羟丙基甲基纤维素(HPMC)是以天然高分子材料为原料,经一系列化学加工而制得的非离子型纤维素醚。它几乎包含甲基纤维素(MC)的所有性能,是您生产优质建材的**助剂。为满足绿色环保的需要,我厂为建材行业特别研制生产富强牌产品,具有保水性能高、分散性好、细度好、和易性好、溶解方便等特点;适用于干粉砂浆建材、内外墙耐水腻子粉(膏)、粘结剂、填缝剂、界面剂、水性涂料、自流平剂等新型建材。在生产建材中,纤维素醚是一种不可缺少的添加剂。添加HPMC之后,可改善如下性能:
一、 Hydroxypropyl methylcellulose(HPMC) is a type of nonionic cellulose ether madefromnaturalhighmolecularmaterialsthrough a series of chemical processes. With almost all properties of methyl cellulose (MC), it is the auxiliary agent of first choice in theproductionoftop-qualityconstructionmaterials. Tosatisfy the requirement of environment protection, Tasong brand product is developed and produced particularly for the construction material industry.Withsuchfavorablefeatures ashigh waterretention, good dispersancy, high degree of fineness, nice placeability and convenience to disso*e, it is applicable to the production ofinnovativeconstructionmaterials likedry-powdermortar,waterproof putty powder (paste) for indoor and outdoor walls, binding agent, gap filler, interface finishing agent, water paint, self-levelingagent, etc.In theproduction ofconstructionmaterials,cellulose ether is an indispensable additive. After HPMC is added, the following properties can be enhanced.
A、 保水性——增强保水性,改善水泥、石膏建材过快干燥和水合不够引起硬化不良、开裂等现象。
Water Retention: The water retention will be enhanced, which is helpful with such problems as cement or gypsum construction material drying too fast and poor hardeningorcrackingduetoinsufficienthydration.
B、 作业性——增加了砂浆有可塑性,改善施工馒涂的工业性,提高工作效率;
Operationality: It can enhance the plasticity of mortar and improve the coating efficiency in construction projects.
C、 粘结性——由于砂浆可塑性提高,使它能更好粘结基材及被粘结物;
Adhesivity: It can make mortar attach to base material better since the plasticity of mortar is enhanced.
D、 抗滑移——由于它的增稠作用,所以能防止施工时砂浆及被粘结物滑移现象的出现。
Slip Resistance: It can prevent slipping problem between mortar and the base material in construction project as a result of its thickening effect.
二、分子组成与结构式:
II.Molecular Composition and Structural Formula
HPMC (Hydroxypropyl Methy 1 Cellulose)
式中n为聚合度,R为一H,一CH3或一CH2CHOH CH s
Where n represents polymerisation degree, R is -H,-CH3 or CH2CHOHCH3.
三、在建筑材料的配方中,主要适用于:
It is applicable to the production of following products in the recipe of construction materials.
1) 耐水腻子粉
Waterproof putty powder
2) 水泥砂浆
Cement sand mortar
3) 水泥基砖、瓦与基砖的粘结;
Cement base brick/tile and the bonding between tile and base brick)
4) 石膏板基的灰泥;
Plaster for gypsum board base,
5) 水泥基的结构灰泥。
Cement-based structural plaster.
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