阅读说明：本技术 一种带有隔离结构的防静电阻燃pvc/abs复合材料及其制备方法 (Anti-static flame-retardant PVC/ABS (polyvinyl chloride/acrylonitrile butadiene styrene) composite material with isolation structure and preparation method thereof ) 是由 赵方伟 王纲 马洁 李响 任仰省 李乃朋 高虎 于 2019-12-06 设计创作，主要内容包括：一种带有隔离结构的防静电阻燃PVC/ABS复合材料及其制备方法,包括以下制备步骤：将PVC、CPE、抗氧剂、稳定剂、增塑剂在高速混合机中进行预混合。将混合机温度升到70-90℃,待温度稳定后加入润滑剂,继续升温至90-120℃,然后保温5-15min,将混合好的物料A移入冷料机,冷却至40℃以下。将ABS树脂与导电填料在转矩流变仪中密炼2-5min,加入预先混合完毕的物料A,继续密炼2-5min。将密炼完成的物料模压5—10min,即可成型。本发明利用ABS机械性能、加工等性能好,性价比极高,应用广泛等优点,通过控制熔融时间等工艺 制备一种具有隔离结构的PVC/ABS复合材料,解决ABS电导率低且不阻燃,造成使用体验、安全等方面的问题。(An antistatic flame-retardant PVC/ABS composite material with an isolation structure and a preparation method thereof comprise the following preparation steps: premixing PVC, CPE, an antioxidant, a stabilizer and a plasticizer in a high-speed mixer. And (3) raising the temperature of the mixer to 70-90 ℃, adding the lubricant after the temperature is stable, continuing to raise the temperature to 90-120 ℃, then preserving the heat for 5-15min, transferring the mixed material A into a material cooler, and cooling to below 40 ℃. And banburying the ABS resin and the conductive filler in a torque rheometer for 2-5min, adding the premixed material A, and continuing banburying for 2-5 min. And (3) molding the internally mixed material for 5-10 min to obtain the finished product. The PVC/ABS composite material with the isolation structure is prepared by utilizing the advantages of good mechanical properties, processing performance and the like, extremely high cost performance, wide application and the like of ABS through processes of controlling melting time and the like, and the problems of low conductivity, non-flame retardance, use experience, safety and the like of ABS are solved.)

1. The anti-static flame-retardant PVC/ABS composite material with the isolation structure and the preparation method thereof are characterized by comprising the following components in parts by mass:

polyvinyl chloride (PVC): 30 to 70;

ABS resin: 20 to 70;

chlorinated Polyethylene (CPE): 3 to 20;

conductive filler: 2 to 10;

antioxidant: 0.5 to 2;

a stabilizer: 2-4;

lubricant: 0.5 to 2;

plasticizer: 1 to 60;

processing aid: 2 to 10;

nano calcium carbonate: 0 to 30.

2. An antistatic flame-retardant PVC/ABS composite material with an isolation structure and a preparation method thereof are characterized by comprising the following preparation steps:

s1, premixing PVC, CPE, an antioxidant, a stabilizer and a plasticizer in a high-speed mixer, wherein the speed of the high-speed mixer is as follows: 1000-1600 r/min; premixing time: 5-30 min;

s2, raising the temperature of the mixer to 70-90 ℃, adding the lubricant after the temperature is stable, continuing to raise the temperature to 90-120 ℃, then preserving the heat for 5-15min, transferring the mixed material A into a material cooler, and cooling to below 40 ℃;

s3, banburying the ABS resin and the conductive filler in a torque rheometer for 2-5min, adding the premixed material A, and continuing banburying for 2-5min, wherein the banburying temperature is as follows: 150 ℃ to 220 ℃;

s4, molding the material subjected to the S3 banburying at the temperature of 150-180 ℃ and under the pressure of 5-20 MPa for 5-10 min, and then forming.

3. The PVC/ABS composite material with isolating structure and its preparing process according to claim 1, wherein the conductive filler is at least one selected from carbon black, graphene or carbon nanotube.

4. The antistatic flame-retardant PVC/ABS composite material with the isolation structure and the preparation method thereof as claimed in claim 1, wherein the antioxidant is at least one selected from antioxidant 1010, antioxidant 1067 or antioxidant 168.

5. The PVC/ABS composite material with isolation structure and its preparation method according to claim 1, wherein the stabilizer is at least one selected from metallic soap stabilizer, rare earth stabilizer, organic stabilizer or auxiliary stabilizer.

