阅读说明：本技术 一种免喷涂abs材料及其制备方法 (Spraying-free ABS material and preparation method thereof ) 是由 陈扬友 朱文博 郑子华 梁卫涛 郑飞飞 郑宇航 于 2019-09-25 设计创作，主要内容包括：本发明涉及ABS材料技术领域,具体涉及一种免喷涂ABS材料及其制备方法,包括如下重量份的原料：ABS100份、填料10-20份、颜料20-30份、润滑剂1-5份、抗氧化剂0.5-2份。本发明在ABS中加入颜料使其具有一定的美学效果,能够取代现有的喷漆件,简化工艺流程,节约生产成本,同时本发明在ABS材料中加入适量的填料增强其机械性能,能够达到应用要求。(The invention relates to the technical field of ABS materials, in particular to a spraying-free ABS material and a preparation method thereof, wherein the spraying-free ABS material comprises the following raw materials in parts by weight: 100 parts of ABS, 10-20 parts of filler, 20-30 parts of pigment, 1-5 parts of lubricant and 0.5-2 parts of antioxidant. The ABS material has the advantages that the pigment is added into the ABS material, so that the ABS material has certain aesthetic effect, the existing paint spraying piece can be replaced, the process flow is simplified, the production cost is saved, meanwhile, a proper amount of filler is added into the ABS material to enhance the mechanical property of the ABS material, and the application requirement can be met.)

1. The spraying-free ABS material is characterized in that: the feed comprises the following raw materials in parts by weight:

2. the spraying-free ABS material of claim 1, which is characterized in that: the melt index of the ABS at the temperature of 220 ℃/10Kg is 40-50 g/min.

3. The spraying-free ABS material of claim 1, which is characterized in that: the filler is at least one of calcium carbonate, modified glass fiber, carbon nano tube and graphene.

4. The spraying-free ABS material of claim 1, which is characterized in that: the pigment is pearl powder and/or metal powder.

5. The spraying-free ABS material of claim 4, which is characterized in that: the pearl powder is mica powder with the particle size of 10-25 mu m.

6. The spraying-free ABS material of claim 4, which is characterized in that: the metal powder is at least one of aluminum powder, copper powder, zinc powder, lead powder, titanium powder and stainless steel powder.

7. The spraying-free ABS material of claim 1, which is characterized in that: the lubricant is calcium stearate and/or zinc stearate.

8. The spraying-free ABS material of claim 1, which is characterized in that: the antioxidant is at least one of antioxidant 1010, antioxidant 168 and antioxidant 1076.

9. The preparation method of the spraying-free ABS material as claimed in any of claims 1 to 8, characterized in that: the method comprises the following steps: and uniformly mixing the raw materials, and then putting the mixture into a double-screw extruder for melt extrusion granulation to obtain the spraying-free ABS material.

Technical Field

The invention relates to the technical field of ABS materials, in particular to a spraying-free ABS material and a preparation method thereof.

Background

Along with more and more attention to environmental problems, countries in the world have come out under the large environments of strict household appliance environmental regulations and the like, and the embodying of enterprise social responsibility, the spraying-free material product gradually shows the competitiveness, and the spraying-free aesthetic resin can duplicate the colorful and colorful tone, pearlescence, flashing effect, metallic luster, texture and other special effects produced by spray painting, so that the product design trend is the client demand of differentiation, individuation, diversification and differentiation, the production process can be really reduced in the production process, the yield is improved, the energy conservation and emission reduction are realized, and the coating can be widely applied to the fields of artware, toys, household appliances, automobiles, electronic products, sports goods, office supplies and the like.

At present, the spraying-free resin is prepared by adding metal powder, pearl powder and other effect powder with special color and luster into resin materials. Generally, the spraying-free ABS material has general fluidity, so scratches are easily left on the surface in the processing process, and the appearance of the ABS material is influenced; and the use of ABS materials with higher flow properties results in lower strength of the article.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a spraying-free ABS material and a preparation method thereof.

The purpose of the invention is realized by the following technical scheme:

the spraying-free ABS material comprises the following raw materials in parts by weight:

the ABS material has the advantages that the pigment is added into the ABS material, so that the ABS material has certain aesthetic effect, the existing paint spraying piece can be replaced, the process flow is simplified, the production cost is saved, meanwhile, a proper amount of filler is added into the ABS material to enhance the mechanical property of the ABS material, and the application requirement can be met.

