Bonding layer for modified plastics and preparation method and system of bonding layer on filler

A bonding layer and filler technology, applied in the field of modified plastics, can solve the problems of easy peeling of fillers and resins, reducing product strength, non-wetting of fillers and plastics, etc., achieving excellent processability and improving mechanical properties. Effect

Active Publication Date: 2020-04-07
SHENZHEN FRD SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of preparing modified plastics, it is usually necessary to process the surface of the filled material. If it is not processed, many problems may occur, including the non-infiltration of the filler and the plastic, the inability of the filler to disperse in the plastic and agglomeration of the filler, and the Precipitation and falling off from the plastic, large gaps between the filler and the plastic interface, etc.
Due to the occurrence of the above situation, it will lead to defects in the molded modified plastic products. These defects reduce the strength of the product on the one hand, and on the other hand cannot fully reflect the advantages of the modification.
However, in most cases, the interaction between the interfaces that can actually be provided is limited, mainly due to the van der Waals force, and it is still easy to peel off the filler and the resin under the action of a strong mechanical external force

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The preparation method of the adhesive layer on the filler of the present invention, in an optional embodiment, the preparation method may comprise the following steps:

[0029] S1. Mix the binder and the diluent in parts by mass to form a binder solution.

[0030] S2, adding the filler into the binding solution for infiltration.

[0031] Fillers may be, but are not limited to, granular fillers, amorphous powder fillers, microbeads, chopped fibers or needle whiskers.

[0032] Specifically, under the flow of the binding solution, the filler is slowly added into the binding solution. The soaking time is 15-60 minutes, which can be increased or decreased according to the soaking degree of the filler in the bonding solution.

[0033] S3. Add a stabilizer to the binding solution and stir.

[0034] After soaking in step S2, according to the suspension and sedimentation of the filling in the binding solution, add a stabilizer and stir, so that the filling is fully dispersed...

Embodiment 1

[0057] Weigh 12 parts of binder, 86 parts of diluent, and 2 parts of stabilizer; mix the above raw materials for later use, and put them into an impregnation device together with carbon nanotubes; after immersion for 30 minutes, put the mixture into a filter device for filtration, and obtain Layered mixture agglomerates; put the mixture agglomerates into the drying device, and dry them at 220°C for 15 minutes, and the gas generated by drying is introduced into the diluent recovery device to obtain the dried mixture agglomerates, which are put into the dispersion device , and redisperse the mixture into a powder.

[0058] The carbon nanotubes with the adhesive layer on the surface are finally obtained through the above steps. Fill carbon nanotubes with bonding layer on the surface into ABS with V0 halogen-free flame retardant performance at an additive amount of 3%, compared with carbon nanotubes without bonding layer, on the premise that other properties are equal , the tensi...

Embodiment 2

[0060] Weigh 87 parts of binder, 12.5 parts of diluent, and 0.5 parts of stabilizer; mix the above raw materials for later use, and put them into the impregnation device together with chopped carbon fibers; after 30 minutes of immersion, put the mixture into the filter device to obtain The mixture agglomerate; put the mixture agglomerate into the drying device, and dry it at 220°C for 15 minutes, and the gas generated by drying is introduced into the diluent recovery device to obtain the dried mixture agglomerate, which is put into the filler dispersion device , to redisperse the mixture into granules.

[0061] The chopped carbon fibers with bonding coating on the surface are finally obtained through the above process. The chopped carbon fiber with bonded coating on the surface is filled into PC with V0 halogen-free flame retardant performance at an additive amount of 12%. Compared with the chopped carbon fiber without bonded layer, other properties are equal Under the premis...

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PUM

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Abstract

The invention discloses a bonding layer for modified plastics and a preparation method and system of the bonding layer on filler. The bonding layer comprises the following raw materials by mass: 10-90parts of a bonding agent, 10-90 parts of a diluent and 0.5-2 parts of a stabilizer. The bonding layer provided by the invention is attached to filler and is used for bonding the resin and the fillerin the modified plastic. The bonding layer can recover certain lubricity at the processing temperature of modified plastics, facilitates the mixing and dispersion of the filler in the resin, and has excellent processability; and when the modified plastic recovers to a conventional use temperature, the bonding layer is cooled and generates strong viscosity, so that the gap between the resin and thefiller is effectively bonded. By using the filler attached with the bonding layer to prepare modified plastics, modified plastics with high mechanical properties can be obtained, and the purpose of improving the mechanical properties of modified plastics is achieved.

Description

technical field [0001] The invention relates to the technical field of modified plastics, in particular to a bonding layer for modified plastics and its preparation method and system on fillers. Background technique [0002] In the prior art, a very common process in the modified plastic process is to add fillers, which have various shapes, including powder, scale, fiber, granular, microbead and whisker, etc.; size There are also differences, ranging from nanoscale to millimeter scale, with a wide range of distribution. In the process of preparing modified plastics, it is usually necessary to process the surface of the filled material. If it is not processed, many problems may occur, including the non-infiltration of the filler and the plastic, the inability of the filler to disperse in the plastic and agglomeration of the filler, and the Precipitation and falling off from the plastic, large gaps between the filler and the plastic interface, etc. Due to the occurrence of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K9/02C08K3/04C08K7/06C08L55/02C08L69/00
CPCC08K7/06C08K9/02C08K9/08C08K2201/011C08L2201/02C08L2201/22C08K3/041C08L55/02C08L69/00
Inventor 萧怡然
Owner SHENZHEN FRD SCI & TECH
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