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1.1材料學(xué)理論在防腐膠中應(yīng)用
Application of 1.1 material theory in anticorrosion adhesive
1）選擇原材料的原則
1) the principle of selecting raw materials
基料分子要有極性較強(qiáng)的化學(xué)鍵，即分子末端具備有活潑性基團(tuán)，如羥基、羧基、酚基、醚鍵等；基料具有復(fù)合性能（包括化學(xué)性能和物理性能）。
The base material has a strong chemical bond, that is, the end of the molecule has active groups, such as hydroxyl, carboxyl, phenolic, ether bond, etc., and the base material has composite properties (including chemical and physical properties).
2）技術(shù)方法及成效
2) technical methods and effects
首先采用表面物理包覆方法均勻分散納米材料具體應(yīng)用如下：為了充分發(fā)揮納米材料的優(yōu)異性能，首先要確保其能在高分子溶液中有良好的分散性。我們在研究中發(fā)現(xiàn)，可以借助穩(wěn)定的分散助劑，通過高速攪拌使高分子吸附在納米粒子表面上，從而減少范德華力，而且產(chǎn)生一種新的空間位阻斥力，對粒子間的各種締合力起到減弱或屏蔽作用，粒子間再發(fā)生團(tuán)聚將十分困難，最終得到穩(wěn)定的分散效果。其次提高防腐膠的機(jī)械性能（如圖1所示）添加一定粒徑一定量n-SiO2，復(fù)旦大學(xué)武利民等在《n-SiO2在高固體分聚氨酯涂料中的應(yīng)用》[1]一文中介紹了納米n-SiO2時(shí)，對涂層拉伸強(qiáng)度和斷裂伸長率的影響。再次提高防腐膠儲(chǔ)存性與施工性。再有需要提高抗老化性能。n- SiO2具有極強(qiáng)的紫外反射能力，對波長400nm以內(nèi)的紫外反射率達(dá)70%以上，因此是一種好的抗老化的添加劑；n- SiO2對紫外線的屏蔽是以吸收和散射為主，經(jīng)紫外分光廣度儀檢測，它對200nm以上的紫外光線的屏蔽率高達(dá)99.99%，因此我們可以填充一定量的納米材料到防腐膠中提高防腐膠的抗老化能力，以便適應(yīng)海洋重防腐的要求。
Firstly, the surface physics coating method is used to evenly disperse nano materials. The specific applications are as follows: in order to give full play to the excellent properties of nanomaterials, it is necessary to ensure that it has good dispersion in polymer solution. In our study we found that with dispersant stability, through high speed stirring to polymer adsorption on the surface of nanoparticles, thereby reducing the Fan Dehua force, and create a kind of new steric repulsion to weaken or shielding effect to the various association between particles together, then agglomerate particles will be very difficult, and ultimately to get stable dispersion effect. Secondly, improve the mechanical properties of anticorrosive glue (as shown in Figure 1) to add a certain particle size of a certain amount of n-SiO2 and Wu Limin of Fudan University in "n-SiO2 in high solid polyurethane coatings application" [1] is introduced in this paper, nano n-SiO2, coating effect on the tensile strength and elongation at break. Improve the storage and construction of anticorrosive adhesive again. There is a need to improve aging resistance. N- SiO2 has a strong ability of UV reflection, UV reflectance on the wavelength less than 400nm is more than 70%, so it is an excellent anti-aging additives; shielding n- SiO2 on ultraviolet by absorption and scattering, the UV shielding of breadth instrument, it more than 200nm UV light rate as high as 99.99%, improve the anti-aging ability of anticorrosive glue so we can be filled with a certain amount of nano materials to the anticorrosive glue, so as to adapt to the requirements of heavy duty anticorrosion.