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    解读环氧地坪在建筑中的重要性和延伸

    2019-01-31 22:09:04 无锡盛发地坪科技有限公司 阅读

    胺类固化剂是环氧地坪涂料的主要固化剂,这类固化剂主要有脂肪胺、脂肪胺加成物、脂环胺、脂环胺加成物、聚酰胺、聚酰胺加成物、曼尼其碱等。各种固化剂中,脂肪胺与环氧树脂反应迅速,放热量大,涂膜交联密度高,抗化学府性能很好。脂肪胺加成物在刺激性、泛白、与环氧树脂相容性等方面有较大改善,但最终涂膜的交联结构与脂肪胺相似,玻璃化温度高,脆性大,主要用于高抗化学品耐溶剂型涂料。

    Amine curing agents are the main curing agents for epoxy floor coatings. These curing agents mainly include aliphatic amine, aliphatic amine adduct, aliphatic amine adduct, polyamide, polyamide adduct, Mannich base and so on. Among all kinds of curing agents, aliphatic amine reacts with epoxy resin rapidly, releases heat, has high crosslinking density and good chemical resistance. Aliphatic amine adducts have been greatly improved in irritation, whitening and compatibility with epoxy resins. However, the cross-linking structure of the final coating is similar to that of aliphatic amine. It has high glass transition temperature and brittleness, and is mainly used in solvent-resistant coatings with high chemical resistance. 脂环胺及其加成物的许多性能较脂肪胺及其加成物有较大提高,如色浅、流平性好、光泽高、不泛白、不需诱导期,其玻璃化温度仍较高,主要用作无溶剂环氧地面涂料的固化剂。

    Many properties of alicyclic amines and their adducts are better than those of aliphatic amines and their adducts, such as light color, good leveling, high gloss, no whitening and no induction period. Their glass transition temperature is still high, and they are mainly used as solventless curing agents for epoxy floor coatings.


    聚酰胺固化剂综合性能优良,分子内长链烃具有很好的内增塑作用,使涂膜柔软、耐冲击,酰胺键提供了更大的粘附性、润湿性、剥离强度和对潮湿表面的容忍度。耐化学府性较其他胺固化剂下降,但仍保持很高的韧性,广泛用作溶剂型环氧地面涂料的固化剂。

    Polyamide curing agent has excellent comprehensive properties. Long chain hydrocarbons in molecule have good plasticizing effect, which makes the film soft and impact resistant. The amide bond provides greater adhesion, wettability, peeling strength and tolerance to wet surface. Chemical resistance decreases compared with other amine curing agents, but still maintains high toughness. It is widely used as curing agent for solvent-based epoxy floor coatings.


    聚酰胺与环氧的混溶性不好,施工前没有熟化仍有发白出油现象,而聚酰胺加成物与环氧树脂相容性好,游离胺含量低,较标准聚酰胺在不良条件下易固化而得到不变黄、无白霜的涂膜,因而目前大多数环氧地面涂料都选用聚酰胺加成物作为地面涂料固化剂。

    The miscibility of polyamide and epoxy is not good, whitening and oiling still occur before construction, while polyamide adduct has good compatibility with epoxy resin, low content of free amine, which is easier to cure than standard polyamide under adverse conditions and can obtain yellow and frost-free coatings. So at present, most epoxy floor coatings use polyamide adduct as curing agent for floor coatings.


    曼尼其碱又叫酚醛胺,其特点是分子中含有酚羟基,能促进固化,常用于低温、潮湿、水下固化涂料。由于分子中苯环的刚性使涂膜脆性较大,故单独作为环氧地坪涂料的固化剂应用不多,多用作中间层胶泥、砂浆的固化剂。

    Mannich base, also known as phenolic amine, is characterized by the presence of phenolic hydroxyl groups in the molecule, which can promote curing. It is often used in low temperature, humidity and underwater curing coatings. Because the rigidity of benzene ring in molecule makes the film brittle, it is seldom used as solidifying agent of floor coating alone, and mostly used as solidifying agent of middle layer cement and mortar.


