30results about How to "Reduce yellowing rate" patented technology

The invention discloses a method for raising cool-season lawn grass heat resistance through a treatment of foliage spray of citric acid, and relates to the technical field of landscaping lawn management. The method includes the steps of: 1, Festuca arundinacea lawn building and planting, which includes the substeps of sowing and lawn management; and 2, foliage spray of a citric acid solution, wherein sodium citrate is prepared into an optimum concentration of 2mmol/L, and for the built Festuca arundinacea lawn, the sodium citrate solution is uniformly sprayed on the Festuca arundinacea lawn 100kg per mu through a foliage spray method at the high temperature initial stage in summer, and the sodium citrate solution is sprayed again after one week. The method for raising the cool-season lawn grass heat resistance through the treatment of foliage spray of the citric acid obviously raises the heat resistance of Festuca arundinacea by applying the citric acid to the Festuca arundinacea lawn, raises the lawn quality, prolongs the green period, and reduces the yellowing rate. In comparison with the method of seed selection of heat-resistant Festuca arundinacea, the method of the invention has the advantages of short period, fast effect, strong operationality, and low cost.

The invention discloses an anti-yellowing finishing process for light-colored fabrics. The anti-yellowing finishing process is implemented by adding an optimized anti-yellowing finishing process for four times in processing, dyeing and finishing processes of common light-colored fabrics, specifically, firstly, carrying out an anti-yellowing one-bath process simultaneously a dyeing process is performed, secondly, carrying out an anti-yellowing soaking process before soaping is performed, thirdly, carrying out an anti-yellowing one-bath process while the last washing process is performed, and finally carrying out an anti-yellowing finishing process in a heat setting process. The optimization of the four-time anti-yellowing finishing process effectively reduces the probability of yellowing of the light-colored fabrics, so that finished fabric products are balanced in color; the anti-yellowing finishing process for the light-colored fabrics disclosed by the invention has the advantages of environmental friendliness and high quality, and has strong practicability.

The invention belongs to the field of flower planting, and particularly relates to a large-scale planting method of fly-feather arrowroot. According to the large-scale planting method of fly-feather arrowroot, guttation of plants is limited by controlling temperature and humidity, proper fertilizer and water are added, the defects that guttation of fly-feather arrowroot is serious, and leaves etiolate in the planting process are overcome, and the requirement for large-scale planting is met.

The invention relates to a vulcanized black jean garment washing process. The vulcanized black jean garment washing process comprises the following steps of placing preprocessed jean garments into desizing solution for desizing treatment at 0-60 DEG C for 10-30 minutes, draining the desizing solution and washing the desized jean garments in clean water at room temperature; placing the desized jeangarments into enzyme solution for treatment at 30-40 DEG C for 15-60 minutes, draining the enzyme solution and washing the treated jean garments in clean water at room temperature; placing the treated jean garments in rinsing solution for treatment at 40-50 DEG C for 10-50 minutes, draining the rinsing solution and washing the rinsed jean garments in clean water at room temperature; adding dechlorinating deodorant into the rinsed jean garments for treatment at 30-40 DEG C for 5-15 minutes, draining the dechlorinating deodorant and washing the treated jean garments in clean water at room temperature; dewatering and drying the first-neutralized jean garments, spraying PP (polypropylene) solution onto the surface of the jean garments, then washing the jean garments in clean water; treating the PP-processed jean garments with hydroxylamine sulfate at 20-50 DEG C for 5-15 minutes, draining the hydroxylamine sulfate, and washing the treated jean garments in clean water at room temperature;processing, dewatering and drying the second-neutralized jean garments. Compared with the prior art, the vulcanized black jean garment washing process is environmentally friendly and safe, and the processed jean garments can be higher in performance.

The invention discloses an IPDI type transparent high-strength polyurethane board and a preparation method thereof, and belongs to the field of polyurethane boards. The IPDI type transparent high-strength polyurethane board and the preparation method thereof can effectively improve optical stability and chemical resistance of a polyurethane board finished product through use of IPDI, so that the transparency is higher, and the hardness is higher. Meanwhile, in the preparation process, under the action of centrifugal force, the extension extreme temperature zone transversely extends, the extension ball rod longitudinally extends, and the introduced liquid nitrogen is matched, so that the extension extreme temperature zone can be in an extremely low temperature state, local sudden temperature reduction of the material in contact with the extension extreme temperature zone can be realized, and the crystallinity of the material A in the preparation process is remarkably reduced; and therefore, the transparency of the polyurethane sheet material finished product can be effectively ensured, the yellowing rate of the polyurethane sheet material finished product can be significantly reduced so as to maintain the high transparency after the long-time use, and the use rate of the polyurethane sheet material can be significantly improved and the waste rate of the resource can be reduced compared with the prior art.

The invention provides a feed additive for reducing the yolk scattering of fresh eggs, which comprises the following components in parts by weight: 20-40 parts of grape seed extract, 20-40 parts of vitamin E, 10-40 parts of folium artemisiae argyi extract, 10-40 parts of beta carotene, 20-40 parts of selenium yeast and 60-80 parts of carrier, wherein the carrier comprises bentonite and rice mill by-product and the weight ratio of the bentonite to the rice mill by-product is 1: 1-3: 1. In each ton of basic feed, the dosage of the feed additive is 200 grams to 600 grams. The feed additive provided by the invention is suitable for all egg-laying poultry, improves the oxidation resistance and antibacterial ability of fresh eggs, can greatly reduce the occurrence rate of yolk scattering of thefresh eggs in the storage period in combination with refrigeration, and the components in the feed additive are all natural plant components or substances allowed to be added into the feed.

The invention discloses a fermentation puffed feed for adult Basa and a preparation method of the fermentation puffed feed. According to the method, nutrient components are reasonably distributed, sothat more nutrient supply can be well provided for growth and development of the adult Basa. Through fermentation degradation before puffing, the Basa can well absorb and utilize the feed, so that theconversion rate of the feed is increased. Bacillus is used, so that digestion and decomposition effects of Basa to the feed can be well promoted, the feed conversion rate is further increased, and besides, the immunocompetence of the Basa and the water quality environment are greatly improved.

The invention provides a fading repair method suitable for yellowing of deacidified paper, which comprises the following steps of 1) atomizing a weak acid solution, uniformly spraying the atomized weak acid solution on a yellowing area on the surface of the deacidified paper, and neutralizing an excessive deacidification agent, and enabling the pH value of the weak acid solution to be 6.0-6.5, and 2) after the paper is naturally dried, treating the surface of the paper by using reductive plasma. According to the method, the excessive deacidification agent on the surface of the paper can be removed under the condition that the deacidification effect of the paper is not influenced, the paper is prevented from seriously yellowing after deacidification, and the yellowing area of the paper after deacidification is subjected to color fading repair, so that the surface of the paper is recovered to the state before deacidification.