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Shady safety helmet and preparation method thereof

A safety helmet and cool technology, which is applied in the field of construction and decoration safety helmets, can solve the problems of high temperature accumulation on the user's head, workers' reluctance to wear it, poor heat dissipation, etc., and achieve impact and puncture kinetic energy, excellent comprehensive performance, good The effect of cooling performance

Active Publication Date: 2013-11-06
广东景龙建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing safety helmets in the construction and decoration industry mainly consider the impact and puncture kinetic energy of the impact objects, and basically do not consider the prevention of ultraviolet radiation and heat dissipation. Therefore, the existing polycarbonate plastic safety helmets used in the construction and decoration industry are widespread. Poor heat dissipation, when used under the sun for a long time, it is easy to cause the user's head to accumulate high temperature, making people uncomfortable, and even causing problems that workers do not want to wear

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method for a cool safety helmet, comprising the steps of:

[0019] (1) Preparation of polyoxymethylene plastic: According to the mass percentage, mix 70% of paraformaldehyde, 20% of dioxane and 10% of boron trifluoride diethyl ether, and mix them at a temperature of 65°C. Reacted for 2 hours to produce polyoxymethylene;

[0020] (2) In terms of mass percentage, 75% of the polyoxymethylene obtained in step (1), 20% of nano-sized mica flake powder, 1% of nano-sized magnesium aluminum oxide and 4% of zinc oxide are evenly mixed, melted and injected into the helmet production mold, Make a cool hard hat.

Embodiment 2

[0022] A preparation method for a cool safety helmet, comprising the steps of:

[0023] (1) Preparation of polyoxymethylene plastic: According to the mass percentage, mix 73% of paraformaldehyde, 15% of dioxane and 12% of boron trifluoride diethyl ether, and mix them at a temperature of 70°C. Reacted for 3 hours to produce polyoxymethylene;

[0024] (2) In terms of mass percentage, 80% of the polyoxymethylene obtained in step (1), 15% of nano-sized mica flake powder, 3% of nano-sized magnesium aluminum oxide and 2% of zinc oxide are evenly mixed, melted and injected into the helmet production mold, Make a cool hard hat.

Embodiment 3

[0026] A preparation method for a cool safety helmet, comprising the steps of:

[0027] (1) Preparation of polyoxymethylene plastic: According to the mass percentage, mix 71% of paraformaldehyde, 18% of dioxane and 11% of boron trifluoride ether, and mix them at a temperature of 68°C Reacted for 2.5 hours to produce polyoxymethylene;

[0028] (2) In terms of mass percentage, 80% of the polyoxymethylene obtained in step (1), 16% of nano-sized mica flake powder, 1% of nano-sized magnesium aluminum oxide and 3% of zinc oxide are evenly mixed, melted and injected into the helmet production mold, Make a cool hard hat.

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PUM

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Abstract

The invention discloses a shady safety helmet and a preparation method thereof. The method comprises the following steps of: uniformly mixing 70 to 73 mass percent of trioxymethylene, 15 to 20 mass percent of dioxacyclopentane and 10 to 15 mass percent of boron trifluoride diethyl ether, and reacting at the temperature of 65 to 70 DEG C for 2 to 3 hours to obtain polyformaldehyde; and uniformly mixing 75 to 80 percent of polyformaldehyde, 15 to 20 percent of nanoscale sheet mica powder, 1 to 3 percent of nanoscale aluminum magnesium oxide and 1 to 5 percent of zinc oxide, melting, and injecting into a safety helmet production mould to obtain the shady safety helmet. According to the production process, zinc oxide, aluminum magnesium oxide and sheet mica powder are added into a polyformaldehyde base material, so the shady safety helmet has a good ultraviolet-resistant effect; and compared with a polycarbonate plastic safety helmet sold on the market, the shady safety helmet can reduce the temperature by 8 to 10 DEG C under the sunlight of 35 to 37 DEG C in a sealing state within 1 hour.

Description

technical field [0001] The invention relates to a safety helmet for building decoration, in particular to a shade safety helmet and a preparation method thereof. Background technique [0002] Safety helmets are necessary equipment in decoration projects and are used in large quantities. Generally speaking, the main function of the helmet is to prevent impact objects from hurting the head. The safety helmet is mainly composed of a cap shell, a cap lining, a lower chin strap and a rear hoop. The cap shell is hemispherical, firm, smooth and elastic, and the impact and puncture kinetic energy of the striking object is mainly borne by the cap shell. There is a certain space between the cap shell and the cap liner, which can buffer and disperse the instantaneous impact force, so as to avoid or reduce the direct injury to the head. Impact absorption performance, puncture resistance performance, lateral rigidity, electrical insulation and flame retardancy are the basic technical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L59/02C08K3/34C08K3/22C08G2/10
Inventor 陈贤耿
Owner 广东景龙建设集团有限公司
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