可降解塑料顆粒主要由天然聚合物（如淀粉、纖維素、甲殼素）或農(nóng)副產(chǎn)品經(jīng)微生物發(fā)酵或合成可生物降解的聚合物制成，如熱塑性淀粉塑料、脂肪族聚酯、聚乳酸、淀粉/聚乙烯醇等.屬于這類塑料，主要用于制造可降解塑料。可降解塑料是指性能能滿足使用要求的一類產(chǎn)品，在儲存期間性能保持不變，但使用后在自然條件下可降解為對環(huán)境無害的物質(zhì)的塑料。下面下介紹可降解塑料顆粒的相關(guān)知識。

Degradable plastic particles are mainly made of natural polymers (such as starch, cellulose, chitin) or agricultural and sideline products through microbial fermentation or synthesis of biodegradable polymers, such as thermoplastic starch plastics, aliphatic polyester, polylactic acid, starch / polyvinyl alcohol, etc It belongs to this kind of plastics and is mainly used to manufacture degradable plastics. Degradable plastic refers to a kind of product whose performance can meet the use requirements. Its performance remains unchanged during storage, but it can be degraded into environmentally friendly substances under natural conditions after use. The following describes the relevant knowledge of degradable plastic particles.

可降解塑料顆粒配方分析：

Formulation analysis of degradable plastic particles:

光降解塑料、生物降解塑料、輕質(zhì)、氧化生物降解塑料、二氧化碳基生物降解塑料、熱塑性淀粉樹脂降解塑料。

Photodegradable plastics, biodegradable plastics, light, oxidative biodegradable plastics, carbon dioxide based biodegradable plastics, thermoplastic starch resin degradable plastics.

可降解顆粒廠家提醒，降解過程主要涉及生物降解、光降解和化學(xué)降解，這三種主要降解過程相互之間具有協(xié)同、協(xié)同和連貫的作用。例如，光降解和氧化物降解往往同時(shí)發(fā)生，相互促進(jìn)；在光降解過程之后更有可能發(fā)生生物降解。

Manufacturers of degradable particles remind that the degradation process mainly involves biodegradation, photodegradation and chemical degradation, and these three main degradation processes have synergistic, synergistic and coherent effects on each other. For example, photodegradation and oxide degradation often occur simultaneously and promote each other; Biodegradation is more likely to occur after the photodegradation process.

檢測范圍：包裝制品、塑料制品（可降解包裝制品：購物袋、垃圾袋、包裝膜、手套等薄膜制品）、一次性可降解餐具、薄膜及片材（包裝薄膜制品：購物袋、垃圾袋、包裝薄膜、手套等）

Test scope: packaging products, plastic products (degradable packaging products: shopping bags, garbage bags, packaging films, gloves and other film products), disposable degradable tableware, films and sheets (packaging film products: shopping bags, garbage bags, packaging films, gloves, etc.)

測試項(xiàng)目：降解性、生物降解性、生物降解率、生物降解及崩解劑崩解能力評價(jià)、好氧堆肥試驗(yàn)生物降解率

Test items: degradability, biodegradability, biodegradation rate, evaluation of biodegradation and disintegrating agent disintegration ability, biodegradation rate of aerobic compost test

檢測標(biāo)準(zhǔn)：

Test standard:

GB/T20197可降解塑料的定義、分類、標(biāo)志和降解性能要求

Gb/t20197 definition, classification, marking and degradability requirements of degradable plastics

GBT16422.2塑料實(shí)驗(yàn)室光照試驗(yàn)方法第2部分氙弧燈

Gbt16422.2 plastics laboratory illumination test methods Part 2 xenon arc lamp

GBT7141塑料熱老化試驗(yàn)方法

Gbt7141 test method for thermal aging of plastics

GB/T38082可降解塑料購物袋

Gb/t38082 degradable plastic shopping bags

GB/T19277.1(ISO14855-1:2012)受控堆肥條件下材料好氧生物降解和崩解能力的測定釋放二氧化碳的測定方法第1部分通用方法

Gb/t19277.1 (iso14855-1:2012) determination of aerobic biodegradation and disintegration of materials under controlled composting conditions determination of carbon dioxide emission part 1 general method

EN13432包裝。通過合成和生物降解評估包裝可回收性的要求

EN13432 packaging. Requirements for evaluating packaging recyclability through synthesis and biodegradation

ASTMD5338堆肥條件下塑料材料有氧生物降解的測試方法

Astmd5338 test method for aerobic biodegradation of plastic materials under composting conditions

釋放的二氧化碳的量或測定方法

Amount or measurement method of carbon dioxide released

QB/T2671可生物降解塑料片材定義、標(biāo)志及生物降解性能要求

Qb/t2671 definition, marking and biodegradability requirements for biodegradable plastic sheets

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