4results about How to "Fully swollen" patented technology

The invention relates to the technical field of adhesives, in particular to a multifunctional sanitary material hot-melt pressure-sensitive adhesive and a preparation method thereof. The multifunctional sanitary material hot-melt pressure-sensitive adhesive is prepared from the following raw materials in parts by mass: 15 to 16 parts of SBS (Styrene Butadiene Styrene), 4 to 5 parts of SIS (Styrene Isoprene Styrene), 50 to 60 parts of petroleum resin and 20 to 30 parts of softening agent. The hot-melt pressure-sensitive adhesive prepared by the preparation method disclosed by the invention has the strong adhesive property of a structural adhesive and the excellent creep resistance of a rubber band adhesive, can meet the dual requirements of adhesion between sanitary material layers and rubber band fixation, and can improve the performance stability and market competitiveness of a product after being used.

This utility model discloses a system for preparing lyocell fiber spinning dope by modifying wood pulp, including an enzymatic purification kettle, a first washing kettle, a bleaching and impurity removal kettle, a second washing kettle, a pulverizer, a pulper, and a thin-film evaporator. The enzymatic purification kettle is connected to a first connecting pipe, which is equipped with a first delivery pump and a first press. The first press is connected to the first washing kettle, which is connected to a second connecting pipe. The second connecting pipe is equipped with a second delivery pump and a second press, which is connected to the bleaching and impurity removal kettle. The bleaching and impurity removal kettle is connected to a third connecting pipe, which is equipped with a third delivery pump and a third press. The third press is connected to the second washing kettle, which is connected to a fourth connecting pipe. The fourth connecting pipe is equipped with a fourth delivery pump and a fourth press. The fourth press, pulverizer, and pulper are connected in sequence. The pulper is connected to a fifth connecting pipe, which is connected to the thin-film evaporator via a screw delivery pump.

This invention discloses a high-toughness asphalt mixture modified from waste plastics and rubber, and its application. It relates to the field of asphalt mixture preparation technology, comprising 80-150 parts of base asphalt, 2-8 parts of modified waste plastic particles, 4-12 parts of activated waste tire rubber powder, 100-150 parts of aggregate, and 30-40 parts of mineral filler. This invention adds silane-coupled waste plastic particles and microwave-activated waste tire rubber powder to the asphalt mixture, limiting the mass ratio of modified waste plastic particles to activated waste tire rubber powder to 1:(1.5~2). The aggregate and mineral filler fully fill the gaps, synergistically solving the defects of high low-temperature brittleness and insufficient high-temperature performance in asphalt. This results in a mixture with excellent high-temperature stability and low-temperature crack resistance, and significantly improved performance reproducibility.

The invention discloses an SBS modified asphalt field processing method, relates to the technical field of asphalt processing, and solves the problems of poor anti-aging quality and poor plasticity of asphalt processed by an existing SBS modified asphalt field processing method.The SBS modified asphalt field processing method comprises the steps that matrix asphalt is transferred into a rapid heating tank to be heated to a molten state; the preparation method comprises the following steps: adding a plasticizer polyurethane, transferring into a working stirring tank, adding an SBS modifier and tackifier rubber powder, heating and stirring to fully swell the modifier and fully mix the tackifier with matrix asphalt to obtain a mixture A, shearing the mixture A by adopting high-speed shearing equipment, adding an anti-aging agent bakelite into the mixture A, and uniformly stirring to obtain a mixture B; the temperature is stably controlled to be 182-186 DEG C in the shearing process, the mixture is transferred into a development tank after shearing is completed, constant-temperature development is conducted for 6 h, preparation of the on-site modified asphalt is completed, and when the shearing temperature is 185 DEG C, the shearing rate is 4000 r / min and the shearing time is 40 min, the mixing shearing quality is optimal.