CN103396618B - A kind of anti-static plastic and preparation method thereof - Google Patents

Abstract

The invention discloses a kind of anti-static plastic and preparation method thereof, it is made according to mass fraction proportioning primarily of following raw materials according: 110-130 mass parts PVC, 30-35 mass parts PP, 30-40 mass parts ABS, 10-15 mass parts fatty group sulfonate, 5-8 mass parts tribasic lead sulfate, 4-8 mass parts of catalyst, 5-10 mass parts static inhibitor, 10-20 mass parts of carbon black, 6-10 mass parts methylol aliphatic amide, 10-20 mass parts anti-impact modifier, 10-15 mass parts graphite, 3-6 mass parts promotor, 5-10 mass parts dibasic lead phosphite and 1-5 mass parts white oil.After each component fully being mixed, add fusion plastification granulation under certain condition in twin screw extruder; By pellet injection moulding under certain condition.The inventive method technique is simple, be convenient to scale operation, and the notched Izod impact strength of product, flexural strength and hardness is high, and good static resistance.

Description

A kind of antistatic plastic and preparation method thereof

technical field

The invention belongs to the field of polymer materials, and in particular relates to an antistatic plastic.

technical background

Plastic material is a material with good performance. Because plastic has the advantages of light weight, no rust, and good insulation, it is used in many aspects of electronic product production. Plastic is easy to process, has good dimensional stability and surface gloss, and is easy to paint. Coloring, widely used in the field of electronic appliances. In recent years, in the electronic and electrical market, plastics have to maintain their position in the electronic and electrical market, and their performance must be improved. For example, the generation of static electricity will bring many troubles, such as electrostatic discharge, which will harm electronic equipment, cause various failures of equipment, and shorten the service life. With the expansion of the market for electronic and electrical products, the demand for anti-static and heat-conducting plastics is increasing, such as circuit board materials, electronic isolation boards, and casings for mobile communication equipment. However, general-purpose plastics on the market have low thermal conductivity, low operating temperature, high hardness of fillers, great wear and tear on equipment, and are prone to static electricity.

The quality of the existing antistatic plastics on the market is unstable, its bending strength and hardness are not high, and its service life is short, which cannot meet the requirements of the existing market for materials; and some plastics with better effects have undergone complicated processes. Made, but the product cost is too high. For example, Chinese patent 201210311205.2 discloses a formula for antistatic plastics and a formula for antistatic modified plastics disclosed in 201210261587.2. The antistatic plastics disclosed in these two patents have low bending strength and hardness and short service life. .

Contents of the invention

The object of the present invention is to overcome the deficiencies of the prior art, and provide an antistatic plastic and its preparation method. The antistatic plastic has good antistatic properties, and also has the characteristics of notched impact strength, bending strength and high hardness.

The purpose of the present invention is achieved through the following technical solutions: an antistatic plastic, which is made of the following raw materials according to the ratio of parts by mass: 110-130 parts by mass of PVC, 30-35 parts by mass of PP, 30-40 parts by mass ABS, 10-15 parts by mass of aliphatic sulfonate, 5-8 parts by mass of tribasic lead sulfate, 4-8 parts by mass of catalyst, 5-10 parts by mass of antistatic agent, 10-20 parts by mass of carbon black, 6- 10 parts by mass of hydroxymethyl aliphatic amine, 10-20 parts by mass of impact modifier, 10-15 parts by mass of graphite, 3-6 parts by mass of promoter, 5-10 parts by mass of dibasic lead phosphite and 1-5 parts by mass parts by mass of white oil.

Another technical solution of the present invention is: an antistatic plastic, which is made of the following raw materials according to the ratio of parts by mass: 110-130 parts by mass of PVC, 30-35 parts by mass of PP, 30-40 parts by mass of ABS, 10 parts by mass -15 parts by mass of aliphatic sulfonate, 5-8 parts by mass of tribasic lead sulfate, 4-8 parts by mass of catalyst, 5-10 parts by mass of antistatic agent, 10-20 parts by mass of carbon black, 6-10 parts by mass of Hydroxymethyl aliphatic amine, 10-20 parts by mass of impact modifier, 10-15 parts by mass of graphite, 3-6 parts by mass of cocatalyst, 5-10 parts by mass of dibasic lead phosphite, 1-5 parts by mass of white oil and 5-10 parts by mass of dibutyl phthalate.

