阅读说明：本技术 一种塑料耐刮擦剂母粒 (Plastic scratch-resistant agent master batch ) 是由 李�亨 赵健 李抒啸 于 2019-12-16 设计创作，主要内容包括：本发明涉及高分子材料技术领域,尤其涉及一种塑料耐刮擦剂母粒,包括下述重量份的原料：马来酸酐2-4份,聚酰胺1-3份,甲基硅油1-2份,高分子量有机硅50-60份,载体树脂30-40份,吸味剂0.5-2份,所述高分子量有机硅包括高分子量有机硅A和高分子量有机硅B,所述高分子量有机硅A与高分子量有机硅B的质量比为2:1。本发明首先用高分子有机硅与马来酸酐进行接枝改性,然后再加入不同分子量的高分子有机硅与聚酰胺继续接枝改性,改性后得到的材料分散性增强,可以呈网状附着在产品表面,附着性更佳,同时改性后得到的材料耐刮擦性能也得到了显著增强。(The invention relates to the technical field of high polymer materials, and particularly relates to a plastic scratch-resistant agent master batch which comprises the following raw materials in parts by weight: 2-4 parts of maleic anhydride, 1-3 parts of polyamide, 1-2 parts of methyl silicone oil, 50-60 parts of high molecular weight organic silicon, 30-40 parts of carrier resin and 0.5-2 parts of odor absorber, wherein the high molecular weight organic silicon comprises high molecular weight organic silicon A and high molecular weight organic silicon B, and the mass ratio of the high molecular weight organic silicon A to the high molecular weight organic silicon B is 2: 1. According to the invention, firstly, macromolecular organic silicon and maleic anhydride are used for grafting modification, then macromolecular organic silicon and polyamide with different molecular weights are added for continuing grafting modification, the dispersibility of the modified material is enhanced, the modified material can be attached to the surface of a product in a net shape, the adhesiveness is better, and meanwhile, the scratch resistance of the modified material is also obviously enhanced.)

1. The scratch-resistant agent master batch for plastics is characterized in that: the feed comprises the following raw materials in parts by weight: 2-4 parts of maleic anhydride, 1-3 parts of polyamide, 1-2 parts of methyl silicone oil, 50-60 parts of high molecular weight organic silicon and 30-40 parts of carrier resin.

2. The plastic scratch resistant masterbatch according to claim 1, wherein the high molecular weight silicone comprises high molecular weight silicone A and high molecular weight silicone B, the high molecular weight silicone A has a molecular weight of 85 ten thousand, and the high molecular weight silicone B has a molecular weight of 90 ten thousand.

3. The plastic scratch resistant masterbatch according to claim 2, wherein the mass ratio of the high molecular weight silicone A to the high molecular weight silicone B is 2: 1.

4. The plastic scratch resistant master batch according to claim 1, wherein the carrier resin is any one of PA, PP, PE, PC, APS or ABS.

5. The plastic scratch resistant master batch according to any one of claims 1 to 4, which is characterized by comprising the following raw materials in parts by weight: 2-4 parts of maleic anhydride, 1-3 parts of polyamide, 1-2 parts of methyl silicone oil, 50-60 parts of high molecular weight organic silicon, 30-40 parts of carrier resin and 0.5-2 parts of odor absorber.

Technical Field

The invention relates to the technical field of high polymer materials, and particularly relates to a plastic scratch-resistant agent master batch.

Background

At present, plastics are widely applied, for example, polypropylene is widely applied to the fields of automobile interior and exterior trimming parts, electronic products and the like. However, plastics generally have a defect that the scratch resistance is poor, the surface of a product is easily scratched, so that the appearance attractiveness of the product is reduced, and the scratch on the surface of the product also has stress concentration, so that the use performance of the product is limited. In particular, the scratch resistance of plastics filled with talc is even worse, and the material yields under the action of indentation force, sliding force or transverse force, resulting in ductile/brittle failure and thus scratches. In the case of scratches, uneven surfaces produce uneven light scattering and "scratch whitening", which limits the use of plastics for parts with high scratch resistance requirements.

