What is LAPEX PPSU

The LATI LAPEX series PPSU (polysulfone) is widely used in electrical, medical, aviation and industrial fields due to its stable thermal performance, flame retardancy and excellent mechanical strength. This series includes three models: PPSU R, PPSU R G/10, and PPSU R G/20, covering different formulations from no glass fiber to 20% glass fiber reinforcement, to meet the differentiated requirements of purchasers for dimensional stability, strength and toughness.

LAPEX R

01 | Common advantages of the LAPEX PPSU series

High flame retardancy: All pass UL94 V-0, with an oxygen index of 37 to 38%, suitable for scenarios with high safety requirements.

Отличная термостойкость: The long-term service temperature can reach 190℃, the heat distortion temperature (1.8MPa) is approximately 205 to 210℃, and the maximum Vicat softening temperature is 220℃.

Low smoke and low toxicity: It maintains environmental protection and safety characteristics even at the flame retardant grade.

Stable dimensional performance: The shrinkage rate range is reasonable, suitable for injection molding of precision structural components.

Reliable electrical performance: Surface resistance of 10¹² Ω, meeting the insulation requirements of electronic and electrical appliances.

02 | Key performance comparison

Свойство	PPSU R ⭐ Toughness-Oriented	PPSU R-GF10 ⭐ Balanced Type	PPSU R-GF20 ⭐ Rigidity-Oriented
Предел прочности	80 MPa	105 MPa	110 МПа
Модуль упругости	2600 MPa	4300 MPa	5900 MPa
Удлинение при разрыве	100%	2.80%	2.50%
Notched Impact Strength (23℃)	60 kJ/m²	10 kJ/m²	15 kJ/m²
Температура тепловой деформации (1,8 МПа)	205℃	210℃	210℃
Continuous Use Temperature	190℃	190℃	190℃
Shrinkage (Flow Direction)	0.75–0.90%	0.45–0.60%	0.40–0.55%
Стабильность размеров	80%	70%	72%
Удельный вес	1.30 g/cm³	1.37 g/cm³	1.43 g/cm³

Analysis of Model Highlights:

・PPSU R: No glass fiber, excellent toughness, suitable for medical shells and repeatedly stressed parts.

・PPSU R G/ 10:10% glass fiber, with a balance of rigidity and toughness, is often used in electrical connections and structural components.

・PPSU R G/ 20:20% glass fiber, with stable size and strong load-bearing capacity, suitable for automotive and aviation components.

03 | Intuitive performance comparison table

Измерение производительности	PPSU R ⭐ Toughness Grade	PPSU R G/10 ⭐ Balanced Grade	PPSU R G/20 ⭐ Rigidity Grade
Ударопрочность	⭐⭐⭐⭐⭐	⭐⭐	⭐⭐⭐
Предел прочности	⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐⭐
Rigidity / Modulus	⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐⭐
Стабильность размеров	⭐⭐	⭐⭐⭐	⭐⭐⭐⭐⭐
Weight / Density	Light (1.30)	Medium (1.37)	Heavier (1.43)
Recommended Applications	Medical device housings, high-impact parts	Electrical connectors, balanced structural parts	Automotive/aerospace structural and load-bearing components

🔎 Obvious Difference:

・PPSU R → Suitable for applications that require flexibility and impact resistance.

・PPSU R G/10 → Balanced strength and toughness, suitable for general structural components.

・PPSU R G/20 → has the strongest rigidity and stability, suitable for heat-resistant and load-bearing components.

04 | Application Recommendations

PPSU R

・Medical devices (surgical instruments, reusable sterilizable components)

・Drinking water pipe fittings and valves

・Enclosure components in high-impact environments

PPSU R-GF10

・Electrical components, aviation interiors

・Structural components, taking into account both strength and processability

・Medium load and heat resistance requirements applications

PPSU R-GF20

・High-strength support components

・Precision structural components (with dimensional stability required)

・Aviation and automotive structural components

05 | Purchasing suggestions

If you need the highest toughness, impact resistance and safety → please choose PPSU R

If you are seeking a balance between strength and toughness → please choose PPSU R-GF10

If you prioritize rigidity and dimensional accuracy → please choose PPSU R-GF20

06 | Часто задаваемые вопросы (FAQ)

Q1: What are the main differences between PPSU R, R-GF10 and R-GF20?
A1: PPSU R is mainly characterized by toughness; R-GF10 balance of strength and toughness; The R-GF20 has the best rigidity and dimensional stability.

Q2: Which model is more suitable for medical or drinking water applications?
A2: PPSU R, due to its high toughness, low smoke and low toxicity, is suitable for repeated disinfection use.

Q3: Will adding glass fiber affect transparency?
A3: Yes. PPSU R has higher transparency, while R-GF10 and R-GF20 are opaque.

Q4: Are the heat resistance performances of the three models the same?
A4: All can withstand 190℃ for a long time, meeting the requirements of high-temperature and steam disinfection.

07 | The advantages of Juyuan

As an international trader of plastic raw materials, Juyuan has been supplying LATI LAPEX series PPSU for a long time. We offer

・The full range of models is complete, covering from fiberglass-free to reinforced products.

・Professional selection support helps customers quickly match the most suitable materials.

・Global supply and flexible procurement ensure stable delivery and transparent pricing.

・With rich experience in application cases, we support multiple fields including medical care, automobiles, electrical appliances, and industry.

Summary

The LAYI LAPEX series PPSU takes into account flame retardancy, heat resistance and structural strength. It covers three grades: R, R G/10 and R G/20, and can meet various requirements ranging from high impact toughness to high rigidity and dimensional stability. Through Juyuan's professional supply and technical support, purchasers can quickly lock in the most suitable PPSU materials and enhance the competitiveness of their products.

LAPEX R G/10