Flame retardant for plastics and preparation method thereof
A technology for flame retardants and plastics, applied in the field of flame retardants for plastics and its preparation, can solve the problems of poor flame retardant effects of flame retardants, and achieve the effects of improved water resistance, optimistic development and application prospects, and excellent stability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
specific Embodiment approach 1
[0010] Embodiment 1: The flame retardant for plastics in this embodiment is composed of 28.7% to 40.7% formaldehyde, 39.7% to 47.3% urea, 0.5% to 1.5% hexamethylenetetramine, 1.6% to 2.8% It is made of polyvinyl alcohol, 1.8%-24.9% modified graphite, and 4.6%-5.9% ammonium chloride and hydrochloric acid mixed solution.
specific Embodiment approach 2
[0011] Specific embodiment two: the difference between this embodiment and specific embodiment one is: modified graphite adopts Hummer method to carry out oxidation treatment to graphite and obtains, and concrete operation is as follows: Add graphite, concentrated sulfuric acid, sodium nitrate in four-necked bottle , add potassium permanganate under ice bath conditions, react at 35°C for 30 minutes, add deionized water, react at 98°C for 30 minutes, filter and wash immediately, obtain a filter cake after drying, and then perform ultrasonication to obtain modified graphite . Others are the same as in the first embodiment.
specific Embodiment approach 3
[0012] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the mixed solution of ammonium chloride and hydrochloric acid is that 2 grams of ammonium chloride and 10 mL of hydrochloric acid with a concentration of 10% by mass are added to 90 mL made in water. Others are the same as in the first or second embodiment.
[0013] Embodiment 4: The preparation method of the flame retardant for plastics described in Embodiment 1 is carried out in the following steps:
[0014] 1. Weigh 28.7%-40.7% formaldehyde, 39.7%-47.3% urea, 0.5%-1.5% hexamethylenetetramine, 1.6%-2.8% polyvinyl alcohol, 1.8%-24.9% modified graphite, and 4.6% to 5.9% ammonium chloride and hydrochloric acid mixture;
[0015] 2. Add the weighed modified graphite into the reaction vessel, then add formaldehyde and polyvinyl alcohol, heat to 45-50°C, stir until the polyvinyl alcohol is dissolved, then add hexamethylenetetramine, and heat up to 80°C Finally, add...
PUM
| Property | Measurement | Unit |
|---|---|---|
| oxygen index | aaaaa | aaaaa |
| oxygen index | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More