CN103642209A - Waterproof temperature-resistant modified nylon material for automobile plastic members - Google Patents

Abstract

The invention belongs to the field of high-molecular materials, and specifically relates to a waterproof temperature-resistant modified nylon material for automobile plastic members. The material is prepared from the following raw materials in parts by weight: 100 parts of nylon 12, 12-14 parts of chopped glass fibre, 5-6 parts of octadecanamide, 5-6 parts of ammonium polyphosphate, 12-14 parts of bentonite, 10-20 parts of dimethyl trimethylsilylmethylphosphonate, 30-50 parts of melamine cyanurate, 10-12 parts of antimonony oxide, 23-25 parts of polystyrene, 8-10 parts of montmorillonite, 5-6 parts of ricinoleic acid and 12-15 parts of an auxiliary agent. The material combines the advantages of the raw materials such as nylon 12, polystyrene and the like; and the prepared material is tough, pliable, high in hardness, ling in mass, low in water absorption rate, waterproof, moistureproof, resistant to low-temperature and high-temperature ageing, and safe and reliable to use, and is widely applicable to prepare various automobile plastic members, and is especially applicable to automobile members in environment with relatively high temperature or relatively high humidity.

Description

Waterproof heatproof modified nylon materials for a kind of automotive plastic parts

Technical field

The invention belongs to polymeric material field, be specifically related to waterproof heatproof modified nylon 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, waterproof heatproof modified nylon materials for a kind of automotive plastic parts is 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:

Waterproof heatproof modified nylon materials for a kind of automotive plastic parts, it is characterized in that, material of the present invention is made minute by following weight part raw material: nylon 12 100, short glass fiber 12-14, stearic amide 5-6, ammonium polyphosphate 5-6, wilkinite 12-14, trimethylsilyl dimethyl methyl phosphonate 10-20, melamine cyanurate 30-50, antimonous oxide 10-12, polystyrene 23-25, polynite 8-10, ricinolic acid 5-6, auxiliary agent 12-15.

Described auxiliary agent is made by the raw material of following weight part: clay 300-320, silicon carbide 9-11, jade powder 6-8, oxidation inhibitor 565 0.2-0.5, trimethylolethane 6-8, polyisobutene 3-4, N-(β mono-aminoethyl)-γ-aminopropyl front three (second) TMOS 2-3, nonylphenol 2-3, isophorone diisocyanate 2-4, hydroxyethyl methylacrylate 8-10, aluminium hydroxide 8-10, Syzygium aromaticum stem oil 1-2, calcium stearate 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.

Waterproof heatproof modified nylon materials for described a kind of automotive plastic parts, its preparation method is:

(1) polystyrene, trimethylsilyl dimethyl methyl phosphonate, polynite, auxiliary agent mixed melting were stirred after 10-15 minute, send into twin screw extruder granulation, obtain A material;

(2) nylon 12, short glass fiber and other remaining component mixed melting were stirred after 5-8 minute, send into extruding pelletization on 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, polystyrene, has improved the performance of conventional nylon material, makes it have good mechanical property, the material obtaining is firm pliable and tough, hardness is high, and quality is light, and water-intake rate is low, water-blocking moistureproof, low temperature resistant high temperature ageing, electrical insulating property is good, safe and reliable, 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, short glass fiber 14, stearic amide 6, ammonium polyphosphate 6, wilkinite 14, trimethylsilyl dimethyl methyl phosphonate 18, melamine cyanurate 45, antimonous oxide 12, polystyrene 25, polynite 10, ricinolic acid 6, auxiliary agent 15.

Described auxiliary agent is made by the raw material of following weight part: clay 300, silicon carbide 9, jade powder 6, oxidation inhibitor 565 0.2, trimethylolethane 8, polyisobutene 4, N-(β mono-aminoethyl)-γ-aminopropyl front three (second) TMOS 3, nonylphenol 2, isophorone diisocyanate 2, hydroxyethyl methylacrylate 8, aluminium hydroxide 8, Syzygium aromaticum stem oil 1, calcium stearate 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.

Waterproof heatproof modified nylon materials for described a kind of automotive plastic parts, its preparation method is:

(1) polystyrene, trimethylsilyl dimethyl methyl phosphonate, polynite, auxiliary agent mixed melting were stirred after 12 minutes, send into twin screw extruder granulation, obtain A material;

(2) nylon 12, short glass fiber and other remaining component mixed melting were stirred after 8 minutes, send into extruding pelletization on 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 106.4MPa, and elongation at break is 35%, and flexural strength is 120MPa, modulus in flexure 7500MPa, and shock strength is 57.3KJ/m ², after water soaking 48h, the pick up of material is 0.013%, and heat-drawn wire (1.82MPa) is 220 ℃, and minimum use temperature can reach-40 ℃.

Claims (2)

1. waterproof heatproof modified nylon 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, short glass fiber 12-14, stearic amide 5-6, ammonium polyphosphate 5-6, wilkinite 12-14, trimethylsilyl dimethyl methyl phosphonate 10-20, melamine cyanurate 30-50, antimonous oxide 10-12, polystyrene 23-25, polynite 8-10, ricinolic acid 5-6, auxiliary agent 12-15;

Described auxiliary agent is made by the raw material of following weight part: clay 300-320, silicon carbide 9-11, jade powder 6-8, oxidation inhibitor 565 0.2-0.5, trimethylolethane 6-8, polyisobutene 3-4, N-(β mono-aminoethyl)-γ-aminopropyl front three (second) TMOS 2-3, nonylphenol 2-3, isophorone diisocyanate 2-4, hydroxyethyl methylacrylate 8-10, aluminium hydroxide 8-10, Syzygium aromaticum stem oil 1-2, calcium stearate 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. waterproof heatproof modified nylon materials for a kind of automotive plastic parts as claimed in claim 1, its manufacture craft is:

(1) polystyrene, trimethylsilyl dimethyl methyl phosphonate, polynite, auxiliary agent mixed melting were stirred after 10-15 minute, send into twin screw extruder granulation, obtain A material;

(2) nylon 12, short glass fiber and other remaining component mixed melting were stirred after 5-8 minute, send into extruding pelletization on twin screw extruder, obtain B material;

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