Guidance on the use of PPA

1. Preparation of PPA plastic masterbatch

1.1 Clean the twin-screw extruder. Special plastic manufacturers

1.2 After mixing LLDPE particles (95%) and PPA powder (5%) of the same trademark evenly, participate in the twin-screw extruder, extrude and granulate to prepare PPA master batch with 5% PPA content. The key to this step is to make PPA particles form excellent looseness in LLDPE matrix.

2. Film blowing comments

2.1 Clean the film blower.

2.2 Blow the film with LLDPE of the same trademark. After the machine is stable, gradually increase the screw speed until defects appear, such as die buildup and/or shark skin. Record the process parameters at this time, such as screw speed (S0), torque, die pressure, current and power of the extruder, etc.

2.3 Do not change the screw speed (S0) at this time, and participate in the experiment of PPA master batch. It is recommended to use a large increase, such as 1000ppm, so that the coating balance of PPA can be achieved quickly and the effect can be observed. Taking 1000ppm as an example, 98% LLDPE and 2% PPA masterbatch (concentration 5%) are required. After the two are mixed evenly, participate in the film blowing machine for film blowing. After a period of time, the coating of PPA is balanced, and the effect can be observed, such as the reduction or disappearance of die buildup and/or shark skin. Record the process parameters at this time, and compare with the parameters in 2.2.

2.4 The screw speed (S0) can be maintained to gradually reduce the increase of PPA. For example, from 1000ppm → 750ppm → 500ppm......, this can confirm the small increase of zui in which PPA works. PPA

Hazard overview editor: special plastic manufacturer

1GHS Classification

According to the UN GHS classification standard, this product is non hazardous.

The content of substances harmful to the environment is unknown, and the harm of 20.38% of the ingredients to the aquatic environment is unknown.

2 First aid methods

Eye contact: wash eyes immediately with plenty of water for at least 15 minutes. Do not remove hot melted material. Get medical attention immediately.

Skin contact: wash the affected part with soap and water. Do not remove hot melt material. Cover the affected part with a clean cloth. Get medical attention immediately

Inhalation: Move the patient to a place with fresh air. If the symptoms worsen, seek medical treatment.

Ingestion: No first aid required. If the symptoms/signs increase, seek medical advice immediately.

3 Fire fighting methods

Applicable Activator:

Contact hazard during combustion: This substance will not burn. Thermal decomposition will occur in contact with intense heat. Prevent dust from raising, reduce dust ignition or explosion, and there is a risk of static electricity ignition during operation and application. Properly ground the product during product transmission according to the method described in NFPA77

Survival procedure: wear full protective equipment (Bunker Gear) and self-contained breathing apparatus (SCBA).

Special instruction for fire protection: dust cloud of this material may explode when encountering fire source. Special plastic manufacturers

Function description: The thermal deformation temperature of the modified polyphenylene terephthalate (PPA) plastic can reach more than 300 ℃, and the continuous application temperature can reach 170 ℃, which can meet your short-term and long-term thermal functions. It can adhere to its superior mechanical properties strength, hardness, fatigue resistance and creep resistance in a wide range of temperature programs and high humidity environments. Toughened Lv grade PPA combines superior toughness with certain planned hardness and flexibility. It is an excellent choice for one-time rigidity and flexibility in repeated application of fasteners. Products of special grade supplied together shall be used for spraying and electroplating surfaces, fire resistance, ethylene glycol resistance and reflexivity requirements.