Polymer material and preparation method thereof

A polymer material and polymer technology, applied in the field of plastic modification, can solve the problems of poor surface adhesion and poor sprayability, and achieve the effect of maximizing the guarantee, improving the wetting ability and increasing the polarity.

Pending Publication Date: 2021-01-05
CRERAX SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: the existing technical problems of poor surface adhesion and poor sprayability of polymer materials with low polarity

Method used

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  • Polymer material and preparation method thereof
  • Polymer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of modified styrene thermoplastic elastomer material:

[0029] With the styrene thermoplastic elastomer resin of 75 mass parts, the inorganic filler calcium carbonate of 5 mass parts, the polypropylene PP-g-MAH of the compatibilizer maleic anhydride graft of 8 mass parts, the interfacial modifier of 3 mass parts Hydroxyl-terminated "hyperbranched" polyolefin, 0.5 parts by mass of lubricant polyethylene wax, and 0.5 parts by mass of antioxidant 1010 are mixed evenly, and then added to the feed port of the twin-screw extruder, and the temperature of the extruder is controlled at 120 Between -160°C, prepare styrene thermoplastic elastomer resin modified masterbatch. The styrene thermoplastic elastomer material modified by expandable microspheres can be obtained by blending and injecting 4 parts of expandable microspheres 1 with the above-mentioned masterbatch. The material is injection molded into products in the range of 160-180°C, and the product-re...

Embodiment 2

[0031] A preparation method of modified polystyrene material:

[0032] 75 parts of polystyrene resin, 5 parts of inorganic filler quartz powder, 8 parts of PS grafted with maleic anhydride, 3 parts of interfacial modifier carboxyl-terminated "hyperbranched" polyolefin, 0.5 parts of Lubricant ERS and 0.5 parts of antioxidant 168 are mixed evenly, and then added to the feeding port of the twin-screw extruder. The temperature of the extruder is controlled between 120-180°C to prepare polystyrene modified masterbatch. 2 parts of expandable microspheres 1 and 2 parts of expandable microspheres 2 are blended with the above-mentioned masterbatch for injection molding to obtain a polystyrene material modified by expandable microspheres. The material is injection molded into products in the range of 160-190°C, and the product-related performance test results are shown in Table 1.

Embodiment 3

[0034] A preparation method of modified polyethylene material:

[0035]75 parts of polyethylene resin, 5 parts of inorganic filler talcum powder, 8 parts of polyethylene PE-g-MAH grafted with maleic anhydride, 3 parts of interface modifier "hyperbranched" polyolefin with terminal hydroxyl groups, 0.5 parts Lubricant erucamide and 0.5 parts of antioxidant 1076 are mixed evenly, and then added to the feed port of a twin-screw extruder, and the temperature of the extruder is controlled between 120-180°C to prepare polyethylene modified master batches. 2 parts of expandable microspheres 1 and 2 parts of expandable microspheres 2 are blended and injected with the above-mentioned masterbatch to obtain a polyethylene material modified by expandable microspheres. The material is injection molded into products in the range of 160-220°C, and the product-related performance test results are shown in Table 1.

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Abstract

The invention discloses a polymer material and a preparation method thereof. The polymer material comprises polymer material particles, expandable microspheres, inorganic filler and the like. The preparation method comprises the following steps: uniformly mixing the polymer material particles, the inorganic filler, a compatilizer, ane interface modifier, a lubricant and an antioxidant in proportion, and extruding and bracing the mixture through a twin-screw extruder to obtain modified polymer master batch; and blending the modified polymer particles with expandable microspheres, and preparingthe low-density sprayable polymer composite material by using a single-screw injection molding machine. Under the condition of ensuring the strength of the polymer material, the buckling deformation and the density of the polymer material are effectively improved so that the surface of the material becomes rougher, the wetting ability is improved, and the sprayability is enhanced. More active groups exist on the surfaces of the expandable microspheres, and the hyperbranched interface modification aid is combined so that the surface polarity of the polymer is increased, and the sprayability ofthe polymer is improved.

Description

technical field [0001] The invention relates to a low-density sprayable polymer material and a preparation method thereof, belonging to the field of plastic modification. Background technique [0002] At present, there are many polymer materials with good physical properties, such as polypropylene, polyethylene, polystyrene, etc., which are widely used in various industries such as home appliances, automobiles, and garden furniture. [0003] However, as we all know, these polymer materials are non-polar materials, and their adhesion to polar materials such as paints and coatings is extremely poor. When coating such products, it is usually necessary to use dichloroethane, plasma, flame, Treat the surface of the product with super strong water to polarize the surface of the product, thereby improving the adhesion of paint and paint, but these methods have certain limitations, such as easy pollution, high equipment cost, and low efficiency. [0004] Expandable microsphere is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L25/06C08L23/06C08L23/12C08L51/06C08L23/26C08K3/26C08K3/36C08K3/24C08K3/30C08K5/20C08K5/134C08K5/526C08K5/098C08J9/32
CPCC08J9/32C08J9/0061C08J9/0066C08J9/0095C08J9/0023C08J9/0038C08J9/0028C08J2353/02C08J2325/06C08J2323/06C08J2323/12C08J2451/06C08J2423/06C08J2423/26C08J2203/22
Inventor 高亮章超刘雪云何志兰
Owner CRERAX SCI & TECH CO LTD
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