6. The PVC/ABS composite material with the isolation structure and the preparation method thereof according to claim 1, wherein the metal soap stabilizer comprises zinc stearate, calcium stearate, cadmium stearate, etc.; the rare earth stabilizer includes XT-1, XT-2, XT-3, etc.; the organic stabilizer comprises an organic tin heat stabilizer, an organic silicon heat stabilizer and the like; the auxiliary stabilizer comprises epoxidized soybean oil, dipentaerythritol, dibenzoylmethane and the like.

7. The PVC/ABS composite material with an isolation structure and the preparation method thereof according to claim 1, wherein the lubricant is at least one selected from stearic acid, oxidized polyethylene wax (OPE wax), paraffin wax or polyethylene wax (PE wax).

8. The antistatic flame retardant PVC/ABS composite material with insulation structure and the preparation method thereof according to claim 1, wherein the plasticizer is at least one selected from dioctyl phthalate (DOP), dioctyl terephthalate (DOTP), di (2-ethyl) hexyl phthalate (DEHP), or trioctyl trimellitate (TOTM).

9. The PVC/ABS composite material with isolating structure and its preparation method as claimed in claim 1, wherein the processing aid is at least one selected from Acrylate Copolymer (ACR) or MBS resin (MBS).

Technical Field

The invention relates to the technical field of preparation of composite materials with antistatic and flame-retardant effects, in particular to the technical field of preparation of a PVC/ABS composite material with an isolation structure and good antistatic and flame-retardant effects.

Background

At present, the traditional method for preparing the conductive flame-retardant material is to add the filler, but the random distribution and utilization rate of the conductive filler is low, the addition amount is high, the improvement of the conductive performance is not obvious, and the mechanical strength of the material can be damaged to a certain extent by excessive addition.

Besides the method of adding the filler, the method also comprises an emulsion blending method and a solution blending method, but although the emulsion blending method has strong controllability and designability and can achieve high conductivity, the industrial popularization technical requirement is high, the steps are complicated, the cost is high, an additional drying step is needed in the later period, only antistatic-level electricity prevention is required in the field of daily living products which do not require high conductivity, and the economic cost, the technical investment and the production efficiency of the emulsion blending method are not in direct proportion to the benefit. Although the solution blending method has good dispersion, the solvent dependence is high, the environmental damage is large, and the problem that the well-dispersed filler is agglomerated when the solvent is removed occurs.

Chinese patent CN103073833A discloses a method for preparing an ABS master batch, wherein PVC with a flame retardant polymer is added into ABS resin as a flame retardant, phosphate is added as a third component to improve the compatibility of an ABS/PVC blending system, and carbon black is added into the blending system as an antistatic agent. However, the distribution of carbon black in the filler is random and the filler efficiency is low.

Chinese patent CN104292699A discloses an antistatic flame-retardant composite material for coal mines and a preparation method thereof, but the preparation process is that temperature extrusion is set in a conical double-screw extruder in a segmented mode, the requirement on the preparation temperature condition is high, the energy consumption is large, and the cost is high. And the mechanical strength is reduced to a certain extent.

Chinese patent CN102477206B discloses a flame-retardant antistatic ABS/PVC alloy material and a preparation method thereof, but after a compatilizer, a flame retardant and an antistatic agent are added, the combustibility and the apparent resistance are not obviously improved.

Disclosure of Invention

The invention aims to solve the problems, and aims to solve the problems, the invention utilizes the advantages of good mechanical property, processing property and the like, extremely high cost performance, wide application and the like of the ABS, and the conductive filler is positioned between ABS/PVC interfaces by controlling processes such as melting time and the like to prepare the PVC/ABS composite material with an isolation structure, thereby solving the problems of low conductivity, non-flame retardance, use experience, safety and the like of the ABS.

The invention relates to an anti-static flame-retardant PVC/ABS composite material with an isolation structure and a preparation method thereof, wherein the anti-static flame-retardant PVC/ABS composite material comprises the following components in parts by mass:

polyvinyl chloride (PVC): 30 to 70;

ABS resin: 20 to 70;

chlorinated Polyethylene (CPE): 3 to 20;

conductive filler: 2 to 10;

antioxidant: 0.5 to 2;

a stabilizer: 2-4;

lubricant: 0.5 to 2;

plasticizer: 1 to 60;

processing aid: 2 to 10;

nano calcium carbonate: 0 to 30.

