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Nano composite fire retardant parent material, preparation method and application

A flame-retardant masterbatch and nano-composite technology, which is applied in the direction of fire-resistant coatings, etc., can solve the problems of plastic substrates with greater influence on mechanical properties, low melting point and boiling point, and easy to be volatilized by heat, so as to achieve less damage to comprehensive mechanical properties and improved performance , easily controlled effects

Inactive Publication Date: 2006-04-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used phosphorus flame retardants such as triphenyl phosphate, triphenyl phosphite, triethyl phosphate, etc. have relatively low melting points and boiling points, and are easily volatilized by heat during processing. The mechanical properties are greatly affected and are greatly restricted in use.

Method used

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  • Nano composite fire retardant parent material, preparation method and application
  • Nano composite fire retardant parent material, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 Preparation of organomontmorillonite

[0047] First, add 10.0g of sodium montmorillonite to 300ml of water, stir and heat up to 70°C to form a water dispersion, then add 100ml of 5.4g of octadecyltrimethylammonium chloride (OTAC, Guangzhou Lizhong Industry and Trade Co., Ltd. ) aqueous solution was added to the aqueous dispersion of sodium montmorillonite, and stirred at 70°C for 20h. Let it cool down to room temperature, discharge, filter and wash to remove impurities 3-5 times, until the filtrate is tested to be free of chloride ions with silver nitrate, then dried at 80°C to constant weight and finely ground to obtain a white powdery organic montmorillonite Soil removal (OMMT).

[0048] Preparation of phenolic epoxy resin / organic montmorillonite nanocomposite flame retardant masterbatch

[0049] 100g novolac epoxy resin was heated up to 70°C, 5g organic montmorillonite (OMMT) and 0.5g silane coupling agent KH560 were added, and stirred for 2 hours to o...

Embodiment 2

[0056] The preparation method and reaction conditions of NER / OMMT nano composite flame retardant master batch of the present invention are as embodiment 1, keep the mass ratio (2: 1) and total consumption (20wt%) of NER / OMMT nano composite flame retardant master batch and TPP Change the mass ratio of organic montmorillonite and novolac epoxy resin in the flame retardant masterbatch, the effect of the mass ratio of organic montmorillonite to novolac epoxy resin on the oxygen index and mechanical properties of flame retardant PP is shown in Table 2 . It can be seen that when the mass ratio of OMMT to novolac epoxy resin is 5:100, the oxygen index of flame-retardant PP is the highest, and the comprehensive mechanical properties are the best; when the mass ratio of OMMT to novolac epoxy resin exceeds 5:100, the oxygen index And the mechanical properties decrease instead. When the amount of OMMT is appropriate, it is beneficial for the novolac epoxy resin to enter the OMMT layer, ...

Embodiment 3

[0060] The preparation method and reaction conditions of NER / OMMT nanocomposite flame retardant masterbatch of the present invention are as embodiment 1, keep the mass ratio (100:5) of novolac epoxy resin and organic montmorillonite and NER / OMMT nanocomposite flame retardant masterbatch The total consumption (20wt%) of material and TPP is constant, changes the mass ratio of NER / OMMT nano composite flame retardant masterbatch and PP, the mass ratio of gained NER / OMMT nanocomposite flame retardant masterbatch and TPP is compared to the oxygen of flame retardant PP The effects of indices and mechanical properties are shown in Table 3. It can be seen that the use of NER / OMMT nanocomposite flame retardant masterbatch or TPP alone cannot achieve a good flame retardant effect. As the proportion of NER / OMMT increases, the oxygen index of flame retardant PP increases first and then decreases. trend. Considering the flame retardancy and mechanical properties comprehensively and combini...

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Abstract

A flame-retarding nano-class composite mother material is an epoxy phenolic resin-organic montmovillonite material. Its preparing process features that the silane coupling agent is used to make the epoxy phenolic resin come between layers of the long-chain alkyl ammonium salt modified Na-base montmorillonite. It can be matched with organic phosphate to prepare flame-retarding plastics.

Description

technical field [0001] The invention relates to the field of nano-composite materials composed of organic matter and inorganic matter, in particular to a novolac epoxy resin / organic montmorillonite nano-composite flame-retardant masterbatch. [0002] The invention also relates to a preparation method of the nanocomposite flame retardant masterbatch. [0003] The invention also relates to the application of the nanocomposite flame retardant masterbatch in the preparation of flame retardant plastics. Background technique [0004] With the vigorous development of polymer materials, plastics are increasingly widely used in various fields of the national economy, but most plastics are relatively flammable and have fire hazards, which limit their use. Therefore, the research and development of flame-retardant plastics has become a hot topic. The traditional halogen-containing flame retardant system will produce a large amount of toxic smoke when burnin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/04C08K5/54C09K21/14
Inventor 曾幸荣李田张远江刘波徐忠英
Owner SOUTH CHINA UNIV OF TECH
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