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Amino silicone oil and triblock copolymer silicone oil each have their unique advantages. Here are some of the main advantages of amino silicone oil:
1. Softness and Smoothness: Amino silicone oil has excellent softness and smoothness, which can significantly improve the softness and hand feel of textiles. The higher the amine value, the better the softness and smoothness, but it may also lead to a certain degree of yellowing.
2. Emulsifiability: Amino silicone oil can be easily emulsified with appropriate surfactants into stable, transparent microemulsions, making it widely used in textile treatment.
3. Compatibility: Amino silicone oil is compatible with most organic softeners and other textile auxiliaries, showing good compatibility, and can be combined with other softeners to enhance the finishing effect.
4. Durability to Washing and Dry Cleaning: Textiles treated with amino silicone oil have good durability to washing and dry cleaning, maintaining softness and hand feel.
5. Versatility: Amino silicone oil is not only used for the soft finishing of textiles but also as a polishing agent for machinery and furniture, a paper treatment agent, a coating antifreeze agent, and as an anti-corrosive and anti-rust agent for metals.
6. Improvement of Fabric Properties: Amino silicone oil can enhance the tear strength and wrinkle resistance of fabrics, improving the elasticity of the fabric.
7. Anti-static Performance: Amino silicone oil has certain anti-static properties and advantages such as anti-soiling and anti-re-soiling.
8. Hydrophilicity and Breathability: Some modified amino silicone oils, such as Hongqi amino silicone oil, have excellent hydrophilicity, moisture absorption, and breathability, making the fabric comfortable and relaxed to wear.
9. Stability: Amino silicone oil emulsions have small particle sizes, generally below 0.15μ, so the emulsion is completely thermodynamically stable in a dispersed state, with excellent storage stability, heat resistance, and shear stability.
These advantages make amino silicone oil still hold an important position and application value in the fields of textile soft finishing, leather products, and the electronics industry.
The synthesis route of triblock copolymer silicone oil Depending on the reaction sequence of the three chain segments, there are roughly three synthesis routes for triblock copolymer silicone oil:
(a) Synthesis Route 1 Under the action of an acidic catalyst, hydrogen-containing diblock (full name: tetramethyl dihydrodisiloxane) reacts with D4 monomer (octamethyl cyclotetrasiloxane) to produce a hydrogen-ended polysiloxane (referred to as hydrogen-containing silicone oil); the hydrogen-containing silicone oil is then silylated with allyl polyoxyethylene epoxide ether to form an epoxy-ended silicone oil; subsequently, the epoxy-ended silicone oil is polymerized with an amino polyether compound to produce a triblock copolymer silicone oil with an (AB)n block structure.
(b) Synthesis Route 2 First, an amino end-capper [full name: 1,3-bis(glycidyloxypropyl) (1,1,3,3-tetramethyl) tetrasiloxane] is used with D4 monomer under the catalysis of a base to synthesize an epoxy-ended silicone oil; the amino-ended silicone oil is then polymerized with an amino polyether compound to produce a triblock copolymer silicone oil.
(c) Synthesis Route 3 First, an amino end-capper [full name: 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane] is used with D4 monomer under the catalysis of a base to ring-open polymerize into an amino-ended silicone oil; the amino-ended silicone oil is then polymerized with an epoxy-ended polyether to produce a triblock copolymer silicone oil.
Although the final products of these three routes can all be triblock copolymer silicone oil, there are structural differences. Route 1: Not only does the allyl polyoxyethylene epoxide ether reactant provide the polyether chain segment, but also the polyether amine reactant provides the polyether chain segment, and the two polyether chains can be adjusted according to the product positioning. Route 2: Only the polyether chain segment provided by the polyether amine reactant. Route 3: Only the epoxy-ended polyether reactant provides the polyether chain segment.