Water-soluble polyurethane latex adhesive with porous network formed by 'core-shell' structure
A water-based polyurethane and adhesive technology, which is applied in the direction of graft polymer adhesives, adhesives, adhesive types, etc., can solve the problem of PU emulsion stability, self-thickening, solid content, and insufficient gloss retention. , toughness, wear resistance, weather resistance, water resistance, poor chemical resistance, etc.
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Embodiment 1
[0020] Example 1: Fabric waterproof and moisture-permeable finishing agent: water-based PU / PA coating agent can be used in finishing processes such as dry coating and transfer printing, which can obtain water resistance and good heavyness; it feels plump and smooth, and has Breathable finishing effect. Prescription: 1. Front waterproof finishing: sumiflouil EM-11 20g / L2. Coating finishing: PU / PA 100 parts
[0021] Mirox AM+PVP 3 copies
[0022] Teflon289 5 parts
[0023] 2 parts of MD resin 3. Finishing: sumiflouil EM-11 30g / L
[0024] Water repellent 40g / L
[0025] Catalyst HA 20g / L process: (dry coating)
[0026] Pre-waterproof finishing (one soaking and one rolling), the temperature is 100-120 ℃,
[0027] Coating, drying (100-120°C), post-waterproof finishing (two dipping and two rolling), drying (100-120°C), baking (150°C, 30min) process: (transfer method)
[0028] Coating surface layer of release paper, drying (1mm, 100-120°C...
Embodiment 2
[0029] Embodiment 2: the microcapsule coating process of solid propellant filler: C1-20 / (PU / PA)=95-99% / 5-1%, interface cross-linking agent, coupling agent, vacuum spray drying (T= 50-110℃, vacuum degree: 1.2-5.3×10 4 Pa), the obtained wall thickness is 0.1um-3um, apparent density: 1.29 / cm 3 , powder with good fluidity, easy for casting and processing.
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