阅读说明：本技术 一种用于发泡聚苯乙烯的增强母粒及其制备方法 (Reinforced master batch for foamed polystyrene and preparation method thereof ) 是由 何海峰 王倩 于 2021-06-01 设计创作，主要内容包括：本发明提供了一种用于发泡聚苯乙烯的增强母粒,包括如下重量占比的原料：聚合物树脂20-89％,黑色滑石粉10-79％,其他原料1-20％,所述黑色滑石粉和聚合物树脂的总占比不超过99％。该母粒原料中加入了黑色滑石粉,可增加聚苯乙烯板的强度和韧性；使用炭黑原料可以提高聚苯乙烯板的抗静电性,同时也能提供一定黑度。(The invention provides a reinforced master batch for expanded polystyrene, which comprises the following raw materials in parts by weight: 20-89% of polymer resin, 10-79% of black talcum powder and 1-20% of other raw materials, wherein the total proportion of the black talcum powder and the polymer resin is not more than 99%. The black talcum powder is added into the master batch raw material, so that the strength and toughness of the polystyrene board can be improved; the antistatic property of the polystyrene board can be improved by using the carbon black raw material, and a certain blackness can be provided at the same time.)

1. A reinforcing master batch for expanded polystyrene is characterized in that: comprises the following raw materials in percentage by weight: 20-89% of polymer resin, 10-79% of black talcum powder and 1-20% of other raw materials, wherein the total proportion of the black talcum powder and the polymer resin is not more than 99%.

2. The reinforcing masterbatch for expanded polystyrene of claim 1, wherein: the other raw materials comprise an antioxidant, a lubricant, a dispersant, a pigment and carbon black, and the weight ratio of the antioxidant to the dispersant to the pigment to the carbon black is 1-2: 1-2: 2-4: 2-3: 0.5 to 0.8.

3. The reinforcing masterbatch for expanded polystyrene of claim 1, wherein: the polymer resin is one of polystyrene and derivatives thereof such as HDPE, LDPE, LLDPE, POE and EPDM.

4. The reinforcing masterbatch for expanded polystyrene of claim 1, wherein: the black talcum powder is derived from a natural magnesium silicate mineral and contains 0.1 to 10 weight percent of carbon organic matters.

5. The reinforcing masterbatch for expanded polystyrene as claimed in claim 2, wherein: the antioxidant is one of 1076 type antioxidant, 1010 type antioxidant, 168 type antioxidant and 324 type antioxidant, the lubricant is calcium stearate or zinc stearate, and the dispersant is PE wax or EVA wax.

6. A preparation method of reinforced master batch for expanded polystyrene is characterized by comprising the following steps: the method specifically comprises the following steps of,

step 1, weighing black talcum powder, carbon black and a dispersing agent according to the proportion of a formula, adding the black talcum powder, the carbon black and the dispersing agent into a grinding machine, grinding for 10-20 minutes at a rotating speed of 2000 revolutions per minute, and controlling the particle size of ground particles to be 400-500 nanometers;

step 2, crushing the weighed polymer resin, adding the crushed polymer resin and the ground substance in the step 1 into a stirrer, and stirring for 6-8 minutes at the rotating speed of 200 revolutions per minute to obtain a mixture; then adding the mixture and the weighed antioxidant, lubricant, dispersant and pigment into a high-speed mixing roll to mix for 8-12 minutes to obtain a mixed material;

step 3, putting the mixed material in the step 2 into a feeder, then injecting the material into a double-screw extruder through the feeder, extruding the material at the temperature of 170 ℃ and 180 ℃ at the screw rotating speed of 60-65rpm, extruding the material into strips by using the double-screw extruder, and cooling the strips by air;

and 4, crushing the cooled strip-shaped objects into particles by a granulator, sieving the crushed particles, and reserving the particles meeting the specification to obtain the reinforced master batch.

