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Melamine resin-type nano-cotton granule deodorant and preparation method thereof

A technology of melamine resin and nano-cotton, applied in the field of polymer, can solve the problem of insufficient absorption of aldehyde substances, and achieve the effect of excellent absorption performance

Inactive Publication Date: 2017-07-25
CHANGZHOU PLASKING POLYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that a large amount of aldehydes cannot be fully absorbed during the processing of PP materials in the prior art, and to provide a melamine resin-type nano-cotton particle deodorant, the melamine-based nano-cotton The granular deodorant is prepared from a modified melamine resin polymer and an extract;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Preparation of modified melamine resin polymer:

[0028] 1) Hydroxymethylation reaction: Put melamine and formaldehyde aqueous solution in water in a reaction kettle and stir, use sodium ethoxide as alkali to adjust the pH of the aqueous solution to be 9.2-10.5 and reflux for 1-2 hours; then add p-hydroxybenzaldehyde dropwise to react 3-5 hours; the molar ratio of melamine:formaldehyde:p-hydroxybenzaldehyde is 1:1.5:1.5; 2) Condensation reaction: reduce the temperature to 30-35°C, then add dropwise 2N hydrochloric acid in ethanol to adjust the pH=5.8 -6.2, then heat up to 65-75°C and react for 5-6 hours; lower the temperature to 10-15°C, then add dropwise sodium bicarbonate aqueous solution to adjust the pH between 6.5-7.2 to obtain modified melamine resin polymer precipitate to be modified Melamine resin precursor; 3) Foam molding: The modified melamine resin precursor is molded at high temperature into the original embryo with a thickness of 3-7mm; then the original e...

Embodiment 2

[0034] Compared with Example 1, except that the molar ratio of melamine, formaldehyde, and p-hydroxybenzaldehyde in the methylolation reaction is 1:2:2, the rest is the same as Example 1.

Embodiment 3

[0036] Compared with Example 1, the extract was changed to a saturated aqueous sodium bicarbonate solution, and the rest of the materials and the preparation method were exactly the same as in Example 1.

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PUM

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Abstract

The invention belongs to the technical field of polymers and particularly relates to a melamine resin-type nano-cotton granule deodorant. The melamine resin-type nano-cotton granule deodorant is prepared from a modified melamine resin polymer and extract. The modified melamine resin polymer is obtained by modification of p-hydroxybenzaldehyde and a phenolic hydroxyl group is introduced into the polymer. The phenolic hydroxyl group can produce a certain antioxidant effect and can capture aldehydes such as formaldehyde, acetaldehyde and acrolein produced by PP hot processing. When a use ratio of the melamine resin-type nano-cotton granule deodorant is 0.3 wt%, the processed PP material has formaldehyde content of less than 10 mg / kg and satisfies the formaldehyde content requirements on the automotive interior parts.

Description

Technical field [0001] The invention belongs to the field of polymer technology, and specifically relates to a melamine resin type nano-cotton particle deodorant. Background technique [0002] In order to meet different characteristic requirements and increase the stability of products, additives are used in the synthesis and modification of plastics, but these additives contain volatile organic compounds (VOC for short), which are the main cause of plastic odor. In addition, small-molecule organics produced by thermal degradation of plastics and additives during processing are another source of VOC. [0003] In order to reduce the content of volatile organic substances (VOC), it is necessary to use low-odor products to replace those unpleasant additives and reduce residual monomers in plastics. However, alternative products often sacrifice the mechanical properties of the product or increase the product due to the improved odor Cost of production. [0004] At present, chemical rea...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2253/202B01D2257/708B01J20/043B01J20/22B01J20/265B01J20/28007B01J20/28097
Inventor 朱金平乔江浩冯飞马晓敏叶蕾程开封
Owner CHANGZHOU PLASKING POLYMER TECH
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