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Hydrolysis and polyurethane explained - A common problem with safety shoe

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  • China TM059 Black leather composite toe anti puncture18KV electric harzard resistant safety shoes for electrician manufacturer

    TM059 Black leather composite toe anti puncture18KV electric harzard resistant safety shoes for electrician

    1.Materials: Embossed split cow leather upper, PU dual density sole, soft air mesh fabric
    2.Size: 38-46
    3.Toe cap & mid sole: Composite toecap & aramid fiber mid sole
    4.Function: Insulation 18KV, slip/ oil/ impact/ puncture/ water resistant, metal free, Shock absorption
    5.Package: 1 pair per color box,10 pairs per carton.
    6.Sample Time: 10 days
    7.Delivery time: 45 days after receiving the deposit
    8.Certificate: CE & ASTM

  • China TM245-1 Non-slip rubber sole prevent puncture men sport type safety shoes with steel toe manufacturer

    TM245-1 Non-slip rubber sole prevent puncture men sport type safety shoes with steel toe

    1. Materials: Cow suede leather upper, rubber sole, soft air mesh fabric lining
    2. Size: 36-47
    3. Toe cap & mid sole: Steel toe cap & aramid fiber mid sole
    4. Standard: CE EN ISO 20345 SB-P SRC or others
    5. Function: Slip/ oil/ petrol/ chemical/ impact/ puncture resistant, breathable, shock absorption.
    6. Usage: workshop, warehouse, logistics, basic workplace, construciton etc.
    7. Package: 1 pair per color box, 10 pairs per carton.
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM058L Black cow leather oil slip resistant pu sole steel toe puncture proof men's safety shoes work manufacturer

    TM058L Black cow leather oil slip resistant pu sole steel toe puncture proof men's safety shoes work

    1. Materials: Embossed split cow leather upper, PU dual density sole, air mesh fabric lining
    2. Size: 36-47
    3. Toe cap & mid sole: Steel toe cap & steel mid plate
    4. Standard: CE EN ISO 20345:2011 SB-P SRC or others
    5. Function: Slip/ oil/ petrol/ chemical/ 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 TM058 Black cow leather pu sole steel toe puncture proof cheap industrial safety shoes for men manufacturer

    TM058 Black cow leather pu sole steel toe puncture proof cheap industrial safety shoes for men

    1. Materials: Embossed split cow leather upper, PU dual density sole, air mesh fabric lining
    2. Size: 36-47
    3. Toe cap & mid sole: Steel toe cap & steel mid plate
    4. Standard: CE EN ISO 20345:2011 SB-P SRC or others
    5. Function: Slip/ oil/ petrol/ chemical/ 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 TM141 Anti slip shock absorption eva rubber sole non safety outdoor hiking boots shoes manufacturer

    TM141 Anti slip shock absorption eva rubber sole non safety outdoor hiking boots shoes

    1. Materials: Microfiber leather upper, EVA rubber sole, soft air mesh fabric lining
    2. Size: 37-47
    3. Toe cap & mid sole: No
    4. Standard: CE EN ISO 20345 OB SRC or others
    5. Function: Slip/ oil/ petrol/ chemical resistant, light weight, shock absorption.
    6. Usage: outdoor training, hiking, outdoor activities, desert etc.
    7. Package: 1 pair per color box, 10 pairs per carton.
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM211 KPU upper oil slip resistant pu sole steel toe puncture proof fashion sport safety shoes manufacturer

    TM211 KPU upper oil slip resistant pu sole steel toe puncture proof fashion sport safety shoes

    1. Materials: KPU and fabric upper, PU dual density sole, soft air mesh fabric lining
    2. Size: 37-47
    3. Toe cap & mid sole: Steel toe cap & Steel mid plate
    4. Standard: CE EN ISO 20345 SB-P SRC or others
    5. Function: Slip/ oil/ petrol/ chemical/ impact/ puncture resistant, shock absorption.
    6. Usage: workshop, warehouse, logistics, basic workplace, construciton etc.
    7. Package: 1 pair per color box, 10 pairs per carton.
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM139-1 Heat resistance pu rubber rubber sole composite toe anti puncture safety welding boots manufacturer

    TM139-1 Heat resistance pu rubber rubber sole composite toe anti puncture safety welding boots

    1. Materials: Corrected split cow leather upper, PU rubber sole, Soft air mesh fabric
    2. Size: 37-47
    3. Toe cap & mid sole: Composite toe & aramid fiber mid sole
    4. Standard: CE EN ISO 20345:2011 Sb-p SRC or others
    5. Function: Heat resistance, slip/ oil/ acid/ petrol/ chemical/ impact/ puncture/ water resistant
    6. Package: 1 pair per color box,10 pairs per carton.
    7. Sample Time: 10 days
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM223-1 CE verified anti slip pu sole grey suede leather composite toe puncture proof safety shoes for men manufacturer

    TM223-1 CE verified anti slip pu sole grey suede leather composite toe puncture proof safety shoes for men

    1. Materials: Cow suede leather upper, PU dual density sole, soft sandwich mesh fabric lining
    2. Size: 37-47
    3. Toe cap & mid sole: Composite toe cap & aramid fiber mid sole
    4. Standard: CE EN ISO 20345 SB-P SRC or others
    5. Function: Slip/ oil/ petrol/ chemical/ impact/ puncture resistant, anti static, shock absorption.
    6. Usage: workshop, warehouse, logistics, basic workplace, construciton etc.
    7. Package: 1 pair per color box, 10 pairs per carton.
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM246 Oil acid resistant rubber sole steel toe anti puncutre sport type safety shoes for women manufacturer

    TM246 Oil acid resistant rubber sole steel toe anti puncutre sport type safety shoes for women

    1. Materials: Cow suede leather upper, rubber sole, soft air mesh fabric lining
    2. Size: 37-47
    3. Toe cap & mid sole: Steel toe cap & aramid fiber mid sole
    4. Standard: CE EN ISO 20345 SB-P SRC or others
    5. Function: Slip/ oil/ petrol/ chemical/ impact/ puncture resistant, shock absorption.
    6. Usage: workshop, warehouse, logistics, basic workplace, construciton etc.
    7. Package: 1 pair per color box, 10 pairs per carton.
    8. Order Lead Time: 45 days after receiving the deposit

  • China TM245 Anti slip rubber sole cow suede leather steel toe prevent puncture sneaker safety shoes for women manufacturer

    TM245 Anti slip rubber sole cow suede leather steel toe prevent puncture sneaker safety shoes for women

    1. Materials: Cow suede leather upper, rubber sole, soft air mesh fabric lining
    2. Size: 37-47
    3. Toe cap & mid sole: Steel toe cap & aramid fiber mid sole
    4. Standard: CE EN ISO 20345 SB-P SRC or others
    5. Function: Slip/ oil/ petrol/ chemical/ impact/ puncture resistant, breathable, shock absorption.
    6. Usage: workshop, warehouse, logistics, basic workplace, construciton etc.
    7. Package: 1 pair per color box, 10 pairs per carton.
    8. Order Lead Time: 45 days after receiving the deposit

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Job Title: General Manager
Cell Phone: +86 13936186368
Skype: kevinsafer
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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!