Technical Field

The invention belongs to the field of color master batches, and particularly relates to a reinforced master batch for foamed polystyrene and a preparation method thereof.

Background

The expandable polystyrene board has the advantages of light weight, low price, low heat conductivity, small water absorption, good electrical insulation performance, sound insulation, shock resistance, moisture resistance, simple forming process and the like, so the expandable polystyrene board is widely used as heat insulation, sound insulation and earthquake-proof materials for buildings, ships, automobiles, trains, refrigeration, freezing and the like. The expandable polystyrene board is a polystyrene foam plastic board with a closed cell structure, which is prepared by heating and pre-expanding expandable polystyrene beads and then heating and molding in a mold. When polystyrene beads are heated to foam, the reinforced master batches are needed to be used for reinforcing the strength of the polystyrene board and providing certain blackness, but the existing reinforced master batches are poor in dispersibility and poor in strength increasing effect.

Disclosure of Invention

The invention aims to provide a reinforced master batch for expanded polystyrene and a preparation method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the reinforced master batch for the expanded polystyrene comprises the following raw materials in percentage by weight: 20-89% of polymer resin, 10-79% of black talcum powder and 1-20% of other raw materials, wherein the total proportion of the black talcum powder and the polymer resin is not more than 99%.

Preferably, the other raw materials comprise an antioxidant, a lubricant, a dispersant, a pigment and carbon black, and the weight ratio of the antioxidant to the lubricant to the pigment to the carbon black is 1-2: 1-2: 2-4: 2-3: 0.5 to 0.8.

Preferably, the polymer resin is one of polystyrene and derivatives thereof, such as HDPE, LDPE, LLDPE, POE and EPDM.

Preferably, the black talc is derived from a natural magnesium silicate mineral containing 0.1 to 10 wt% of a carbon-based organic substance.

Preferably, the antioxidant is one of 1076 type antioxidant, 1010 type antioxidant, 168 type antioxidant and 324 type antioxidant, the lubricant is calcium stearate or zinc stearate, and the dispersant is PE wax or EVA wax.

A preparation method of a reinforced master batch for foaming polystyrene specifically comprises the following steps:

step 1, weighing black talcum powder, carbon black and a dispersing agent according to the proportion of a formula, adding the black talcum powder, the carbon black and the dispersing agent into a grinding machine, grinding for 10-20 minutes at a rotating speed of 2000 revolutions per minute, and controlling the particle size of ground particles to be 400-500 nanometers;

step 2, crushing the weighed polymer resin, adding the crushed polymer resin and the ground substance in the step 1 into a stirrer, and stirring for 6-8 minutes at the rotating speed of 200 revolutions per minute to obtain a mixture; then adding the mixture and the weighed antioxidant, lubricant, dispersant and pigment into a high-speed mixing roll to mix for 8-12 minutes to obtain a mixed material;

step 3, putting the mixed material in the step 2 into a feeder, then injecting the material into a double-screw extruder through the feeder, extruding the material at the temperature of 170 ℃ and 180 ℃ at the screw rotating speed of 60-65rpm, extruding the material into strips by using the double-screw extruder, and cooling the strips by air;

and 4, crushing the cooled strip-shaped objects into particles by a granulator, sieving the crushed particles, and reserving the particles meeting the specification to obtain the reinforced master batch.

The invention has the technical effects and advantages that: the black talcum powder is added into the master batch raw material, so that the strength and toughness of the polystyrene board can be improved; the antistatic property of the polystyrene board can be improved by using the carbon black raw material, and a certain blackness can be provided at the same time.

Detailed Description

Example 1

The reinforced master batch for the expanded polystyrene comprises the following raw materials in percentage by weight: 20% of HDPE, 79% of black talcum powder and 1% of other raw materials.

Preferably, the other raw materials comprise an antioxidant, a lubricant, a dispersant, a pigment and carbon black in a weight ratio of 1: 1: 2: 2: 0.5.

preferably, the black talc is derived from a natural magnesium silicate mineral containing 0.1 to 10 wt% of a carbon-based organic substance.

