Reinforcing agent for papermaking and preparation method thereof
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A technology of reinforcing agent and monomer, which is used in the field of synthetic polymer reinforcing materials to achieve the effect of stable reaction and simple process
Active Publication Date: 2012-11-14
湖北广发纸业有限公司
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[0004] In order to solve the defects of the existing strengthening agents, the purpose of the present invention is to provide a novel amphoteric papermaking strengthening agent with self-crosslinking performance. During the application process, the
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experiment example 1
[0030] The application effect was evaluated in a paper mill in Shandong, and compared with RS-218 enhanced starch (enhancer 1#).
[0031] Dilute the strengthening agent formulated in Examples 1 to 5 by 25 times with water on-line, and add it in an amount of 10kg / t paper, add it to the inlet of the pulp pump at the outlet of the stock tank, and enter the paper machine flow delivery system.
[0032] According to GB / T 13024-2003 "Container Board", the folding endurance, bursting strength and ring compressive strength of the cardboard are measured, and the quantitative value of the cardboard during the test machine is 200g / m 2 . The results are shown in Table 1.
[0033] Table 1
[0034]
[0035]
[0036] As can be seen from the results in Table 1: using the reinforcing agent prepared in Examples 1 to 7 of the present invention, compared with the blank sample, the three important indexes of the boxboard have been greatly improved, and compared with the RS-218 reinforced st...
experiment example 2
[0038] The application effect was evaluated in a paper mill in Shandong, and compared with the strengthening agent model KJP-15 (manufactured by Yonggang Weifang Technology Co., Ltd., referred to as strengthening agent 2# here).
[0039] Dilute the strengthening agent formulated in Examples 1 to 5 by 25 times with water online, and add it to the outlet of the pulp tank and the inlet of the pulp pump in an amount of 10 kg / t paper, and then enter the paper machine flow delivery system.
[0040] According to GB / T 13023-2008 "Corrugated Core (Original) Paper", the ring crush strength, flat crush index and longitudinal fracture length of the paper are measured, and the quantitative value during the test machine is 110g / m 2 . The results are shown in Table 2.
[0041] Table 2
[0042]
[0043] As can be seen from the results in Table 2: using the strengthening agent prepared in Examples 1 to 5 of the present invention, compared with the blank sample, the three important indicat...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
The invention relates to a reinforcing agent for papermaking and a preparation method thereof. The reinforcing agent provided by the invention comprises the following raw materials expressed in mass parts: 15 to 16 parts of acrylamide monomers, 1.4 to 2 parts of N-methylolacrylamide, 1.4 to 2.4 parts of acrylic acid, itaconic acid and acrylate monomers, 1.6 to 2.6 parts of cationic monomers, 75 to 80 parts of water and a redox initiation system accounting for 0.1 to 0.5% of the total amount of the monomers. According to the invention, since N-methylolacrylamide, acrylic acid, itaconic acid and the acrylate monomers are added into the reinforcing agent for papermaking, the reinforcing agent is capable of carrying out self-crosslinking to form a net structure, acting forces among the reinforcing agent and between the reinforcing agent and cellulose are improved, and finally, action effects of the reinforcing agent are enhanced; meanwhile, introduction of the cationic monomers into polymer chains enables the reinforcing agent to have good resistance to interference by hetero-ions and improved adaptability.
Description
technical field [0001] The invention relates to a synthetic polymer reinforcing material, in particular to a novel papermaking reinforcing agent and a preparation method thereof. technical background [0002] The dry strength of paper is one of the structural properties of paper. The dry strength of paper is mainly obtained with the formation of fiber network and bonding between fibers after drying. In fact, the strength of paper mainly depends on the strength of individual fibers and the degree of bonding between fibers, the number, the distribution of fiber bonds, and so on. The strength of the fiber network can be improved by mechanical beating and refining, because the number of fine fibers increases after increasing the degree of beating, thereby increasing the formation of bonds between fibers. In the binding force between fibers, although there are covalent bonds, ionic bonds and van der Waals forces, hydrogen bonds play a key role. Unlike other bonds, hydrogen bon...
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