41results about How to "Effectively adjust viscosity" patented technology

The invention provides a solvent-free interlayer polyurethane resin for automotive trim leather and preparation method thereof. The solvent-free interlayer polyurethane resin is composed of an A component and a B component in a mass ratio of (2.5: 1)-(1: 2.5) through the mixing; the A component is composed of diisocyanate, oligomer dihydric alcohol, micromolecular dihydric alcohol, micromolecular trihydric alcohol, catalyst, light / heat stabilizer, flatting agent and solvent-free color paste; the B component is composed of diisocyanate, triisocyanate, oligomer dihydric alcohol, micromolecular dihydric alcohol, micromolecular trihydric alcohol and antioxidant. The polyurethane resin prepared by the method disclosed by the invention can be used as the interlayer for the automotive trim leather, the high temperature durable performance and various mechanical properties of the automotive leather can be effectively guaranteed while meeting the hydrolysis resistance of the automotive leather product; the peeling strength of the prepared automotive leather product reaches up to 145N / 3cm, the hydrolysis resistance can reach the condition that the peeling strength still reaches up to 135N / 3cm after 10 weeks.

The invention relates to the field of health care products, in particular to a formula of health care products based on natto freeze-dried powder and ginkgo leaf extract, which is characterized in that: the formula is according to the mass ratio: natto freeze-dried powder 18~22 %, Ginkgo biloba extract 12~16%, Cassia seed extract 18~22%, Pueraria root extract 18~22%, Hawthorn extract 8~12%, Lycium barbarum powder 8~12%, Ginseng extract 3~7% , Vitamin C? 0.18~0.22%, Vitamin E? 0.013~0.017%, vitamin B1? 0.001~0.003%, vitamin B6? 0.001~0.003%, vitamin B12? 0.000004~0.000007%, folic acid 0.0003~0.0006%, the rest is starch slurry, the sum of the above components is 100%, The formula of the present invention can effectively regulate blood viscosity, reduce blood fat, dissolve thrombus, expand blood vessels, scavenge free radicals, resist oxidation, enhance human immunity, reduce the incidence of cardiovascular and cerebrovascular diseases in middle-aged and elderly people, and protect the cardiovascular and cerebrovascular systems of middle-aged and elderly people. It is of great and positive significance to promote the physical and healthy development of the middle-aged and elderly population.

A macromolecule-assisted method of deposition for a superconducting layer of a high-temperature superconductivity coating electrical conductor has the preparation method as follows: a. dissolving rare-earth acetate, barium acetate and cupric acetate in monoprop with a stoichiometric proportion that rare-earth: barium: cupric equals to 1:2:3 to acquire a precursor solution; b. adding PVB, PEG or PVP into the precursor solution with the weight ratio of 2-8:100 to acquire a coating colloid; c. coating the coating colloid on a substrate and heating for drying; d. placing the substrate in a tubular furnace to carry out decomposition heat treatment; e. rapidly heating up the furnace temperature to 800-900 DEG C under moist argon atmosphere for 5-15min, then lowering the temperature to 750-780 DEG C for 1-3 hours, and then lowering the temperature to 350-500 DEG C under the argon atmosphere for low temperature oxygen-permeation annealing treatment, and the superconducting layer is acquired by cooling. The method has the advantages of low cost and simple technique, which is applied to industrialized production; the superconducting layer prepared is characterized by high biaxial texture, flat and dense surface and good superconductivity.

The invention discloses a solvent-free, non-yellowing, high-transparency, highlight and bending-resistance polyurethane leather resin, and a preparation method and an application thereof. The solvent-free, non-yellowing, high-transparency, highlight and bending-resistance polyurethane leather resin comprises a resin A component and a resin B component; the ratio of the resin A component to the resin B component is 3:1 to 1:2 in mass, and the resin A component contains 30 wt%-45 wt% of a polyether polyol-aliphatic polyisocyanate prepolymer, and the resin B component contains 15 wt%-60 wt% of aliphatic diisocyanate. A synthetic leather surface layer is coated with the solvent-free, non-yellowing, high-transparency, highlight and bending-resistance polyurethane leather resin, synthetic leather is endowed with high-transparency and highlight aesthetic degree, and the bending resistance and other physical and mechanical properties of the non-yellowing synthetic leather are further improved;the bending strength at normal temperature is more than or equal to 200 thousand times, the bending resistance at the temperature of -20 DEG C is more than or equal to 50 thousand times, the synthetic leather is resistant to hydrolysis for 8 weeks, and the yellowing resistance level is more than or equal to 4.

The invention discloses a polyurethane resin used for non-solvent leather with high brightness and bending resistance, a preparation method and application. The polyurethane resin used for non-solventleather with high brightness and bending resistance comprises a resin component A and a resin component B; the resin component A comprises 30% to 45% of ether-ester polyhydric alcohol-aromatic polyisocyanates prepolymer; the resin component B comprises 15% to 60% of aromatic diisocyanate. The resin can be used for preparing polyurethane synthetic leather, the synthetic leather is high in brightness and attractive in appearance, the physical and mechanical properties, such as bending resistance, of the synthetic leather are improved preferably, the production operability of the non-solvent synthetic leather in the mass production process is improved, and the matching stability of the resin component A and the resin component B during machining is guaranteed.