9 results about "Epichlorohydrin" patented technology

The invention discloses a fireproof anti-abrasion rubber shoe sole material and a preparation method thereof. The prepared fireproof anti-abrasion rubber shoe sole material is composed of, by weight,acrylonitrile-butadiene- styrene copolymer, epichlorohydrin rubber, polyacrylate rubber, polyurethane rubber, PVDF resin, white mica, a silane coupling agent, absolute ethyl alcohol, nano zinc oxide,magnesium stearate, palm oil and a foaming agent. According to the fireproof anti-abrasion rubber shoe sole material, all the raw materials are promoted mutually, by modifying the white mica, the anti-abrasion performance of a fireproof anti-abrasion rubber shoe sole is further improved, and the prepared fireproof anti-abrasion rubber shoe sole material has prominent mechanical properties; the fireproof anti-abrasion rubber shoe sole material has high elasticity, prevents slipping, is resistant to abrasion and good in oxidation resistance, and meanwhile has the advantages of being superior infireproof performance, safe, environmentally friendly and comfortable to wear.

The present invention relates to a papermaking wet strengthening agent preparation method, and belongs to the field of pulping papermaking. The papermaking wet strengthening agent preparation method comprises: dissolving diethylenetriamine in water to prepare a solution with a mass percent concentration of 30%; adding adipic acid to the solution, wherein the temperature of the solution is automatically increased at this time, water volatilizes along with the temperature increase, and the solution temperature can achieve 110-120 DEG C; adding a modifier M to the obtained solution, and continuously heating under stirring to achieve a temperature of 140-180 DEG C; and finally slowly adding water to the solution so as to cool the solution to achieve a temperature of 70 DEG C to produce an intermediate polyamide polyamine, continuously adding epichlorohydrin to the intermediate solution, carrying out a reaction for about 2 h, maintaining the pH value of the reaction system at 7.5-8.5, and stopping the reaction to obtain the wet strengthening agent. The prepared modified PAE wet strengthening agent can be directly added to the pulp, provides a better enhancing effect compared with other enhancing agents, and has characteristics of low price, wastewater pollution reduction, and weakening of corrosion on papermaking equipment.

The invention discloses a rubber tube and a preparation method thereof, belonging to the technical field of paints. The rubber tube is prepared from the following raw materials in parts by weight: 60-70 parts of epichlorohydrin rubber, 15-20 parts of fast-extruding carbon black, 1-2 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 2-4 parts of N,N'-diphenyl-p-phenylenediamine, 3-5 parts of titanium white, 5-8 parts of antimony trioxide, 4-5 parts of decabromodiphenylethane, 5-10 parts of calcium hydroxide, 0.5-1 part of stearic acid, 8-12 parts of talcum powder, 8-12 parts of silicon dioxide and 1-5 parts of magnesium oxide. Compared with the rubber tube in the prior art, the rubber tube disclosed in the invention has the advantages of favorable high temperature resistance, favorable low temperature resistance, favorable wear resistance, favorable aging resistance and the like, and is environment-friendly.

The invention relates to a durable antibacterial waterborne woodenware coating and a preparation method thereof. The coating comprises the following components: water soluble alkyd resin, a waterbornepolyurethane polyol dispersion body, an amino resin mixture, nano TiO2, nano ZnO, an association type thickener, a leveling agent, a defoamer, a basic wetting agent and deionized water, wherein the amino resin mixture is composed of methylated amino resin and ketone crosslinked polyamide polyamine epichlorohydrin with the weight ratio of 1:(0.2-0.6). The waterborne coating provided by the invention has durable antibacterial activity and mildew-proof performance, has a wide antibacterial spectrum, and has the killing effect on common pathogens such as staphylococcus aureus, streptococcus pneumonia, candida albicans, pseudomonas aeruginosa and aspergillus niger reaching 99.90% or more; through SGS ASTM F1980 tests, the woodenware coating still has the bacteriostasis rate of 99.30% or more 5years later, and has 5 years or more antibacterial effect.

The invention delivers a charging roller which is capable of preventing current leakage to a photoreceptor throughout life-time and which has a stable resistance value throughout life-time. The charging roller contains a metal core and a rubber layer formed on the core. The rubber layer is an epichlorohydrin-based rubber base material to which an electronic conductive agent and an ionic conductive agent are added. The rubber layer is subjected to surface processing by spraying the surface with a solution containing an isocyanate compound and heating. The amount of the electronic conductive agent added to the rubber base material is limited so that a volume resistivity when only the electronic conductive agent is added to the rubber base material is 1.46×10⁶ Ω·cm or greater. In addition, the amount of the added ionic conductive agent is increased so that a volume resistivity when the electronic conductive agent and the ionic conductive agent are added to the rubber base material is 1.93×10⁶ Ω·cm or less.