[0094] Example-5 Application Test
[0095] Test the anti-phase separation effect of the additives in the following formula
[0096]
[0097]
[0098] The commercially available product is W-972 from BYK, Germany, which is used to prevent phase separation.
[0099] Add additives to the resin, mix thoroughly for 1 min at 1000 rpm, add low shrinkage components, and stir at 1000 rpm for 2 min. Pour the paste into a 200ml beaker immediately and observe the phase separation of the system.
[0100]
[0101] Among them, "--" means severe phase separation.
[0102] In the above embodiments, the effect of the present invention in preventing phase separation is better than or equivalent to that of commercially available products.
[0103] Example-6 Application Test
[0104] Test the performance of invented products in high-performance SMC formulations
[0105] Step 1 Test the effect of preventing phase separation in the following resin paste formulation
[0106]
[0107]
[0108] First mix the resin and the low shrinkage agent, stir the dispersant fully, then add aluminum hydroxide, color paste and zinc stearate, disperse for 5 minutes at 3000 rpm, finally add phase separation aid, and disperse for 1 min at 1500 rpm.
[0109] Recipe number A-3-0 A-3-1 A-3-2 A-3-3 A-3-4 Dispersant do not add EXP-1 EXP-2 EXP-3 EXP-2 Viscosity CPS 16000 14000 138000 14100 13900 24 hours -- No phase separation No phase separation No phase separation No phase separation 48 hours -- No phase separation No phase separation No phase separation No phase separation 72 hours -- Slight phase separation Slight phase separation Slight phase separation Slight phase separation
[0110] Among them, "--" means severe phase separation.
[0111] In the test formulation, the product of the present invention has an excellent effect of preventing phase separation.
[0112] Step 2 Test the mechanical properties of composite materials
[0113] Mix the paste prepared in step 1 with the other components of the following formula, thicken (48 hours), cure at high temperature, demold into pieces, and measure the mechanical properties of the obtained pieces.
[0114]
[0115] The paste without phase separation aid cannot be processed; the paste with phase separation aid can be processed smoothly and exhibits excellent wettability of glass fiber. The obtained product is tested on three samples for mechanical properties, and the average The values are as follows:
[0116]
[0117]
[0118] Among them, "--" means that it cannot be processed.
[0119] The mechanical properties show that the auxiliary agent of the present invention can significantly increase the mechanical strength of the finished product by about 10% through the curing stage and the cross-linking of the unsaturated polyester system.
[0120] The product of the present invention can fully disperse and stabilize the low-shrinkage component in the composite material system through the wetting and dispersing property of its structure, thereby greatly reducing the rate of phase separation, and at the same time it is comparable to traditional commercial products or existing inventions. Compared with the product of the present invention, the unsaturated double bond and the unsaturated resin in the structure of the product are cross-linked during the curing stage, and the fiber can be better stabilized and cured in the finished product, thereby improving the product performance and providing a composite material formula An innovative multifunctional solution.
