CN111073210B - Permanent antistatic noise-reducing ABS resin composition and preparation method thereof - Google Patents

Abstract

The invention relates to a permanent antistatic noise-reducing ABS resin composition and a preparation method thereof. The addition of the compatilizer improves the compatibility between the ABS resin and the antistatic resin, and enables the antistatic resin to form a more stable interpenetrating network structure in a resin composition system, so that the ABS resin composition with antistatic and low-noise characteristics and excellent comprehensive performance is obtained, and the ABS resin composition is very suitable for being applied to the fields of automobiles, household appliances and the like.

Description

Permanent antistatic noise-reducing ABS resin composition and preparation method thereof

Technical Field

The invention belongs to the field of resin compositions, and particularly relates to a permanent antistatic noise-reducing ABS resin composition and a preparation method thereof.

Background

ABS (acrylonitrile-butadiene-styrene) is an acrylonitrile-butadiene-styrene terpolymer, and the ABS resin coordinates the superior performances of the three components, so that the ABS resin has excellent impact strength, good processability and chemical stability, is easy to mold and form, has rich luster, has toughness and flexibility and has excellent comprehensive performance. ABS resin is widely used in automobile industry, electronic and electric appliance industry, light industry and household appliances, textile industry, building industry and other industries due to its excellent comprehensive properties. In recent years, the automobile industry has more and more high attention to noise in an automobile and dust contamination of parts in the automobile, the noise in the automobile mainly comes from extrusion of combined parts in the automobile and friction among the parts, and the greater noise in the automobile directly influences physical and mental health of a driver and passengers, and even influences driving safety. Parts in the automobile are easy to be polluted by dust, so that the appearance is not only influenced, but also the health of people is influenced when the parts are excessively accumulated.

In order to improve the noise problem in the vehicle, a general method is to reduce the noise by using grease or felt, but this method is complicated in process, high in cost, and cannot achieve a durable noise-proof effect. Chinese patent CN102229736A discloses a lightweight noise-reduction modified ABS material, wherein a hollow particle type inorganic filler is added in a formula, and the special structure of the hollow particles enables the material to have a certain noise reduction function, and meanwhile, the material density is very low, so that the lightweight noise-reduction modified ABS material has a very high application value for automobile lightweight, shock absorption, noise reduction and the like. In the aspect of antistatic property, a more ideal antistatic effect can be obtained by adding an antistatic agent. Chinese patent CN107629385A discloses a low-odor antistatic ABS composite material, which is endowed with low odor and antistatic properties by introducing a small-molecule deodorant and stearic acid mono-glycol, and can prevent the adsorption of dust particles on the surface of a plastic part caused by static accumulation. Noise reduction is carried out by adding hollow particles, and the hollow particles are easily sheared and broken by a screw rod in the extrusion process, so that the noise reduction effect is lost, and the physical properties of the material are also deteriorated. And the small molecule antistatic has certain requirements on humidity, and meanwhile, the antistatic effect is gradually weakened due to the failure of the antistatic agent along with the prolonging of time.

Disclosure of Invention

The invention aims to solve the technical problem of providing a permanent antistatic noise-reducing ABS resin composition and a preparation method thereof, which can obviously improve the antistatic and noise-reducing performance of ABS resin, and can replace common ABS plastic on parts such as automobile household appliances to prevent dust pollution and reduce noise.

The invention provides a permanent antistatic noise-reducing ABS resin composition, which comprises the following components in percentage by weight:

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the ABS resin is prepared by adopting one or two of bulk polymerization or emulsion polymerization.

The heat-resistant agent is an N-phenylmaleimide polymer.

The antistatic resin is a block copolymer thermoplastic elastomer with a polyamide hard segment and a polyether soft segment.

The auxiliary agent is one or more of an antioxidant, a light stabilizer, a lubricant and toner.

The antioxidant is hindered phenol antioxidant and phosphite antioxidant; the light stabilizer is a combination of benzotriazole UV absorbers and high molecular weight hindered amine; the lubricant is pentaerythritol stearate.

The invention provides a preparation method of a permanent antistatic noise reduction ABS resin composition, which comprises the following steps:

firstly, uniformly mixing all the components according to a ratio, then adding the mixture into a double-screw extruder, and performing melt blending extrusion granulation to obtain the composite material; wherein the melting temperature is 220-245 ℃.

