National standard of hydroxypropyl methyl fiber. [Yibo chemical industry]. Construction industry: as the water retaining agent and retarder of cement mortar, it makes the mortar pumping. The decision-making factors of ash residue: 1. The quality of cellulose raw materials (refined cotton): generally, the better the quality of refined cotton, the whiter the color of cellulose, the better the ash content and the better the water retention. 2. Times of washing: there will be some dust and impurities in the raw materials. The more times of washing, the less ash content of the finished product after combustion.
As hydroxypropylmethylcellulose has similar properties with other water-soluble ethers, it can be used as film-forming agent, thickener, emulsifier and stabilizer, abrasion resistance, uniform coating and adhesion in latex paint and water-soluble resin paint compositions, and improve surface tension, stability to acid and alkali, and compatibility with metal pigments. Hydroxypropylmethylcellulose has good effect as thickener of white waterborne polyvinyl acetate coating. The substitution degree of cellulose ether increased, and the resistance to bacteria also increased.
[Yibo chemical] production method 1: cellulose is a natural high molecular compound with abundant reserves in the world. The raw materials for its production are wood, cotton, cotton linter, wheat straw, straw, reed, hemp, mulberry skin, Broussonetia papyrifera skin and bagasse, etc. Due to the lack of forest resources in China, 70 raw materials of cellulose come from non wood resources. In China, the average cellulose content of coniferous and broad-leaved wood is about 43-45, and that of straw is about 40. The industrial production of cellulose is to use sulfite solution or alkali solution to cook plant raw materials, mainly to remove lignin, which are called sulfite method and alkali method respectively. The resulting materials are called sulfite and alkali pulps. After further removal of residual lignin by bleaching, the bleached pulp can be used for papermaking. Further removal of hemicellulose can be used as raw materials for cellulose derivatives. Production method 2: the fiber plant raw material and inorganic acid are mashed into pulp to make α - cellulose. After treatment, the cellulose is partially depolymerized, and then the amorphous part is removed and purified. Production method 3: disperse the selected industrial wood pulp board, and then send it to the reaction kettle added with 1-10 hydrochloric acid (dosage: 5-10) for heating hydrolysis, the temperature is 90-100 ℃, the hydrolysis time is 0.5-2h. After the reaction, it is cooled and sent to the neutralization tank, adjusted to neutral with liquid alkali, the filter cake is dried at 80-100 ℃ after filtration, and then the product is crushed.
The annual output of the company is 6300 tons, and the products are sold all over the country, which are well received by the majority of users. The company originally provided high-quality products for the majority of users. Guarantee quality, reasonable price, abide by the contract, and provide thoughtful technical service. Our tenet is: to survive with quality, to develop with reputation, to serve customers with high-quality products, to meet customers with affordable prices, and to contribute our strength to your career development. We are willing to work hand in hand with the majority of users, strive to cooperate, hot pillow welcome new and old customers to visit and guide.
Dacheng Yibo Chemical Co., Ltd. is a cellulose manufacturer specializing in R & D and production of carboxymethyl cellulose series products. Located in Dacheng County, Hebei Province, it is located at the junction of Beijing, Tianjin and the new area, where the Beijing Kowloon Railway and national highway 106 run through the north and south, with convenient transportation. Our factory mainly produces carboxymethylcellulose, sodium Carboxymethylstarch, pregelatinized starch, polypropylene fiber, wood fiber, dust suppressant and other products. All the cellulose and other products produced by our factory have obtained ISO9000 certification, and have reached the national standard Q / hth01-1998 through national technical appraisal. It has been rated as a provincial cellulose manufacturer with high commitment and good faith, and won the title of 3.15 credit unit.