1. Preparation of a new type of aromatic side chain sulfonated diamine.
Taking 4,4′-diaminodiphenyl ether as raw material, reacting with p-hydroxybenzenesulfonic acid after oxidation and bromination, and finally obtaining a novel aromatic side chain type sulfonated diamine through reduction reaction. In the novel fragrant side chain kind sulfonated diamine of the here and now innovation, the hydrophilic team sulfonic acid group is located on the side chain group.Since its spatial position is far away from the main chain, the proton conduction efficiency is improved and the influence on the main chain structure is avoided.
The new aromatic side chain sulfonated diamine can be prepared with dianhydride monomers and non-sulfonated diamine monomers to obtain sulfonated polyimides. The sulfonated polyimides can be used to prepare Performance and Proton Conductivity of Proton Exchange Membranes. The novel aromatic side chain sulfonated diamines have good application prospects in proton exchange membrane fuel cells.
2. Prepare a high temperature and corrosion resistant adhesive,
It includes (by mass percentage), 30% to 40% of p-hydroxybenzenesulfonic acid-nitroacetaldehyde-adhesive latex; the catalyst is caustic alkali or triphenylphosphine, and the content is 1-2%; Inorganic flame retardant, which is hydroquinone or p-phenol, with a content of 1-3%; modified nano-magnesium oxide, 2-20%; inorganic flame retardant, which is magnesium hydroxide, aluminum hydroxide and magnesium-aluminum hydrotalcite with 2% : 7: 3 parts by mass, the content of the inorganic flame retardant is 5% to 10%; the balance is phenolic resin.
Wherein, the p-hydroxybenzenesulfonic acid-nitroacetaldehyde-glue latex contains 20wt% of p-hydroxybenzenesulfonic acid, 20wt% of nitroacetaldehyde, 3wt% to 5wt% of carbon black, 5wt% to 10wt% of Nanoscale silicon dioxide powder, 5wt%-10wt% nanoscale zirconia powder, 5wt%-10wt% antioxidant and 1wt%-2wt% dispersant, and the rest are latex emulsion.
3. Prepare a high-viscosity adhesive,
It includes (by mass percentage), 30% to 40% of p-hydroxybenzenesulfonic acid-nitroacetaldehyde-glue latex; the catalyst is caustic alkali or triphenylphosphine, and the content is 1~2%; polymerization inhibition agent, which is hydroquinone or p-phenol, with a content of 1~3%; fumed silica, 2~20%; tackifier, which is γ-methacryloyloxypropyltrimethylsilane and propylene The amide is a mixture with a mass ratio of 10:1, and the content is 5% to 10%; the balance is phenolic resin.
Wherein, the p-hydroxybenzenesulfonic acid-nitroacetaldehyde-adhesive latex contains 20wt% of p-hydroxybenzenesulfonic acid, 20wt% of nitroacetaldehyde, 3wt% to 5wt% of oxidized starch, 5wt% to 10wt% of Nanoscale silicon dioxide powder, 5wt%~10wt% nanoscale zirconia powder, 5wt%~10wt% antioxidant and 1wt%~2wt% dispersant, and the rest are latex emulsion.
4. Prepare a naphthalene-based water decreasing agent,
The approach consists of the adhering to steps: (1) sulfonating methylnaphthalene as well as phenol respectively to acquire a sulfonated methylnaphthalene product and a p-hydroxybenzenesulfonic acid material; (2) carrying out a hydrolysis response on the sulfonated methylnaphthalene material, and also azeotropically eliminates without treatment The reacted methylnaphthalene or its homologue, the remaining sulfonated methylnaphthalene product gets in the reaction in step (3 ); (3) the sulfonated methylnaphthalene material acquired symphonious (2 ), the p-hydroxyl team gotten in step (1) The formaldehyde acidified by the focused sulfuric acid of the benzenesulfonic acid material executes a condensation response to acquire a compressed product; (4) in the condensation product acquired in step (3 ), an alkaline service is added to execute a neutralization reaction to a pH value of 7.5 to 9, and the reaction ends up to acquire a naphthalene-based reducing agent. Water agent.
The above-mentioned naphthalene-based water minimizing agent has excellent properties such as good flexibility to cement, great workability of concrete, strong plastic retention performance, small loss of concrete over time, high water reduction rate, etc; and also the prep work approach is straightforward in process as well as response problems. It is simple to regulate, as well as it can additionally minimize the production expense of naphthalene water decreasing representative.
5. Encapsulation material for semiconductor light-emitting parts with high warm dissipation, involving the technology of semiconductor light-emitting parts.