可降解顆粒包括在用于地下應(yīng)用如鉆井中能進(jìn)行不可逆降解的可降解材料(其通常是可降解聚合物)，此處所使用的術(shù)語(yǔ)一種顆粒或多種顆粒是指具有以下物理形狀的一種或多種微粒薄層(platdet)、刨花(shavings)、纖維、小薄片(flake)、帶狀、棒、條、球體、超環(huán)狀、小球狀、片(tablet)或其它合適形狀的。

Degradable particles include degradable materials (usually degradable polymers) that can be irreversibly degraded in underground applications such as drilling. The term one particle or multiple particles used here refers to one or more thin particle layers, shavings, fibers, flakes, belts, rods, strips, spheres, super rings, small spheres, tablets or other suitable shapes with the following physical shapes.

作為此處所使用的術(shù)語(yǔ)不可逆，意指可降解材料可原位降解(例如在鉆井中)，但降解之后不會(huì)原位(例如在鉆井中)重結(jié)晶或重新固結(jié)。

As the term used herein is irreversible, it means that degradable materials can be degraded in situ (e.g. in drilling), but will not recrystallize or reconsolidate in situ (e.g. in drilling) after degradation.

可降解指可降解材料可以進(jìn)行諸如異相(或本體消耗)和均相(表層消耗沐解降解的兩種相對(duì)極端情形，以及在這兩者之間的任意降解階段。這種降解可以尤其是由化學(xué)或熱反應(yīng)或輻射引發(fā)的反應(yīng)中所產(chǎn)生的。

Degradability refers to the two relatively extreme situations of degradable materials, such as heterogeneous (or bulk consumption) and homogeneous (surface consumption) degradation, and any degradation stage between them. This degradation can be especially caused by chemical or thermal reaction or radiation induced reaction.

作為此處所用術(shù)語(yǔ)一種聚合物或多種聚合物并不暗示特定聚合度，例如，此定義還包括低聚物?？山到饩酆衔锏目山到舛韧ǔＩ俨糠值厝Q于其骨架結(jié)構(gòu)。例如：

As the term is used herein, a polymer or polymers do not imply a specific degree of polymerization, for example, this definition also includes oligomers. The degree of degradability of degradable polymers usually depends at least in part on their skeleton structure. For example:

在骨架中存在的可水解和/或可氧化的鍵通常能產(chǎn)生可以如下所述進(jìn)行降解的材料。這些聚合物的降解速率取決于重復(fù)單元的類型、組成、序列、長(zhǎng)度、分子幾何形狀、分子量、形態(tài)(例如結(jié)晶度、球晶尺寸以及取向度)、親水性、疏水性、表面積和添加劑。

Hydrolyzable and/or oxidable bonds present in the skeleton can generally produce materials that can be degraded as described below. The degradation rate of these polymers depends on the type, composition, sequence, length, molecular geometry, molecular weight, morphology (such as crystallinity, spherulite size, and orientation), hydrophilicity, hydrophobicity, surface area, and additives of the repeating units.

另外，該聚合物所處環(huán)境如溫度、水分的存在、氧氣、微生物、酶、pH等會(huì)影響其如何降解。更多相關(guān)內(nèi)容就來(lái)我們網(wǎng)站http://m.qylxschool.cn咨詢了解吧！

In addition, the environment of the polymer, such as temperature, the presence of water, oxygen, microorganisms, enzymes, pH, etc., will affect how it is degraded. More relevant content will come to our website http://m.qylxschool.cn Ask and understand!