Analysis Of Commonly Used Materials For Hollow Blow Molding

一名从事吹塑机塑料成型工作的技术人员和工人,必须了解塑料材料。只有了解各种类型的塑料吹塑机塑料材料,才能应用自如,无论是在成型前对原料的选择,还是成型中对成型工艺的设定,至成型机的投料,都与塑料的类型有关。 塑料的分类方法有很多,常用的有以下几种:

One is engaged in blow molding machine plastic molding work of technical personnel and workers, must understand the plastic material. Only to understand the various types of plastic blow molding machine plastic materials,can be applied freely, Selection of raw materials before molding, Or molding process setting, feeding of molding machine, are related to the type of plastic. There are a lot of methods of classification of plastic, commonly used in the following several:

  • 根据塑料的来源分为两种类型

According to the source of plastic is divided into two types

(1)天然树脂natural resin;

(2)合成树脂synthetic resin;
2.根据塑料的生产工艺分为四种类

According to the plastic production process is divided into four types

  • 以链式聚合反应合成的树脂为基础的塑料。酸中酪及其共聚物等

Resin based plastic based on chain polymerization reaction. Acid and its copolymers

  • 以缩聚反应或逐步聚合反应合成的树脂。如酚醛树脂塑料、氨家塑料和聚酯类塑料等。

Resin synthesized by condensation polymerization or stepwise polymerization. Such as phenolic resin, plastic, plastic, plastic, etc..

  • 以化学改性和天然树脂为基础的塑料。如硝酸纤维素、醋酸纤维家以及再生纤维等。

Plastics based on chemical modification and natural resin. Such as cellulose nitrate, acetate fiber, and recycled fiber, etc..

  • 以天然沥青及某些有机物高温裂解树脂为基础的塑料。

Plastics based on pyrolysis of natural bitumen and some organic matter at high temperature.
3.根据聚合物链之间在凝固后的结构型态分为三种类型

According to the structure of the polymer chain after solidification, the structure is divided into three types

(1)非结晶型(无定型) Non crystalline (amorphous);

(2)半结晶型Semi crystalline;

(3)结晶型Crystalline form。结晶型理科在凝固时,有晶核到晶粒的生成过程丙烯、尼龙、聚甲醛、聚酪等。无定型塑料在凝固时,没有品核的形成到晶粒的生长过程自由的大分子链的“陈结”。例如:聚苯乙烯、聚氯乙烯、有机玻璃、聚碳酸酪等。

Crystalline science at the time of solidification, There is a crystal nucleus to the formation process of the crystal grain, nylon, poly formaldehyde, and so on. Amorphous plastics in the solidification, No nucleation is formed to the grain growth process of the large molecular chain of the “Chen knot””. For example: polystyrene, polyvinyl chloride, organic glass, poly carbonic acid, etc..
4.根据塑料对热作用的反应分为两大类

According to the reaction of the plastic to the thermal effect is divided into two categories

(1)热塑性塑料Thermoplastic plastics;

(2)分条圆刀片热固性塑料热塑性塑料的特点是加热后可以软化,温度继续升高时可以熔融,而冷却时又重返固态:吹塑机这过程是可逆的,可以反复多次。例如:聚烯烃、聚苯乙烯、聚酰胺类、聚丙烯酸类,氯化聚醚、聚碳酸酯等均属此类塑料:而热因性塑料的特点是在某一温度下能转变成可塑性熔体,但如果继续提高温度,延长加热时间,高分子内部将产生交联.发生固化;吹塑机若继续提高加热温度就会发生分解c例如;酚醛塑料、笺基塑料、环氧树脂、映喃树脂等属于此类塑料。

The thermosetting plastic thermoplastic plastic is characterized in that the plastic is heated and can be softened. The temperature continues to rise when it can be melted and cooled and then returned to the solid state: Blow molding machine this process is reversible, can be repeated several times. For example: polyolefin, polystyrene, polyamide, polypropylene acids, chlorinated polyether, polycarbonate and so on are such plastic: And the characteristic of the hot plastic is that it can be changed into a plastic melt at a certain temperature, However, if the temperature is increased, the heating time is prolonged, the polymer will be crosslinked; If the blow molding machine continues to increase the heating temperature will be decomposed, For example; phenolic plastics, paper based plastic, epoxy resin, furan resin etc. belong to this type of plastic mirror.