CN103665841A - Antistatic waterproof modified nylon 12 material for automobile plastic part - Google Patents

Abstract

The invention belongs to the field of high polymer materials, and particularly relates to an antistatic waterproof modified nylon 12 material for an automobile plastic part. The material is prepared from the following raw materials in parts by weight: 100 parts of nylon 12, 7-9 parts of diethyl terephthalate, 15-18 parts of high-density polyethylene, 7-9 parts of ultrafine talcum powder, 3-4 parts of diaminodiphenylmethane, 2-3 parts of diammonium hydrogen phosphate, 6-8 parts of borax, 5-8 parts of rutile titanium white, 1-2 parts of hydrophobic silicon dioxide, 1.6-1.8 parts of antioxidant DSTP, 2-3 parts of stearic acid, 4-6 parts of dibutyl phthalate and 12-15 parts of assistant. According to the invention, the modified nylon 12 material combines the advantages of the raw materials such as the nylon 12, the high-density polyethylene and the like, and improves the performance of the traditional nylon 12 material. Besides, the raw materials such as the rutile titanium white, the hydrophobic silicon dioxide and the like are added, so that the prepared material is high in hardness, waterproof, dampproof, favorable in electric property, antistatic, heat-resistant, light-resistant and long in service life, and can be widely used in manufacturing of various automobile plastic parts.

Description

Proof antistatic water modification of nylon 12 materials for a kind of automotive plastic parts

Technical field

The invention belongs to polymeric material field, be specifically related to proof antistatic water modification of nylon 12 materials and preparation method thereof for a kind of automotive plastic parts.

Background technology

Development along with automobile industry, the comfortableness of people to automobile, security, aesthetic property, the requirement of the use propertieies such as energy saving is more and more higher, and improvement orthodox car material, it is the fundamental way of improving vehicle operation performance, macromolecular automobile plastic material has many outstanding advantages than orthodox car material, quality is light, mechanical property is superior, easily machine-shaping, material can reuse, also there is remarkable attractive, decorative effect, yet also there are some shortcomings in these macromolecular materials, such as rigidity is poor, easily burning, non-refractory low temperature aging etc., therefore, in order to improve the performance of traditional macromolecular material, widen materials'use scope, need to improve original automotive plastic formula, material is carried out to modification, can be widely used in each position of automobile.

Summary of the invention

The object of the invention is to, proof antistatic water modification of nylon 12 materials for a kind of automotive plastic parts are provided, promoted the performance of conventional nylon material, make it possess good mechanical property, can adapt to specific environment for use, to achieve these goals, the technical solution used in the present invention is as follows:

Proof antistatic water modification of nylon 12 materials for a kind of automotive plastic parts, it is characterized in that, material of the present invention is made by the raw material of following weight part: nylon 12 100, diethyl terephthalate 7-9, high density polyethylene(HDPE) 15-18, superfine talcum powder 7-9, diaminodiphenylmethane 3-4, Secondary ammonium phosphate 2-3, borax 6-8, rutile titanium white powder 5-8, water drain silica 1-2, oxidation inhibitor DSTP 1.6-1.8, stearic acid 2-3, dibutyl phthalate 4-6, auxiliary agent 12-15.

Described auxiliary agent is made by the raw material of following weight part: clay 300-320, limestone powder 3-4, jade powder 20-24, tri (propylene glycol) diacrylate 3-4, ZrO ₂1-2, SnO ₂1-2, B ₂o ₃5-7, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester 2-3, aluminium hydroxide 8-10, Syzygium aromaticum stem oil 1-2, polyisobutene 1-2; Preparation method puts into calcining furnace by clay to calcine 3-4 hour at 710-740 ℃, cooling, puts into 10-12% hydrochloric acid soln and soaks 1-2 hour, filter and take out, with clear water, clean and dry, be ground into 200-400 order powder, mix with other remaining component, grinding distribution is even, obtains.

Proof antistatic water modification of nylon 12 materials for described a kind of automotive plastic parts, its preparation method is:

(1) high density polyethylene(HDPE), superfine talcum powder, diethyl terephthalate, auxiliary agent mixed melting were stirred after 10-15 minute, send into twin screw extruder granulation, obtain A material;

(2) nylon 12, rutile titanium white powder and other remaining component mixed melting were stirred after 5-8 minute, send into extruding pelletization in twin screw extruder, obtain B material;

(3) after A, B material is mixed, on twin screw extruder, melt extrude granulation, obtain.

