CN104592667A - High- fluidity and high-impact ASA material and preparation method thereof - Google Patents

Abstract

The invention discloses a high-fluidity and high-impact ASA material and a preparation method thereof and belongs to the field of polymer composite materials. The ASA material comprises the following raw materials in percentage by weight: 60-80% of an acrylonitrile-styrene copolymer, 20-40% of an acrylonitrile-styrene-acrylate graft copolymer, 2-10% of a compatibilizer, 0.2-1% of an antioxidant and 0.2-2% of a light stabilizer. The ASA material prepared by the preparation method has high impact performance and good processing fluidity, is easy to fill molded large-size abrasive tools and can be widely applied to interior and exterior decorative parts of automobiles and parts of electronic electric appliances.

Description

A kind of high flowing, high-impact ASA material and preparation method thereof

Technical field

The present invention relates to a kind of high flowing, high-impact ASA material and preparation method thereof, be specially one and can be applicable to inner and outer decorative parts of automobile, the flowing of electronic apparatus component height, high-impact ASA material, belong to polymer modification and manufacture field.

Background technology

The ternary graft copolymer that ASA resin is made up of Acrylate-styrene bipolymer-vinyl cyanide, there is excellent over-all properties, there are good mechanical and physical performance, resistance to elevated temperatures, static resistance, and it has excellent weathering resistance, its weathering resistance is higher than ABS about 10 times, of many uses, be widely used in the fields such as automobile, electronic apparatus, outdoor equipment.

But ASA material is lower in shock resistance, limit its application at automobile exterior trimming parts, as automobile grills etc.; ASA material flowability is also poor, and not simple filler on large size grinding tool, further limit the application of its automotive upholstery, as automobile door plate etc.

PC resin is added in the general measure of current raising ASA material shock resistance, but the shortcoming of this method increases the formed machining difficulty of ASA material further by adding PC.In addition, in order to ASA material solves the poor problem of mobility, traditional terms of settlement suitably improves injection temperature in Shooting Technique, improve its processing fluidity, but this too increases tooling cost virtually.Therefore it is very necessary for developing a kind of ASA material not only having had high flowing high impact property but also can save tooling cost.

Summary of the invention

The object of the invention is to provide a kind of high flowing, high-impact ASA material and preparation method thereof.

To achieve these goals, the present invention by the following technical solutions.

A kind of high flowing, high-impact ASA material, form according to the raw material of following weight percent:

The solution flow rate of described acrylonitritrile-styrene resin is at 10 ~ 60g/10min, and test condition is: 220 DEG C × 10kg.

Described acrylonitrile-styrene-acrylic ester graft copolymer by weight percentage acrylic elastomer content 40 ~ 80%.

Described compatilizer is styrene-maleic anhydride copolymer.

Described oxidation inhibitor is one or more in Hinered phenols and phosphoric acid ester oxidation inhibitor.

Described photostabilizer is one or more in hindered amine light stabilizer.

The preparation method of above-mentioned height flowing, high-impact ASA material, the steps include:

(1) take raw material by above-mentioned weight percent, mix;

(2) raw material after mixing is put in the main barrel of twin screw extruder, screw diameter 35mm, length-to-diameter ratio L/D=36, machine barrel Discrete control temperature, from charging opening to head, outlet is 190 DEG C, 220 DEG C, 225 DEG C, 225 DEG C, 225 DEG C, 225 DEG C, engine speed is 300 revs/min, through melt extruding, tank cooling, drying treatment, obtains product after the operation such as pelletizing.

Advantage of the present invention is:

1, the ASA material that prepared by the present invention has high flowing high-impact performance;

2, the height that the present invention proposes flows, the preparation technology of high-impact ASA material is comparatively simple, and production cost is lower can be applicable to inner and outer decorative parts of automobile, electronic apparatus etc.

Embodiment

Below by specific embodiment, the present invention is further illustrated, but described embodiment is only for illustration of the present invention instead of limitation of the present invention.

The embodiment of the present invention is raw materials used:

SAN-1: acrylonitritrile-styrene resin, model DN89, melt flow rate (MFR) at 10 ~ 20g/10min (220 DEG C × 10kg), Ben Ling company;

SAN-2: acrylonitritrile-styrene resin, model DN59, melt flow rate (MFR) at 40 ~ 60g/10min (220 DEG C × 10kg), Ben Ling company;

960A: acrylonitrile-styrene-acrylic ester graft copolymer, glue content 60%, GE company of the U.S.;

SMA-218HF: compatilizer, styrene-maleic anhydride copolymer, Nanjing Yin Xin Chemical Co., Ltd.;

168: phosphoric acid ester oxidation inhibitor, Ciba company of Switzerland;

UV-770: hindered amine light stabilizer, Ciba company of Switzerland.

