阅读说明：本技术 一种石墨烯改性pc/abs合金材料及其制备方法 (Modified PC/ABS alloy material of a kind of graphene and preparation method thereof ) 是由 张宁 于 2018-05-21 设计创作，主要内容包括：本发明公开了一种石墨烯改性PC/ABS合金材料及其制备方法,所述合金材料由如下按质量份数组成：PC/ABS合金100份、石墨烯1-20份、马来酸酐接枝MBS弹性体1-10份,ACR加工助剂1-5份,纳米对苯二甲酸钙晶须1-10份。该方法制备的PC/ABS合金材料导热系数高过3W/m·k,表面电阻低于107Ω,拉伸强度高于65MPa,冲击强度高于100KJ/m<Sup>2</Sup>,能够满足导热、抗静电、高性能领域的使用要求。(The invention discloses modified PC/ABS alloy materials of a kind of graphene and preparation method thereof, the alloy material by mass fraction by being formed as follows: 100 parts of PC/ABS alloy, 1-20 parts of graphene, maleic anhydride are grafted 1-10 parts of MBS elastomer, 1-5 parts of ACR processing aid, 1-10 parts of nanometer terephthalic acid (TPA) calcium pyroborate.The PC/ABS alloy material thermal coefficient of this method preparation exceeds 3W/mk, and sheet resistance is lower than 107 Ω, and tensile strength is higher than 65MPa, and impact strength is higher than 100KJ/m 2 , can satisfy the requirement in thermally conductive, antistatic high-performance field.)

1. modified PC/ABS alloy material of a kind of graphene and preparation method thereof, it is characterised in that: the alloy material is by as follows Form by mass fraction: 100 parts of PC/ABS alloy, 1-20 parts of graphene, maleic anhydride are grafted 1-10 parts of MBS elastomer, ACR 1-5 parts of processing aid, 1-10 parts of nanometer terephthalic acid (TPA) calcium pyroborate.

2. PC/ABS alloy material according to claim 1, it is characterised in that: component mass ratio PC:ABS=1:1.

3. graphene according to claim 1, it is characterised in that: thickness is less than 6.7nm, 1-20 layers of carbon atom composition.

4. maleic anhydride is grafted MBS elastomer according to claim 1, it is characterised in that: calcium maleate grafting rate is greater than 1%.

5. ACR processing aid according to claim 1, it is characterised in that: methyl methacrylate content 20-40%.

6. nanometer terephthalic acid (TPA) calcium pyroborate according to claim 1, it is characterised in that: average grain diameter is less than 50nm, major diameter Than being greater than 20.

7. a kind of modified PC/ABS alloy preparation method of graphene, it is characterised in that: press mass fraction precise material；By object Material is grafted MBS elastomer, ACR processing aid, nanometer terephthalic acid (TPA) calcium pyroborate, graphite according to PC/ABS alloy, maleic anhydride Alkene sequentially adds high-speed mixer mixing 10-30min；Material after mixing is placed in squeeze out in double screw extruder and is made Grain, temperature are 220-250 DEG C.

Technical field

The present invention relates to technical field of polymer materials, more particularly to a kind of modified PC/ABS alloy material of graphene and Preparation method.

Background technique

PC/ABS alloy is mixed by polycarbonate (PC) and acrylonitrile/butadiene/styrene copolymer (ABS) acrylonitrile Made of thermoplasticity it is a kind of have excellent performance, widely used engineering plastics, be mainly used in the industries such as electrical appliances, building materials. The PC/ABS alloy of poly- carbonic acid vinegar (PC) and preparation can integrate the excellent performance for having both both PC and ABS in performance, not only With the preferable heat resistance of PC resin, rigidity, dimensional stability and good stretching, impact property, also have ABS is excellent to add Work mobility and low-temperature impact resistance.But there is also obvious disadvantages for PC/ABS alloy: first, thermal coefficient is low, Wu Faman Its heating conduction can be improved in the demand of sufficient heat-conducting plastic, the filling of the Heat Conduction Materials such as metal oxide, metal nitride, graphite, But very high loading is needed, this not only increases material machine-shaping difficulty, while also resulting in mechanical property degradation； Second, poorly conductive, is easy to produce electrostatic, it is unable to satisfy the requirement of antistatic field；Third, tensile property and impact It can be unable to satisfy and require more harsh application field, comprehensive performance is up for further improving.

Graphene is the current optimal material of known thermal conductivity in the world, and thermal coefficient is up to 5300W/mk, and has Dimensional thinlayer structure is a kind of ideal conductive filler material.Since graphene sheet layer is easily sent out in polymer resin matrix It is raw to reunite, when content is lower, it is difficult to thermal conducting path is constructed, therefore in polymer resin matrix to reach certain thermal conductivity, it must High level filling must be carried out, cost increase is caused.

Terephthalic acid (TPA) calcium pyroborate is to pass through metathesis reaction system by raw materials such as terephthalic acid (TPA), sodium hydroxide, calcium chloride Standby novel nano whisker evenly dispersed in PC/ABS alloy can have the function of excellent activeness and quietness.Terephthalic acid (TPA) Calcium pyroborate draw ratio with higher, graphene are easy to form thermal conducting path in its surface aggregation, and under same amount, alloy is led Hot coefficient significantly improves.

Summary of the invention

In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of modified PC/ABS alloy material of graphene and Preparation method.The PC/ABS alloy material thermal coefficient of this method preparation exceeds 3W/mk, and sheet resistance is lower than 10⁷Ω is drawn Intensity is stretched higher than 65MPa, and impact strength is higher than 100KJ/m², can satisfy high thermal conductivity, antistatic, high-performance field use is wanted It asks.