Preferably, the antioxidant is one of 1076 type antioxidant, 1010 type antioxidant, 168 type antioxidant and 324 type antioxidant, the lubricant is calcium stearate or zinc stearate, and the dispersant is PE wax or EVA wax.

A preparation method of a reinforced master batch for foaming polystyrene specifically comprises the following steps:

step 1, weighing black talcum powder, carbon black and a dispersing agent according to the proportion of a formula, adding the black talcum powder, the carbon black and the dispersing agent into a grinding machine, grinding for 10-20 minutes at a rotating speed of 2000 revolutions per minute, and controlling the particle size of ground particles to be 400-500 nanometers;

step 2, crushing the weighed HDPE, adding the crushed HDPE and the ground material in the step 1 into a stirrer, and stirring for 6-8 minutes at the rotating speed of 200 revolutions per minute to obtain a mixture; then adding the mixture and the weighed antioxidant, lubricant, dispersant and pigment into a high-speed mixing roll to mix for 8-12 minutes to obtain a mixed material;

step 3, putting the mixed material in the step 2 into a feeder, then injecting the material into a double-screw extruder through the feeder, extruding the material at the temperature of 170 ℃ and 180 ℃ at the screw rotating speed of 60-65rpm, extruding the material into strips by using the double-screw extruder, and cooling the strips by air;

and 4, crushing the cooled strip-shaped objects into particles by a granulator, sieving the crushed particles, and reserving the particles meeting the specification to obtain the reinforced master batch.

Example 2

The reinforced master batch for the expanded polystyrene comprises the following raw materials in percentage by weight: 89% of LDPE, 10% of black talcum powder and 1% of other raw materials.

Preferably, the other raw materials comprise an antioxidant, a lubricant, a dispersant, a pigment and carbon black, and the weight ratio of the antioxidant to the lubricant to the pigment is 2: 2: 4: 3: 0.8.

preferably, the black talc is derived from a natural magnesium silicate mineral containing 0.1 to 10 wt% of a carbon-based organic substance.

Preferably, the antioxidant is one of 1076 type antioxidant, 1010 type antioxidant, 168 type antioxidant and 324 type antioxidant, the lubricant is calcium stearate or zinc stearate, and the dispersant is PE wax or EVA wax.

A preparation method of a reinforced master batch for foaming polystyrene specifically comprises the following steps:

step 1, weighing black talcum powder, carbon black and a dispersing agent according to the proportion of a formula, adding the black talcum powder, the carbon black and the dispersing agent into a grinding machine, grinding for 10-20 minutes at a rotating speed of 2000 revolutions per minute, and controlling the particle size of ground particles to be 400-500 nanometers;

step 2, crushing the weighed LDPE, adding the crushed LDPE and the ground material in the step 1 into a stirrer, and stirring for 6-8 minutes at the rotating speed of 200 revolutions per minute to obtain a mixture; then adding the mixture and the weighed antioxidant, lubricant, dispersant and pigment into a high-speed mixing roll to mix for 8-12 minutes to obtain a mixed material;

step 3, putting the mixed material in the step 2 into a feeder, then injecting the material into a double-screw extruder through the feeder, extruding the material at the temperature of 170 ℃ and 180 ℃ at the screw rotating speed of 60-65rpm, extruding the material into strips by using the double-screw extruder, and cooling the strips by air;

and 4, crushing the cooled strip-shaped objects into particles by a granulator, sieving the crushed particles, and reserving the particles meeting the specification to obtain the reinforced master batch.

Example 3

The reinforced master batch for the expanded polystyrene comprises the following raw materials in percentage by weight: 50% of LLDPE, 35% of black talcum powder and 15% of other raw materials.

