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High-inflaming-retarding modified phenolic resin foamed plastic and preparation method thereof

A technology of phenolic resin and foam plastics, applied in the field of foam plastics, can solve problems such as poor processing performance, uneven dispersion, and unstable performance, and achieve the effects of improving flexibility, excellent comprehensive performance, and similar cell sizes

Active Publication Date: 2016-02-10
芜湖市京桥精密智造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the rigid structure characteristics of both phenolic resin and melamine formaldehyde resin, the simple compounding of the two results in uneven dispersion, unstable performance and poor processability due to phase separation.

Method used

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  • High-inflaming-retarding modified phenolic resin foamed plastic and preparation method thereof
  • High-inflaming-retarding modified phenolic resin foamed plastic and preparation method thereof
  • High-inflaming-retarding modified phenolic resin foamed plastic and preparation method thereof

Examples

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Effect test

Embodiment 1

[0020] The present invention proposes a highly flame-retardant modified phenolic resin foam, which includes the following raw materials in parts by weight: 100 parts of modified phenolic resin, 5 parts of polysiloxane, 15 parts of methylene chloride, 2 parts of accelerator, and nitrile rubber 20 parts, 10 parts of curing agent;

[0021] The preparation process of the modified phenolic resin comprises: after mixing 100 parts of phenol and 180 parts of 30wt% formaldehyde solution by weight, the temperature is raised to 40°C, and 25wt% sodium hydroxide solution is added to adjust the pH value to 9- 10. Raise the temperature to 60°C, stir and react for 1.5h, add KH-5602 parts, raise the temperature to 90°C at a heating rate of 3°C / min, stir and react for 3h, cool to room temperature, and obtain a colloidal solution; to the colloidal solution Add melamine formaldehyde prepolymer to the mixture, heat up to 80°C, stir and react for 3 hours under nitrogen, add acid to adjust the pH to...

Embodiment 2

[0024] The present invention proposes a highly flame-retardant modified phenolic resin foam, which includes the following raw materials in parts by weight: 100 parts of modified phenolic resin, 20 parts of polyoxyethylene ether, 6 parts of isopentane, 8 parts of accelerator, polyurethane prepolymerized 10 parts of body, 18 parts of curing agent;

[0025] The preparation process of the modified phenolic resin comprises: after mixing 100 parts of phenol and 150 parts of 37wt% formaldehyde solution by weight, the temperature is raised to 50°C, and 15wt% sodium hydroxide solution is added to adjust the pH value to 9- 10. Raise the temperature to 80°C, stir and react for 0.5h, add KH-5606 parts, raise the temperature to 100°C at a heating rate of 2°C / min, stir and react for 1h, and cool to room temperature to obtain a colloidal solution; to the colloidal solution Add melamine formaldehyde prepolymer to the mixture, heat up to 100°C, stir and react under nitrogen for 3 hours, add ac...

Embodiment 3

[0028] The present invention proposes a highly flame-retardant modified phenolic resin foam, which comprises the following raw materials in parts by weight: 100 parts of modified phenolic resin, 12 parts of sorbitan fatty acid ester, 10 parts of n-pentane, 5 parts of accelerator, 15 parts of epoxy resin, 14 parts of curing agent;

[0029]The preparation process of the modified phenolic resin comprises: after mixing 100 parts of phenol and 165 parts of 33wt% formaldehyde solution by weight, the temperature is raised to 42°C, and 20wt% sodium hydroxide solution is added to adjust the pH value to 9- 10. Raise the temperature to 75°C, stir and react for 0.5h, add KH-5604 parts, raise the temperature to 98°C at a heating rate of 2.5°C / min, stir and react for 1h, cool to room temperature, and obtain a colloidal liquid; Add melamine-formaldehyde prepolymer to the mixture, raise the temperature to 98°C, stir and react for 2 hours under nitrogen, add acid to adjust the pH to 7-8, and d...

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Abstract

The invention discloses high-inflaming-retarding modified phenolic resin foamed plastic and a preparation method thereof. The high-inflaming-retarding modified phenolic resin foamed plastic comprises the following raw materials in parts by weight: 100 parts of modified phenolic resin, 5-20 parts of a surfactant, 6-15 parts of a foaming agent, 2-8 parts of an accelerant, 10-20 parts of a flexibilizer and 10-18 parts of a curing agent. The prepared high-inflaming-retarding modified phenolic resin foamed plastic has excellent flame retardant property and is improved to a higher extent in tenacity and strength.

Description

technical field [0001] The invention relates to the technical field of foamed plastics, in particular to a highly flame-retardant modified phenolic resin foamed plastic and a preparation method thereof. Background technique [0002] Phenolic foam has the reputation of "the king of thermal insulation materials". It has good heat insulation and high temperature resistance, and is the third generation of fireproof and thermal insulation materials. Because of its outstanding characteristics such as low thermal conductivity, heat insulation, light weight, and insulation, it has broad application prospects. However, due to the shortcomings of phenolic foam plastics such as high brittleness, easy pulverization and slag loss, and poor toughness, its application range and service life are seriously restricted. Therefore, researchers have conducted a lot of research on the modification of phenolic foam plastics. LeiShiwen et al. found that the use of nanoporous structures can signif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/14C08L83/04C08L9/02C08L71/02C08L75/04C08L63/00C08K3/34C08K3/30C08J9/14C08G8/28C08G8/10
Inventor 彭其周
Owner 芜湖市京桥精密智造有限公司
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