相變微膠囊定義

Definition of phase change microcapsules

微膠囊技術(shù)是一種運(yùn)用成膜材料將固體或液體包覆成具有核殼結(jié)構(gòu)微粒的技術(shù),所得微粒稱為微膠囊。

Microcapsule technology is a technology that uses film-forming materials to coat solids or liquids into particles with a core-shell structure. The resulting particles are called microcapsules.

微膠囊的制備技術(shù)起源于20實(shí)際50年代，在70年代中期得到迅猛的發(fā)展，在此時(shí)期出現(xiàn)了微膠囊化產(chǎn)品和工藝。如：藥物、酶、香水、催化劑、染料等產(chǎn)品都應(yīng)用了微膠囊化的封裝形式。

The preparation technology of microcapsules originated in the 1950s and developed rapidly in the mid-1970s. During this period, microencapsulated products and processes appeared. Such as: drugs, enzymes, perfumes, catalysts, dyes and other products are all applied in the form of microencapsulation.

由于相變材料在使用過程中，是通過自身固液轉(zhuǎn)換來吸收或釋放熱量。故在應(yīng)用到紡織品或者電子產(chǎn)品等地方時(shí)，變成液體的相變材料容易流失。所以，采用微膠囊技術(shù)，將相變材料包裹起來，使其可應(yīng)用于紡織品等應(yīng)用領(lǐng)域。

Because the phase change material absorbs or releases heat through its own solid-liquid conversion during use. Therefore, when applied to textiles or electronic products, the phase change material that becomes liquid is easy to lose. Therefore, the use of microcapsule technology to wrap the phase change material so that it can be used in applications such as textiles.

相變微膠囊借鑒了這一技術(shù)，將相變材料分散成球形小顆粒，然后在表面封裝一層性能穩(wěn)定的殼材，最終形成相變微膠囊。將相變材料微膠囊化這一技術(shù)很好的解決了其應(yīng)用中的問題與難點(diǎn)（液體材料流失，腐蝕性，體積變化率等）。相變微膠囊的芯材-相變材料在吸熱時(shí)成液態(tài)，但外殼仍為固體，因此材料的外形仍為固態(tài)顆粒。

Phase change microcapsules learn from this technology, disperse the phase change material into small spherical particles, and then encapsulate a layer of stable shell material on the surface to form phase change microcapsules. The technology of microencapsulation of phase change materials solves the problems and difficulties in its application (liquid material loss, corrosivity, volume change rate, etc.). The core material of the phase change microcapsule-the phase change material becomes a liquid when it absorbs heat, but the outer shell is still solid, so the shape of the material is still solid particles.

相變微膠囊技術(shù)參數(shù)

Partial phase change microcapsule technical parameters

具體的相變微膠囊的參數(shù)（密度、焓值、熱傳導(dǎo)系數(shù)等）根據(jù)不同溫度的相變微膠囊是不一樣的。且，在不同的應(yīng)用領(lǐng)域中，相變微膠囊的使用溫度點(diǎn)也是不同的。具體以實(shí)際需求為準(zhǔn)。

The specific parameters of phase change microcapsules (density, enthalpy, thermal conductivity, etc.) are different according to phase change microcapsules at different temperatures. Moreover, in different application fields, the use temperature points of phase change microcapsules are also different. Specifics are subject to actual needs.

應(yīng)用領(lǐng)域

Application field

1.紡織領(lǐng)域：床上用品、服裝等；

1. Textile field: bedding, clothing, etc.;

2.建筑領(lǐng)域：建筑涂料、水冷空調(diào)等；

2. Construction field: architectural coatings, water-cooled air conditioners, etc.;

3.其他。

3. Others.