Preparation process of polystyrene plastic used for electric toothbrush handle

A polystyrene plastic and preparation technology, applied in the field of brush handle materials, can solve the problems of low surface gloss, toughness and gloss can not meet the demand, high toughness requirements of the brush handle, etc., to achieve high gloss, physical Excellent mechanical properties and the effect of improving surface gloss

Inactive Publication Date: 2018-02-02
望江县南山刷业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Electric toothbrushes apply a lot of force to the brush handle when vibrating, which requires extremely high toughness of the brush handle. In addition, the surface gloss of polystyrene plastic is low, and the toughness and gloss of the current polystyrene plastic are still satisfactory. no demand

Method used

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  • Preparation process of polystyrene plastic used for electric toothbrush handle
  • Preparation process of polystyrene plastic used for electric toothbrush handle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation process of polystyrene plastic for the handle of an electric toothbrush, comprising the steps of:

[0021] S1. Dry 70 parts of polystyrene resin by weight at 70°C for 1 hour, add 20 parts of acrylonitrile-butadiene-styrene copolymer, 6 parts of polybutadiene resin, 2 parts of bentonite compound, 0.5 Part of emulsifier, 1.5 parts of dispersant, and 0.5 part of vulcanizing agent are mixed uniformly to obtain a premix;

[0022] S2. Send the premixed material into a single-screw extruder for extrusion, the extrusion pressure is 35MPa, and the temperature of the extruder is 115°C to obtain the extruded material;

[0023] S3. Send the extruded material into the mold, keep the temperature at 96° C. for 20 minutes, cool down to 60° C. and keep it for 1 hour, cool down, and release the mold to obtain polystyrene plastic for electric toothbrush handles.

Embodiment 2

[0025] A preparation process of polystyrene plastic for the handle of an electric toothbrush, comprising the steps of:

[0026] S1. Dry 80 parts of polystyrene resin by weight at 60°C for 2 hours, add 10 parts of acrylonitrile-butadiene-styrene copolymer, 12 parts of polybutadiene resin, 1 part of bentonite compound, 1.5 Part of emulsifier, 0.5 part of dispersant, and 1.5 part of vulcanizing agent are mixed uniformly to obtain a premix;

[0027] S2. Send the premixed material into a single-screw extruder for extrusion, the extrusion pressure is 20MPa, and the temperature of the extruder is 130°C to obtain the extruded material;

[0028] S3. Send the extruded material into the mold, keep the temperature at 90° C. for 30 minutes, cool down to 50° C. and keep it for 2 hours, cool down, and release the mold to obtain polystyrene plastic for electric toothbrush handles.

Embodiment 3

[0030] A preparation process of polystyrene plastic for the handle of an electric toothbrush, comprising the steps of:

[0031] S1. Dry 75 parts of polystyrene resin by weight at 66°C for 20 minutes, add 16 parts of acrylonitrile-butadiene-styrene copolymer, 8 parts of polybutadiene resin, 1.6 parts of bentonite compound, 1 Part of sodium dodecylsulfonate, 1.2 parts of carboxymethyl cellulose, and 1 part of azobisisoheptanonitrile are mixed uniformly to obtain a premix;

[0032] The MFR of polystyrene resin is 2.4g / 10min, the heat distortion temperature is 82°C, and the softening point is 103°C;

[0033] The bentonite composite is prepared by the following process: mix 30 parts of bentonite, 2 parts of glycidyl methacrylate, 4 parts of methyl methacrylate, 0.35 parts of disuccinic acid peroxide, and 80 parts of toluene in parts by weight, and add dropwise 2 parts of tert-dodecyl mercaptan, stirred for 40 minutes at a temperature of 80°C, with a stirring speed of 850 r / min, to...

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Abstract

The invention discloses a preparation process of a polystyrene plastic used for an electric toothbrush handle, and the preparation process comprises the following steps: drying 70 to 80 parts by weight of polystyrene resin at temperature of 60 to 70 DEG C for 1 to 2 hours, adding 10 to 20 parts by weight of an acrylonitrile-butadiene-styrene copolymer, 6 to 12 parts of polybutadiene resin, 1 to 2parts of a bentonite complex, 0.5 to 1.5 parts of an emulsifier, 0.5 to 1.5 parts of a disperser and 0.5 to 1.5 parts of a vulcanizing agent for mixing uniformly to obtain a premix; feeding the premixinto a single-screw extruder for extruding under the extrusion pressure of 20 to 35 MPa at extruder temperature of 115-130 DEG C to obtain an extruded material; sending the extruded material into a mold, thermally insulating at temperature of 90-96 DEG C for 20-30min, cooling to 50-60 DEG C, thermally insulating for 1-2h, cooling, and demoulding to obtain the polystyrene plastic used for the electric toothbrush handle.

Description

technical field [0001] The invention relates to the technical field of brush handle materials, in particular to a preparation process of polystyrene plastic for electric toothbrush handles. Background technique [0002] As a personal care appliance in the field of oral health care, the electric toothbrush generates high-frequency vibrations through the rapid rotation or vibration of the motor core, decomposes the toothpaste into fine foams, and then cleans the teeth deeply. Compared with ordinary toothbrushes, it is gradually accepted by consumers due to its ability to remove dental plaque more thoroughly and its advantages in reducing oral diseases including gingivitis, periodontal disease and gum bleeding more scientifically and effectively. of favor. [0003] From a structural point of view, the handle of an electric toothbrush is generally made of polystyrene plastic, which is a colorless, transparent beaded or granular amorphous thermoplastic resin, colorless, tasteles...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L55/02C08L47/00C08K13/06C08K9/04C08K3/34C08K5/5419C08K5/37B29C47/92B29C48/92
CPCC08L25/06B29C48/92B29C2948/92514B29C2948/92704C08L2205/03C08L55/02C08L47/00C08K13/06C08K9/08C08K3/34C08K5/5419C08K5/37
Inventor 方艳华
Owner 望江县南山刷业有限公司
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