An antistatic flame-retardant PVC/ABS composite material with an isolation structure and a preparation method thereof comprise the following preparation steps:

s1, premixing PVC, CPE, an antioxidant, a stabilizer and a plasticizer in a high-speed mixer, wherein the speed of the high-speed mixer is as follows: 1000-1600 r/min; premixing time: 5-30 min;

s2, raising the temperature of the mixer to 70-90 ℃, adding the lubricant after the temperature is stable, continuing to raise the temperature to 90-120 ℃, then preserving the heat for 5-15min, transferring the mixed material A into a material cooler, and cooling to below 40 ℃;

s3, banburying the ABS resin and the conductive filler in a torque rheometer for 2-5min, adding the premixed material A, and continuing banburying for 2-5min, wherein the banburying temperature is as follows: 150 ℃ to 220 ℃;

s4, molding the material subjected to the S3 banburying at the temperature of 150-180 ℃ and under the pressure of 5-20 MPa for 5-10 min, and then forming.

Preferably, the conductive filler is selected from at least one of carbon black, graphene or carbon nanotubes.

Preferably, the antioxidant is at least one selected from the group consisting of antioxidant 1010, antioxidant 1067 and antioxidant 168.

Preferably, the stabilizer is at least one selected from the group consisting of a metal soap stabilizer, a rare earth stabilizer, an organic stabilizer and an auxiliary stabilizer.

Preferably, the metal soap stabilizer comprises zinc stearate, calcium stearate, cadmium stearate and the like; the rare earth stabilizer includes XT-1, XT-2, XT-3, etc.; the organic stabilizer comprises an organic tin heat stabilizer, an organic silicon heat stabilizer and the like; the auxiliary stabilizer comprises epoxidized soybean oil, dipentaerythritol, dibenzoylmethane and the like.

Preferably, the lubricant is selected from at least one of stearic acid, oxidized polyethylene wax (OPE wax), paraffin wax or polyethylene wax (PE wax).

Preferably, the plasticizer is selected from at least one of dioctyl phthalate (DOP), dioctyl terephthalate (DOTP), di (2-ethyl) hexyl phthalate (DEHP), or trioctyl trimellitate (TOTM).

Preferably, the processing aid is selected from at least one of Acrylate Copolymer (ACR) or MBS resin (MBS).

The antistatic flame-retardant PVC/ABS composite material prepared by the preparation method disclosed by the invention has the following characteristics:

1. compared with the traditional filling method, the method has the advantages of simple and efficient process, high conformity with the conventional ABS production line and process, capability of directly utilizing the original process of an enterprise for forming after banburying without adding an anti-flame retardant agent and an antistatic agent, no drying post-treatment steps such as solvent removal and the like, and no additional equipment. The economic performance and the comprehensive cost performance are high, and the conductivity of the material is improved to meet the market demand.

2. In order to obtain high conductivity, the conductive filler in the prior art has high addition amount, such as PVC hard material, and if the conductivity requirement is more than 5 times, 9 parts of carbon black is generally required to be added. But causes the mechanical property of the material to be reduced. The conductive filler has the same conductive requirement, the addition amount is as small as half, and the conductivity of the conductive filler is 2 to 3 orders of magnitude higher than that of a control group under the same formula. The conductivity is improved efficiently and simply. Because the viscosity of the polymer is different, the conductive filler can spontaneously migrate to the direction of polyvinyl chloride (PVC) from the ABS resin under the thermodynamic driving force, and finally a layer of isolation structure is formed between the ABS/PVC interfaces, and the isolation structure is completely composed of the conductive filler, so that the conductive ABS/PVC composite material has continuous and good conductivity, has better charge dredging capability, prevents charge aggregation, and has an antistatic effect.

3. The mechanical strength and the conductivity are greatly improved, and the appearance and the brightness of the product are also improved. The ABS resin improves the toughness and surface brightness of polyvinyl chloride (PVC), the polyvinyl chloride (PVC) also improves the flame retardant property of the ABS, and the Chlorinated Polyethylene (CPE) improves the compatibility of a blending system, so that the whole composite system is more stable.

Detailed Description

The present invention will be further described with reference to specific embodiments. It should be noted that the limitations made in the following embodiments do not affect the technical content disclosed by the present invention, do not limit the technical scope of the present invention,