Advantageous effects

The ABS resin can be endowed with permanent antistatic and noise reduction characteristics by introducing the special compatilizer and the antistatic resin. The antistatic resin can play an antistatic role, and the special compatilizer can improve the compatibility of the antistatic resin and the ABS resin, and in addition, the antistatic resin can form a more stable interpenetrating network structure with high damping property in a system due to the intermolecular hydrogen bond function, so that the prepared ABS resin composition has the characteristics of permanent antistatic and noise reduction, and has excellent mechanical property and processability; the resin composition has simple preparation process and low equipment requirement, is suitable for industrial production, and can be widely applied to the fields of automobile household appliances and the like.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

The raw materials in the examples are:

ABS resin 1, continuous bulk process production, shanghai high bridge petrochemical company, designation ABS 8434;

ABS resin 2, manufactured by emulsion method, korea brocade lake petrochemical, trade mark HR-181;

heat resistance agent, N-phenyl maleimide polymer, japan electric chemistry, trade name MS-NI;

a compatibilizer, SAN-g-amine resin, commercially available;

antistatic resins, pebax resins, acra;

the antioxidant is a mixture of hindered phenol antioxidant and phosphite ester antioxidant, and is produced and provided by Ciba company;

the light stabilizer is prepared by mixing ultraviolet light absorber and high molecular weight hindered amine according to 1:1, wherein the ultraviolet light absorber is selected from Tinuvin 328 of Ciba company, and the high molecular weight hindered amine is selected from CHIMASSORB 944FDL of Ciba company;

the lubricant is pentaerythritol stearate, which is available from LOZA corporation under the trademark GLYCOLUBE-P.

Examples 1 to 5 and comparative examples l to 2

The ABS resin, heat-resistant agent, compatilizer, antistatic resin, antioxidant, light stabilizer and lubricant which are dried are mixed according to the composition formula in the table 1 and then added into a main machine cylinder of a double-screw extruder (the diameter of a screw is 35mm, and the length-diameter ratio L/D = 48). The temperature of each section of the main machine cylinder (from the feed inlet to the outlet of the machine head) is controlled to be 220 ℃, 230 ℃, 240 ℃, 245 ℃ and 240 ℃, the rotating speed of the double screw is 300 revolutions per minute, and the extruded material strip is cooled by a water tank and then cut into granules to obtain the product of the invention.

TABLE 1 compositional formula (parts by weight)

Drying the product in a forced air oven at 80 ℃ for 4 hours, and then performing injection molding to obtain standard sample bars and 100mmx 3mm sample plates by using a plastic injection molding machine, wherein the injection molding temperature is 240 ℃; the injection molded bars and plaques were tested for performance after standing at 23 ℃ for at least 24 hours at 50% relative humidity.

The product performance test method comprises the following steps:

the Charpy impact strength is tested according to the ISO 179 standard;

the Vicat softening point is tested according to the ISO 306 standard;

flexural modulus, tested according to ISO 178 standard;

melt index, measured according to ISO 1133 standard;

surface resistivity, measured according to ISO 3915 standard;

the noise hazard value was evaluated and tested according to the German society for automotive industry.

The results of the performance tests on each sample are shown in table 2.

Table 2 results of performance testing

Note: noise hazard value of 10 segments, 1-3 low risk, 4-5 gray areas, 6-10 high risk

As can be seen from table 2: compared with the comparative example, the ABS resin composition prepared by the invention can obviously reduce the surface resistivity by adding the antistatic resin, and can reduce the noise hazard value to a certain degree. It is worth noting that the compatilizer and the antistatic resin are added at the same time, the compatilizer can enhance the dispersion of the antistatic resin, and the hydrogen bond effect between the special compatilizer and the antistatic resin enables the special compatilizer and the antistatic resin to form a firmer interpenetrating network structure with high damping performance, so that the prepared ABS resin composition has the characteristics of permanent antistatic and noise reduction, and is excellent in comprehensive performances such as mechanical processing, and the prepared permanent antistatic noise reduction ABS resin can be applied to the fields of automobiles, household appliances and the like.

The examples are given solely for the purpose of illustration and are not to be construed as limitations of the present invention, as many insubstantial modifications and adaptations of the invention may be made by those skilled in the art based on the teachings herein.

Claims (5)

1. A permanent antistatic noise-reducing ABS resin composition is characterized in that: the composition comprises the following components in percentage by weight:

48.7% -89.5% of ABS resin;

5% -20% of a heat-resistant agent;

5% -15% of a compatilizer;

5% -15% of antistatic resin;

0.5-1.5% of auxiliary agent, wherein the sum of the weight percentages of the components is 100%; wherein the compatilizer is modified styrene-acrylonitrile resin; the heat-resistant agent is an N-phenylmaleimide polymer; the antistatic resin is a block copolymerization thermoplastic elastomer with a polyamide hard segment and a polyether soft segment.

2. The ABS resin composition according to claim 1, characterized in that: the ABS resin is prepared by adopting one or two of bulk polymerization or emulsion polymerization.

3. The ABS resin composition according to claim 1, wherein: the auxiliary agent is one or more of an antioxidant, a light stabilizer, a lubricant and toner.

4. The ABS resin composition according to claim 3, wherein: the antioxidant is hindered phenol antioxidant or phosphite antioxidant; the light stabilizer is a combination of benzotriazole UV absorbers and high molecular weight hindered amine; the lubricant is pentaerythritol stearate.

5. A method for preparing the permanent antistatic noise-reducing ABS resin composition of claim 1, comprising:

firstly, uniformly mixing all the components according to a ratio, then adding the mixture into a double-screw extruder, and performing melt blending extrusion granulation to obtain the composite material; wherein the melting temperature is 220-245 ℃.