    稀释剂即能溶解树脂的有机溶剂。主要作用是降低树脂胶液黏度,同时也有利于把树脂固化过程中放出的热量传递出来,可适当延长胶液的使用期。稀释剂分非活性稀释剂和活性稀释剂两类。

    Dilutants are organic solvents that dissolve resins. The main function is to reduce the viscosity of the resin glue, but also conducive to the heat release from the resin curing process, which can properly prolong the service life of the glue. Dilutants can be divided into two categories: inactive diluents and active diluents.


    1)非活性稀释剂本身不参与固化反应,仅达到物理混合和减低黏度的目的。一般加入量为树脂重量的5%一15%,在树脂固化时,会有部分逸出,从而增加树脂的收缩率,降低粘结力、机械强度及热变形温度,严重时甚至会产生气孔。溶剂型环氧地面涂料使用时应特别注意。

    1) The inactive diluent itself does not participate in the curing reaction, only achieves the purpose of physical mixing and viscosity reduction. Generally, the amount of resin added is 5% to 15% of the weight of the resin. When the resin is cured, part of the resin will escape, which will increase the shrinkage of the resin, reduce the bonding force, mechanical strength and thermal deformation temperature, and even produce stomata in serious cases. Special attention should be paid to the use of solvent-based epoxy floor coatings.


    2)活性稀释剂的种类及使用。活性稀释剂具有环氧基,能参与环氧树脂的环氧固化反应,所以并无逸出之弊。

    2) Types and use of active diluents. Active diluent has epoxy group and can participate in epoxy curing reaction of epoxy resin, so it has no evasive disadvantages.


    对固化后树脂无太多的影响,同时还往往起着增韧作用,在配方中增韧剂的用量可以减少或不用。但加入活性稀释剂时固化剂应相应增加用量。

    It has little effect on the cured resin, but also plays a toughening role. The amount of toughening agent in the formulation can be reduced or not used. However, when active diluent is added, the amount of curing agent should be increased accordingly.


    洁净耐磨地面涂料一次施工成膜厚度达0.8-3.0㎜,为防止非活性溶剂挥发而产生涂抹膜陷,多选用了活性稀释剂,制成无(挥发)溶剂型自流平涂料,同时也符合环保绿色涂料要求,进一步改善了施工条件。

    The film thickness of clean and wear-resistant floor coatings is 0.8-3.0 in one application. In order to prevent the film depression caused by volatilization of non-active solvents, active diluents are mostly selected to prepare solvent-free (volatile) self-leveling coatings. At the same time, it meets the requirements of environmental protection green coatings and further improves the construction conditions.


    稀释剂用量过多,对性能也有一定的影响。由于稀释剂本身是短链分子,碳链比环氧树脂短,因而阻碍了链的形成,影响了成膜物的主要性能。

    Excessive dosage of diluent also has a certain effect on the performance. As the diluent itself is a short chain molecule, the carbon chain is shorter than that of epoxy resin, which hinders the formation of the chain and affects the main properties of the film-forming material.


    (4)颜、填料

    (4) Pigments and fillers


    环氧地坪树脂耐磨地面涂料属于厚浆型涂料,着色颜料的用量可比普通颜料少。另一方面,环氧地面涂料表干时间长,使用有机颜料易产生浮色、发花等问题,且有机颜料的耐化学性能有局限性,因而大多选用无机颜料,如钻白粉、氧化铬绿和氧化铁系的颜料等。

    Epoxy floor resin wear-resistant floor coatings belong to thick paste coatings, the amount of coloring pigments can be less than ordinary pigments. On the other hand, the surface drying time of epoxy floor coatings is long, the use of organic pigments is easy to produce float, blossom and other problems, and the chemical resistance of organic pigments has limitations, so most of the inorganic pigments are used, such as drill white powder, chromium oxide green and iron oxide pigments.



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