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Hydrolysis and polyurethane explained - A common problem with safety shoe

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  • China TM197 High Quality Brown Genuine Leather Fiberglass Toe Safety Boots manufacturer

    TM197 High Quality Brown Genuine Leather Fiberglass Toe Safety Boots

    1. Materials: Crazy horse leather upper, EVA & rubber sole, soft mesh fabric lining
    2. Size: 38-46
    3. Toe cap & mid sole: Fiberglass toe cap & aramid fiber mid sole
    4. Standard: CE EN ISO 20345:2022 S3 FO SR or others
    5. Function: HRO, Slip/ oil/ petrol/ impact/ puncture resistant, shock absorption
    6. Package: 1 pair per color box,10 pairs per carton.
    7. Sample Time: 7 days
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM196 Genuine Leather Fiberglass toe Anti Puncture Waterproof Safety Shoes Men manufacturer

    TM196 Genuine Leather Fiberglass toe Anti Puncture Waterproof Safety Shoes Men

    1. Materials: Oil full grain leather upper, EVA & rubber sole, soft mesh fabric lining
    2. Size: 38-46
    3. Toe cap & mid sole: Fiberglass toe cap & aramid fiber mid sole
    4. Standard: CE EN ISO 20345:2022 S3 FO SR or others
    5. Function: waterproof, HRO, Slip/ oil/ petrol/ impact/ puncture resistant, anti static
    6. Package: 1 pair per color box,10 pairs per carton.
    7. Sample Time: 7 days
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM2031 New Anti-skid Fiberglass Toe Hiking Sport Safety Shoes Light Weight manufacturer

    TM2031 New Anti-skid Fiberglass Toe Hiking Sport Safety Shoes Light Weight

    1. Materials: Microfiber leather upper, EVA & Rubber sole, soft mesh fabric lining
    2. Size: 38-46
    3. Toe cap & mid sole: Fiberglass toe cap & aramid fiber mid-sole
    4. Standard: CE EN ISO 20345:2022 S1-P SRC or others
    5. Function: Slip/ oil/ petrol/ impact/ puncture resistant, anti static, breathable, shock absorption
    6. Package: 1 pair per color box,10 pairs per carton.
    7. Sample Time: 7 days
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM2030 Tiger Master New Light Weight Fashion Sport Safety Shoes manufacturer

    TM2030 Tiger Master New Light Weight Fashion Sport Safety Shoes

    1. Materials: TPU & nylon fabric upper, EVA & Rubber sole, soft mesh fabric lining
    2. Size: 38-46
    3. Toe cap & mid sole: Fiberglass toe cap & aramid fiber mid-sole
    4. Standard: CE EN ISO 20345:2022 S1-P SRC or others
    5. Function: Slip/ oil/ petrol/ impact/ puncture resistant, anti static, breathable, shock absorption
    6. Package: 1 pair per color box,10 pairs per carton.
    7. Sample Time: 7 days
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM2029 Twist Lock Fiberglass Toe Sport Safety Shoes for Men manufacturer

    TM2029 Twist Lock Fiberglass Toe Sport Safety Shoes for Men

    1. Materials: TPU & nylon fabric upper, EVA & Rubber sole, soft mesh fabric lining
    2. Size: 38-46
    3. Toe cap & mid sole: Fiberglass toe cap & aramid fiber mid-sole
    4. Standard: CE EN ISO 20345:2022 S1-P SRC or others
    5. Function: Slip/ oil/ petrol/ impact/ puncture resistant, anti static, breathable, shock absorption
    6. Package: 1 pair per color box,10 pairs per carton.
    7. Sample Time: 7 days
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM2028 Twist Lock Anti-skid Fiberglass toe Stylish Sport Safety Shoes manufacturer

    TM2028 Twist Lock Anti-skid Fiberglass toe Stylish Sport Safety Shoes

    1. Materials: TPU & nylon fabric upper, EVA & Rubber sole, soft mesh fabric lining
    2. Size: 38-46
    3. Toe cap & mid sole: Fiberglass toe cap & aramid fiber mid-sole
    4. Standard: CE EN ISO 20345:2022 S1-P SRC or others
    5. Function: Slip/ oil/ petrol/ impact/ puncture resistant, anti static, breathable, shock absorption
    6. Package: 1 pair per color box,10 pairs per carton.
    7. Sample Time: 7 days
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM2027 EVA Rubber Sole Fiberglass Toe Fashion Hiking Sport Safety Shoes manufacturer