Product performance testing method of the present invention is as follows:

By the particulate material prepared as stated above, drying 3 ~ 4 hours in the convection oven of 80 ~ 90 DEG C, and then dried particulate material is carried out injection molding sample preparation on injection moulding machine.

Melt flow rate (MFR) is tested: undertaken by ISO 1133-1 standard, condition is 220 DEG C × 10kg.

Simply supported beam notched Izod impact strength is tested: undertaken by ISO 179-1 standard, specimen size is 80*10*4mm.

Tensile strength is tested: undertaken by ISO 527-2 standard, specimen size is 170*10*4mm, and draw speed is 50mm/min.

Flexural strength is tested: undertaken by ISO 178 standard, specimen size is 80*10*4mm, and rate of bending is 2mm/min, and span is 64mm.

Vicat softening temperature is tested: undertaken by ISO 306 standard, specimen size is 10*10*4mm, and load is 5kg.

The flowing property of material is passed judgment on by the numerical value of the melt flow rate (MFR) of testing gained.

The mechanical property of material by test the notched Izod impact strength of gained, tensile strength, flexural strength numerical value pass judgment on.

The thermal characteristics of material is passed judgment on by the numerical value of the vicat softening temperature recorded.

The formula of embodiment and comparative example and properties test result are shown in lower each table:

Table 1 embodiment 1 ~ 5 and comparative example 1 ~ 3 material prescription table (% by weight)

Table 2 embodiment 1 ~ 5 and comparative example 1 ~ 3 test result

By comparing embodiment 1,2,3 and comparative example 1,2,3 known, high flowing SAN adds the melt flow rate (MFR) significantly improving ASA material, and along with the increase gradually of height flowing SAN, the melt flow rate (MFR) of ASA material increases gradually.By comparing embodiment 2,4,5 and comparative example 1,2,3 known, SMA-218HF adds the shock resistance significantly improving ASA material, and along with the increase gradually of SMA-218HF, the shock resistance of ASA material is also more and more higher, this is because SMA-218HF serves the effect of compatilizer in material polymerization process, strengthen the interface binding power of acrylonitritrile-styrene resin and acrylonitrile-styrene-acrylic ester graft copolymer, thus improve the impact resistance of ASA material.Height flowing provided by the invention, high-impact ASA material can meet the requirement to material high-impact performance such as inner and outer decorative parts of automobile, electronic apparatus, well overcome again the weakness that ASA material flowability difference difficulty shapes, the height flowing high-impact ASA material that therefore prepared by the present invention can widen the use field of ASA material better.

Claims (7)

1. high flowing, a high-impact ASA material, is characterized in that: form according to the raw material of following weight percent:

2. a kind of high flowing according to claim 1, high-impact ASA material, is characterized in that: the solution flow rate of described acrylonitritrile-styrene resin is at 10 ~ 60g/10min, and test condition is: 220 DEG C × 10kg.

3. a kind of high flowing according to claim 1, high-impact ASA material, is characterized in that: described acrylonitrile-styrene-acrylic ester graft copolymer by weight percentage acrylic elastomer content 40 ~ 80%.

4. a kind of high flowing according to claim 1, high-impact ASA material, is characterized in that: described compatilizer is styrene-maleic anhydride copolymer.

5. a kind of high flowing according to claim 1, high-impact ASA material, is characterized in that: described oxidation inhibitor is one or more in Hinered phenols and phosphoric acid ester oxidation inhibitor.

6. a kind of high flowing according to claim 1, high-impact ASA material, is characterized in that: described photostabilizer is one or more in hindered amine light stabilizer.

7. prepare a method for one of any described height flowing of claim 1-6, high-impact ASA material, it is characterized in that: the steps include:

(1) take raw material by claim 1 proportioning, mix;

(2) raw material after mixing is put in the main barrel of twin screw extruder, screw diameter 35mm, length-to-diameter ratio L/D=36, machine barrel Discrete control temperature, from charging opening to head, outlet is 190 DEG C, 220 DEG C, 225 DEG C, 225 DEG C, 225 DEG C, 225 DEG C, engine speed is 300 revs/min, through melt extruding, tank cooling, drying treatment, obtains product after the operation such as pelletizing.