The traditional plastic scratch-resistant agent has poor effect, so that Chinese patent with publication number of CN107226953A discloses a scratch-resistant composite material which mainly adopts plastic resin and nano NbSe₂The coupling agent and the processing aid are compounded, and the nano NbSe₂The formed nano layer is attached to the surface of the plastic, so that the scratch resistance of the surface of the plastic can be greatly enhanced. However, such scratch resistant composites also suffer from the following disadvantages: low dispersibility, poor adhesion to the surface of the product, and, secondly, nano NbSe₂The cost of the product is higher, and the cost of the product is increased.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the plastic scratch-resistant agent master batch with good dispersibility, strong adhesive force and good scratch resistance.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the scratch-resistant agent master batch for the plastics comprises the following raw materials in parts by weight: 2-4 parts of maleic anhydride, 1-3 parts of polyamide, 1-2 parts of methyl silicone oil, 50-60 parts of high molecular weight organic silicon and 30-40 parts of carrier resin.

Preferably, the high molecular weight silicone comprises high molecular weight silicone a having a molecular weight of 85 ten thousand and high molecular weight silicone B having a molecular weight of 90 ten thousand.

Preferably, the mass ratio of the high molecular weight silicone a to the high molecular weight silicone B is 2: 1.

Preferably, the carrier resin is any one of PA, PP, PE, PC, APS or ABS.

Preferably, the feed comprises the following raw materials in parts by weight: 2-4 parts of maleic anhydride, 1-3 parts of polyamide, 1-2 parts of methyl silicone oil, 50-60 parts of high molecular weight organic silicon, 30-40 parts of carrier resin and 0.5-2 parts of odor absorber.

The invention has the beneficial effects that:

1. according to the invention, firstly, macromolecular organic silicon and maleic anhydride are used for grafting modification, then macromolecular organic silicon and polyamide with different molecular weights are added for continuing grafting modification, the dispersibility of the modified material is enhanced, the modified material can be attached to the surface of a product in a net shape, the adhesiveness is better, and meanwhile, the scratch resistance of the modified material is also obviously enhanced.

2. The invention adopts the macromolecular organic silicon as the main component, and compared with the nanometer material, the invention can reduce the manufacturing cost.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.

The scratch-resistant agent master batch for the plastics comprises the following raw materials in parts by weight: 2-4 parts of maleic anhydride, 1-3 parts of polyamide, 1-2 parts of methyl silicone oil, 50-60 parts of high molecular weight organic silicon and 30-40 parts of carrier resin. According to the invention, firstly, macromolecular organic silicon and maleic anhydride are used for grafting modification, then macromolecular organic silicon and polyamide with different molecular weights are added for continuing grafting modification, the dispersibility of the modified material is enhanced, the modified material can be attached to the surface of a product in a net shape, the adhesiveness is better, and meanwhile, the scratch resistance of the modified material is also obviously enhanced; the invention adopts the macromolecular organic silicon as the main component, and compared with the nanometer material, the invention can reduce the manufacturing cost.

Preferably, the high molecular weight silicone comprises high molecular weight silicone a having a molecular weight of 85 ten thousand and high molecular weight silicone B having a molecular weight of 90 ten thousand, the mass ratio of high molecular weight silicone a to high molecular weight silicone B being 2: 1. The invention uses high molecular weight organosilicon A and maleic anhydride to carry out graft modification, then adds high molecular weight organosilicon B and polyamide to carry out graft modification, adopts two kinds of organosilicon with different molecular weights to carry out graft modification with maleic anhydride and polyamide in sequence, and can enhance the dispersibility of the material.

Preferably, the carrier resin is any one of PA, PP, PE, PC, APS or ABS.

Preferably, the plastic scratch-resistant agent master batch comprises, by weight, 2-4 parts of maleic anhydride, 1-3 parts of polyamide, 1-2 parts of methyl silicone oil, 50-60 parts of high molecular weight organosilicon, 30-40 parts of carrier resin and 0.5-2 parts of odor absorber. The odor absorbing agent with a certain proportion is added in the invention, so that the odor of each component can be removed, and the harmful gas emitted by the product after the plastic surface is used is avoided.

The preparation method of the plastic scratch resistant agent master batch provided by the invention comprises the following steps: putting the high molecular weight organosilicon A and maleic anhydride into a reaction kettle according to a certain proportion for graft modification, adding the high molecular weight organosilicon B and polyamide according to a corresponding proportion after 1 hour, and continuing graft modification for 1 hour; placing the grafted and modified semi-finished first scratch-resistant agent, carrier resin, methyl silicone oil and a smell absorbing agent into an internal mixer in proportion for internal mixing for 1 hour to obtain a semi-finished scratch-resistant agent; adding the semi-finished product of the scratch-resistant agent into a double-screw extruder for extrusion molding to obtain finished product particles; and (3) homogenizing the finished product particles subjected to extrusion molding in a homogenizer for 2 hours to obtain the finished product.