Preparation method of water-borne PU adhesive for zero DMF immersion gloves

Abstract

The invention discloses a preparation method of a water-borne PU adhesive for zero DMF immersion gloves. The water-borne PU adhesive is prepared from the following components in percentage by weight:70-80% of water-borne polyurethane dispersion bodies, 2-5% of a wear-resistant agent, 1-5% of a wax emulsion, 0.5-3% of a pore opener, 0.1-1% of a wetting agent, 2-3% of an adhesive, 1-4% of a foamingagent, 1-4% of a foam stabilizer, 0.4-0.8% of a synthesis thickener, and 10-20% of deionized water. The preparation method includes the following steps that S1, a certain amount of the aqueous polyurethane dispersion bodies is taken and placed in a mixing tank; and S2, a mixer is arranged outside a stainless steel mixing cylinder, a drive end of the mixer extends into the stainless steel mixing cylinder, and mixes at a rotating speed of 500-1100 r / min. According to the preparation method, a PU adhesive does not use DFM, and is safe and environmental-friendly; by adding the wear-resistant agent, the pore opener, the wax emulsion, and the like, the softness and hand feeling of the gloves made by the PU adhesive are improved; and meanwhile, the hardness and wear resistance of the gloves areimproved, and the gloves are soft and wearable.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a preparation method of water-based PU glue for zero-DMF dipped gloves. Background technique [0002] PU coated gloves completely cover the palm part with specially treated polyurethane, which can provide good anti-skid performance and prevent hand sweat and particle pollution from the palm of the human body. Generally, the glove core is dipped and dried with PU glue on the glove mold. forming. In the traditional production method of PU coated gloves, it is necessary to use dimethylformamide (DMF) solvent. DMF is N,N-dimethylformamide, which belongs to the second class of carcinogens and has high toxicity. It is harmful to the skin and liver. Function is damaged, flammable during use, such as DMF residues in gloves, which can be absorbed through the skin and respiratory tract after wearing, causing damage to liver function, affecting reproductive function, and adver...

AI Technical Summary

Problems solved by technology

In the traditional production method of PU coated gloves, it is necessary to use dimethylformamide (DMF) solvent. DMF is N,N-dimethylformamide, which belongs to the second class of carcinogens and has high toxicity. It is harmful to the skin and liver. Function is damaged, flammable during use, such as DMF residues in gloves, which can be absorbed through the skin and respiratory tract after wearing, causing damage to liver function, affecting reproductive function, and adversely affecting the health of workers. Moreover, DMF The manufacturing process of the active solvent is complicated, and the water demand and energy consumption are very large, resulting in a waste of resources and not conducive to environmental protection. Therefore, the European Union has been committed to banning practical DMF, but there is no DMF-free gloves on the market