture obtaining adds in twin screw extruder through main spout, glass fibre adds twin screw extruder by weight from side spout, controlled working temperature is at 250-275 ℃, screw rod revolution is at 350-500rpm, and after melting, extruding pelletization obtains material B;

(3) mixed injection molding:

After material A is mixed by proportioning with material B, carry out drying treatment, drying temperature is 80-90 ℃, and be 5-7 hour time of drying, then joins in injection moulding machine; The temperature of injection moulding machine heating zone is set: 280 ± 5 ℃ of first paragraphs, 275 ± 5 ℃ of second segments, the 3rd section 270 ± 5 ℃, the 4th section 265 ± 5 ℃, the 5th section 260 ± 5 ℃; Injection moulding section molding technique parameter is as follows:

A, first paragraph adopt the middle pressure of 45-55Mpa, the medium velocity injection of 40-50m/s, and be 1.0-1.5 second inject time, and injection glue amount is to the 73-78% of product;

B, second segment adopt the middle pressure of 55-60Mpa, the medium velocity injection of 40-50m/s, and be 0.8-1.2 second inject time, and injection glue amount is to 100% of water port of product;

(4) last moulding, the demoulding, to obtain final product.

Described nano powder is blended in scaling loss 4-5 hour at temperature 600-700 ℃ by calcium carbonate, celestite powder, feldspar in powder by 1:1:1, after grind to form nanometer powder, admix that to be equivalent to the Di(dioctylpyrophosphato) ethylene titanate agitating of powder weight 3-5% even, dry, be ground into powder.

The preparation technology of described modified lime stone is: first use 15-20% salt acid soak Wingdale 1-2 hour, leave standstill, clarification, centrifugal, solid washes with water to neutrality, after oven dry, add that to be equivalent to the 3-aminopropyl trimethoxysilane agitating of solid weight 3-5% even, dry, be ground into powder.

The Performance Detection of the automobile insurance box cover making by above-described embodiment:

Claims (2)

1. an automobile insurance box cover, is characterized in that, it is to obtain: A by the raw material mixing granulation reprocessing of following weight parts to expect 40-50, and B expects 43-48;

Described A material is made by the raw material of following weight parts: nylon PA66 40-45, black masterbatch 0.3-0.5, ABS high glue powder 15-20, nano powder 5-7, polybutylene terephthalate 3-5, maleic anhydride graft PE4-6, Silane coupling agent KH550 0.6-0.8, dioctyl ester 0.3-0.5, bisphenol A polycarbonate 0.2-0.4, oxidation inhibitor 1035 0.3-0.5, two ten four carbon alcohols ester 0.1-0.3, polyethylene wax 0.3-0.5, lead sulfate tribasic 0.7-0.9;

Described B material is made by the raw material of following weight parts: nylon PA66 55-65, glass fibre 10-20, modified lime stone 5-10, dicumyl peroxide 0.3-0.5, Di(dioctylpyrophosphato) ethylene titanate 0.8-1.2, oxidation inhibitor DSTP ?0.5-0.7, poly--4-methyl-1-pentene 0.3-0.5, clorafin 0.5-0.8, lead sulfate tribasic 0.2-0.4;

Described nano powder is blended in scaling loss 4-5 hour at temperature 600-700 ℃ by calcium carbonate, celestite powder, feldspar in powder by 1:1:1, after grind to form nanometer powder, admix that to be equivalent to the Di(dioctylpyrophosphato) ethylene titanate agitating of powder weight 3-5% even, dry, be ground into powder;

The preparation technology of described modified lime stone is: first use 15-20% salt acid soak Wingdale 1-2 hour, leave standstill, clarification, centrifugal, solid washes with water to neutrality, after oven dry, add that to be equivalent to the 3-aminopropyl trimethoxysilane agitating of solid weight 3-5% even, dry, be ground into powder.

2. a manufacture method for automobile insurance box cover as claimed in claim 1, is characterized in that comprising the following steps:

(1) preparation of material A:

Take all raw materials of material A by the weight part of constitutive material, then be placed in high-speed mixer and mixing 4-6min, the mixture obtaining adds in twin screw extruder through main spout, and controlled working temperature is at 250-280 ℃, screw rod revolution is at 450-650rpm, and after melting, extruding pelletization obtains material A;

(2) preparation of material B:

Take all raw materials of material B by the weight part of constitutive material, each raw material except glass fibre of getting B material is placed in high-speed mixer and mixing 3-5min, the mixture obtaining adds in twin screw extruder through main spout, glass fibre adds twin screw extruder by weight from side spout, controlled working temperature is at 250-275 ℃, screw rod revolution is at 350-500rpm, and after melting, extruding pelletization obtains material B;

(3) mixed injection molding:

After material A is mixed by proportioning with material B, carry out drying treatment, drying temperature is 80-90 ℃, and be 5-7 hour time of drying, then joins in injection moulding machine; The temperature of injection moulding machine heating zone is set: 280 ± 5 ℃ of first paragraphs, 275 ± 5 ℃ of second segments, the 3rd section 270 ± 5 ℃, the 4th section 265 ± 5 ℃, the 5th section 260 ± 5 ℃; Injection moulding section molding technique parameter is as follows:

A, first paragraph adopt the middle pressure of 45-55Mpa, the medium velocity injection of 40-50m/s, and be 1.0-1.5 second inject time, and injection glue amount is to the 73-78% of product;

B, second segment adopt the middle pressure of 55-60Mpa, the medium velocity injection of 40-50m/s, and be 0.8-1.2 second inject time, and injection glue amount is to 100% of water port of product;

(4) last moulding, the demoulding, to obtain final product.