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Antibacterial color master batch for polystyrene hard plastic toys

A polystyrene and polystyrene technology, applied in the field of plastics, can solve the problems of non-washability, discoloration, and peculiar smell, and achieve the effect of improving safety

Inactive Publication Date: 2020-07-03
嵊州市仲明新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the articles made of plastic materials do not have additional functions such as antibacterial, deodorizing, or purification. After long-term use, they still have the disadvantages of easy breeding of bacteria, discoloration, or odor. In the prior art, antibacterial is often added to plastics. Among them, nano-silver antibacterial agents are widely used. Although plastics added with nano-silver have good antibacterial properties, silver atoms are easy to precipitate on the surface and lose, do not have washability, and cannot maintain the antibacterial properties of plastics for a long time

Method used

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  • Antibacterial color master batch for polystyrene hard plastic toys
  • Antibacterial color master batch for polystyrene hard plastic toys
  • Antibacterial color master batch for polystyrene hard plastic toys

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see figure 1 and figure 2 As shown, the preparation of the modifier

[0033] Q1. Add 0.1mol o-aminothiophenol, 0.12mol 5-chlorovaleric acid, 10mmol cesium carbonate and 300ml solvent dioxane in the reaction flask, stir and mix evenly, then transfer to the microwave reactor, microwave heating reaction The power is 560W, the temperature is 115°C, and the reaction time is 3h. After the reaction is completed, cool to room temperature and recrystallize from absolute ethanol to obtain the thiazole intermediate A1;

[0034] Q2. Weigh 10mmol of thiazole intermediate A and 12mmol of 4-vinylbenzylamine into the reaction flask, add 100ml of ethanol aqueous solution with a mass fraction of 90%, stir and dissolve, then add 15ml of a 20% mass fraction of hydroxide Sodium aqueous solution, after adding, heat up to 105°C while stirring, and stir for 6 hours. After the reaction, separate the liquid, separate the organic phase and the water phase, add 10ml of 20% sodium hydroxide aque...

Embodiment 2

[0038] Preparation of modified polystyrene

[0039] Add 10g of styrene monomer, 0.2g of cuprous chloride and 200ml of solvent xylene in the reaction kettle, stir and mix evenly, add 0.15g of initiator dibenzoyl peroxide, feed nitrogen, replace the Air, heat up to 95°C while stirring, carry out pre-polymerization for 30min, then cool down to 50°C, add 1.8g modifier A3 and 0.15g initiator dibenzoyl peroxide, continue to heat up to 95°C, and stir for 3h Polycondensation reaction, add 200ml methanol to precipitate the product, after washing with water and drying, you can get the following image 3 The modified polystyrene of formula A structure.

[0040] The infrared characterization of modified polystyrene is as follows: IR(KBr): (benzene ring), 2898(-CH 2 -), 1624-1598 (thiazole ring), 1401 (C-N + )cm- 1 .

Embodiment 3

[0042] An antibacterial color masterbatch for polystyrene hard plastic toys, comprising the following raw materials in parts by weight: 100g modified polystyrene, 20g epoxy resin, 6g polyamide resin, 3g toner, 1g lubricant;

[0043] Described lubricant is zinc stearate;

[0044] The preparation method of this antibacterial color masterbatch comprises the following steps:

[0045] S1, first put the modified polystyrene, epoxy resin, polyamide resin, toner, and lubricant into a drying oven, and dry at 105°C for 10 hours;

[0046] S2, adding the dried raw materials in step S1 into a ball mill, and grinding and mixing for 60 minutes;

[0047] S3. Put the mixed raw materials into a screw extruder, melt and extrude at a temperature of 190-245° C., and after cooling, add to a granulator for granulation to obtain antibacterial color masterbatch.

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Abstract

The invention discloses an antibacterial color master batch for polystyrene hard plastic toys. The antibacterial color master batch comprises the following raw materials in parts by weight: 100-150 parts of modified polystyrene, 15-20 parts of epoxy resin, 5-10 parts of polyamide resin, 2-6 parts of toner and 1-3 parts of a lubricant. The preparation method of the antibacterial color master batchcomprises the following steps: S1, firstly, putting the modified polystyrene, the epoxy resin, the polyamide resin, the toner and the lubricant into a drying box and carrying out drying, S2, adding the raw materials dried in the step S1 into a ball mill and carrying out grinding, and S3, putting the mixed raw materials into a screw extruder, carrying out melt extrusion at the temperature of 190-245 DEG C, cooling, then adding into a granulator and carrying out granulation, so as to obtain antibacterial color master batch. The prepared modified polystyrene contains antibacterial double-active-group quaternary ammonium salt and thiazole ring which are firmly connected into polystyrene in a chemical bond manner, so that the modified polystyrene has good washability, the surface is not easy toseparate out, and the antibacterial property of the toy can be maintained for a long time.

Description

technical field [0001] The invention belongs to the technical field of plastics, in particular to an antibacterial color masterbatch for polystyrene hard plastic toys. Background technique [0002] Polystyrene hard plastic (GPPS, HIPS, ABS, AS, SMA, SMMA) has rich sources of raw materials, cheap, non-toxic, easy to form and process, and has high rigidity and toughness, good mechanical strength, and good transparency , low hygroscopicity, high surface finish, good heat resistance and cold resistance, good chemical stability, etc., are widely used in packaging materials, daily necessities, household appliances, automobile manufacturing, children's toys and other fields. Polystyrene is one of the four general-purpose plastic varieties. In the children's toy industry, polystyrene plastic toys are used in environments where they are easy to collide and fall. Life and other aspects have incomparable advantages. [0003] However, most of the articles made of plastic materials do ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/00C08L63/00C08L77/00C08J3/22C08F293/00C08L25/06
CPCC08F293/00C08J3/226C08J2325/06C08J2453/00C08J2463/00C08J2477/00
Inventor 不公告发明人
Owner 嵊州市仲明新材料科技有限公司
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