Wherein the melt index of the ABS at the temperature of 220 ℃/10Kg is 40-50 g/min. The high-fluidity ABS adopted by the invention is beneficial to injection molding, reduces the possibility of flow marks of the produced product, is also beneficial to the dispersion of the filler and the pigment, and improves the comprehensive mechanical property.

Wherein the filler is at least one of calcium carbonate, modified glass fiber, carbon nanotube and graphene. The mechanical strength of ABS materials is improved to different degrees by different fillers, the relative improvement effect of calcium carbonate is not much different from that of pigments, but the cost is lower; the carbon nano tube and the graphene obviously improve the mechanical property of the ABS material, and the self color of the carbon nano tube and the graphene is also beneficial to producing dark products.

However, the toughness of the ABS material is improved by the three fillers, which is not the same as that of the glass fiber, but the glass fiber can also seriously reduce the processing fluidity of the ABS material, and the risk of flow marks is higher. Therefore, the invention modifies the glass fiber, and the specific modification method comprises the following steps:

adding 1-3 parts by weight of corn starch into 100 parts by weight of water, heating to 90-95 ℃, gelatinizing for 40-60min, then adding 0.4-0.6 part by weight of chitosan, 0.01-0.03 part by weight of glycerol, 0.01-0.03 part by weight of polyvinyl alcohol, 0.03-0.05 part by weight of sodium sulfate, 0.05-0.07 part by weight of octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate and 0.6-0.8 part by weight of montmorillonite, oscillating and dispersing for 20-30min at the conditions of 20-40kHz and 40-50 ℃, then adding 10-20 parts by weight of glass fiber, oscillating and dispersing for 20-30min at the conditions of 20-40kHz and 40-50 ℃ to obtain the modified glass fiber.

According to the invention, the corn starch is modified by chitosan and octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate, so that the obtained cationic chitosan modified corn starch has good affinity with glass fiber and good film forming property, but the modified starch is often used as a sizing agent of the glass fiber, has good adhesion to the glass fiber and good film forming capability, and the sized glass fiber has good compatibility with a high molecular polymer and can be used for spinning because of the binding and bundling property to the glass fiber. However, in the technical field of polymer blending modification, although modified starch has good compatibility with ABS, the glass fiber agglomeration phenomenon is more serious due to the bonding property of the modified starch, and the modified starch has poor fluidity and is not suitable for spraying-free materials. The montmorillonite is added in the modification of the glass fiber, the montmorillonite has a strong cation exchange function and can be adhered to the cation chitosan modified corn starch, the cation chitosan modified corn starch can be inserted between layers of the montmorillonite, so the starch and the montmorillonite have good bonding property, the montmorillonite added between the starch film and the glass fiber can enhance the lubricating property of the glass fiber, and the glass fiber is easy to separate from each other under the lubricating effect of the montmorillonite in the melting process, so the modified glass fiber has better compatibility with ABS and better fluidity, the dispersion problem and the fluidity problem of the glass fiber are effectively solved, and the integral mechanical strength of the ABS material is improved.

The pigment is pearl powder and/or metal powder, the pearl powder has better wear resistance, and the metal powder has higher glossiness, which is determined according to the requirements.

Wherein the pearl powder is mica powder with the particle size of 10-25 μm.

Wherein the metal powder is at least one of aluminum powder, copper powder, zinc powder, lead powder, titanium powder and stainless steel powder.

Wherein the lubricant is calcium stearate and/or zinc stearate.

Wherein the antioxidant is at least one of antioxidant 1010, antioxidant 168 and antioxidant 1076.

The preparation method of the spraying-free ABS material comprises the following steps: and uniformly mixing the raw materials, and then putting the mixture into a double-screw extruder for melt extrusion granulation to obtain the spraying-free ABS material.

The invention has the beneficial effects that: the ABS material has the advantages that the pigment is added into the ABS material, so that the ABS material has certain aesthetic effect, the existing paint spraying piece can be replaced, the process flow is simplified, the production cost is saved, meanwhile, a proper amount of filler is added into the ABS material to enhance the mechanical property of the ABS material, and the application requirement can be met.

Detailed Description

The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.