Preferably, the other raw materials comprise an antioxidant, a lubricant, a dispersant, a pigment and carbon black, and the weight ratio of the antioxidant to the lubricant to the pigment is 1.5: 1.5: 2.8: 2.5: 0.6.

preferably, the black talc is derived from a natural magnesium silicate mineral containing 0.1 to 10 wt% of a carbon-based organic substance.

Preferably, the antioxidant is one of 1076 type antioxidant, 1010 type antioxidant, 168 type antioxidant and 324 type antioxidant, the lubricant is calcium stearate or zinc stearate, and the dispersant is PE wax or EVA wax.

A preparation method of a reinforced master batch for foaming polystyrene specifically comprises the following steps:

step 1, weighing black talcum powder, carbon black and a dispersing agent according to the proportion of a formula, adding the black talcum powder, the carbon black and the dispersing agent into a grinding machine, grinding for 10-20 minutes at a rotating speed of 2000 revolutions per minute, and controlling the particle size of ground particles to be 400-500 nanometers;

step 2, crushing the weighed LLDPE, adding the crushed LLDPE and the ground substance in the step 1 into a stirrer, and stirring for 6-8 minutes at the rotating speed of 200 revolutions per minute to obtain a mixture; then adding the mixture and the weighed antioxidant, lubricant, dispersant and pigment into a high-speed mixing roll to mix for 8-12 minutes to obtain a mixed material;

step 3, putting the mixed material in the step 2 into a feeder, then injecting the material into a double-screw extruder through the feeder, extruding the material at the temperature of 170 ℃ and 180 ℃ at the screw rotating speed of 60-65rpm, extruding the material into strips by using the double-screw extruder, and cooling the strips by air;

and 4, crushing the cooled strip-shaped objects into particles by a granulator, sieving the crushed particles, and reserving the particles meeting the specification to obtain the reinforced master batch.

Example 4

The reinforced master batch for the expanded polystyrene comprises the following raw materials in percentage by weight: 65% of EPDM, 25% of black talcum powder and 10% of other raw materials, wherein the total proportion of the black talcum powder and the polymer resin is not more than 99%.

Preferably, the other raw materials comprise an antioxidant, a lubricant, a dispersant, a pigment and carbon black, and the weight ratio of the antioxidant to the lubricant to the pigment is 1.4: 1.3: 2-4: 3: 0.8.

preferably, the black talc is derived from a natural magnesium silicate mineral containing 0.1 to 10 wt% of a carbon-based organic substance.

Preferably, the antioxidant is one of 1076 type antioxidant, 1010 type antioxidant, 168 type antioxidant and 324 type antioxidant, the lubricant is calcium stearate or zinc stearate, and the dispersant is PE wax or EVA wax.

A preparation method of a reinforced master batch for foaming polystyrene specifically comprises the following steps:

step 1, weighing black talcum powder, carbon black and a dispersing agent according to the proportion of a formula, adding the black talcum powder, the carbon black and the dispersing agent into a grinding machine, grinding for 10-20 minutes at a rotating speed of 2000 revolutions per minute, and controlling the particle size of ground particles to be 400-500 nanometers;

step 2, crushing the weighed EPDM, adding the crushed EPDM and the ground material in the step 1 into a stirrer, and stirring for 6-8 minutes at the rotating speed of 200 revolutions per minute to obtain a mixture; then adding the mixture and the weighed antioxidant, lubricant, dispersant and pigment into a high-speed mixing roll to mix for 8-12 minutes to obtain a mixed material;

step 3, putting the mixed material in the step 2 into a feeder, then injecting the material into a double-screw extruder through the feeder, extruding the material at the temperature of 170 ℃ and 180 ℃ at the screw rotating speed of 60-65rpm, extruding the material into strips by using the double-screw extruder, and cooling the strips by air;

and 4, crushing the cooled strip-shaped objects into particles by a granulator, sieving the crushed particles, and reserving the particles meeting the specification to obtain the reinforced master batch.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.