    TM2027 EVA Rubber Sole Fiberglass Toe Fashion Hiking Sport Safety Shoes

    1. Materials: TPU & nylon fabric upper, EVA & Rubber sole, soft mesh fabric lining
    2. Size: 38-46
    3. Toe cap & mid sole: Fiberglass toe cap & aramid fiber mid-sole
    4. Standard: CE EN ISO 20345:2022 S1-P SRC or others
    5. Function: Slip/ oil/ petrol/ impact/ puncture resistant, anti static, breathable, shock absorption
    6. Package: 1 pair per color box,10 pairs per carton.
    7. Sample Time: 7 days
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM2026 Anti Slip Fashion Sport Hiking Safety Shoes with Fiberglass Toe manufacturer

    TM2026 Anti Slip Fashion Sport Hiking Safety Shoes with Fiberglass Toe

    1. Materials: TPU & Jacquard fabric upper, EVA & Rubber sole, soft mesh fabric lining
    2. Size: 38-46
    3. Toe cap & mid sole: Fiberglass toe cap & aramid fiber mid-sole
    4. Standard: CE EN ISO 20345:2022 S1-P SRC or others
    5. Function: Slip/ oil/ petrol/ impact/ puncture resistant, anti static, breathable, shock absorption
    6. Package: 1 pair per color box,10 pairs per carton.
    7. Sample Time: 7 days
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM2025 Slip-ins Hand Free Fiberglass Toe Anti Puncture No laces Safety Shoes for Men manufacturer

    TM2025 Slip-ins Hand Free Fiberglass Toe Anti Puncture No laces Safety Shoes for Men

    1. Materials: Flying knit fabric upper, EVA & Rubber sole, soft mesh fabric lining
    2. Size: 38-46
    3. Toe cap & mid sole: Fiberglass toe cap & aramid fiber mid-sole
    4. Standard: CE EN ISO 20345:2022 S1-P SRC or others
    5. Function: Slip/ oil/ petrol/ impact/ puncture resistant, anti static, shock absorption
    6. Package: 1 pair per color box,10 pairs per carton.
    7. Sample Time: 7 days
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM2024 Slip-ins Anti-skid Fiberglass Toe Puncture Proof Sport Safety Shoes New manufacturer

    TM2024 Slip-ins Anti-skid Fiberglass Toe Puncture Proof Sport Safety Shoes New

    1. Materials: Jacquard fabric upper, EVA & Rubber sole, soft mesh fabric lining
    2. Size: 38-46
    3. Toe cap & mid sole: Fiberglass toe cap & aramid fiber mid-sole
    4. Standard: CE EN ISO 20345:2022 S1-P SRC or others
    5. Function: Slip/ oil/ petrol/ impact/ puncture resistant, anti static, breathable, shock absorption
    6. Package: 1 pair per color box,10 pairs per carton.
    7. Sample Time: 7 days
    8. Order Lead Time: 45 days after receiving the deposit

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Job Title: General Manager
Cell Phone: +86 13936186368
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News

Hydrolysis and polyurethane explained - A common problem with safety shoe

2022-01-06 13:53:32
Tiger master is safety shoesmanufacturer in china. We have more than 15 years of experience of exporting many different styles ofsafety shoes to foreign market. Our safety shoes are built with good performance and work safety protection. There is a common problem with safety shoes. It is hydrolysis. Now we will explain hodrolysis and polyurethane for you.

Many of our shoes have the soles attached to the uppers by a process where 2 materials are brought together in a mould, the resultant chemical reaction forms polyurethane (PU). the use of polyurethane makes a lightweight flexible sole which is not only shock absorbent but also extremely hard wearing, that's why polyurethane is ideal for shoes.

One of the main technical challenges with polyurethane is overcoming an ageing deterioration known as ‘hydrolysis’. Hydrolysis is the chemical breakdown of the PU polymer and the resulting physical breakdown or crumbling of the PU sole by the attack of water (usually in vapour form), occurring over a period of several years (even when the shoes are in store!).

This process is accelerated by warmth and high humidity. It will, therefore, happen more quickly in tropical climates, but also in confined spaces (such as lockers) if the safety shoes are put away damp. In the most advanced state of hydrolysis, the PU sole will lose all its physical strength, thus cracking or crumbling.

The Tiger Master PU sole has been improved to increase the resistance against hydrolysis and performs better than any average safety shoe.

There are 2 types of PU soles. There is a Polyether based PU sole and a Polyester based PU sole. Polyether based PU soles have a high resistance against hydrolysis and low oil resistance. Polyester based PU soles have a low resistance against hydrolysis and high oil resistance.

Safety shoes are always using a polyester based PU sole. The basic PU sole used in most safety shoes on the market lasts for 1.5 year in tropical conditions and 3 years in normal conditions.

The Tiger Master PU sole, upgraded with improved resistance against hydrolysis, lasts for 3 years in tropical conditions and 6 years in normal conditions.

Hydrolysis Safety Shoes:


Do you have any questions about hydrolysis or crumbling shoe soles?

Don’t hesitate to contact us right away. Tiger master is professional!