Above-mentioned catalyst is sodium hydroxide.

The above-mentioned antistatic agent is one or both of antistatic agents S-15, SN, HZ-1 and HZ-14.

The particle size of the above-mentioned carbon black is 80-120 mesh.

The impact modifier mentioned above is an impact modifier CPE.

The above-mentioned graphite has a particle size of 300-310 μm.

The above cocatalyst is acetyl caprolactam.

The preparation method of the above-mentioned antistatic plastic, the preparation steps of the method are as follows: firstly mix each component fully and evenly, and then add it into a twin-screw extruder at a temperature of 170-200°C and a screw speed of 80-90r/min. Melting and plasticizing granulation; the pellets are injection molded under the conditions of barrel temperature 165-195°C, mold temperature 120-125°C, and injection pressure 92-97MPa.

Compared with the prior art, the antistatic plastic of the present invention has the following remarkable effects: the volume resistivity reaches 6.01E10-7.08E10 ohm cm, and the surface resistivity reaches 8.36E12-9.57E12 ohm cm, indicating that it is antistatic The properties are much higher than the performance parameters of similar plastics in the prior art; the plastics of the present invention have higher notched impact strength, bending strength and hardness, and have good antistatic properties, and can be applied to electronic isolation boards and semiconductor equipment casings etc., can effectively prevent static electricity accumulation, thereby avoiding damage to electronic components. Moreover, the preparation method provided by the invention has a simple process and is convenient for large-scale production.

Detailed ways

Example 1

An antistatic plastic, which is mainly made of the following raw materials according to the ratio of parts by mass: 110-130 parts by mass of PVC, 30-35 parts by mass of PP, 30-40 parts by mass of ABS, 10-15 parts by mass of aliphatic sulfonic acid Salt, 5-8 parts by mass of tribasic lead sulfate, 4-8 parts by mass of catalyst, 5-10 parts by mass of antistatic agent, 10-20 parts by mass of carbon black, 6-10 parts by mass of hydroxymethyl fatty amine, 10- 20 parts by mass of impact modifier, 10-15 parts by mass of graphite, 3-6 parts by mass of cocatalyst, 5-10 parts by mass of dibasic lead phosphite and 1-5 parts by mass of white oil.

Another preferred solution of the present invention: an antistatic plastic, which is mainly made of the following raw materials according to the ratio of parts by mass: 110-130 parts by mass of PVC, 30-35 parts by mass of PP, 30-40 parts by mass of ABS, 10 parts by mass -15 parts by mass of aliphatic sulfonate, 5-8 parts by mass of tribasic lead sulfate, 4-8 parts by mass of catalyst, 5-10 parts by mass of antistatic agent, 10-20 parts by mass of carbon black, 6-10 parts by mass of Hydroxymethyl aliphatic amine, 10-20 parts by mass of impact modifier, 10-15 parts by mass of graphite, 3-6 parts by mass of cocatalyst, 5-10 parts by mass of dibasic lead phosphite, 1-5 parts by mass of white oil and 5-10 parts by mass of dibutyl phthalate.

Above-mentioned catalyst is sodium hydroxide.

The above-mentioned antistatic agent is one or both of antistatic agents S-15, SN, HZ-1 and HZ-14.

The particle size of the above-mentioned carbon black is 80-120 mesh.

The impact modifier mentioned above is an impact modifier CPE.

The above-mentioned graphite has a particle size of 300-310 μm.

The above cocatalyst is acetyl caprolactam.

The preparation method of the above-mentioned antistatic plastic, the preparation steps of the method are as follows: firstly mix each component fully and evenly, and then add it into a twin-screw extruder at a temperature of 170-200°C and a screw speed of 80-90r/min. Melting and plasticizing granulation; the pellets are injection molded under the conditions of barrel temperature 165-195°C, mold temperature 120-125°C, and injection pressure 92-97MPa.

