Explosion-proof energy absorption sandwich material and preparation method thereof
A sandwich and foam plastic technology, applied in the preparation of explosion-proof and energy-absorbing sandwich materials, in the field of explosion-proof and energy-absorbing sandwich materials
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0043] see figure 1 , a flow chart of steps for a preparation method of an explosion-proof energy-absorbing sandwich material provided by the present invention, comprising the following steps:
[0044] Step S110: preparing an explosion-proof polyurea elastomer;
[0045] In some preferred embodiments, in the step of preparing the explosion-proof polyurea elastomer, the following steps are specifically included:
[0046] Step S111: In an inert gas environment, heat the polyether polyol to 95°C-100°C under stirring, dehydrate it under a vacuum of -0.1MPa for 1-15 hours, release the vacuum and cool down to below 40°C, add polyisocyanate, and React at 80°C for 2 hours, then lower the temperature to below 60°C, add propylene carbonate, stir to measure the NCO value, discharge the material, and filter to obtain the isocyanate-terminated semi-prepolymer component A: wherein, the polyether polyol and the The mass ratio of polyisocyanate is 100:(660~15);
[0047] Specifically, put th...
Embodiment 1
[0089] Preparation of explosion-proof polyurea elastomer:
[0090] The formula of explosion-proof polyurea elastomer is composed of A component and B component. A component is a prepolymer of polytetrahydrofuran ether glycol PTMG1000 and HMDI diisocyanate; B component is composed of amino polyether, aromatic amine chain extender and color pulp composition.
[0091] The composition and mass parts of A component and B component are as shown in Table 1:
[0092] Table 1 Example 1 spray polyurea explosion-proof elastomer components
[0093] A component parts by mass PTMG1000 100 HMDI 155 PC 12 B component parts by mass Jeffamine D-2000 30 THF-170 30 Jeffamine T-5000 5 E-100 20 Unilink 4200) 13 color paste 215
[0094] Among them, the -NCO content of the prepared prepolymer of component A is 16.55%, the solid content is ≥ 95%, the viscosity (25°C) is 800mPa·s, and the density (25°C) is 1.08-1.12g / mL; The...
Embodiment 2
[0106] Preparation of explosion-proof polyurea elastomer:
[0107] The formula of explosion-proof polyurea elastomer is composed of A component and B component. A component is a prepolymer of polytetrahydrofuran ether glycol PTMG1000 and IPDI diisocyanate; B component is composed of diamino polyether P-1000, polytetrahydrofuran ether Diol PTMG1000, aliphatic diamine and color paste composition.
[0108] The composition and mass parts of A component and B component are as shown in Table 3:
[0109] The performance parameter of table 3 embodiment 2 polyurea elastomers
[0110] A component parts by mass PTMG1000 100 IPDI 655 B component parts by mass PTMG-1000 45 P-1000 30 Aliphatic diamine Clearlink1000 20 color paste 5 catalyst 0.25
[0111] Among them, the -NCO content of the prepared prepolymer of component A is 10%, the solid content is ≥ 98%, the viscosity (25°C) is 800mPa·s, and the density (25°C) is 1.08-1....
PUM
| Property | Measurement | Unit |
|---|---|---|
| Hydroxyl value | aaaaa | aaaaa |
| Hydroxyl value | aaaaa | aaaaa |
| Hydroxyl value | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More