Intumescent char
Forms an insulating foam char that protects the substrate.
앱
폴리인산암모늄 (앱) Supplier from China
Ammonium polyphosphate (앱) is a halogen-free phosphorus–nitrogen flame retardant used in intumescent coatings, 폴리프로필렌, 에폭시, 폴리우레탄, textiles and wood. SUNCHEM supplies APP with a batch COA on every shipment; the TDS is sent on request.
CAS 68333-79-9 · (NH₄PO₃)n · Phosphorus–nitrogen flame retardant
- 모든 배송에 대한 로트 COA
- 시험용 샘플
- 평가판에 대한 기술 지원
제품개요 & 주요 이점
APP releases phosphoric acid when heated, which chars the polymer, and ammonia, which blows the char into an insulating foam. With a carbon source such as pentaerythritol and a blowing agent such as melamine it forms the classic intumescent system used in fire-protective coatings for steel and wood, and in halogen-free polypropylene.
Long-chain crystal phase II APP has low water solubility and suits plastics and coatings; surface-treated grades further reduce water pick-up. 인, nitrogen, solubility and particle size are the numbers to compare.
Halogen-free, low smoke
No bromine or chlorine, with low smoke and corrosive gas.
Specified on your terms
We quote against your phosphorus and nitrogen content, crystal phase, degree of polymerization, water solubility, particle size and moisture and send the batch COA for each lot.
기술 사양
| 매개변수 | 일반적인 값 |
|---|---|
| 제품명 | 폴리인산암모늄 |
| 동의어 | 앱; polyphosphoric acid, ammonium salt |
| CAS 번호. | 68333-79-9 |
| 공식 | (NH₄PO₃)N |
| 모습 | White powder |
Phosphorus and nitrogen content, crystal phase, degree of polymerization, water solubility, particle size and moisture limits depend on the producer grade and are stated on the TDS and batch COA; the limits for your order are confirmed in the quotation and contract.
Applications by Polymer
Where APP is used, and what to confirm before you switch supply.
Intumescent fire-protective coatings
With pentaerythritol and melamine in fire-protective coatings for steel structures and wood.
Check before trial
- Coating type and fire standard
- Crystal phase and solubility
- 월별 거래량
Halogen-free polypropylene
With a charring agent in halogen-free PP parts and in polyolefin compounds.
Check before trial
- UL 94 target
- Surface-treated or not
- Particle size
Epoxy, 폴리우레탄, textiles and wood
Used in epoxy, rigid PU foam, textile back-coatings, wood and paper.
Check before trial
- Process
- Water resistance needs
- Sample for trials
Selection & 비교
Choosing the right APP grade
| 귀하의 요구 사항 | 일반적으로 작동하는 것 |
|---|---|
| Intumescent coatings | Crystal phase II APP with low solubility |
| Halogen-free PP | Phase II or surface-treated APP with a charring agent |
| Humid service conditions | Surface-treated (coated) 등급 |
| Replacing an existing supplier | 현재 TDS 또는 COA 보내기; we quote against the parameters you approve |
포장 & 저장
포장
Tell us the bag or drum size and pallet requirements you need; we confirm the packaging with the quotation.
저장
Keep bags closed in a dry store; APP absorbs moisture.
첫 번째 이메일부터 승인된 공급까지
Name the end use
Name the polymer and the fire rating you must meet — UL 94 class and thickness, LOI or cable standard.
Compare the numbers that matter
Phosphorus and nitrogen, crystal phase, degree of polymerization, water solubility, particle size and moisture.
Design the full system
APP works with a carbon source and blowing agent; test the complete formula, not APP alone.
Trial, then lock the spec
Compound a trial batch, run your fire and mechanical tests, and keep the approved lot COA as the reference.
귀하의 요구 사항을 알려주십시오. 우리는 등급을 일치.
폴리머를 알려주세요, the fire rating you need, the quantity and the destination port. 현재 사양을 추가하면 이에 대한 견적을 보내드립니다..
| 정보 | 예 |
|---|---|
| 애플리케이션 | 코팅, PP, 에폭시, PU, 직물, 목재 |
| 필수사양 | Crystal phase, 용해도, 입자 크기 |
| 포장 | Bag or drum size; pallets |
| 수량 | Sample / trial order / 연간 볼륨 |
| 목적지 | 국가 및 항구 |
| 필요한 서류 | COA, SDS, TDS, RoHS/REACH |
Related products
폴리인산암모늄 (앱) 자주하는 질문
What is APP used for?
In intumescent fire-protective coatings, halogen-free PP, 에폭시, PU foam, 직물, wood and paper.
What is phase II APP?
A long-chain crystal form with low water solubility, preferred for plastics and coatings.
Which parameters should I compare between offers?
Phosphorus and nitrogen content, crystal phase, 용해도, particle size and moisture.
Can I get the TDS?
예. Send an inquiry with your application and we email the TDS.