Example 2

An antistatic plastic, which is mainly made of the following raw materials according to the ratio of parts by mass: 110 parts by mass of PVC, 30 parts by mass of PP, 30 parts by mass of ABS, 10 parts by mass of aliphatic sulfonate, 5 parts by mass of tribasic Lead sulfate, 4 parts by mass of sodium hydroxide, 5 parts by mass of antistatic agent S-15, 10 parts by mass of carbon black with a particle size of 80-120 mesh, 16 parts by mass of hydroxymethyl aliphatic amine, 10 parts by mass of impact modifier CPE , 10 parts by mass of graphite with a particle size of 300-310 μm, 3 parts by mass of acetyl caprolactam, 5 parts by mass of dibasic lead phosphite and 1 part by mass of white oil.

The method for preparing the above-mentioned antistatic plastics comprises the following steps: firstly mix each component fully and evenly, then add them into a twin-screw extruder to melt, plasticize and granulate them at a temperature of 170°C and a screw speed of 80r/min; Injection molding under the conditions of barrel temperature 165°C, mold temperature 120°C, and injection pressure 92MPa.

Example 3

An antistatic plastic, which is mainly made of the following raw materials according to the ratio of parts by mass: 120 parts by mass of PVC, 32 parts by mass of PP, 34 parts by mass of ABS, 13 parts by mass of aliphatic sulfonate, 6 parts by mass of tribasic Lead sulfate, 5 parts by mass of sodium hydroxide, 7 parts by mass of antistatic agent SN, 14 parts by mass of carbon black with a particle size of 80-120, 6 parts by mass of hydroxymethyl fatty amine, 10 parts by mass of impact modifier CPE, 10 parts by mass of Parts by mass of graphite with a particle size of 300-310 μm, 3 parts by mass of acetyl caprolactam, 5 parts by mass of dibasic lead phosphite and 1 part by mass of white oil.

The method for preparing the above-mentioned antistatic plastics comprises the following steps: firstly mix each component fully and evenly, then add them into a twin-screw extruder to melt, plasticize and granulate them at a temperature of 180°C and a screw speed of 85r/min; Injection molding under the conditions of barrel temperature 175°C, mold temperature 125°C, and injection pressure 97MPa.

Example 4

An antistatic plastic, which is mainly made of the following raw materials in proportion by mass: 130 parts by mass of PVC, 35 parts by mass of PP, 30 parts by mass of ABS, 10 parts by mass of aliphatic sulfonate, 5 parts by mass of tribasic Lead sulfate, 4 parts by mass of sodium hydroxide, 5 parts by mass of antistatic agent HZ-1, 10 parts by mass of carbon black with a particle size of 80-120 mesh, 6 parts by mass of hydroxymethyl fatty amine, 10 parts by mass of impact modifier CPE , 10 parts by mass of graphite with a particle size of 300-310 μm, 6 parts by mass of acetyl caprolactam, 5 parts by mass of dibasic lead phosphite and 1 part by mass of white oil.

The method for preparing the above-mentioned antistatic plastics comprises the following steps: firstly mix each component fully and evenly, and then add them into a twin-screw extruder to melt, plasticize and granulate them at a temperature of 200°C and a screw speed of 90r/min; Injection molding under the conditions of barrel temperature 195°C, mold temperature 120°C, and injection pressure 92MPa.

Example 5

An antistatic plastic, which is mainly made of the following raw materials according to the ratio of parts by mass: 130 parts by mass of PVC, 32 parts by mass of PP, 34 parts by mass of ABS, 13 parts by mass of aliphatic sulfonate, 7 parts by mass of tribasic Lead sulfate, 4 parts by mass of sodium hydroxide, 8 parts by mass of antistatic agent HZ-14, 13 parts by mass of carbon black with a particle size of 80-120 mesh, 7 parts by mass of hydroxymethyl aliphatic amine, 17 parts by mass of impact modifier CPE , 11 parts by mass of graphite with a particle size of 300-310 μm, 3 parts by mass of acetyl caprolactam, 6 parts by mass of dibasic lead phosphite, 3 parts by mass of white oil and 7 parts by mass of dibutyl phthalate.

