生物降解材料擠出造粒的外觀如何

你知道生物降解材料擠出（chū）造粒的外觀如何嗎？實（shí）際上要了解（jiě）這（zhè）個問題（tí），我們可以從3個方麵來進行講解：

Do you know the appearance of extrusion granulation of biodegradable materials? In fact, to understand this problem, we can explain it from three aspects:

1.生物降解（jiě）顆粒（lì）兩端的有孔問題：

1. Porosity at both ends of biodegradable particles:

兩端都有孔：說明料裏（lǐ）含的低分子（zǐ）物（wù）質戒水份較多，真空排氣沒抽幹淨戒原料含的低分子戒水成分較多。

There are holes at both ends: it indicates that the material contains more low molecular weight water repellent substances, and the vacuum exhaust is not clean. The material contains more low molecular weight water repellent substances.

隻有一端有孔：說（shuō）明料（liào）裏含的低分子物質戒水份較少（shǎo），沒（méi）有（yǒu）嚴格要求時（shí）可以（yǐ）接受。

Only one end has holes: it indicates that the low molecular substances in the material contain less water repellent, which can be accepted without strict requirements.

解決：前處理（幹（gàn）燥、密封等（děng））；加強（qiáng）真空排氣（同時要考慮到螺杆設計）；提高水槽溫度。

Solution: pretreatment (drying, sealing, etc.); Strengthen the vacuum exhaust (at the same time, consider the screw design); Raise the temperature of the sink.

2.生物降解顆粒發泡：

2. Biodegradable particle foaming:

出（chū）現多個孔，或者表麵粗糙真空度不夠；溫度過高（gāo），原料（liào）成分的分解（jiě）等。 原料含水分過高； 原料（較（jiào）差的副（fù）牌料）不耐溫或成分使用不當，相互間化學反應而發。

Multiple holes appear, or the surface roughness and vacuum degree are insufficient; High temperature, decomposition of raw materials, etc. The moisture content of raw materials is too high; The raw materials (poor sub brand materials) are not temperature resistant or the ingredients are improperly used, resulting from chemical reactions between them.

3.顆（kē）粒表麵光滑（huá）平整問題：

3. The particle surface is smooth and flat:

顆粒表（biǎo）麵光（guāng）滑平整，要看所用的原材（cái）料的成分——玻纖、 無（wú）機礦物、表麵較粗燥的阻燃劑等物質。但相比對下， 同個料批次（cì）有差異，原因有：

The particle surface is smooth and flat, depending on the composition of the raw materials used - glass fiber, inorganic minerals, flame retardants with rough and dry surfaces, etc. However, there are differences in the same material batch compared with the following reasons:

① 塑化混煉不好，交（jiāo）叉分（fèn）布不夠細加工溫度（dù）不夠,塑化不好；② 機器問題，如模孔不平整、不夠光滑等；③ 原料（liào）成分間相容性不好（也包括色粉色母在內），出現分（fèn）層、析（xī）出等。

① Poor plasticizing and mixing, insufficient cross distribution, insufficient fine processing temperature, poor plasticizing; ② Machine problems, such as uneven die holes and insufficient smoothness; ③ The compatibility between raw material components is not good (including pink mother), and delamination and precipitation occur.

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