High-flame retardant unsaturated polyester composite material and preparation method thereof
A polyester composite material and unsaturated technology, which is applied in the field of high flame-retardant unsaturated polyester composite material and its preparation, can solve the problem of complex processing technology, poor flame retardancy performance, and large-scale industrial application. Production and other issues, to achieve the effect of simple production process, good compatibility, and avoid delamination and precipitation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0038] The preparation of pure unsaturated polyester specifically comprises the steps:
[0039] Add 2 parts of benzoyl peroxide to 100 parts of unsaturated polyester, stir at a speed of 500r / min for 30-60 minutes, then pour into the mold, keep the temperature at 80°C for 1 hour, and keep the temperature at 110°C for 3 hours, take it out, and then cool and demould.
[0040] Referring to Table 1, it can be seen that the oxygen index of Example 1 is only 19.0%, and does not pass the vertical combustion test.
[0041] See attached image 3 , which is the thermogravimetric (a) and differential heat (b) curves of Example 1 in a nitrogen atmosphere. It can be seen that the residual carbon rate of Example 1 is 6.1% after 500°C, and the thermal stability is relatively poor.
Embodiment 2
[0043] Add 15 parts of ammonium polyphosphate, 5 parts of melamine, 5 parts of pentaerythritol and 2 parts of benzoyl peroxide to 75 parts of unsaturated polyester, stir at a speed of 500r / min for 20-60min, pour into the mold, and ℃ for 1 hour, 110 ℃ for 3 hours, take it out and cool it for demoulding.
[0044] Referring to Table 1, it can be seen that the oxygen index of Example 2 is 27.0%, which is 8% higher than that of Example 1 (19.0%), and it has passed the vertical combustion test and reached the V-0 level.
Embodiment 3
[0047] Disperse 15 parts of ammonium polyphosphate in absolute ethanol, and stir at 400r / min for 10-40min in a water bath at 70°C to obtain solution A;
[0048] Dissolve 1 part of KH-550 in absolute ethanol, adjust the pH value to 3.5-5.0 with acetic acid to obtain solution B;
[0049] Add solution B to solution A, and stir at a speed of 600r / min for 40-80min to obtain solution C;
[0050] After evaporating excess alcohol from solution C, wash with distilled water until the pH value reaches neutral, dry for 1 to 3 hours, pulverize, and sieve through a 200-mesh sieve to obtain modified ammonium polyphosphate;
[0051] Add 6 parts of modified ammonium polyphosphate, 2 parts of melamine, 2 parts of pentaerythritol and 2 parts of benzoyl peroxide into 90 parts of unsaturated polyester resin, stir at a speed of 500r / min for 20-60min to obtain a solution D. Pour into the mold, keep the temperature at 80°C for 1 hour, and keep the temperature at 110°C for 3 hours, take it out and co...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| oxygen index | aaaaa | aaaaa |
| carbon residual rate | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More