A kind of silicone pressure-sensitive adhesive containing boron-modified mq silicone tackifier
A technology of silicone tackifier and silicone pressure-sensitive adhesive, which is used in adhesives, polymer adhesive additives, adhesive additives, etc. question
Active Publication Date: 2019-04-09
SUZHOU SHIHUA NEW MATERIAL TECH
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0005] When the silicone pressure-sensitive adhesive is used to attach silicone rubber products, due to the low surface energy and low polarity of the silicone rubber itself, the above-mentioned hydrogen bonding cannot be realized, which makes the conventional silicone pressure-sensitive adhesive to the organic Insufficient peel force of silicone rubber products
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0076] Example 1: 5 parts by mass of component A1, 30 parts by mass of B2, 45 parts by mass of C1, 2 parts by mass of D1, and 170 parts by mass of toluene were added to a 10-liter reactor. The reaction kettle is equipped with an overhead stirrer, thermometer, and condenser. The mixture was stirred at room temperature for 6 hours to obtain a silicone pressure-sensitive adhesive with a solid content of 32.0% and a viscosity of 20,100 mPa·s. Add 0.1 parts by mass of platinum catalyst (CA28 from Square Silicone Company, platinum content 2000 ppm), mix evenly, apply a certain thickness of wet glue, and cure at 120°C for 2 minutes.
Embodiment 2
[0077] Embodiment 2: The preparation method is the same as that of Embodiment 1, except that component A1 is replaced with component A2.
Embodiment 3
[0078] Embodiment 3: The preparation method is the same as that of Embodiment 1, except that component A1 is replaced with component A3.
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Abstract
The invention discloses a silicone pressure sensitive adhesive containing a boron-modified MQ silicone tackifier, the silicone pressure sensitive adhesive is mainly composed of a mixture of vinyl-group-containing polysiloxane and silicone MQ resin, and contains a certain amount of boron-modified MQ silicone tackifier, the mixture exhibits excellent peeling force, initial tack and viscosity holdingproperty, and has good adhesion properties to silicone rubber products with low surface energy and low polarity after catalytic crosslinking and curing under the condition of heating in the presenceof a platinum catalyst.
Description
technical field [0001] The invention relates to a silicone pressure-sensitive adhesive, in particular to a silicone pressure-sensitive adhesive containing a boron-modified MQ silicone tackifier. Background technique [0002] Silicone pressure-sensitive adhesive and its products have important application value in the fields of electric power, medicine, new energy, etc. It is mainly composed of polysiloxane chain structure [(-Si-O) x ] of raw rubber and containing R 3 SiO 0.5 (M) unit and SiO 2 (Q) A mixture of units of MQ silicone resin. Due to the low surface energy of silicone raw rubber and MQ resin itself, the adhesion properties of silicone pressure-sensitive adhesives to low surface energy substances are better than other types of pressure-sensitive adhesives. [0003] In silicone pressure-sensitive adhesives, the ratio of raw rubber and MQ resin has a great influence on its peeling force and initial adhesion, and MQ resin is mainly used as a structural reinforce...
Claims
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IPC IPC(8): C09J183/04C09J183/07C09J183/08C09J11/08
CPCC08L2205/025C08L2205/035C09J11/08C09J183/04C08L83/04C08L83/08
Inventor 顾正青蔡中胜计建荣
Owner SUZHOU SHIHUA NEW MATERIAL TECH