What chemical raw materials are suitable for papermaking?

I just learn to make paper, you don't need any testing, the chemicals used in papermaking, basically no toxicity, otherwise it is low toxicity, so there is basically no big danger, but some additives are not neutral, there is a certain corrosiveness, it is recommended to contact less, and try not to contact **, eyes, oral mucosa, once in contact can be rinsed with water, serious to seek medical attention. If it must be touched, it is recommended to wet a towel with a weak acid and alkali opposite to the acidity and alkalinity, and then perform the relevant operation. Regarding testing, South China can choose South China University of Technology, the Yangtze River Delta can choose Nanlin, Shandong can choose Shandong Light Industry, Beijing-Tianjin-Tang can choose Beilin, Northeast can choose Donglin, Northwest can choose Shaanxi Science and Technology, other colleges and universities have Jiangnan University, Wuhan University, etc., as well as light institutes in various regions, but testing is not recommended, because the toxicity of these things is quite low.

Cooking, papermaking mainly uses caustic soda, sodium slicate, sodium sulfide, additives are generally anthraquinone, sodium polysulfide, fillers and some additives, as long as you pay attention to these should be fine, do not touch the ** toxic mainly in the bleaching section, the original hypochlorous acid bleaching will produce dioxins, strong carcinogenic small factories use more, but now large factories advocate no chlorine, no element chlorine bleaching, pollution is much smaller. In addition:

1.The raw materials used in papermaking mainly include: wood pulp, straw pulp, imported pulp board and imported waste paper.

2.Pulping raw materials: wheat straw, reeds, fast-growing poplars, bamboo, dragon's beard grass, (that is, plants with high fiber content and long fibers) (cotton: is the main material for making toilet paper. Cotton and linen are also the main materials for special paper. )

3.Main chemical raw materials: caustic soda, sulfide alkali, anthraquinone, (fossil powder, aluminum sulfate as filler), etc.

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The raw materials used in papermaking are mainly fibrous materials, including wood, bamboo, straw, hemp plants, cotton, waste paper, etc. Among them, wood is one of the most commonly used raw materials for papermaking, including pine, spruce, birch, willow, etc. Bamboo is mainly used to produce paper for special purposes, such as toilet paper, facial tissue, etc.

Straw and hemp plants are mostly used to produce coarse packaging paper and industrial paper. High-selling finch cotton is mainly used to produce high-quality writing paper and printing paper. Waste paper is the most environmentally friendly papermaking raw material, through the use of waste paper can reduce the dependence on forest resources, and can effectively reduce the production of papermaking water, electricity, steam and other energy consumption.

The relationship between papermaking and chemical raw materialsPapermaking requires the use of chemical raw materials.

Chemicals used in papermaking refer to chemicals used to process fiber raw materials, pulp and base paper in pulp, papermaking and paper processing.

Polyacrylamide for papermaking is a white granular solid. There is no special odor, and other colors can generally be white or milky white depending on each batch. When polyacrylamide for papermaking is dried, the particles are dispersed and non-sticky.

Industry applications. In the field of papermaking, it is widely used as a retention aid, filter aid, equalizer and other agents. The function of polyacrylamide for papermaking is to improve the quality of paper, improve the dehydration performance of slurry, improve the retention rate of fine fibers and fillers, reduce the consumption of raw materials and environmental pollution.

The effect of its use in papermaking depends on its average molecular weight, ionic properties, ionic strength and the activity of other copolymers.

Nonionic polyacrylamide for papermaking is mainly used to improve the filterability of pulp, increase the strength of dry paper, and improve the retention rate of fibers and fillers; Anionic polyacrylamide copolymer for papermaking is mainly used as a dry and wet enhancer and retaining agent for paper; Cationic polyacrylamide copolymer for papermaking is mainly used for papermaking wastewater treatment and filtration aid, and also has a good effect on improving the retention rate of filler. In addition, polyacrylamide for papermaking is also used in papermaking wastewater treatment and fiber**.