塑料 · PLASTIC

聚乳酸(PLA)

Polylactic Acid

聚乳酸（PLA）是一种可再生资源来源的生物基塑料，主要由玉米淀粉、甘蔗、木薯等天然植物中提取的乳酸聚合而成。它具有高透明性、良好的刚性和可工业降解特性，是当前可持续材料趋势中的代表性热塑性材料。

Polylactic Acid (PLA) is a bio-based plastic from renewable resources, mainly polymerized from lactic acid extracted from natural plants such as corn starch, sugar cane, and cassava. It has high transparency, good rigidity, and industrial degradability, making it a representative thermoplastic material in current sustainable material trends.

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Plates

材料图版

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Characteristics

材料特性

生物基来源Bio-based Source
原料来自天然植物，可再生资源循环使用Raw materials from natural plants, renewable resource recycling
可工业降解Industrially Biodegradable
在特定条件下可完全生物降解为水和二氧化碳Can be completely biodegraded into water and carbon dioxide under specific conditions
刚性强，轻质Strong Rigidity, Lightweight
有良好强度和刚性，密度较低（约 1.25 g/cm³）Good strength and rigidity, low density (about 1.25 g/cm³)
3D打印友好3D Printing Friendly
常用于FDM打印，易成型、精度好、色彩丰富Commonly used for FDM printing, easy forming, good precision, rich colors
透明性较好Good Transparency
可制成高透明片材、薄膜，视觉洁净适用于环保包装或装置Can be made into highly transparent sheets and films, visually clean for environmental packaging or installations
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Specifications

技术参数

属性 / Property数值 / Value单位 / Unit
密度Density1.24-1.261.24-1.26g/cm³
拉伸强度Tensile Strength50-7050-70MPa
弯曲模量Flexural Modulus3000-40003000-4000MPa
热变形温度Heat Deflection Temperature55-60°C（未改性） / 90-110°C（热改性PLA）55-60°C (unmodified) / 90-110°C (heat-modified PLA)—
降解条件Degradation Conditions工业堆肥环境（50-60°C、高湿、氧气充足）Industrial composting environment (50-60°C, high humidity, sufficient oxygen)—
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Manufacturing Process

制造工艺

注塑成型：可用于制作包装盒、结构壳体、小型模件，需温控严格 吹膜/热压成型：适用于薄膜、杯盖、一次性结构件 3D打印（FDM）：最常用方式，适合原型验证、艺术造型、教育用具等 热压/热弯加工：厚片可热压造型，但需避免超过玻璃化温度引发变形 激光切割：可用于薄板，适合做图形雕刻、轻结构组件、交互片材

Injection Molding: Can be used to make packaging boxes, structural housings, small modules, requiring strict temperature control Blow Film/Thermoforming: Suitable for films, cup lids, disposable structural components 3D Printing (FDM): Most commonly used method, suitable for prototype validation, artistic modeling, educational tools, etc. Hot Pressing/Hot Bending Processing: Thick sheets can be hot-pressed for shaping, but need to avoid exceeding glass transition temperature to prevent deformation Laser Cutting: Can be used for thin sheets, suitable for graphic engraving, lightweight structural components, interactive panels

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Applications

应用场景

  • App. 01

    展览装置

    Exhibition Installations

    用于短期或环保型展陈结构、互动面板、3D打印壳体

    Used for short-term or eco-friendly exhibition structures, interactive panels, 3D printed shells

  • App. 02

    交互艺术

    Interactive Art

    可成型精致图形、结构，具一定硬度，适合艺术结构外骨骼

    Can form delicate graphics and structures with certain hardness, suitable for artistic structural exoskeletons

  • App. 03

    包装设计

    Packaging Design

    食品托盘、透明盒子、环保塑封袋、瓶坯等

    Food trays, transparent boxes, eco-friendly plastic bags, bottle preforms, etc.

  • App. 04

    一次性制品

    Disposable Products

    餐具、杯盖、文件夹、饰件支架等（特别用于'无塑'要求场景）

    Tableware, cup lids, folders, decorative brackets, etc. (especially for 'plastic-free' requirement scenarios)

  • App. 05

    教育与实验

    Education & Experimentation

    原型验证、结构教学模型、打印教育玩具

    Prototype verification, structural teaching models, printed educational toys

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