The method for preparing the above-mentioned antistatic plastics comprises the following steps: firstly mix each component fully and evenly, and then put them into a twin-screw extruder to melt, plasticize and granulate them at a temperature of 190°C and a screw speed of 80r/min; Injection molding under the conditions of barrel temperature 185°C, mold temperature 123°C, and injection pressure 94MPa.

Example 6

An antistatic plastic, which is mainly made of the following raw materials according to the ratio of parts by mass: 126 parts by mass of PVC, 33 parts by mass of PP, 36 parts by mass of ABS, 12 parts by mass of aliphatic sulfonate, 6 parts by mass of tribasic Lead sulfate, 7 parts by mass of sodium hydroxide, 3 parts by mass of antistatic agent S-15, 3 parts by mass of antistatic agent SN, 15 parts by mass of particle size are 80-120 mesh carbon black, 7 parts by mass of hydroxymethyl fatty amine, 12 Parts by mass of impact modifier CPE, 10-15 parts by mass of graphite with a particle size of 300-310 μm, 4 parts by mass of acetyl caprolactam, 8 parts by mass of dibasic lead phosphite, 3 parts by mass of white oil and 9 parts by mass of ortho Dibutyl phthalate.

The method for preparing the above-mentioned antistatic plastics comprises the following steps: firstly mix each component fully and evenly, and then add them into a twin-screw extruder to melt, plasticize and granulate them at a temperature of 200°C and a screw speed of 90r/min; Injection molding under conditions of barrel temperature 195°C, mold temperature 125°C, injection pressure 97MPa.

Example 7

An antistatic plastic, which is mainly made of the following raw materials according to the ratio of parts by mass: 110 parts by mass of PVC, 30 parts by mass of PP, 40 parts by mass of ABS, 15 parts by mass of aliphatic sulfonate, 8 parts by mass of tribasic Lead sulfate, 4-8 parts by mass of sodium hydroxide, 5 parts by mass of antistatic agent HZ-1, 1 part by mass of antistatic agent HZ-14, 10 parts by mass of carbon black with a particle size of 80-120 mesh, 8 parts by mass of hydroxymethyl Aliphatic amine, 17 parts by mass of impact modifier CPE, 15 parts by mass of graphite with a particle size of 300-310 μm, 4 parts by mass of acetyl caprolactam, 8 parts by mass of dibasic lead phosphite, 4 parts by mass of white oil and 7 parts by mass parts dibutyl phthalate.

The method for preparing the above-mentioned antistatic plastics comprises the following steps: firstly mix each component fully and evenly, and then add them into a twin-screw extruder to melt, plasticize and granulate them at a temperature of 175°C and a screw speed of 90r/min; Injection molding under the conditions of barrel temperature 170°C, mold temperature 125°C, and injection pressure 93MPa.

Example 8

An antistatic plastic, which is mainly made of the following raw materials according to the ratio of parts by mass: 118 parts by mass of PVC, 32 parts by mass of PP, 40 parts by mass of ABS, 10 parts by mass of aliphatic sulfonate, 5 parts by mass of tribasic Lead sulfate, 8 parts by mass of sodium hydroxide, 8 parts by mass of antistatic agent SN, 2 parts by mass of antistatic agent HZ-14, 10 parts by mass of particle size are carbon black of 80-120 purpose, 10 parts by mass of hydroxymethyl fatty amine, 10 parts by mass of Parts by mass of impact modifier CPE, 10 parts by mass of graphite with a particle size of 300-310 μm, 3 parts by mass of acetyl caprolactam, 10 parts by mass of dibasic lead phosphite, 5 parts by mass of white oil and 5 parts by mass of phthalate Dibutyl formate.

The method for preparing the above-mentioned antistatic plastics comprises the following steps: firstly mix each component fully and evenly, and then add them into a twin-screw extruder to melt, plasticize and granulate them at a temperature of 200°C and a screw speed of 90r/min; Injection molding under the conditions of barrel temperature 195°C, mold temperature 120°C, and injection pressure 97MPa.

