53results about How to "Stable chemical and physical properties" patented technology

The invention belongs to the field of polyurethane foam sealants and in particular relates to a colored polyurethane foam sealant as well as a preparation method and application thereof. The colored polyurethane foam sealant is prepared from the following components in parts by mass: 30 percent to 40 percent of paraffin wax, 10 percent to 30 percent of polyether polyol, 20 percent to 40 percent of polymethylene polyphenyl isocyanate (MDI), 2 percent to 5 percent of a stabilizer, 2 percent to 5 percent of a catalyst, 2 percent to 5 percent of a solvent and 5 percent to 10 percent of pigment. The preparation method of the colored polyurethane foam sealant comprises the following steps: mixing the components in an environment of 20 DEG C to 50 DEG C and stirring until all the components are completely dissolved; adding a mixture and the solvent into a pressure-resisting container at a certain ratio under the condition that dimethyl ether gas is fed, and sufficiently shaking to obtain a finished product. The colored polyurethane foam sealant has the beneficial effects that the colored polyurethane foam sealant is used for rockworks, artificial stones and artificial driftwoods in the field of manufacturing and decoration and the field of aquascapes; the pigment is blended so that the color is very consistent to a real landscape and the landscape is vivid; the colored polyurethane foam sealant is safe and reliable and has strong plasticity, so that the aquascape cost is reduced.

The invention provides an XPE environment-friendly foam material for an anti-static / flame-retardant vehicle and a preparation method of the XPE environment-friendly foam material. The XPE environment-friendly foam material is mainly prepared from, by weight, 60-80 parts of PE resin, 4-8 parts of anti-static agent, 20-30 parts of self-made composite flame retardant, 5-20 parts of foaming agent, 2-5 parts of cross-linking agent and 3-5 parts of blowing promoter. The material is prepared through extrusion of an XPE master slice in a single-screw extruder, calendaring, continuous normal-pressure foaming in a foaming furnace, cooling and shaping, and trimming and coiling. Anti-static and flame-retardant performance is integrated in the XPE foam material, the formulation is simple and scientific, the material has the anti-static performance and the flame-retardant performance, chemical and physical performance is stable, electrostatic induction and inflammability are completely eliminated, and the foam material is safe, free of toxins and smells and environmentally friendly, and saves energy.

The invention relates to a stripping treatment method for a cotton-polyester blended fabric and aims to solve the problem in stripping treatment of the cotton-polyester blended fabric. The method comprises the following steps: swelling, dissolving, reducing and stripping the fabric at a high temperature in a dyeing tester, washing and drying, so that the color of the cotton-polyester blended fabric is removed, and the cotton-polyester blended fabric restores to the state before dyeing. The stripping method is advanced in process, detailed and accurate in data, environment-friendly and good in stripping effect, the stripping rate is 94.97 percent, the physical and chemical properties and mechanical property of the stripped cotton-polyester blended fabric are stable, and the method is an ideal stripping treatment method for the cotton-polyester blended fabric.

The invention relates to antibacterial health-care fiber yarn which is prepared from the following components in parts by weight: 8-14 parts of natural plant extract, 23-36 parts of silk, 12-17 partsof bamboo charcoal fiber, 5-9 parts of pomegranate peel, 6-11 parts of chitin, 9-14 parts of acetic acid, 0.9-1.8 parts of ferroferric oxide and 1-3 parts of aluminum chloride, wherein the natural plant extract includes aloe, rhizoma coptidis, gromwell roots and Indian mockstrawberry herb. The invention also relates to a preparation method of the antibacterial health-care fiber yarn. The fiber yarn produced according to the formula and the method has stable chemical and physical properties; by adding the natural plant extract, the fiber yarn has inhibitory effects on staphylococcus aureus, candida albicans, escherichia coli and the like; the fiber yarn also has the health-care effects of promoting blood circulation, calming mind and the like; and the fiber yarn is lasting in effect, is less affected by the washing frequency and is suitable for production of textiles such as underwear, bedding, home decoration and the like.

The invention discloses a bottle cap assembly separating materials and water. The bottle cap assembly is composed of a bottle cap and an opening, wherein the bottle cap and the opening are matched through meshed threads, and a cutting knife facing towards the bottle cap is arranged in the opening. The bottle cap assembly is characterized in that a material barrel is arranged in the bottle cap, and a gap capable of sufficiently containing the thickness of the opening is reserved between the material barrel and inner side threads of the bottle cap; a sealing film is arranged on the opening of the material barrel; a safety belt is arranged on the opening in the outer edge of the bottle cap, and a blocking edge for limiting the position of the safety belt is arranged on the outer side of the opening. The bottle cap assembly is provided with a beverage containing cavity, and is convenient in brewing operation and simple in structure. In addition, mixing is completed before bottle opening, and sanitation and health are achieved.

A disclosed oil-resistant plastic product is characterized by comprising the following raw materials in parts by weight: 40-80 parts of polyvinyl chloride, 30-50 parts of nitrile-butadiene rubber, 42-62 parts of dibutyl phthalate, 0.6-1.0 part of a vulcanizing agent, 0.12-0.20 part of a promoter DM, 1.8-2.2 parts of a sulfuration activator, 0.2-0.6 part of a softening agent, 0.4-0.6 part of an anti-aging agent, 0.8-1.2 parts of an anti-oxidant, 1.0-1.4 parts of barium stearate, 1.6-2.0 parts of lead stearate, 22-42 parts of half-reinforced carbon black and 3-5 parts of coumarone resin. Compared with the prior art, the advantages comprise that (1) the produced plastic product is low in price and simple in production technology; and (2) the produced product still has stable chemical and physical performances under the condition of long-term immersing in oil stain, and the surface of the plastic is not dissolved by oil stain.