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Tpu makes life better

Tpu makes life better
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  • Categories:Industry news
  • Author:
  • Origin:
  • Time of issue:2020-10-19 13:41
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(Summary description)

Tpu makes life better
Top

(Summary description)

  • Categories:Industry news
  • Author:
  • Origin:
  • Time of issue:2020-10-19 13:41
  • Views:
Information

 

 

 


01
TPU

 

 

TPU,是一种(AB)n型嵌段线性聚合物,A为高分子量(1000-6000)的聚酯或聚醚,B为含2-12直链碳原子的二醇,AB链段间化学结构是用二异氰酸酯,通常是MDI连接。热塑性聚氨酯橡胶靠分子间氢键交联或大分子链间轻度交联,随着温度的升高或降低,这两种交联结构具有可逆性。在熔融状态或溶液状态分子间力减弱,而冷却或溶剂挥发之后又有强的分子间力连接在一起,恢复原有固体的性能。

其分为聚酯型聚醚型两类,相对密度1.10-1.25,聚醚型相对密度比聚酯型小。酯型和醚型的每一种类型材料又可分为芳香族类和脂肪族类两个分类。脂肪族类耐紫外线性能较好,但价格较贵。这两种类型的材料都有很好的耐油性能。

02
TPU processing

 

(1) Flow extension: the raw materials are plasticized and fused by an extruder. Through the T-shaped structure forming mould, the flaky flow is extended to the roll surface of the stable rotating cooling roller. The film is cooled and shaped on the cooling roller, and then the product is rolled up after traction and trimming.

 

Blow molding: A plastic processing process in which plastic particles are heated and melted and then blown into thin films. The quality of the film is related to the machine and the plastic particles. The elasticity and viscosity of TPU material will stick together and shrink when forming. To avoid this, PE is used to take out during production.

 

(3) Extrusion coating

 

(4) Rolling

03
features

 

Polyester (heat resistance, chemical resistance) and polyether (low temperature resistance, hydrolysis resistance, mildew resistance and antibacterial)

 

(2) High strength, wear resistance, weather resistance, environmental protection, non-toxic, easy to recycle decomposition, flexural disturbance resistance

 

 

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04
application

 

(1) Automobile industry -- handrails, protective rods, floors, sunshades, interior decoration, window laminate (2) Shoe material -- potential market 1. Printable, easy to process (high frequency melting, melting point is different), environmental protection, in line with eu import standards; 2. 2. Prefer bright and colorful products; (3) Clothing (4) readymade garments, aprons, curtains, bed sheets, bedspread, shower curtains, table cloth (5) Umbrella, raincoat protective gear (6) leather bags, leather cases (7) Chemical industry (8) Electronics (9) Medical treatment: 1. Medical mattress; Ice bag; Plasma bag; Surgical protective sleeve; (10) Clothing accessories: transparent elastic belt, bra liquid bag, chlorine bag, invisible shoulder belt, water stop belt; (11) Sports equipment: balls, scooters, sledges, snow boots, camping products (tents, drinking water belts), ski gloves, aprons; (12), inflatable toys, advertising balloons, air tightness, tear resistance, tensile, under high pressure (13) water supplies (14), life buoy, inflatable bag, inflatable water bed, inflatable boat fabrics and materials (15) in the safe bulletproof glass laminated membrane generally choose high ultraviolet transparent aliphatic, tensile performance requirements such as high transfer (16) industrial supplies (dynamic); Insulated floor; Oil bag; Fire prevention cloth; Heat and sound insulation; (17) Baby toys, cribs, strollers, bib fabric and lining (18) Packaging for food, industrial machines and electronic machines

 

 

 

05
The development direction

 

High quality -- rich types of stable quality -- high-end waterproof and moisture permeability, anti-UV and non-yellowing, ultra-transparent and non-crystal point specifications -- ultra-thin and a variety of color TPU film property improvement.

 

 

 

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