Example 9

An antistatic plastic, which is mainly made of the following raw materials according to the ratio of parts by mass: 130 parts by mass of PVC, 31 parts by mass of PP, 32 parts by mass of ABS, 10 parts by mass of aliphatic sulfonate, 8 parts by mass of tribasic Lead sulfate, 4 parts by mass of sodium hydroxide, 1 part by mass of antistatic agent HZ-11, 4 parts by mass of antistatic agent S-15, 10 parts by mass of carbon black with a particle size of 80-120 mesh, 8 parts by mass of hydroxymethyl fatty amine , 18 parts by mass of impact modifier CPE, 14 parts by mass of graphite with a particle size of 300-310 μm, 3 parts by mass of acetyl caprolactam, 7 parts by mass of dibasic lead phosphite, 3 parts by mass of white oil and 8 parts by mass of ortho Dibutyl phthalate.

The method for preparing the above-mentioned antistatic plastics comprises the following steps: firstly mix each component fully and evenly, then add them into a twin-screw extruder to melt, plasticize and granulate them at a temperature of 185°C and a screw speed of 85r/min; Injection molding under the conditions of barrel temperature 180°C, mold temperature 125°C, and injection pressure 94MPa.

Example 10

Performance test: The plastics in the above-mentioned 2-9 examples were made into standard splines to carry out performance tests according to the national standards for similar plastics. The comparative example 1 selected PC antistatic material purchased from Dongguan Shangyuan Conductive Plastic Co., Ltd. (extruded level), the performance is shown in Table 1:

Claims (9)

1. an anti-static plastic, it is characterized in that it is made up according to mass fraction proportioning of following raw materials according: 110-130 mass parts PVC, 30-35 mass parts PP, 30-40 mass parts ABS, 10-15 mass parts fatty group sulfonate, 5-8 mass parts tribasic lead sulfate, 4-8 mass parts of catalyst, 5-10 mass parts static inhibitor, 10-20 mass parts of carbon black, 6-10 mass parts methylol aliphatic amide, 10-20 mass parts anti-impact modifier, 10-15 mass parts graphite, 3-6 mass parts promotor, 5-10 mass parts dibasic lead phosphite and 1-5 mass parts white oil.

2. an anti-static plastic, it is characterized in that it is made up according to mass fraction proportioning of following raw materials according: 110-130 mass parts PVC, 30-35 mass parts PP, 30-40 mass parts ABS, 10-15 mass parts fatty group sulfonate, 5-8 mass parts tribasic lead sulfate, 4-8 mass parts of catalyst, 5-10 mass parts static inhibitor, 10-20 mass parts of carbon black, 6-10 mass parts methylol aliphatic amide, 10-20 mass parts anti-impact modifier, 10-15 mass parts graphite, 3-6 mass parts promotor, 5-10 mass parts dibasic lead phosphite, 1-5 mass parts white oil and 5-10 mass parts dibutyl phthalate.

3. a kind of anti-static plastic according to claim 1, is characterized in that described catalyzer is sodium hydroxide.

4. a kind of anti-static plastic according to claim 1, is characterized in that described static inhibitor is one or both in static inhibitor S-15, SN, HZ-1 and HZ-14.

5. a kind of anti-static plastic according to claim 1, is characterized in that the granularity of described carbon black is 80-120 order.

6. a kind of anti-static plastic according to claim 1, is characterized in that described anti-impact modifier is anti-impact modifier CPE.

7. a kind of anti-static plastic according to claim 1, is characterized in that the particle diameter of described graphite is 300-310 μm.

8. a kind of anti-static plastic according to claim 1, is characterized in that described promotor is vinylcaprolactam.

9. the preparation method of a kind of anti-static plastic according to any one of claim 1-8, it is characterized in that the preparation process of the method is as follows: after first each component fully being mixed, to add in twin screw extruder at 170-200 DEG C of temperature and fusion plastification granulation under screw speed 80-90r/min condition; By pellet in barrel temperature 165-195 DEG C temperature, injection moulding under the condition of die temperature 120-125 DEG C, injection pressure 92-97MPa.