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Preparation method of PLA composite material used for baby bath

A composite material and baby bathtub technology, applied in the field of preparation of PLA composite materials, can solve the problems of poor toughness, impact resistance, unsuitable for manufacturing baby bathtubs, poor thermal stability, etc., and achieve the effect of improving toughness

Inactive Publication Date: 2015-04-08
SUZHOU WILDER IND & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PLA material has good biocompatibility, gloss, transparency and hand feeling, and also has certain bacteria resistance, flame retardancy and UV resistance, so it can be used to make baby products, but its toughness and impact resistance Poor, poor thermal stability and therefore unsuitable for baby tubs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method for the PLA composite material of baby bathtub, comprising the following steps:

[0022] (1) Add 5 parts by weight of nano-attapulgite and 5 parts by weight of nano-mica powder into a high-speed mixer and stir for 10 minutes, dissolve the silane coupling agent in ethanol and add it to the high-speed mixer in a spray form, and discharge after stirring for 30 minutes. Obtain modified nanopowder after drying;

[0023] (2) The PLA of 70 parts by weight, the antioxidant 1010 of 1 part by weight, the trimethylolpropane of 9 parts by weight, the maleic anhydride of 8 parts by weight, the stearic acid of 2 parts by weight are put into dry box and dry , the drying temperature is 80 DEG C, and the drying time is 8 hours. After drying, add the modified nano-powder obtained in step (1) into a high-speed mixer and mix evenly to obtain a mixture;

[0024] (3) Put the mixture obtained in step (2) into a twin-screw extruder to extrude and granulate. material;

...

Embodiment 2

[0027] A preparation method for the PLA composite material of baby bathtub, comprising the following steps:

[0028] (1) Add 2 parts by weight of nano-attapulgite and 2 parts by weight of nano-mica powder into a high-speed mixer and stir for 10 minutes, dissolve the silane coupling agent in ethanol and add it into the high-speed mixer in the form of a spray, and discharge after stirring for 30 minutes. Obtain modified nanopowder after drying;

[0029] (2) The PLA of 85 parts by weight, the antioxidant 1010 of 0.2 parts by weight, the trimethylolpropane of 7.6 parts by weight, the maleic anhydride of 3 parts by weight, the stearic acid of 0.2 parts by weight are put into dry box and dry , the drying temperature is 80 DEG C, and the drying time is 8 hours. After drying, add the modified nano-powder obtained in step (1) into a high-speed mixer and mix evenly to obtain a mixture;

[0030] (3) Put the mixture obtained in step (2) into a twin-screw extruder to extrude and granulate...

Embodiment 3

[0033] A preparation method for the PLA composite material of baby bathtub, comprising the following steps:

[0034] (1) 4 parts by weight of nano-attapulgite and 3 parts by weight of nano-mica powder were added to a high-speed mixer and stirred for 10 minutes, and the silane coupling agent was dissolved in ethanol and then added to a high-speed mixer in the form of a spray, and discharged after stirring for 30 minutes. Obtain modified nanopowder after drying;

[0035] (2) The PLA of 82 parts by weight, the antioxidant 1010 of 0.5 parts by weight, the trimethylolpropane of 5 parts by weight, the maleic anhydride of 5 parts by weight, the stearic acid of 0.5 parts by weight are put into drying oven , the drying temperature is 80 DEG C, and the drying time is 8 hours. After drying, add the modified nano-powder obtained in step (1) into a high-speed mixer and mix evenly to obtain a mixture;

[0036] (3) Put the mixture obtained in step (2) into a twin-screw extruder to extrude a...

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Abstract

The invention provides a preparation method of a PLA composite material used for baby bath, which comprises the following steps: 1)adding nano attapulgite and nano mica powder in a high speed mixer for stirring for 10 minutes, dissolving a silane coupling agent in ethanol and then adding into the high speed mixer in a spray form, stirring for 30 minutes and then discharging, drying to obtain the modified nano powder; 2)placing PLA, an anti-oxidant, a flexibilizer, a cross-linking agent and a lubricant in a drying box for drying, adding with the modified nano powder in the high speed mixer for uniformly mixing to obtain a mixture; 3)adding the mixture in the step 2) into a double screw extruder for extruding and granulating to obtain the pellet; and 4)placing the pellet in a drying box for drying to obtain the PLA composite material used for the baby bath. The produced material has the advantages of good toughness, impact resistance and thermostability, is friendly to environment, and is adapted to baby bath manufacture.

Description

Technical field: [0001] The invention relates to a preparation method of a PLA composite material used for baby bathtubs. Background technique: [0002] PLA is the English abbreviation of the biodegradable plastic polylactic acid, which is full written as: polylactic acid, also known as polylactide (polylactide), which belongs to polyester. PLA is a polymer obtained by polymerizing lactic acid as the main raw material. It mainly uses corn and cassava as raw materials. The source of raw materials is sufficient and renewable. Green and environmentally friendly polymer materials. PLA material has good biocompatibility, gloss, transparency and hand feeling, and also has certain bacteria resistance, flame retardancy and UV resistance, so it can be used to make baby products, but its toughness and impact resistance Poor, poor thermal stability, so not suitable for making baby bathtubs. Invention content: [0003] The technical problem to be solved by the present invention is ...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08K13/06C08K9/06C08K3/34B29B9/06B29C47/92B29C48/92
Inventor 刘玲
Owner SUZHOU WILDER IND & TRADE
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