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A technology of resin adhesive and epoxy resin, applied in the direction of epoxy resin glue, adhesive, adhesive additive, etc., can solve the problems of low strength, flying glue, waste of materials and labor costs, etc.
Inactive Publication Date: 2020-07-07
ZHEJIANG RONGTAI TECH ENTERPRISE
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[0002] Series excitation motor has the characteristics of high speed, small size and light weight, and is used in most electric tool products; series excitation motor is used in electric tools, because it often withstands high speed, high vibration, high load and other harsh work Conditions affect the service life of the motor, which has strict requirements on the motor, especially its high-speed rotor structure; the connection part of the rotor neck commutator and the winding (rotor neck) is the weak link of the entire motor, usually in the industry Fix this part with adhesive to increase its anti-seismic and anti-broken ability, and increase the reliability of the entire motor. The existing encapsulation technology usually has the following problems. Rheological stability is insufficient. In order to control the rheological properties of ex
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Embodiment 1
[0044] Example 1: A single-component rheologically stable high-strength epoxy encapsulating resin adhesive, each component and its corresponding parts by weight are shown in Table 1, and were prepared through the following steps:
[0045] Step 1, adding epoxy resin, toughening agent, 2,6-di-tert-butyl-4-methylphenol and stabilizer in corresponding parts by weight into the stirring tank, and dispersing for 30min at a speed of 300r / min;
[0046] Step 2, put the curing agent and curing accelerator into the stirring tank in step 1, and disperse at a high speed of 1500r / min for 10min;
[0047] Step 3: Put the filler into the stirred tank, disperse for 30 minutes at a speed of 1000r / min, and turn on the vacuum at the same time, the vacuum degree is -0.095MPa;
[0048] Step 4, discharging and packaging.
[0049] Among them, the epoxy resin adopts bisphenol A glycidyl ether with an epoxy equivalent of 180g / eq, the toughening agent adopts hydroxyl-terminated nitrile rubber with a numb...
Embodiment 2-10
[0050] Example 2-10: A one-component rheologically stable high-strength epoxy encapsulating resin adhesive, the difference from Example 1 is that each component and its corresponding parts by weight are shown in Table 1 .
[0051] Each component and parts by weight thereof in table 1 embodiment 1-10
[0052]
[0053]
Embodiment 9
[0054]Example 9: A one-component rheologically stable high-strength epoxy encapsulating resin adhesive, the difference from Example 1 is that the filler uses glass fiber and carbon fiber and the ratio between the two is 1:1 , glass fiber by weight percentage is: aspect ratio (1:1) 10%; aspect ratio (10:1) 60%; aspect ratio (20:1) 30%; carbon fiber by weight percentage is: aspect ratio (1:1) 20%; aspect ratio (10:1) 50%; aspect ratio (20:1) 30%.
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Abstract
The invention discloses a high-strength epoxy encapsulated resin adhesive with single-component diverting and stabilizing functions and a preparation method of the high-strength epoxy encapsulated resin adhesive. According to the technical scheme, the high-strength epoxy encapsulated resin adhesive with the single-component diverting and stabilizing function is prepared from, by weight, 40 to 60 parts of epoxy resin, 0.05 to 0.5 part of 2,6-di-tert-butyl-4-methylphenol, 5 to 15 parts of a toughening agent, 40 to 60 parts of a filling material, 3 to 15 parts of a curing agent, 0.5 to 5 parts ofa curing accelerator, and 0.5 to 1 part of a stabilizing agent; wherein the filler is a composition of fiber powders in different length-to-diameter ratios according to the following ratio: 10-30% oflength-to-diameter ratio being (1-10):1, 40-60% of length-to-diameter ratio being (10-20):1, and 10-30% of length-to-diameter ratio being (20-30):1. According to the present invention, the combination of the fiber powders with different contents and different length-diameter ratios is used, and the rheological property of the encapsulation adhesive is controlled by using the different mutual winding degrees of the fiber powders with different length-diameter ratios in the epoxy resin, such that the prepared product has advantages of rheology stability and high strength.
Description
technical field [0001] The invention relates to the technical field of adhesives, in particular to a one-component rheologically stable high-strength epoxy encapsulating resin adhesive and a preparation method thereof. Background technique [0002] Series excitation motor has the characteristics of high speed, small size and light weight, and is used in most electric tool products; series excitation motor is used in electric tools, because it often withstands high speed, high vibration, high load and other harsh work Conditions affect the service life of the motor, which has strict requirements on the motor, especially its high-speed rotor structure; the connection part of the rotor neck commutator and the winding (rotor neck) is the weak link of the entire motor, usually in the industry Fix this part with adhesive to increase its anti-seismic and anti-broken ability, and increase the reliability of the entire motor. The existing encapsulation technology usually has the foll...
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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