The technical scheme adopted by the invention is that: modified PC/ABS alloy material of a kind of graphene and preparation method thereof, institute Alloy material is stated by forming as follows by mass fraction: 100 parts of PC/ABS alloy, 1-20 parts of graphene, maleic anhydride grafting MBS bullet 1-10 parts of body of property, 1-5 parts of ACR processing aid, 1-10 parts of nanometer terephthalic acid (TPA) calcium pyroborate.

Preferably, component mass ratio PC:ABS=1:1 in the PC/ABS alloy material.

Preferably, the graphene thickness is less than 6.7nm, 1-20 layers of carbon atom.

Preferably, calcium maleate grafting rate is greater than 1% in the maleic anhydride grafting MBS elastomer.

Preferably, methyl methacrylate content 20-40% in the ACR processing aid.

Preferably, the nanometer terephthalic acid (TPA) calcium pyroborate average grain diameter is less than 50nm, and draw ratio is greater than 20.

Modified PC/ABS alloy material of a kind of graphene and preparation method thereof includes the following steps:

(1) mass fraction precise material is pressed, 100 parts of PC/ABS alloy, 1-20 parts of graphene, maleic anhydride are grafted MBS bullet 1-10 parts of body of property, 1-5 parts of ACR processing aid, 1-10 parts of nanometer terephthalic acid (TPA) calcium pyroborate.

(2) material is grafted MBS elastomer, ACR processing aid, nanometer to benzene two according to PC/ABS alloy, maleic anhydride Formic acid calcium pyroborate, graphene sequentially add high-speed mixer mixing 10-30min.

(3) material after mixing is placed in extruding pelletization in double screw extruder, temperature is 220-250 DEG C.

Compared with prior art, the beneficial effects of the present invention are: a kind of modified PC/ABS alloy material of graphene and its system Preparation Method.The PC/ABS alloy material thermal coefficient of this method preparation exceeds 3W/mk, and sheet resistance is lower than 107 Ω, stretches strong Degree is higher than 65MPa, and impact strength is higher than 100KJ/m², can satisfy the requirement in thermally conductive, antistatic high-performance field.

Specific embodiment

To illustrate thought and purpose of the invention, below in conjunction with specific embodiment, the present invention is described further.

Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described, Described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work, belongs to the present invention The range of protection.

Example 1

100 parts of PC/ABS alloy, 10 parts of graphene, 1 part of MBS elastomer of maleic anhydride grafting, 1 part of ACR processing aid, nanometer 1 part of terephthalic acid (TPA) calcium pyroborate.Material is grafted MBS elastomer, ACR processing aid, nanometer according to PC/ABS alloy, maleic anhydride Terephthalic acid (TPA) calcium pyroborate, graphene sequentially add high-speed mixer mixing 10min.Material after mixing is placed in double spiral shells 220 DEG C of extruding pelletizations in bar screw machine obtain PC/ABS alloy material thermal coefficient 3W/mk, sheet resistance 6.7 × 10⁶Ω, Tensile strength 67MPa, impact strength 103KJ/m²。

Example 2

100 parts of PC/ABS alloy, 20 parts of graphene, maleic anhydride are grafted 10 parts of MBS elastomer, 1 part of ACR processing aid, receive 5 parts of calcium pyroborate of terephthalic acid (TPA) of rice.Material is grafted MBS elastomer according to PC/ABS alloy, maleic anhydride, ACR processing aid, receives Rice terephthalic acid (TPA) calcium pyroborate, graphene sequentially add high-speed mixer mixing 15min.Material after mixing is placed in double 230 DEG C of extruding pelletizations in screw spiral machine obtain PC/ABS alloy material thermal coefficient 5W/mk, sheet resistance 2.1 × 10⁶ Ω, tensile strength 65MPa, impact strength 109KJ/m²。

Example 3

100 parts of PC/ABS alloy, 20 parts of graphene, 5 parts of MBS elastomer of maleic anhydride grafting, 5 parts of ACR processing aid, nanometer 10 parts of terephthalic acid (TPA) calcium pyroborate.Material is grafted MBS elastomer according to PC/ABS alloy, maleic anhydride, ACR processing aid, receives Rice terephthalic acid (TPA) calcium pyroborate, graphene sequentially add high-speed mixer mixing 20min.Material after mixing is placed in double 230 DEG C of extruding pelletizations in screw spiral machine obtain PC/ABS alloy material thermal coefficient 5W/mk, sheet resistance 1.7 × 10⁶ Ω, tensile strength 70MPa, impact strength 112KJ/m²。

Example 4

By mass fraction precise material, 100 parts of PC/ABS alloy, 20 parts of graphene, maleic anhydride are grafted MBS elastomer 10 parts, 5 parts of ACR processing aid, 10 parts of nanometer terephthalic acid (TPA) calcium pyroborate.Material is grafted according to PC/ABS alloy, maleic anhydride MBS elastomer, ACR processing aid, nanometer terephthalic acid (TPA) calcium pyroborate, graphene sequentially add high-speed mixer mixing 30min. Material after mixing is placed in 250 DEG C of extruding pelletizations in twin screw helical machine, obtains PC/ABS alloy material thermal coefficient 6W/mk, sheet resistance 2.6 × 10⁵Ω, tensile strength 78MPa, impact strength 119KJ/m²。