The present invention combines the advantage of the raw materials such as nylon 12, high density polyethylene(HDPE), improved the performance of conventional nylon 12 materials, make it have good processing characteristics and mechanical property, in addition, the interpolation of the raw materials such as rutile titanium white powder, water drain silica, make high, the anti-water resistance tide of material hardness, the electrical property of preparation good, anti-electrostatic, heat-resisting fast light, long service life, can meet specific environment for use condition, market application foreground is wide.

Embodiment

Embodiment

The present embodiment material is made by the raw material of following weight part: nylon 12 100, diethyl terephthalate 8, high density polyethylene(HDPE) 18, superfine talcum powder 8, diaminodiphenylmethane 4, Secondary ammonium phosphate 3, borax 8, rutile titanium white powder 8, water drain silica 2, oxidation inhibitor DSTP 1.8, stearic acid 3, dibutyl phthalate 6, auxiliary agent 5.

Described auxiliary agent is made by the raw material of following weight part: clay 300, limestone powder 4, jade powder 20, tri (propylene glycol) diacrylate 3, ZrO ₂2, SnO ₂1, B ₂o ₃5, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester 3, aluminium hydroxide 8, Syzygium aromaticum stem oil 2, polyisobutene 2; Preparation method puts into calcining furnace by clay at 740 ℃, to calcine 4 hours, cooling, puts into 12% hydrochloric acid soln and soaks 2 hours, filters and takes out, and with clear water, cleans and dries, and is ground into 400 order powder, mixes with other remaining component, and grinding distribution is even, obtains.

Proof antistatic water modification of nylon 12 materials for described a kind of automotive plastic parts, its preparation method is:

(1) high density polyethylene(HDPE), superfine talcum powder, diethyl terephthalate, auxiliary agent mixed melting were stirred after 12 minutes, send into twin screw extruder granulation, obtain A material;

(2) nylon 12, rutile titanium white powder and other remaining component mixed melting were stirred after 8 minutes, send into extruding pelletization in twin screw extruder, obtain B material;

(3) after A, B material is mixed, on twin screw extruder, melt extrude granulation, obtain.

The performance test results of material of the present invention is: tensile strength is 108MPa, and elongation at break is 42.5%, and flexural strength is 115MPa, modulus in flexure 5200MPa, and shock strength is 62.3KJ/m ²heat-drawn wire (1.82MPa) is 230 ℃, under-70 ℃ of conditions, after bending, do not ftracture, after 136 ℃ * 168h hot air aging, stretching strength retentivity 94.2%, elongation at break conservation rate is 90.3%, after water soaking 48h, the pick up of material is that 0.0021%, 20 ℃ of volume specific resistance is 3.21 * 10 ⁹Ω m, after the artificial weathering of 1000h, tensile strength and elongation at break are respectively 91.7MPa, 39.2%.

Claims (2)

1. proof antistatic water modification of nylon 12 materials for an automotive plastic parts, it is characterized in that, this material is made by the raw material of following weight part: nylon 12 100, diethyl terephthalate 7-9, high density polyethylene(HDPE) 15-18, superfine talcum powder 7-9, diaminodiphenylmethane 3-4, Secondary ammonium phosphate 2-3, borax 6-8, rutile titanium white powder 5-8, water drain silica 1-2, oxidation inhibitor DSTP 1.6-1.8, stearic acid 2-3, dibutyl phthalate 4-6, auxiliary agent 12-15;

Described auxiliary agent is made by the raw material of following weight part: clay 300-320, limestone powder 3-4, jade powder 20-24, tri (propylene glycol) diacrylate 3-4, ZrO ₂1-2, SnO ₂1-2, B ₂o ₃5-7, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester 2-3, aluminium hydroxide 8-10, Syzygium aromaticum stem oil 1-2, polyisobutene 1-2; Preparation method puts into calcining furnace by clay to calcine 3-4 hour at 710-740 ℃, cooling, puts into 10-12% hydrochloric acid soln and soaks 1-2 hour, filter and take out, with clear water, clean and dry, be ground into 200-400 order powder, mix with other remaining component, grinding distribution is even, obtains.

2. proof antistatic water modification of nylon 12 materials for a kind of automotive plastic parts as claimed in claim 1, its manufacture craft is:

(1) high density polyethylene(HDPE), superfine talcum powder, diethyl terephthalate, auxiliary agent mixed melting were stirred after 10-15 minute, send into twin screw extruder granulation, obtain A material;

(2) nylon 12, rutile titanium white powder and other remaining component mixed melting were stirred after 5-8 minute, send into extruding pelletization in twin screw extruder, obtain B material;

(3) after A, B material is mixed, on twin screw extruder, melt extrude granulation, obtain.