Methacrylate slurry

Abstract

The invention relates to methacrylate slurry which is characterized in that the methacrylate slurry comprises the following components in part by weight: 10-30 parts of modified starch, 1-10 parts of urea starch, 1-15 parts of phospholipid and 10-25 parts of methacrylate. The positive-charge phospholipid contains stearamide (SA), cholesterol derivatives and the like, simultaneously has hydrophilic and hydrophobic groups and can improve the hydrophilcity of surface groups of the methacrylate slurry, effectively improve the moisture absorption and the viscosity of the methacrylate slurry and reduce the use quantity of PVA (Poly Vinyl Alcohol) after being combined with the methacrylate.

Description

technical field [0001] The invention relates to a methyl acrylate size, the viscosity of which does not change much after moisture absorption, and belongs to the field of textile chemistry. Background technique [0002] Methyl acrylate size, polymethyl acrylate and polyacrylamide all have serious re-adhesion phenomenon. One of the reasons is that: the synthetic size contains too many hydrophilic groups, and the strong water absorption makes the dried size The film is easy to absorb moisture and partially dissolve, and has a certain viscosity, so it is easy to have insufficient moisture absorption and re-adhesion on the loom, thereby affecting the weaving effect. Another reason is that the vitrification temperature of the synthetic slurry is too low, and it shows a high elasticity that is easy to deform in the temperature range of use. The property of easy deformation makes the sizing yarns easy to stick to each other, resulting in re-adhesion and affecting the weaving effect...

AI Technical Summary

Problems solved by technology

[0002] Methyl acrylate size, polymethyl acrylate and polyacrylamide all have serious re-adhesion phenomenon. One of the reasons is that: the synthetic size contains too many hydrophilic groups, and the strong water absorption makes the dried size The film is easy to absorb moisture and partially dissolve, and has a certain viscosity, so it is easy to have insufficient moisture absorption and stickiness on the loom, thus affecting the weaving effect

Another reason is that the vitrification temperature of the synthetic slurry is too low, and it shows a high elasticity that is easy to deform in the temperature range of use. The property of easy deformation makes the sizing yarns easy to stick to each other, resulting in re-adhesion and affecting the weaving effect. Now The research direction is to change the above two characteristics through appropriate molecular design, so as to increase the dosage and increase the dosage of modified starch, thereby reducing the dosage of polyvinyl alcohol (PVA).

[0003] Urea starch is a kind of modified hydrophilic starch, which is mainly used for sizing hydrophilic natural fibers, but it has high hygroscopicity, so pay attention to its re-adhesive problem when using it